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  • 1
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-06-23
    Description: The aim of this second Eng Special Issue is to collect experimental and theoretical re-search relating to engineering science and technology. The general topics of Eng are as follows: electrical, electronic and information engineering; chemical and materials engineering; energy engineering; mechanical and automotive engineering; industrial and manufacturing engineering; civil and structural engineering; aerospace engineering; biomedical engineering; geotechnical engineering and engineering geology; and ocean and environmental engineering. Therefore, the following editorial is a selection of representative works of these topics.
    Keywords: &nbsp ; Environment Management ; Environmental Engineering ; Chemical Engineering ; Materials Engineering&nbsp ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
    Language: English
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  • 2
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    Peter Lang International Academic Publishing Group
    Publication Date: 2024-03-26
    Description: What form did the portrayal of business owners, entrepreneurs, peasants, craftspeople and similar ‘protagonists of production’ take before it became the subject of negative assessments in the epoch of industrialization? Focusing on the European Enlightenment movement with a special emphasis on Spain, this volume sheds light on how both male and female figures working in production are represented by novels, plays, economic tracts and in the press. Literary scholars, historians, and economists analyse how those portrayals are related to the history of economic thought, 18th-century economic discourse, and enlightened Political Economy. With an epilogue by Deirdre McCloskey.
    Keywords: Beatrice ; Christian ; Craftspeople ; Entrepreneurs ; European ; Female ; Literature ; Male ; Preindustrial ; Production ; Protagonists ; Schuchardt ; Tschilschke ; Workers ; thema EDItEUR::D Biography, Literature and Literary studies::D Biography, Literature and Literary studies::DS Literature: history and criticism
    Language: English
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  • 3
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    De Gruyter | De Gruyter
    Publication Date: 2024-04-05
    Description: The essential principles of green chemistry are the use of renewable raw materials, highly efficient catalysts and green solvents linked with energy efficiency and process optimization in real-time. Experts from different fields show, how to examine all levels from the molecular elementary steps up to the design and operation of an entire plant for developing novel and efficient production processes.
    Keywords: Process Engineering ; Chemical Engineering ; Technical Chemistry ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNU Sustainability ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
    Language: English
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  • 4
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    InTechOpen | Management of CNS Tumors | Management of CNS Tumors
    Publication Date: 2024-04-04
    Description: Lynch syndrome (LS) (MIM No. 120435-6), previously known as hereditary nonpolyposis colorectal cancer (HNPCC) (Boland, 2005), is an autosomal dominant disorder caused by germline mutation in one of the DNA mismatch repair (MMR) genes. LS is among the most prevalent cancer syndromes in man and is estimated to account for 1-6% of all colorectal cancers (Lynch & de la Chapelle, 2003).
    Keywords: brain tumors ; lynch syndrome ; brain tumors ; lynch syndrome ; Colorectal cancer ; DNA methylation ; DNA mismatch repair ; Gene ; Glioblastoma ; Glioma ; Hereditary nonpolyposis colorectal cancer ; Mutation ; Neoplasm ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 5
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    Frontiers Media SA
    Publication Date: 2023-12-21
    Description: The vision of this Frontiers in Oncology Research Topic on "Stem Cell Genetic Fidelity" had the goal of steeping a diverse range of research perspectives to a first comprehensive synthesis of thought on the questions of how tissue stem cells manage gene mutation rate and the significance of that management in mammalian evolution and biology, in particular as it relates to tissue cell renewal, carcinogenesis, and aging. The primary focus was determinants of mutation rate in distributed stem cells (DSCs), which encompass all naturally occurring stem cells at all stages of mammalian development. In particular, contributions were sought that considered a broad range of aspects of the immortal DNA strand hypothesis for DSC genetic fidelity. Though proposed in 1975, only in the last decade has this landmark concept in tissue cell biology emerged as a central discussion in DSC research with increasing scrutiny and discussion by an increasing number of laboratories of diverse research perspectives and experimental approaches. With this hypothesis presenting a formidable technical challenge for experimental investigation, as would be expected, both supportive and unsupportive reports have been lining up. In the case of supportive studies, neither the range of applicable tissues nor the responsible molecular mechanisms are known; and the essential genomic process, non-random DNA template strand inheritance by asymmetrically self-renewing DSCs, has been suggested to potentially have other cellular roles besides reducing mutation rate. A major aspiration of this Research Topic was to create the first comprehensive, critical synthesis of current insights and viewpoints on the impact of the immortal DNA strand hypothesis in the history of DSC mutation research. A wide range of article types was considered including historical perspectives, critical reviews, critical commentaries, new hypotheses, new research perspectives, technical advances, and original research reports. Although treatments of the immortal DNA strand hypothesis were the major focus, the desired synthesis required integration of related ideas on mechanisms of DSC mutagenesis and its impact in the evolution of mammals, the emergence of cancers, and stem cell aging. As such, investigators focused on issues in e.g., germ stem cell mutagenesis, effects of environmental mutagens on DSC mutation rate, DSC mutation and tissue aging, determinations of types of mutations in DSCs, and the role of DSC mutation in cancer initiation were invited. Similarly, although the specific goal of the Research Topic was to enlighten DSC genetic fidelity in humans and other mammalians, informing contributions based on studies in other model organisms were also welcomed. To achieve even better representation of current experience, advances, and ideas in this field of investigation, these early contributors were encouraged to extend the opportunity to others who shared their interest in advancing our understanding of the mutability of DSCs and its significance in human biology.
    Keywords: R5-920 ; QH426-470 ; RC254-282 ; Q1-390 ; metakaryotic ; tissue stem cell ; immortal strand ; non-random segregation ; colon crypt ; hematopoietic stem cell ; DNA Replication ; Mutation ; cancer stem cells ; SSIS ; bic Book Industry Communication::M Medicine
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  • 6
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    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24627 | 19325 | 2018-05-22 06:26:49 | 24627 | Fisheries Society of Nigeria
    Publication Date: 2021-07-15
    Description: The 2661 specimens of the striped mullet, Mugil cephalus L. used for this study, were collected from high brackish lagoon in southwest Nigeria for 24 months. The size of the 2661 specimens of M. cephalus used for this study ranged from 1.7- 29.5cm standard length (total lenght 1.9 to 39.0cm). The sex ratio for M. cephalus was 1:0.53 and this showed a statistically significant (p〈0.05) dominance of the male over the females for the size range. The fecundity estimates varied from 635,568- 1,520,185 and was positively correlated to the fish and weight. Oocyte diameter averaged 409.64 ~c 40.67pm and this is indicative of an early stage of gonad maturation of the specimens in the lagoon before final spawning occurred. The GSI indicated that spawning activity occurred from December to May in the open ocean.
    Description: Includes: 28 references.
    Keywords: Ecology ; Fisheries ; Mugil cephalus ; ASE ; Nigeria ; Lagos Lagoon ; Mature ; Spawning ; Specimen ; Male ; Female ; brackishwater environment ; automation
    Repository Name: AquaDocs
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  • 7
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25147 | 18721 | 2018-08-26 16:54:41 | 25147 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: This investigation carried out for the first time in Iran inorder to prodcution of monosex female and also sterilization in Rainbow trout. In this study, the eggs of general females were fertilized with the sperm of sex reversed male and so monosex female population was produced in second generation and sterilization carried out with oral administration of 17α methy 1 testosterone and immenrsion and oral administiration methods were used in embryonic stage and from commencing of acitve feeding of larvae, respectiverly. For sex reversal , 13 treatments were considered totally, that the most percentage of male (100%) was observedc in a treatment including of orally administration of 0.5 ppm hormone for 60 days after commencing active feeding (P〈0.001). In the other treamtnet, different percentages of sex ratio including male, female, intersex and sterility were observed. The offspring of genral eggs fertilization with the sperm of masculinized fish were 100% female, chisquare test was shown the treatment of orally administration of 30 ppm hormone for 120 days after commencing active feeding that had been considered for sterilization, was produced 90% sterile fish (P〈0.001) and was changed the sex ratio significancthy. Morphological changes of the gonads and sperm ducts in matured fish and also histological changes in the gonads of fish in the treamtints were considerable.
    Keywords: Biology ; Iran ; Monosex ; Female ; Male ; Sterilization ; Rainbow trout ; Eggs ; Fertilized ; Sperm ; Population ; Sex ; Fish ; Oncorhynchus mykiss ; Rainbow trout
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25193 | 18721 | 2018-09-03 17:21:38 | 25193 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Aquaculture for human consuming species is being considered as the first substitution of catching aquatic species due to increase of human population and decrease of wild aquatic stocks. In this study, the hybrid sturgeon Bester (female beluga x male sterlet) was produced for the first time in Iran. Sperm of 1.35 kg male Acipenser ruthenus was used to fertilize the eggs of 125 kg female Huso huso in Shahid Marjani Sturgeon propagation center (Agh Ghala, Golestan province). The fries of bester and control treatment of beluga were transported to International Sturgeon Research Institute (Rasht) after about one month by reaching to 490 mg and 377 mg of weight respectively. All fishes fed by artificial concentrated food (48-50% protein and 15-17% fat) after a period of feeding with Artemia and Daphnia. Sorting was carried out according to increase of fish weight for both fishes. Results showed that the imported sterlet spawners were not at the high maturation stages and especially the males had not suitable sperm quality. It showed that up to 2 months of age , these was no significant difference between bester and beluga weight but from this age up to 2 months of age the weight of beluga was greater. Meanwhile from 2 months old up to the end of the study (21 months) the weight of bester sample was significantly greater than beluga. The comparison of FCR for the whole rearing period showed no difference between bester and beluga (2.4 and 2.3 respectively). In general, the increase and decrease pattern of GR and SGR were coincided to each other, but showed monthly differences. Growth rate (GR) and specific growth rate (SGR) of bester were greater than beluga from 4th and 3rd month of rearing period respectively.
    Keywords: Aquaculture ; Iran ; Golestan Province ; Aquaculture ; Beluga ; Sterlet ; Bester ; Growth Rate ; Aquatic ; Species ; Population ; Female ; Male ; Acipenser ruthenus ; Huso huso ; Sturgeon ; Artemia
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    In:  http://aquaticcommons.org/id/eprint/26001 | 18721 | 2018-10-19 18:22:44 | 26001 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-24
    Description: Nonylphenol (NP) is an endocrine disrupting chemical which has been shown to be able tomodulate endocrine system of various organisms by different mechanisms. The objective of this study was to investigate the potential effects of 4-NP and 17-β - estradiol (E2) on the immune parameters (IgM levels and lysozyme activity) of the teleost Koi carp (Cyprinus carpio carpio) for a better understanding of the immunereproductive system interactions. The experimental fishes were injected with ascending doses (10, 50,100 μgg^-1 body weight) of 4- nonylphenol (4-NP) and (2 μgg^-1 body mass) of 17-β-estradiol (E2) or vehicle during 3 weeks. After 21 days, the fishes (180) were anesthetizedand their blood samples were collected from caudal vein, and then they were dissected and sexually separated by gonad characters. The measurement of immune parameters in plasma showed that 4-NP induced significant increase in the IgM levels and lysozyme activity at dose of 50 μgg^-1 while the levels of these parameters in the higher doses (100 μgg^-1) decreased compared with the control group (p〈0.05). In addition the treatment, with 2 μgg^-1 E2 significantly decreased both the IgM levels and lysozyme activity after 21 days of injection. These results indicated that 4-NP and E2 could lead to disturb the balance of immune system with potential consequences for immature koi carp.
    Keywords: Biology ; Pollution ; Iran ; 4-nonylphenol ; 17-β-estradiol ; Immune-reproductivesystem ; Immunoglobulin IgM ; Lysozyme ; Koi carp ; Cyprinus carpio carpio ; Disruption ; Growth performance ; Female ; Male
    Repository Name: AquaDocs
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  • 10
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25836 | 18721 | 2018-10-13 10:31:51 | 25836 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: The most important habitats of mudskippers are muddy areas in tidal zone of tropical mangrove forests. Mudskippers are related to Oxudercinae subfamily of Gobiid fishes. Three most distributed species of Hormozgan mudskippers were Periophthalmus waltoni, Boleophthalmus dussumieri and Scartelaos tenuis. These fishes can be considered as euryhaline and eurythermal aquatic species, because they can tolerate a wide range of salinity and temperature. A research was done since september 2008 to september 2009 in two important mangrove regions of Hormuzgan (Tyab and Khamir) to determine some ecological characteristics of inhabited mudskipper species. Results showed that nitrate levels are significantly different between tidal lines and seasons (P〈0.05). Maximum nitrite concentrations were recorded 53.2 and 92.5 µg/l in Khamir and Tyab respectively. The annual correlation matrix showed that a positive correlation between phosphate concentration and nitrite and silicate (P〈0.05). Silicate concentration was very high, because of too low density of diatoms and radiolarians. Some species of diatoms, dinoflagellates, cyanobacteria and larvae of crustacea and echinoderms were observed with different density and diversity. Sediment composition of the studied areas were categorized in three classes (clay, sand and clay - sand). Polychaetes formed dominant group of benthic fauna in Tyab and Khamir areas. High density of capitellid worms was possibly related to some environmntal stress caused by activity of fishing and cargo vessels. It was not observed significant difference between fishes length in two areas (P〈0.05); Mean lengths of P. waltoni, B. dussumieri and S. tenuis were calculated 9.85, 14.7 and 11.5 cm respectively. Spawning period of each three species in both areas were obtained from late winter to late spring based on gonadosomatic index values. Male to female sex ratio of P. waltoni, B. dussumieri and S. tenuis were calculated 1:0.45, 1:0.41and 1:0.74 respectively. Absolute fecundity of P. waltoni, B. dussumieri and S. tenuis were estimated 3558 ± 2202, 3952 ± 1030 and 6742 ± 1939 respectively. P. waltoni feeds mainly on fiddler crab, S. tenuis uses crustaceans and gastropods and B. dussumieri has a vegetarian diet.
    Keywords: Ecology ; Iran ; Persian Gulf ; Hormozgan Province ; Mudskippers ; Ecology ; Periophthalmus waltoni ; Boleophthalmus dussumieri ; Scartelaos tenuis ; Female ; Male ; Benthic fauna
    Repository Name: AquaDocs
    Type: monograph
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  • 11
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25845 | 18721 | 2018-10-13 08:35:24 | 25845 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Biological characteristics of Liza klunzingeri were studied in two coastal areas, Sajaphi and Bahrekan, of eastern Khuzestan during March to February 2007. Among total 1880 measured fish specimens, 947 specimens were analyzed. The mean value of Gonado-somatic Index (GSI) for the male and female fish were calculated as 0.96± 1.39 and 3.25 ± 3.26 respectively. The GSI value was highest in November and lowest in July. The mean value of condition factor (K) was 1.25± 0.14 in male and 1.21± 0.15 for female. The highest K value were observed in June and the lowest value in February. The lenght at first maturity regardless of sexuality, was found to be 14.5 cm and the time of spawning based on reproduction pattern were determined in Nov- Dec. The length-weight relationship were calculated as Y=0.024L^2.76 (n=226R2=0.72) for males, Y=0.011L^3.00 (n=444R2= 0.78) for females and Y=0.0208L^2.82 (n=670R2 =0.82) for total fishes and also it’s found significant in level length weight relationship in (P〈0.05). According to biological characteristics and referring to American fisheries society (AFS) indices and Fuzzy logic expert system, Lize klunzingeri is classified as low vulnerable species.
    Keywords: Biology ; Iran ; Khuzestan province ; Sajaphi ; Bahrekan ; Lize klunzinger ; Gonado-somatic Index ; GSI ; Condition factor ; Biological characteristics ; Female ; Male ; Specimens ; Fisheries
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    Type: monograph
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  • 12
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    In:  http://aquaticcommons.org/id/eprint/22778 | 18721 | 2018-05-21 21:47:48 | 22778 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-10
    Description: In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. The results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). Results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p〉0.05). Our study showed maximum fertilization rate (98.5 %), survival rate until eyes pigmentation (91.17 %), hatching rate (94.5 %) and survival rate until absorption of yolk sack (97.16 %) for 4 years treatment group. Such positive relationships were detected between sperm production characteristics (spermatozoa concentration, spermatocrit and sperm volume) and fertilization parameters. Based on our results, it can be concluded that 4 year old males have high efficiency leading to fertilization success.
    Keywords: Aquaculture ; Biology ; Fisheries ; Age ; Male ; Artificial insemination ; Salmo trutta ; Biology ; Physiology ; Iran
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  • 13
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    In:  http://aquaticcommons.org/id/eprint/23906 | 18721 | 2018-08-01 16:06:14 | 23906 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: During the fishing season, the statistical study on biological observation was carried out in four fishing stations located in the south west of the Caspian Sea. During the research activity 2806 stellate sturgeon were sampled. The result revealed that the ratio of stellate eggs weight used in processing of caviar were 20.7% of the total weight of the body. The number of females were more than males in the catch (77.8%). In 1991 the average length of females was 134.1 cm and the average weight with internal organs was 11.86 kg. But the mean length and weight in 1993 were 120.5 cm and 11.6 kg. The average age for female and male were estimated 12 and 10 years old respectively. Among the samples 92.7% of females were in the fourth stage of maturity and 60.4% of males were in third stage of maturity. In spite of the fact that during 1984-1991 fishing effort for catching Acipenser had been increased, yielding caviar had been decreased. This state was continued until 1994. So it was revealed that increasing fishing efforts wasn't led to increase the exploitation of Acipenser stocks.
    Keywords: Biology ; Female ; Male ; Caviar ; Weight ; Body ; Biological ; Fishing ; Eggs ; Acipenser stellatus ; SW Caspian Sea ; Caspian Sea ; Iran
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  • 14
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    In:  http://aquaticcommons.org/id/eprint/23910 | 18721 | 2018-08-01 16:20:57 | 23910 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: Different length - weight relationship in 1000 male and 201 female of freshwater crayfish were studied and it was revealed that the length - length relationship is best described through linear regression, while weight - length relation is best described through a multimodel one. The "r" coefficient was over 90% in all cases. It was also shown that the average length of the females was more than the males, but the average weight of the males was more than the females. The percentage of males and females with total length more than 102 mm were 63.7% and 72.1% respectively.
    Keywords: Biology ; Length ; Weight ; Relationships ; Male ; Female ; Freshwater ; Astacus leptodactylus ; Crayfish ; Bandar Anzali ; Iran
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  • 15
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    In:  http://aquaticcommons.org/id/eprint/23941 | 18721 | 2018-08-01 17:58:17 | 23941 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: During a parasitological study on two Goby species, 15 Neogobius kesslerithe and 30 Neogobius fluviatilis caught in the South Caspian Sea and Tajan River (Mazandaran Province) respectively. The fish nematode Dichelyne minutus Rudalphi 1819 was isolated from 15 N kessleri and 2 N. fluviatilis. Both male and female specimen of this parasite, were observed in the intestine of 17 fishes, some of which had penetrated into the mucous membrane of the intestine. The infection rate in N. kessleri and N fluviatilis were 100% and 6.6% respectively.
    Keywords: Fisheries ; Health ; Nematoda ; Cucullanidae ; Neogobius fluviatilis ; Neogobius kessleri ; Goby ; Species ; Nematode ; Male ; Female ; Specimen ; Parasite ; Fishes ; Mucous ; Infection rate ; Dichelyne minutus ; Parasitological ; Caspian Sea ; Tajan River ; Mazandaran Province ; Iran
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  • 16
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    In:  http://aquaticcommons.org/id/eprint/23948 | 18721 | 2018-08-02 11:22:50 | 23948 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: Food habits and spawning season of Acanthopagrus latus (Sparidae) were studied in Bushehr, Delvar and Rostami waters of the Persian Gulf. Samples have been collected from March 1996 to February 1997 on a monthly basis. A total of 87 males and 95 females were examined and different biological parameters were measured. The Relative Length of the Gut (RLG) was estimated to be 0.64, which indicates that this is a carnivorous species. Food items have also been identified using numerical method. Out of 159 stomachs studied 36.36% were found to contain crabs, 33.99% other fish and 13.43% shrimps. The content of snails and sea urchins were 11/46% and 4/ 76% respectively. It is evident from the results of the study that A. latus feeds mainly on crabs and fish. The vacuity index was calculated to be 0.13. This indicated that this fish is an active predator. The Gonadosomatic Index (GSI) was estimated to be highest during February - March and lowest in June. GSI maxima was coincided with fecundity peak. The relationship between (GSI) and fish weight for females and males were r2=0.0235 and r2 =0.0214 respectively.
    Keywords: Biology ; Food Habits ; Spawning ; Acanthopagrus latus ; Sparidae ; Samples ; Male ; Female ; Length ; Gut ; RLG ; Species ; Numerical method ; Fish ; Shrimp ; Snail ; Sea urchins ; A. latus ; Feed ; Crab ; Vacuity index ; Gonado Somatic Index ; GSI ; Biological ; Delvar ; Bushehr ; Persian Gulf ; Iran
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  • 17
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25270 | 18721 | 2018-09-07 07:54:06 | 25270 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Sampling of Astacus leptodactylusc were conducted in order to determination of biometrical and biological parameters suchas length, weight, sex ratio, fecundity and natural reproduction time. Two transect were selected at 49 34 and 49 36 geographical position on east Caspian Sea near to Anzali city. Metallic folding trap with Silurus glanis as attractive diet were used to catch Astacus leptodactylusc at each line the traps were set on depth of 35, 45, 55 and 65 (5 trap at each depth). Random sampling from each depth on tow lin for one year were conducted and the biometry performed on catched Astacus leptodactylusc where their sext uality and their ration were determined for eacd month , season and whole year. Absolute fecundity determined by cooking Astacus leptodactylusc , taking out the ovary weighing and counting them .Working fecundity assesed by separating eggs from their swiming leges while enomerate all egg . Complete randomized test of ANOVA for analysing the data were employed. The results showed average length and welght were calculated 122/07±1/74mm and 57/96±1/81gr respectively. Average absolute fecundity was 310/22 ±10/72 eggs , average working fecundity was 251/84±8/84 eggs, Average ovary weight was determined 4.31±0.619 gr and average number of eggs in one gr was 74/52±1/53 eggs. The sextual ratio in all year long was 1:1.32. The reproduction season is about seven month from Feburary to July and the moulting of males occurs two times each year. One of time is at May and the other is in September. The female molt thtina as the male start for second time.
    Keywords: Biology ; Iran ; Caspian Sea ; Bandar Anzali ; Biology ; Astacus leptodactylus eichwaldi ; Sex ratio ; Fecundity ; Silurus glanis ; ANOVA ; Female ; Male ; Coastal water
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  • 18
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25330 | 18721 | 2018-09-13 12:40:49 | 25330 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Study of survey health management and diseases in hatcheries and fish farms can help us to knowledge and application control methods such as: prevention, treatment and increase high levels of production in hatchery and farms, finally. This survey carried out from 2005 to 2008 for 4 years in sturgeon hatcheries and farms of Golestan province. Sturgeon fishes include Huso Huso, Ship sturgeon, Acipenser persicus collected and for virology, bacteriology, fungius and hematology examined. Also, physicochemical parameters measured and recorded in different stages of culture. Results of this study showed that all of samples in virology was negative and did not observe any doubetful causes. In bacteriology CFU was variation from 3/9 ×105 to 6/9×10. The most parasites that detected in this survey was Cocolanus espherolanus, Sceria binopsulus semiarmatus and Amphilina fuliacea that separates from Acipenser Percicus, especially. The results about hematology parameters some important hematological indices of ship sturgeon include: The total RBC for female and mail specimens measured as 5.3±1.5 ×10^5, 4.8±0.5×10^5 per mm^3 respectively. The amount of haematocrit and hemoglobin for female and mail determined: 34.3±2.8, 35±1.4 percent and 10.3±0.9, 8.9±0.8 gr/dl .The MCV: 216.3± 96.2, 736.5± 102.5, MCH: 720.2±309.5, 186±0.7 and MCHC: 30±0.8, 25.5±3.4 percent respectively.The total WBC were (female, male): 21320±1054, 20580±777 per mm^3 and neutrophil: 16.4±2.5, 17±1.4 percent and lymphocyte: 74.4±2.4, 73.5± 0.7 percent and eosinophil: 6±1.4, 6.4±0.5 percent, monocyte: 2.8±0.8, 3.5±0.7 percent. There was not any significant differences (p〉0.05) between mentioned parameters in male and female (students t-test). Also evaluation of hematological parameters in bluga ( Huso huso) include: total RBC were (male , female) 5±0.3 ×105 , 4.9±0.6 ×105 per mm^3 ,respectively and hematocrit: 33.2±6.7 , 35.4±3.4 percent and hemoglobin: 11.2±1.5 , 12.2±1gr/dl and MCV: 669.9±172.2, 723.9±982.4 and MCH: 226.2±42.5, 249.5±35.4 and MCHC: 34.1±2.4, 34.6±3.6 percent respectively. The totals WBC were (male, female): 24800±707.1, 23042±1375.4 per mm^3 and neutrophil: 18.5±0.7, 21.4±1.1 percent and lymphocyte: 73.5±1.4, 68.4±1.1 percent and eosinophil: 5±2.8, 7±1.2 percent and monocyte: 3.5±3.5, 3.2±0.8 percent. According to statistically study the count of lymphocyte had significant difference between male and female fish and this count in male was higher than female. (p≥0.05).
    Keywords: Aquaculture ; Iran ; Golestan Province ; Mazandaran Province ; Guilan Province ; Fish ; Sturgeon ; Huso huso ; Ship ; Acipenser percicus ; Bacteriology ; Parasitology ; Health management ; Diseases ; Survey ; Aquaculture ; Hatcheries ; Samples ; Sceria binopsulus ; Amphilina fuliacea ; Female ; Male
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  • 19
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25182 | 18721 | 2018-09-03 17:06:03 | 25182 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: The biological aspects of Sepia pharaonis was studied during years 2006-07. The studied area restricted to the Bahrekan in Khouzestan province covering the depths of 2 up to 25m. The sampling methods were gillnet and bottom trawl. A total of 310 specimens collected, of which there wasn’t found any cuttlefish in the study area from July to October (5 months). The collected samples were transferred to the laboratory ashore for further biological measurements consist of: Mantle length, Body weight, sex determination. Gonado-Somatic Index, and determination of Spermatophoric Index, Spawning season, Food preference, Maturity stages and chemical analysis for food value determination. The results showed that the overall sex ratio is about M:F= 2:1 with percentage of 67.41% for males and 32.50% for females. Males are significantly bigger than females with average mantle length (ML) of 233.3 and 269.3 mm for female and male, respectively; with body weight of 1102.3 and 1450.6 g. The mantle length body weight relationship was found W=0.001 ML 2.540 (R2= 0.92) Female as: W= 0.0015 ML 4797 (R2= 0.93) male From point of feeding, the food preferences results indicated that fish is considered as main food, crabs as minor food and other marine organisms such as bivalvia and gastropods as random food. The highest vacuity Index (CV) and empty stomachs was determined for March-April and the lowest value was is December. Also, the maximum GSI was estimated for March-April months in which showing coherrances with the lowest food preference. The maximum spermatophoricfilaments were 856 and 45 for male pharaoh cuttlefish with mantle length of 300 and 185 mm, and on the other hand this values for fecundity were estimated 1589 and 53 for female specimens with 254 and 198 mm mantle length. The spawning season occurs in April- March in which accompany with migration of pharaoh cuttlefish towards shallow waters. The fishing season would be in this period in w.
    Keywords: Biology ; Iran ; Khouzestan province ; Bahrekan ; Sepia pharaonis ; Gillnet ; Sampling ; Specimens ; Weight ; Sex ; Gonado-somatic index ; Spawning ; Maturity ; Female ; Male ; Bivalvia ; Gastropods
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25127 | 18721 | 2018-08-26 13:33:35 | 25127 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: The present study was firstly conducted to study the rate of sexual maturity in Nereis diversicolor under suitable conditions of temperature and photoperiod. The second objective was to determine the potential of artificial breeding in these worms for mass culture. Nereis diversicolor worms were collected from the Anzali lagoon in 4000 sampling operations during the year’s 2004 to 2006 using Ekman grab with a surface area of 400 cm2. The water salinity, temperature and total organic matter (TOM) of sediments in the sampling region was recorded. The worms were maintained in 0.5 tons (1 x 1 m^2) tanks containing clayey-muddy sediment to a height of 20 cm covered with 10 cm water (5 ‰) until they reached a weight of 200-300 mg. Sexual maturity in this species was attained at 4-6 ºC and spawning occurred at approximately 16 ºC. The first gametes were observed five weeks after the temperature increased from 6 to 16 ºC. Sexual maturity was studied at various salinities (0.5, 5, 12, and 15 ‰). Results indicate that these worms attained earlier sexual maturity at salinity of 15 ‰, compared to other salinities studied. No significant differences (P〉0.05) were observed between sexual maturity attained at 12 ‰ and 15 ‰. Stocking density (20, 50, 100, 150 worms) was studied in terms of sex and showed that number of females were higher than males and the ratio was 11:1 (female: male). No significant differences (P〉0.05) were observed between the various stocking densities and their replicates. The effect of light and photoperiod in synchronizing reproduction in male and female N. diversicolor was studied. It was evident that reproduction behavior in adult worms increased for a period of one week at the end of each month after they are exposed to a prolonged photoperiod (L:D=16:8) followed by a period of dim light (simulated using 1 W lamps). Feeding trials were carried out with Saccharomyces cerevisiae, formulated fish diets and humus. Results showed that this diet was effective in speeding up sexual maturity in worms and significant effect of treatment was observed (P〈0.05) in worms fed a diet of humus alone. Eggs and sperms were fertilized and worms developed from the young monotrochophore with jelly layer to the trochophore larvae.
    Keywords: Biology ; Iran ; Anzali Lagoon ; Reproduction ; Sexual Maturity ; Fertilization ; Nereis Diversicolor ; Culture ; Salinity ; Temperature ; Spawning ; Female ; Male ; Larvae ; Sacchromyces cerevisiae ; Density
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25356 | 18721 | 2018-09-14 07:09:43 | 25356 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: This study was aimed to investigate the effects of different doses of two hormones and an anti-aromatase, i.e. 17a methyl testosterone (MT), methyl di hydrotestosterone (MDHT) or mestanolone and letozole in masculinization of Nile tilapia (Oreochromis niloticus) under the condition of brackish water in Bafgh station situated in Yazd province in center of Iran. Each experiment in this study was consisted of 5 treaments with 3 replicates each. A number of 1725 larvaes was distributed randomly among 15 replicates at the beginning of each experiment. Each experiment lasted 45 days and the larvaes were reared in aerated flow-through pots and fiberglass tanks filled with brackish water. The averages for temperature, salinity, pH and dissolved oxygen of water were 26.9 ê, 8 g/l, 7.6 and 5.78% respectively during this study. In experiment 1, three different doses of 40, 60 and 100 mg MT/k of feed were fed to different groups of 7 day post fertilization (dpf) larvaes for 45 days from the beginning of the experiment. The results showed that the larvaes in 40 mg group were 100 percent masculinized based on squash test performed at the end of the experiment but masculinization rates of those in 60 and 100 mg groups were 99.7 and 96.2 perecent respectively. Based on Dunkan test, total body length and weight averages measured in biometry 3 (at the end of the experiment) were not significantly different among groups but in biometry 2 (30 days after the beginning of experiment), they were significantly lesser only in 40 mg group (P〈0.05). There was significant differences in survival rate of different groups of larvaes in this experiment based on chi-square test (χ=31.166, P〈0.05) and the values in 40 and 100 mg groups (74.5 and 82.9% respectively) were lesser than those in 60 mg, control 1 and control 2 groups (84.3, 89.0 and 87.0 respectively). In experiment 2, masculinization rates of two different groups of larvaes immersed in 1800 µg MDHT/liter once in 10dpf and twice in 10 and 14dpf were 80.0 and 91.9 percent respectively. There were no significant differences in total body length and weight averages measured in biometry 2 between different groups but significant differences were observed in total body length only in biometry 3 (P〈0.05) where the highest values occurred in experiment 1 and control 1 groups and the lowest one in experiment 2. Significant differences observed in survival rate of different groups of larvaes in this experiment based on chi-square test (χ=15.165, P〈0.05) and the rates in experiment 1, control 2 and 3 groups (89.9, 86.4 and 89.9% respectively) were higher than those in experiment 2 and control 1 groups (82.0 and 82.3 respectively). In experiment 3, three different doses of anti-aromatse letrozole (200, 300 and 400 mg/k feed) were fed to different groups of 7 day post fertilization (dpf) larvaes for 45 days from the beginning of the experiment. The larvaes in 400 group .were all masculinized whereas the masculinization rates in 200 and 300 mg groups were 99.0 and 99.6% respectively. There were significant differences in total body length and weight averages measured in biometry 2 and 3 among groups in this experiment (P〈0.05) where the highest and the lowest values occurred in control 2 and experime2 groups respectively. Based on chi-square, the survival rate of different groups was significantly different (χ=41.119, P〈0.05) and the lowest rate occurred in experiment 2 group. No significant differences observed in gender ratios within all control groups in this study based on chi-square test. According to the findings acquired under the condition of brackish water at the present study, it would be potentially recommended to use MT and letrozole for the production of all male populations of Nile tilapia fish in order to provide fish farmers with no harmful environmental impacts on water sources in rivers and seas which occured due to the uncontroled breeding of tilapia. However, more research is needed to draw firm conclusions to use hormones and in especial anti-aromase letrozole because of the shortage of sufficient data in current references.
    Keywords: Aquaculture ; Iran ; Yazd province ; Bafgh ; Masculinization ; Nile tilapia ; 17α-methyl testosterone ; Methyl di hydro testosterone ; Mestanolone ; Body weight gain ; Total body lenght ; Brackish water ; Male ; Oreochromis niloticus ; Hormones ; Temperature ; Salinity ; pH ; Dissolved oxygen ; Fertilization ; Survival rate ; Larvae ; Investigation
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25404 | 18721 | 2018-09-20 12:28:18 | 25404 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Population dynamics parameters and exploitation ratio of Jinga Shrimp, Metapenaeus affinis were studied from Sep 2011 to Dec 2011 and data collected from two landing places (Hendijan and Lifee-Bosif). During the project, more than 2200 specimens of jinga shrimp were measured. The mean value of length for the male and female were calculated as 9.8±0.86, 10.24±1.18 and mean value of weight for the male and female was as 6.730±1.64, 8.14±2.90 respectively. The length-weight relation were calculated as TW=0.024TL2.24 (n=1084,R^2=0.71) for males, TW=0.011TL2.80 (n=1081,R^2= 0.81) for females also we found significant different level length-weight relation in P〈0.05. The growth parameters of von Bertalanffy equation were as, L_∞: 14.73 and K: 1.1 and t0: -0.02. The estimated valve of total mortality, natural mortality, fishing mortality and exploitation ratio is Z: 4.35, M: 1.68, F: 2.67, E: 0.61 respectively. By using method analyses knife-edge selection, relative yield per recruitment (Y'/R) :0.014, relative biomass per recruitment, (B'/R) :0.085., Exploitation ratio maximum sustainable yield, Emax : 0.38; biological reference points for Jinga Shrimp stock was calculated. MSY and fmsy value was 600T and 46100day respectively. Result in this study showed exploitation ratio Jinga Shrimp stock is over fishing and decreases exploitation ratio proposed.
    Keywords: Aquaculture ; Iran ; Khuzestan province ; Jinga Shrimp ; Population ; Dynamics ; Exploitation ; Tiger tooth Croaker ; Otolithes ruber ; Metapenaeus affinis ; Population ; Male ; Female ; Mortality ; Coastal waters
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  • 23
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25184 | 18721 | 2018-09-03 17:16:24 | 25184 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: During last 65 years the catch of mullets had increasing trends with some fluctuations in the Iranian coastal water of the Caspian Sea .In this period about 138 thousand tons of mullets have been caught. Mullet’s account for 35% of total catch annually .In recent years species composition of mullets has chanched in the Iranian coastal water of the Caspian Sea and catch composition of golden grey mullet increased from 76% in 1995 to 98% in 2006. In this survey some biological characteristics of golden grey mullet have been studied in Iranian coastal water of the Caspian Sea .Fish samples have been gathered from commercial catch of beach seine cooperatives monthly in Iranian coastal water of the Caspian Sea over 2006 and 2007. In the laboratory fishes have been measured biometrically and biological parameters have been calculated .Also catch statistics of mullets during 2006-2007 have been obtained and discussed. Results showed that the catch of mullets in beach seine cooperatives during 2006 and 2007 was 4181 and 3685 tons respectively that golden grey mullet contribute 99% and 98% of the catch composition of mullets respectively. Length range of golden grey mullet caught by beach seine cooperatives was 19-50.2 cm with mean length of 32.7 ± 6.4 (± SD) and weight range was 67-1475 gr with mean weight of 411 ± 255 gr. The age structure of this species was comprised 2-10 years old fish with mean age of 4.42 years old. In this survey totally the sex ratio of male: female of golden grey mullet was 356: 434 that was significant variation from equal sex ratio. Pick of the spawning in Guilan province was in October and in Mazandaran and Golestan provinces was in November. In October the proportion of spawning females declined from western area (Guilan province) towards eastern parts (Golestan province).The highest proportion of spawning females was in December in Golestan province. The highest GSI index value was observed in September and October and it was decreased in November and December and it was consistent during January till April. The mean absolute fecundity was 700881±429987 eggs with minimum and maximum fecundity of 200112 and 2282862 eggs respectively. The Lm 50% for female golden grey mullet was calculated as 33.6 cm.
    Keywords: Biology ; Iran ; Caspian Sea ; Golestan province ; Guilan province ; Golden grey mullet ; Liza aurata ; Species ; Survey ; Samples ; Male ; Female ; Sex ratio ; Spawning ; GSI ; Fecundity ; Coastal waters
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  • 24
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25202 | 18721 | 2018-09-05 16:22:51 | 25202 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: The Kutum, Rutilus frisii kutum, is one of the most important bony fishes in Iranian coastal of Caspian Sea. Its harvest range is between 9000-10000 tons in a year, nearly 60% of the income of Bony fish fishery produced by kutum fishery. The stock of this species reduced drastically in 1982 and the catch slumped to the less than 250 tons in a year. Kutum spawning grounds deterioration, illegal catch, and lack of restocking program were the main cause of the decline. This Spices in nature comprised by two distinct form, autumn and spring form. It is worth to be mentioned, by the effect of Caspian Sea Bony fishes Research Center s experts in 1983, artificial spawning and releasing the fries to the sea were commenced and the catch steadily improved. But all activities concerning restocking of kutum concentrated in spring form, as at present about 260 million its fries are released into sea for restocking by Iranian Fisheries Organization, but for above reasons and lack of restocking program, the populations of autumn form gravely shrinked and neared to be extinct. Therefore, to enhance the biodiversity and boost fishers livelihood of kutum in Caspian Sea this project implemented by cooperation of Iranian Fisheries Organization (IFRO) and Caspian Environment Program (CEP) in Aquaculture Institute (Inland Waters). In this project, brooders caught from Anzali lagoon and maintained in two different condition, include of floating cages in Anzali lagoon and earthen ponds in Sefidrud Fisheries Research Station. The results showed that there weren’t significant differences between two maintenance statuses in maturation period and other reproductive characteristics of brooders. The ratio of male to female was 1 to 1.4. Minimum and maximum weight measured 1450 to 3100 g (with average of 1850 g) in female and 670 to 1900 g (with average of 1165 g) in male, respectively. The first natural spawning of brooders occurred in the end of January in temperature of 8 till 10 °C in concrete ponds. Also, some of maintained brooders in earthen ponds spawned in February. The average number of absolute, function and relative fecundity determined 88565 16809, 73805 14008 and 48670 12056, respectively. For artificial spawning, male and female brooders injected by pituitary gland with dose of 2-3 and 4-5 mg/kg body weight, respectively. Approximately, 10 and 8 present of female were over-ripe and immature in March (artificial spawning time), respectively. More than 59 % of injected female brooders induced to spawning in first stage after 10-12 hours and 13 % of them in twice stage and 7-8 hours after first stage. And also, 27.6% of females didn’t positive response to injection. Dry method used for eggs fecundity and incubation period lasted 7- 10 days in 14-16 °C. In totally, eggs fertilization were more than 95% and the average of eggs fertilization percent in throughout of period measured more than 92.7 6 %. Eyed eggs appearance occurred 3 days after fecundity and its mean was 92.7 15.1%. Larvae after yolk sac absorption feed with dry milk for 4-5 days and then introduced into fertilized earthen ponds (500 m2 and equipped to aerators) in intensive condition and fed with micro pellet food for 3-4 month. In finally, more than 1.8 million fries of 1-2 g and some more than 5 g produced and released into Anzali lagoon to its restocking for first time. It is expected that continuing of restocking process of autumn form kutum by Iranian Fisheries Organization eventuate to population increasing of this form in Caspian Sea in future.
    Keywords: Aquaculture ; Iran ; Caspian Sea ; Anzali Lagoon ; Sefidrud River ; Artificial propagation ; Culture ; Rutilus frisii kutum ; Kutum ; Bony Fish ; Fishery ; Spawning ; Biodiversity ; Aquaculture ; Brooders ; Fecundity ; Male ; Female ; Population
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    In:  http://aquaticcommons.org/id/eprint/25928 | 18721 | 2018-11-22 07:18:23 | 25928 | Khorramshahr University of Marine Science and Technology
    Publication Date: 2021-07-16
    Description: Conservation of genetic diversity of juveniles used for restocking of natural populations requires serious attention in artificial breeding protocol of the Caspian brown trout Salmo trutta caspius. Unbalanced contribution of male and female breeders to progeny in present artificial breeding has resulted in the reduction of effective population size in breeders. Equalization of milt volume did not also result in balanced contribution of breeders. With regard to the possible effect of sperm concentration on contribution of breeders to production of progeny, effective population size in breeders and genetic diversity of progeny were determined in mixed milt fertilization of 6 male and 2 female breeders with equal sperm concentration and ova number. Parentage assignment was performed using exclusion method in FAP program by analyzing 9 microsatellite loci and choosing the 3 most polymorphic ones, Str 58, Str 73 and Str 591, in breeders. More than 91% of progeny were assigned to their parents. Effective population size was calculated as 5.24 (0.65) and the number of alleles and expected heterozygosity decreased in progeny (6.67 and 0.726 ± 0.011) compared to parents (7.33 and 0.808) significantly (P〉0.05). In conclusion, equalization of sperm concentration of male breeders did not result in the balanced contribution of male breeders to ova fertilization and production of progeny in mixed milt fertilization of Caspian brown trout and genetic diversity of progeny remained significantly decreased.
    Keywords: Biology ; Iran ; Equalization ; Sperm ; Concentration ; Male ; Salmo trutta caspius ; Fertilization ; Genetic ; Diversity ; Progeny
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    In:  http://aquaticcommons.org/id/eprint/25929 | 18721 | 2018-11-22 06:49:55 | 25929 | Khorramshahr University of Marine Science and Technology
    Publication Date: 2021-07-16
    Description: The crude protein content and amino acid compositions of muscle from wild and cultured of male and female Acanthopagrus latus were determined by HPLC. There were quantitative differences between individual amino acids in the tissues investigated, depending on the sex and location. It was noted that, among all the samples studied in tissues, sexes and locations, lysine and isoleucine were the principal essential amino acid (EAA) and glutamic acid was mainly for non-essential amino acid (NEAA). Lysine and isoleucine of male muscles had a significantly higher (P〈0.05) amount than female muscles. The crude protein content in male and female muscles was not found to be significantly different. Depending on location, the percentages of arginine, leucine, isoleucine, lysine, serine, glycine, alanine and tyrosine were significantly different (P〈0.05) in muscles of wild and cultured fish. The wild seabream possessed considerably higher protein content than cultured seabream muscle. The results showed that wild male fish muscle contained a higher (P〉0.05) level of EAA than other groups. The results indicate that the Acanthopagrus latus is a healthful component of the human diet.
    Keywords: Aquaculture ; Biology ; Iran ; Amino acid ; Composition ; Muscle ; Male ; Female ; Acanthopagrus latus ; NEAA ; Protein
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25801 | 18721 | 2018-10-13 08:37:23 | 25801 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: Due to the usefulness of shrimp broodstock pelleted diets, from aspects of, easier maintenance, transportation, broodstock feeding, and cheaper as compared to natural wet diets, the use of natural wet foods, include sand worm (Perinereis nuntica), cattle fish )Sepia pharaonis) and veal livier decreased and the quantity of pelleted diet increased. Survey was conducted, in tankes with a volume of 300 liters. Tanks were filled with 150 liters of water. 10 broodstock in each tank was left, with an average weight of 37±2 grams. Daily feeding rate, was twenty-five percent of their biomass. The survey was include, 9 treatments with 3 replicates in each tank as described below. Control treatment: broodstock feeding only with, sand worm (33%), cattle fish (34%) and bull livier (33%). Exprimental treatment 1: broodstock feeding with pelleted diet contain 50 percent crude protein and 8 percent crude fat (50%)+sand worm (16 %)+cattle fish (18%)+veal livier (16%). Treatment 2: broodstock feeding with pelleted diet contain 50 percent crude protein and 10 percent crude fat (50 %)+sand worm (16 %)+cattle fish (18%) and veal livier (16%). Treatment 3: broodstock feeding with pelleted diet contain 40 percent crude protein and 10 percent crude fat (50%)+sand worm (16 %)+cattle fish (18 %) and veal livier (16 %). Treatment 4: broodstock feeding with pelleted diet contain 40 percent crude protein and 8 percent crude fat (50 %)+sand worm (16 %)+cattle fish (18 %) and veal livier (16 %). Treatment 5: broodstock feeding with pelleted diet contain 50 percent crude protein and 10 percent crude fat (100 %). Treatment 6: broodstock feeding with pelleted diet contain 50 percent crude protein and 8 percent crude fat (100 %). Treatment 7: broodstock feeding with pelleted diet contain 40 percent crude protein and 10 percent crude fat (100 %). Treatment 8: broodstock feeding with pelleted diet contain 40 percent crude protein and 8 percent crude fat (100%). The results showed that, Gonadosomatic index (GSI) in treatments 3: control and 6, was significantly more than others treatments (p〈0.05). Hepatosomatic indexes, in often treatments was almost equal, and in some cases were significantly different (p〈0.05). In treatments 3 and control, absolute fecundity, was significantly more than others treatment (p〈0.05). The survival percent, in treatment 8 was significantly less than others treatments (p〈0.05). The survival percent in others treatments was not significantly difference (p〉0.05). From the aspect of mean weight of broodstock, wasn’t significant difference in treatments (p〉0.05). From the aspect of mean length of carapac, wasn’t significant difference in treatments (p〉0.05). From the aspect of mean body length, wasn’t significant difference in often treatments (p〉0.05), and in treatments 5 and 6 was significantly less than others (p〈0.05). In the determination of relasheship between kind of treatments and abundance of maturated broodsock, wasn’t significantly difference (p〉0.05). In the determination of, correlation between weight (g) and total length(cm), (r=0.71), weight and carapace length (cm) (r=0.70), the correlation was strong. Between GSI, HIS, carapace length and total length the correlation was intermediate (r=0.54). The correlation between absolutely fecundity and total length (r=0.20), absolutely fecundity and carapace length (r=0.28), absolutely fecundity and weight (r=0.35) was weak. The results showed that, the use of combination of pelleted diet and natural wet diets can increase female maturation indexes. Totally we can noted that, GSI, HIS and absolute fecundity of broodstock, that fed with pelleted diet contain 40 percent crude protein and 10 percent crude fat (50 %)+sand worm (16 %)+cattle fish (18 %) and veal livier (16 %) (treatment 3) was better than the other treatments. Positive effects of this treatnent on sexual indexes, was due to provide part of nutritional requirement of shrimp broodstock from pelleted diet.
    Keywords: Aquaculture ; Iran ; Natural wet diet ; Pelleted diets ; Maturation ; Male ; Female ; Western white shrimp ; Artifitial diets ; Broodstock ; Litopenaeus vannamei
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  • 28
    Publication Date: 2021-05-19
    Description: Thermostable chitinases are useful for industrial and biotechnological applications. This paper reports the stabilization of chitinase from Serratia marcescens B4A through rational mutagenesis. Changing of Ser 390 to Ile in S. marcescens. The stabilization was enhanced through entropic stabilization by reduction of the loop length and also by increasing of the beta chain length. With this replacement, polar uncharged residue changed to non-polar one and increased the hydrophobic interactions. Furthermore Isoleucine has branched β-carbon that restricts the backbone conformation more than non-branched residues. Finally all of these factors lead to entropic stabilization and thermal stabilization. The results exhibited that the optimal temperature and pH for enzyme activity of native chitinase were not changed by mutagenesis which showed that mutation didn’t affect the original characteristics of the enzyme, the Km values of native and mutant chitinase were different very little, showing that the affinity of enzyme towards the substrate and also the natural flexibility of chitinase did not change by mutation. Besides the Vmax value of the mutant chitinase was decreased, while its pH stability was increased briefly, but its thermal stability was increased remarkably. Mutation made chitinase to tolerate high temperatures up to 90°C. In addition its activity was increased at 50°C, 60°C for 120 min and up to 2 hours of incubation period and the mutant chitinase demonstrated a high level of activity at 60°C. These results show that entropic stabilization works well for chitinase and this approach may be generally applicable for stabilization of other proteins.
    Description: Published
    Keywords: Thermostable chitinases ; Biotechnology ; Mutation ; Enzymes ; Chitinase ; Thermal stability
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1046-1059
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  • 29
    Publication Date: 2021-05-19
    Description: Study of survey health management and diseases in hatcheries and fish farms can help us to knowledge and application control methods such as: prevention, treatment and increase high levels of production in hatchery and farms, finally. This survey carried out from 2005 to 2008 for 4 years in sturgeon hatcheries and farms of Golestan province. Sturgeon fishes include Huso Huso, Ship sturgeon, Acipenser persicus collected and for virology, bacteriology, fungius and hematology examined. Also, physicochemical parameters measured and recorded in different stages of culture. Results of this study showed that all of samples in virology was negative and did not observe any doubetful causes. In bacteriology CFU was variation from 3/9 ×105 to 6/9×10. The most parasites that detected in this survey was Cocolanus espherolanus , Sceria binopsulus semiarmatus and Amphilina fuliacea that separates from Acipenser Percicus, especially. The results about hematology parameters some important hematological indices of ship sturgeon include: The total RBC for female and mail specimens measured as 5.3±1.5 ×105, 4.8±0.5 ×105 per mm 3 respectively. The amount of haematocrit and hemoglobin for female and mail determined: 34.3±2.8, 35±1.4 percent and 10.3±0.9, 8.9±0.8 gr/dl .The MCV: 216.3± 96.2, 736.5± 102.5, MCH: 720.2±309.5, 186±0.7 and MCHC: 30±0.8, 25.5±3.4 percent respectively.The total WBC were (female, male): 21320±1054, 20580±777 per mm 3 and neutrophil: 16.4±2.5, 17±1.4 percent and lymphocyte: 74.4±2.4, 73.5± 0.7 percent and eosinophil: 6±1.4, 6.4±0.5 percent, monocyte: 2.8±0.8, 3.5±0.7 percent. There was not any significant differences (p〉0.05) between mentioned parameters in male and female (students t-test). Also evaluation of hematological parameters in bluga ( Huso huso) include: total RBC were (male , female) 5±0.3 ×105 , 4.9±0.6 ×105 per mm 3 ,respectively and hematocrit: 33.2±6.7 , 35.4±3.4 percent and hemoglobin: 11.2±1.5 , 12.2±1gr/dl and MCV: 669.9±172.2, 723.9±982.4 and MCH: 226.2±42.5, 249.5±35.4 and MCHC: 34.1±2.4, 34.6±3.6 percent respectively. The totals WBC were (male, female): 24800±707.1, 23042±1375.4 per mm 3 and neutrophil: 18.5±0.7, 21.4±1.1 percent and lymphocyte: 73.5±1.4, 68.4±1.1 percent and eosinophil: 5±2.8, 7±1.2 percent and monocyte: 3.5±3.5, 3.2±0.8 percent. According to statistically study the count of lymphocyte had significant difference between male and female fish and this count in male was higher than female. (p≥0.05).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physicochemical ; Hematology ; Fish ; Sturgeon ; Huso huso ; Ship ; Acipenser percicus ; Bacteriology ; Parasitology ; Health management ; Diseases ; Survey ; Aquaculture ; Hatcheries ; Samples ; Sceria binopsulus ; Amphilina fuliacea ; Female ; Male
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 395pp.
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  • 30
    Publication Date: 2021-05-19
    Description: This investigation carried out for the first time in Iran inorder to prodcution of monosex female and also sterilization in Rainbow trout. In this study, the eggs of general females were fertilized with the sperm of sex reversed male and so monosex female population was produced in second generation and sterilization carried out with oral administration of 17α methy 1 testosterone and immenrsion and oral administiration methods were used in embryonic stage and from commencing of acitve feeding of larvae, respectiverly. For sex reversal , 13 treatments were considered totally, that the most percentage of male (100%) was observedc in a treatment including of orally administration of 0.5 ppm hormone for 60 days after commencing active feeding (P〈0.001). In the other treamtnet, different percentages of sex ratio including male, female, intersex and sterility were observed. The offspring of genral eggs fertilization with the sperm of masculinized fish were 100% female, chisquare test was shown the treatment of orally administration of 30 ppm hormone for 120 days after commencing active feeding that had been considered for sterilization, was produced 90% sterile fish (P〈0.001) and was changed the sex ratio significancthy. Morphological changes of the gonads and sperm ducts in matured fish and also histological changes in the gonads of fish in the treamtints were considerable.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Morphological ; Histological ; Monosex ; Female ; Male ; Sterilization ; Rainbow trout ; Eggs ; Fertilized ; Sperm ; Population ; Sex ; Fish ; Oncorhynchus mykiss ; Rainbow trout
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 58pp.
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  • 31
    Publication Date: 2021-05-19
    Description: We used Mercury Analyzer to assess possible correlation between length and weight of the Kutum Roach (Rutilus frisii kutum) and mercury accumulation in different tissues of the fish. We collected fish specimens from central south Caspian Sea from October to December 2005. After biometrical measurement of samples and sex determination, mercury concentration was assessed in muscle, liver and skin tissues of the specimens. The mean concentration of mercury in muscle, liver and skin tissues was 849.9, 670.9 and 493.7ng/g respectively. Statistical analysis of the results showed a significant difference between mercury amounts in different tissues (P〈0.05). No significant difference was found between male and female fishes in terms of mercury concentration (P〉0.05). The mercury amount in muscle of Kutum Roach was lower than permissible limits proposed by FDA (1000ng/g).
    Description: Published
    Keywords: Mercury ; Rutilus frisii kutum ; Length ; Weight ; Tissue ; Kutum Roach ; Specimens ; Muscle ; Liver ; Male ; Female ; FDA
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.97-102
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  • 32
    Publication Date: 2021-05-19
    Description: Otolithes ruber is one of the valuable commercial fishes in the South coasts of Iran and has been classified at the top level of commercial categorization, so owing to its economic importance, its biological characteristics were studied in Sistan & Baluchestan coasts in 1995. Three landing called Pozm, Bris and Remin were chosen for commercial catch sampling in this respect and 111 male fish and 149 female ones were autopsied within 7 months of evaluation. In feeding evaluation through numerical method, Squilla with 42.8% and Engraulidae with 1.4% consisted maximum and minimum percent of male fish stomach contents, respectively, and for female maximum and minimum percent of stomach contents were unidentified bony fishes with 35.7% and polynemidae family with 7%. The results showed that male fishes mature prior to females as they are smaller than females and no important difference was seen in sexual ratios in various month except March. Spawning was from December to the end of April and an outstanding spawning surge was observed from March to April. However, there was a light surge in November. The least coefficients of fatness in terms of male and female were 0.9 and 1 in April respectively and the most ones were 1.33 for male and 1.20 for female in January.
    Description: Published
    Keywords: Commercial ; Biological ; Feeding ; Spawning ; Otolithes rubber ; Croaker Fish ; Fishes ; Sampling ; Male ; Female ; Squilla ; Engraulidae ; Stomach contents ; Polynemidae
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.23-34
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  • 33
    Publication Date: 2021-05-19
    Description: We assessed concentration of heavy metals (Zn, Cu, Pb, Cd) in the muscle tissue of Mugil auratus caught from important parts of Caspian Sea in Mazandaran Province in autumn 2002. After biometrical measurements, the muscle tissue of 32 randomly selected fish were separated using standard method MOOPAM 1999. Metals were extracted from the tissues using Closed Digestion method and acidic mixture (Moopam, 1983). Concentrations of the heavy metals were measured by FAAS (AAS4 Zeiss Gennany). Mean concentrations for Zn, Cu, Pb, Cd (14.327, 0.996, 2.337 and 0.321 ppm/dry weight) were compared with the international standards such as WHO, UK (MAFF), and NHMRC. A T. test showed higher than normal concentration of Pb, Cd in the muscle tissues. We found a positive linear relationship between accumulation of Zinc and Cadmium with weight, sex and standard length factors a negative linear relationship between accumulation of Pb with weight, sex and standard length. There was no significant relationship between accumulations of Cu with the biometrical factors of the sampled fish. Also, no relationship was found between sex and accumulation of Zn, Cu, Pb, Cd, while the accumulation of Pb in male samples were more than female ones.
    Description: Published
    Keywords: Biometrical ; Muscle tissue ; Heavy metals ; Mugil auratus ; Size ; Sex ; Length ; Weight ; Male ; Female
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-18
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  • 34
    Publication Date: 2021-05-19
    Description: During last 65 years the catch of mullets had increasing trends with some fluctuations in the Iranian coastal water of the Caspian Sea .In this period about 138 thousand tons of mullets have been caught. Mullet’s account for 35% of total catch annually .In recent years species composition of mullets has chanched in the Iranian coastal water of the Caspian Sea and catch composition of golden grey mullet increased from 76% in 1995 to 98% in 2006. In this survey some biological characteristics of golden grey mullet have been studied in Iranian coastal water of the Caspian Sea .Fish samples have been gathered from commercial catch of beach seine cooperatives monthly in Iranian coastal water of the Caspian Sea over 2006 and 2007. In the laboratory fishes have been measured biometrically and biological parameters have been calculated .Also catch statistics of mullets during 2006-2007 have been obtained and discussed. Results showed that the catch of mullets in beach seine cooperatives during 2006 and 2007 was 4181 and 3685 tons respectively that golden grey mullet contribute 99% and 98% of the catch composition of mullets respectively. Length range of golden grey mullet caught by beach seine cooperatives was 19-50.2 cm with mean length of 32.7 ± 6.4 (± SD) and weight range was 67-1475 gr with mean weight of 411 ± 255 gr. The age structure of this species was comprised 2-10 years old fish with mean age of 4.42 years old. In this survey totally the sex ratio of male:female of golden grey mullet was 356: 434 that was significant variation from equal sex ratio. Pick of the spawning in Guilan province was in October and in Mazandaran and Golestan provinces was in November. In October the proportion of spawning females declined from western area (Guilan province) towards eastern parts (Golestan province).The highest proportion of spawning females was in December in Golestan province. The highest GSI index value was observed in September and October and it was decreased in November and December and it was consistent during January till April. The mean absolute fecundity was 700881 ± 429987 eggs with minimum and maximum fecundity of 200112 and 2282862 eggs respectively. The Lm 50% for female golden grey mullet was calculated as 33.6 cm.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Commercial ; Golden grey mullet ; Liza aurata ; Species ; Survey ; Samples ; Male ; Female ; Sex ratio ; Spawning ; GSI ; Fecundity ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 56pp.
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  • 35
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    Publication Date: 2021-05-19
    Description: The biological aspects of Sepia pharaonis was studied during years 2006-07. The studied area restricted to the Bahrekan in Khouzestan province covering the depths of 2 up to 25m. The sampling methods were gillnet and bottom trawl. A total of 310 specimens collected, of which there wasn’t found any cuttlefish in the study area from July to October (5 months). The collected samples were transferred to the laboratory ashore for further biological measurements consist of: Mantle length, Body weight, sex determination. Gonado-Somatic Index, and determination of Spermatophoric Index, Spawning season, Food preference, Maturity stages and chemical analysis for food value determination. The results showed that the overall sex ratio is about M:F= 2:1 with percentage of 67.41% for males and 32.50% for females. Males are significantly bigger than females with average mantle length (ML) of 233.3 and 269.3 mm for female and male, respectively; with body weight of 1102.3 and 1450.6 g. The mantle length body weight relationship was found W=0.001 ML 2.540 (R2= 0.92) Female as: W= 0.0015 ML 4797 (R2= 0.93) male From point of feeding, the food preferences results indicated that fish is considered as main food, crabs as minor food and other marine organisms such as bivalvia and gastropods as random food. The highest vacuity Index (CV) and empty stomachs was determined for March-April and the lowest value was is December. Also, the maximum GSI was estimated for March-April months in which showing coherrances with the lowest food preference. The maximum spermatophoricfilaments were 856 and 45 for male pharaoh cuttlefish with mantle length of 300 and 185 mm, and on the other hand this values for fecundity were estimated 1589 and 53 for female specimens with 254 and 198 mm mantle length. The spawning season occurs in April- March in which accompany with migration of pharaoh cuttlefish towards shallow waters. The fishing season would be in this period in w.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Chemical ; Sepia pharaonis ; Gillnet ; Sampling ; Specimens ; Weight ; Sex ; Gonado-somatic index ; Spawning ; Maturity ; Female ; Male ; Bivalvia ; Gastropods
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 85pp.
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  • 36
    Publication Date: 2021-05-19
    Description: Nonylphenol (NP) is an endocrine disrupting chemical which has been shown to be able tomodulate endocrine system of various organisms by different mechanisms. The objective of this study was to investigate the potential effects of 4-NP and 17-β - estradiol (E2) on the immune parameters (IgM levels and lysozyme activity) of the teleost Koi carp (Cyprinus carpio carpio) for a better understanding of the immunereproductive system interactions. The experimental fishes were injected with ascending doses (10, 50,100 μgg^-1 body weight) of 4- nonylphenol (4-NP) and (2 μgg^-1 body mass) of 17-β-estradiol (E2) or vehicle during 3 weeks. After 21 days, the fishes (180) were anesthetizedand their blood samples were collected from caudal vein, then they were dissected and sexually separated by gonad characters. The measurement of immune parameters in plasma showed that 4-NP induced significant increase in the IgM levels and lysozyme activity at dose of 50 μgg^-1 while the levels of these parameters in the higher doses (100 μgg^-1 ) decreased compared with the control group (p〈0.05). In addition the treatment, with 2 μgg^-1 E2 significantly decreased both the IgM levels and lysozyme activity after 21 days of injection. These results indicated that 4-NP and E2 could lead to disturb the balance of immune system with potential consequences for immature koi carp.
    Description: Published
    Keywords: 4-nonylphenol ; 17-β-estradiol ; Immune-reproductivesystem ; Immunoglobulin IgM ; Lysozyme ; Koi carp ; Cyprinus carpio carpio ; Disruption ; Growth performance ; Female ; Male
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.725-744
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  • 37
    Publication Date: 2021-05-19
    Description: Possibility of producing all-female rainbow trout (Oncorhynchus mykiss) using neomale stock were investigated in Kelardasht hatchery. To do this, we compared the fertilization, hatching rate and growth parameters of progeny in the first year of culture. Histological studies of gonads showed that progenies produced by mating sex-reversed males and normal females were totally female. Eyed-stage egg, hatching and early survival rate in all-female population were 90:69 %, 97.36 %, 91.49 % and in mix sex population were 70.24 %, 98.22 %, 90.73 %, respectively, showing no significant differences (P〉0.05). Lack of maturation in the first year cultured fish led to the identical growth parameters in mix sex and all-female groups (P〉0.05). Results showed that use of sex-reversed males can be one of the best and successful methods of producing all-female populations.
    Description: Published
    Keywords: Histological ; Rainbow Trout ; Oncorhynchus mykiss ; Male ; Female ; Growth ; Culture ; Sex reversed ; Neomale stock ; Hatchery ; Fertilization ; Gonads ; Survival rate
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.45-54
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  • 38
    Publication Date: 2021-05-19
    Description: In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. The results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). Results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p〉0.05). Our study showed maximum fertilization rate (98.5 %), survival rate until eyes pigmentation (91.17 %), hatching rate (94.5 %) and survival rate until absorption of yolk sack (97.16 %) for 4 years treatment group. Such positive relationships were detected between sperm production characteristics (spermatozoa concentration, spermatocrit and sperm volume) and fertilization parameters. Based on our results, it can be concluded that 4 year old males have high efficiency leading to fertilization success.
    Description: Published
    Keywords: Biology ; Physiology ; Age ; Male ; Artificial insemination ; Salmo trutta
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.328-335
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  • 39
    Publication Date: 2021-05-19
    Description: In this study, the stage of gonadal development, type and season of spawning of Otolithes ruber in the North West of Persian Gulf were identified. O.ruber maturation and spawning were studied by macroscopic, microscopic, and histologic observation of gonads which obtained from October 1996 to September 1997 in Khouzestan coasts. In the histologic sections of gonad tissue, stages I to VII of gonadal development were distinguished. Post Spawning follicules were observed only in stages VI and VII (in April and May). Atretic ovums were also clearly observed in these stages. Frequency of Ovum diameter distribution in stages II to V is a unimodal which proves that annual maturation of ovums and spawning of this species are simultaneous. The highest level of GSI was observed in March and also higher stages 01' gonadal maturation were observed in March and April. Fast drop in GSI in May and within occurrence of both spawning and spent individuals in only two months of the year shows the relatively short spawning season is spring (April-May). Sexual maturation of females occured after the males and its first length in females was 216 mm.
    Description: Published
    Keywords: Histologic ; Macroscopic ; Microscopic ; Maturation ; Spawning ; Otolithes ruber ; Croaker Fish ; Gonadal ; O.ruber ; Gonads tissue ; Follicules ; Atretic ovums ; Species ; GSI ; Female ; Male ; Length ; Sexual
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-22
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  • 40
    Publication Date: 2021-05-19
    Description: The indian white prawn (Penaeus indicus), as one of the commercially important and dominant species along the East coast of Hormozgan province, is a very potential and prospective candidate species for shrimp farming. Since, there wasn't well enough information about biology of this species from Iranian wateres, therefore. some biological aspects such as growth rate, reproduction behaviour distribution pattern and feeding habits were studied from March 1997 to March 1998. Monthly sampling were carried out from the fishing grounds and estuaries of Jask area in the Oman Sea by small trawlers and beach seines gears. Initial growth 01 male was faster than female, with calculated K=l.5 for male and K=1.3 for female. Isometric growth trend was observed in both sexes. Sexual maturity attained within the first 12 months. Spawners were occured abundantly during post-winter, spring and beginning of summer. Postlarvae and sub-adults were found in the esturies with 25-100 mm length, and high densities were observed around the mangrove's roots. They spend at least 3 to 5 months of their life span in the esturies. Analysis of stomach contents revealed that this species is an omnivore with indicative contents of detritus, polychaetes, crustaceane, bivalves, algae and sand particles, with preponderance of vegetable constituents in the sub-adults and of detritus in adults.
    Description: Published
    Keywords: Commercially ; Biological ; Penaeus Indicus ; Growth ; Spawning ; Feeding ; Indian White Prawn ; Species ; Shrimp farming ; Male ; Female ; Polychaetes ; Bivalves ; Algae ; Sand particles ; Crustaceane
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.43-52
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  • 41
    Publication Date: 2021-05-19
    Description: Effects of three levels of Rainbow Trout male age (2+, 3+ and 4+ years old), on duration of sperm motility, spermatocrite and eyed egg rate in rainbow trout were studied in Kelardasht Fish Breeding Center. The sperm from 2+ year old males activated by water showed the shortest motility (24.86 sec) (P= 0.007), while those of the 3+ and 4+ years old revealed the longest sperm motility. No significant difference was found between sperm motility of the 3+ and 4+ males. The average spermatocrite in different age groups of male fish was significantly different. This was showed to be 32.66% in 2+ years and 23.26% in 3+ year's male age groups respectively. Eyed egg rate was highest in 2+ years age (86/82%), and was significantly different with the 3+ age group (P=0.02). The eyed egg rate of the 4+ age group was not significantly different with those of the 2+ and 3+ age groups.
    Description: Published
    Keywords: Male ; Rainbow Trout ; Oncorhynchus mykiss ; Sperm motility ; Spermatocrite ; Breeding ; Fish ; Age ; Sperm
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.119-128
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  • 42
    Publication Date: 2021-05-19
    Description: This study was carried out to determine artificial breeding normatives of Russian Sturgeon (Acipenser gueldenstaedti). In this research, which was conducted in Shahid Marjani Breeding Center in late winter, 27 female and 13 male broodstocks were used. All broodstocks were provided from Turkeman and Mianghaleh fishing ground in the Caspian Sea. After maintaining them at Kurinski ponds and determination of germinal vesicle in the oocytes, 15 female and 13 male broodstocks were injected by 60-75 and 40-55 mg of pituitary hormone, respectively. After maturity duration, 10 female and 5 male broodstocks showed response to the hormone injection. Some parameters such as maturity duration, number of oocytes per gram, oocyte diameter, weight and bodymass of oocyte, motility and density of spermatozoid, duration of reaching to 4 and 16 divisions, incubation duration, fertilization percentage in each stage, mortality rate during incubation, number of larvae resulted from each broodstock, number of larvae per gram, weight of each larvae as well as some morphometric parameteres and age for each broodstock were determined.
    Description: Published
    Keywords: Acipenser gueldenstaedtii ; Artificial breeding ; Normatives ; Russian Sturgeon ; Female ; Male ; Broodstocks ; Maturity ; Spermatozoid ; Fertilization ; Mortality rates ; Larvae ; Morphometric
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.77-92
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  • 43
    Publication Date: 2021-05-19
    Description: We used electroshocker, cast net and gillnet twice a week in four areas of Anzali Lagoon from April to September 2001 to sample common carp (Cyprinus carpio). Specimens were subjected to biometric measurements in the lab. In all, eighteen morphometric and seven meristic measurements were done on the samples. We determined the equation for the fish total fork length and body weight for males and females. Also, Van Bertalanffy growth model was applied to the male and female fish.
    Description: Published
    Keywords: Common Carp ; Cyprinus carpio Linnaeus ; Morphometric ; Gillnet ; Sample ; Specimens ; Fish ; Length ; Weight ; Male ; Female
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.141-154
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  • 44
    Publication Date: 2021-05-19
    Description: This research has been conducted in Tonekabon River in 1996. 190 fish samples were taken from different age groups of 0+, 1+, 2+, 3+, 4+. Results indicated that the highest and lowest abundant were %63, %5.7 in Dohezar and intersection of Dohezar and Cehezar respectively. Maximum body length and weight were 175mm and 84.5g in Dohezar respectively. Minimum body length and weight were 27mm and 0.39 g in Cehezar, respectively. Highest abundant belonged to 2 years age group with 112.3mm average length. Sex ratio was 1:1.4 (female to male). Condition factor of male and female were almost equal (1.268 and 1.257 respectively). Highest feeding intensity was in spring and the lowest was in autumn. Main preys were Simulium, Plecoptera and Ephemeroptera. Growth was positive algometric. Absolute fecundity ranged between 168-379 with an average of 268 eggs.
    Description: Published
    Keywords: Biological ; Brown Trout ; Salmo trutta fario ; Fish ; Samples ; Length ; Weight ; Sex ratio ; Female ; Male ; Feeding ; Simulium ; Plecoptera ; Ephemeroptera ; Algometric ; Eggs
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.21-34
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  • 45
    Publication Date: 2021-05-19
    Description: A research experiment was conducted to provide a protocol for seminatural propagation and rearing of Roach up to release size. The attempt was made to combat the declining trend in the population size and catch of the fish in the Caspian Sea. The optimum temperature for spawning brood-stocks lasts from middle March to late April when the ambient temperature range is 12-17 ֯C. During the four months research period, brood stocks were caught in the estuary of the Gorganrood in Golestan Province, north east Iran. The stocks were released into 2 hectare earthen ponds enriched with manure and fertilizers. Artificial spawning grounds made of pine branches were placed in the ponds. Ponds were stocked with 700 female breeders with an average weight of 150 grams and around 350 male breeders weighing 100 grams on average. Spawning and fertilization of eggs occurred in the ponds of which an estimated 80-90% eyed that were observed from the fifth day onwards. The starting of hatching was observed in the 6th day and yolk sac absorption was observed in day 4 to 6. The larvae were fed on natural zooplankton and artificial food. Assessment of 146 fries for ingested food indicated that the fries fed on Rotifer (Rotatoria sp. and Daphnia sp.) in the ponds. The length-weight relationship was not significantly different among the ponds and also specific growth rates (SGR) did not show any difference in the fries. The relative gut length in the fries were smaller than I (RLG〈1) and fries with an average weight of 0.5 to 1 gram were released into their natural habitat.
    Description: Published
    Keywords: Seminatural propagation ; Roach ; Rutilus rutilus caspicus ; Feeding ; Growth ; Rearing ; Temperature ; Spawning ; Estuary ; Female ; Male ; Fertilization ; Zooplankton ; Rotifer ; Rotatoria sp. ; Daphnia sp. ; Fries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.165-170
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  • 46
    Publication Date: 2021-05-19
    Description: This study was carried out to determine the effect of size of Barbus grypus broodstocks on reproductive ...
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Broodstock ; Hormone ; Male ; Female
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 129pp.
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  • 47
    Publication Date: 2021-05-19
    Description: During the fishing season, the statistical study on biological observation was carried out in four fishing stations located in the south west of the Caspian sea. During the research activity 2806 stellate sturgeon were sampled. The resualt revealed that the ratio of stellate eggs weight used in processing of caviar were 20.7% of the total weight of the body. The number of females were more than males in the catch (77.8%) . In 1991 the average lenght of females was 134.1 cm and the average weight with internal organs was 11.86 kg. But the mean lenght and weight in 1993 were 120.5 cm and 11.6 kg. The average age for female and male were estimated 12 and 10 years old respectively. Among the samples 92.7% of females were in the fourth stage of maturity and 60.4% of males were in third stage of maturity. In spite of the fact that during 1984-1991 fishing effort for catching Acipenser had been increased, yielding caviar had been decreased. This state was continued until 1994. So it was revealed that increasing fishing efforts wasn't led to increase the exploitation of Acipenser stocks.
    Description: Published
    Keywords: Acipenser stellatus ; Female ; Male ; Caviar ; Weight ; Body ; Biological ; Fishing ; Eggs
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.49-64
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  • 48
    Publication Date: 2021-05-19
    Description: During one year period, 603 specimens of white cheek shark (Carcharhinus dussumieri) were examined monthly. Results indicated that, sex ratio is 1:1.13 (Male To female). Maturity occured along with increase in ovary and testis weight, increasing ova diameter, uterine width, and also increase in clasper length and its calcification. Size at first maturity of males was (Total Length). Size at 50% maturity (LM50) was 690mm in males and 680mm in females (T.L). This shark has placental attachment and an umbilical cord. Number of embryos ranged from 1 to 5 and mainly were 2. Maximum length of male and female embryos were 380 and 385 mm (T.L) respectively. Pubs had umbilical scars which remains for some times. Lengths ranged from 345-490 and 350-425 mm (T.L) for males, and females respectively. Sexual reproduction continue throughout the year, with a pick of mating in spring and a distinct pregnancy period from October to April and a pick of parturition in June to July.
    Description: Published
    Keywords: Biology ; White Cheek Shark ; Carcharhinus dussumieri ; Placental ; Umbilical ; Embryos ; Parturition ; Sex ratio ; Size ; Male ; Female
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.1-18
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  • 49
    Publication Date: 2021-05-19
    Description: As part of the identification and distribution mapping of Clupeid fish in southern Caspian Sea, we studied abundance and species diversity of the fish in Mazandaran and Golestan Coastal waters during August-April 1999 to 2001. In the 336 specimens studied, four species were identified including Alosa braschnikowi. Alosa caspia, Alosa saposchnikowi and Alosa kessleri. The most abundant species was Alosa braschnikowii comprising 84.4% of the individuals and Alosa kessleri was the least abundant comprising 3.2% of the sample. We also traced an increasing trend in abundance of Alosa braschnikowii from east to west such that 43.8% of the fish found in Golestan Province waters and 56.2% in Mazandaran Province waters. The highest fork length and weight was recorded as 395 mm and 760.3 grams respectively for Alosa braschnikowi and the lowest was recorded for Alosa caspia with 110 mm and 109 grams respectively. In Alosa braschnikowi male were dominant and relative abundance of male and female in Mazandaran Province was 44.2% and 55.8% respectively. In Golestan, the relative male and female abundance of Alosa braschnikowi was 30.6% and 69.4% respectively. Female to male sex ratio in the A. braschnikowi was 1:1.26 and 1:2.26 respectively in Mazandaran and Golestan provinces. Overall female to male sex ratio was calculated as 1:1.6 for the species. The caught A. braschnikowi were in 1+ to 6+ age groups with the 2+ group comprising 28.9% and 1+ and 6+ comprising 8.9% of the sample.
    Description: Published
    Keywords: Clupeidae ; Alosa braschnikowi ; Alosa caspia ; Alosa kessleri ; Specimens ; Species ; Diversity ; Length ; Weight ; Female ; Male ; Abundance ; Alosa saposchnikowii
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.21-32
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  • 50
    Publication Date: 2021-05-19
    Description: Different length - weight relationship in 1000 male and 201 female of freshwater crayfish were studied and it was revealed that the length - length relationship is best described through linear regression, while weight - length relation is best described through a multimodel one. The "r" coefficient was over 90% in all cases. It was also shown that the average length of the females was more than the males, but the average weigth of the males was more than the females. The percentage of males and females with total length more than 102 mm were 63.7% and 72.1% respectively.
    Description: Published
    Keywords: Astacus leptodactylus ; Crayfish ; Length ; Weight ; Relationships ; Male ; Female ; Freshwater
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.9-18
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  • 51
    Publication Date: 2021-05-19
    Description: A new formulation of GnRH and synthetic compound of anti-dopamine domperidone was used for the first time in Iran to determine suitable physiological indexes for reproduction and to resolve the present problems of artificial reproduction in stellate sturgeon Acipenser stellatus. The study was conducted on 60 breeder Acipensers including 40 female and 20 male specimens. The fish were caught at stations in the vicinity of the SefidRud River in Guilan Province. Male spawners were treated using single injection method while females received dual injection (Bio-physiological control). Propylene glycol (PG) was administered after the muscular injection near the second dorsal scute to increase the viscosity of the solution during absorption. Depending on the stage of sexual maturity in the fish, GnRH at doses of 5, 10, 15, 20, 30 µg/kg BW was used in combination with a dose of I or 2 mg kg of domperidone. The position of G V was used as an index to determine sexual maturity in females while in males sexual maturity was determined on the basis of testis and sperm quality. The female fish showed GV in a range of 3.64 to 14.30. The results indicated that reduction of stress during catch, transportation, maintenance and handling and selection of breeders with suitable morphology will result in increased reproduction success. It was also found that male breeders given a dose of 20 and 30 µg/kg BW GnRH along with 1 and 2 mg kg of domperidone respectively were the most successful in spermiation. For female breeders, those received a dose of 10, 15 and 20 µg/kg BW GnRH along with 2 mg/kg of domperidone exhibited the most suitable conditions in ovulation. These females responded well to artificial breeding provided they possessed G V in the range of 3.64 to 14.30 depending on the water temperature until the germinal vesicle broke down (in vivo). Alleviating stress during capture, handling, transport and confinement, selecting breeders with suitable morphology and identifying correct stage of sexual maturity are the factors that help achieve higher production by substituting GnRH with a combination of GnRH and domperidone. Therefore, this compound is recommended as a suitable substitute for pituitary extract and other gonadotrophic analogues in the artificial breeding of Acipenser stellatus.
    Description: Published
    Keywords: Physiological ; Bio-physiological ; Morphology ; Artificial breeding ; Acipenser stellatus ; Domperidone ; GnRH ; Sturgeon ; Female ; Male ; Specimens ; Propylene glycol ; Sexual maturity ; Gonadotrophic
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.31-48
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  • 52
    Publication Date: 2021-05-19
    Description: During a parasitological study on two Goby species, 15 Neogobius kesslerithe and 30 Neogobius fluviatilis caught in the South Caspian Sea and Tajan River (Mazandaran Province) respectively. The fish nematode Dichelyne minutus Rudalphi 1819 was isolated from 15 N kessleri and 2 N. fluviatilis. Both male and female specimen of this parasite, were observed in the intestine of 17 fishes, some of which had penetrated into the mucous membrane of the intestine. The infection rate in N. kessleri and N fluviatilis were 100% and 6.6% respectively.
    Description: Published
    Keywords: Parasitological ; Nematoda ; Cucullanidae ; Neogobius fluviatilis ; Neogobius kessleri ; Goby ; Species ; Nematode ; Male ; Female ; Specimen ; Parasite ; Fishes ; Mucous ; Infection rate ; Dichelyne minutus
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.31-38
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  • 53
    Publication Date: 2021-05-19
    Description: This study was aimed to investigate the effects of different doses of two hormones and an anti-aromatase, i.e. 17 methyl testosterone (MT), methyl di hydrotestosterone (MDHT) or mestanolone and letozole in masculinization of Nile tilapia (Oreochromis niloticus) under the condition of brackish water in Bafgh station situated in Yazd province in center of Iran. Each experiment in this study was consisted of 5 treaments with 3 replicates each. A number of 1725 larvaes was distributed randomly among 15 replicates at the beginning of each experiment. Each experiment lasted 45 days and the larvaes were reared in aerated flow-through pots and fiberglass tanks filled with brackish water. The averages for temperature, salinity, pH and dissolved oxygen of water were 26.9 ê, 8 g/l, 7.6 and 5.78% respectively during this study. In experiment 1, three different doses of 40, 60 and 100 mg MT/k of feed were fed to different groups of 7 day post fertilization (dpf) larvaes for 45 days from the beginning of the experiment. The results showed that the larvaes in 40 mg group were 100 percent masculinized based on squash test performed at the end of the experiment but masculinization rates of those in 60 and 100 mg groups were 99.7 and 96.2 perecent respectively. Based on Dunkan test, total body length and weight averages measured in biometry 3 (at the end of the experiment) were not significantly different among groups but in biometry 2 (30 days after the beginning of experiment), they were significantly lesser only in 40 mg group (P〈0.05). There was significant differences in survival rate of different groups of larvaes in this experiment based on chi-square test (χ=31.166, P〈0.05) and the values in 40 and 100 mg groups (74.5 and 82.9% respectively) were lesser than those in 60 mg, control 1 and control 2 groups (84.3, 89.0 and 87.0 respectively). In experiment 2, masculinization rates of two different groups of larvaes immersed in 1800 µg MDHT/liter once in 10dpf and twice in 10 and 14dpf were 80.0 and 91.9 percent respectively. There were no significant differences in total body length and weight averages measured in biometry 2 between different groups but significant differences were observed in total body length only in biometry 3 (P〈0.05) where the highest values occurred in experiment 1 and control 1 groups and the lowest one in experiment 2. Significant differences observed in survival rate of different groups of larvaes in this experiment based on chi-square test (χ=15.165, P〈0.05) and the rates in experiment 1, control 2 and 3 groups (89.9, 86.4 and 89.9% respectively) were higher than those in experiment 2 and control 1 groups (82.0 and 82.3 respectively). In experiment 3, three different doses of anti-aromatse letrozole (200, 300 and 400 mg/k feed) were fed to different groups of 7 day post fertilization (dpf) larvaes for 45 days from the beginning of the experiment. The larvaes in 400 group .were all masculinized whereas the masculinization rates in 200 and 300 mg groups were 99.0 and 99.6% respectively. There were significant differences in total body length and weight averages measured in biometry 2 and 3 among groups in this experiment (P〈0.05) where the highest and the lowest values occurred in control 2 and experime2 groups respectively. Based on chi-square, the survival rate of different groups was significantly different (χ=41.119, P〈0.05) and the lowest rate occurred in experiment 2 group. No significant differences observed in gender ratios whithin all control groups in this study based on chi-square test. According to the findings aquired under the condition of brackish water at the present study, it would be potentially recommended to use MT and letrozole for the production of all male polpulations of Nile tilapia fish in order to provide fish farmers with no harmful environmental impacts on water sources in rivers and seas which occured due to the uncontroled breeding of tilapia. However, more research is needed to draw firm conclusions to use hormones and in especial anti-aromase letrozole because of the shortage of sufficient data in current references.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Masculinization ; Nile tilapia ; 17α-methyl testosterone ; Methyl di hydro testosterone ; Mestanolone ; Body weight gain ; Total body lenght ; Brackish water ; Male ; Oreochromis niloticus ; Hormones ; Temperature ; Salinity ; pH ; Dissolved oxygen ; Fertilization ; Survival rate ; Larvae ; Investigation
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 61pp.
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  • 54
    Publication Date: 2021-05-19
    Description: Biological characteristics of Liza klunzingeri were studied in two coastal areas, Sajaphi and Bahrekan, of eastern Khuzestan during March to February 2007. Among total 1880 measured fish specimens, 947 specimens were analyzed. The mean value of Gonado-somatic Index (GSI) for the male and female fish were calculated as 0.96± 1.39 and 3.25 ± 3.26 respectively. The GSI value was highest in November and lowest in July. The mean value of condition factor (K) was 1.25± 0.14 in male and 1.21± 0.15 for female. The highest K value were observed in June and the lowest value in February. The lenght at first maturity regardless of sexuality, was found to be 14.5 cm and the time of spawning based on reproduction pattern were determined in Nov- Dec. The length-weight relationship were calculated as Y=0.024L^2.76 (n=226R2=0.72) for males, Y=0.011L^3.00 (n=444R2= 0.78) for females and Y=0.0208L^2.82 (n=670R2 =0.82) for total fishes and also it’s found significant in level lengthweight relationship in (P〈0.05). According to biological characteristics and referring to American fisheries society (AFS) indices and Fuzzy logic expert system, Lize klunzingeri is classified as low vulnerable species.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Lize klunzinger ; Gonado-somatic Index ; GSI ; Condition factor ; Biological characteristics ; Female ; Male ; Specimens ; Fisheries
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 39pp.
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  • 55
    Publication Date: 2021-05-19
    Description: The most important habitats of mudskippers are muddy areas in tidal zone of tropical mangrove forests. Mudskippers are related to Oxudercinae subfamily of Gobiid fishes. Three most distributed species of Hormozgan mudskippers were Periophthalmus waltoni, Boleophthalmus dussumieri and Scartelaos tenuis. These fishes can be considered as euryhaline and eurythermal aquatic species, because they can tolerate a wide range of salinity and temperature. A research was done since september 2008 to september 2009 in two important mangrove regions of Hormuzgan (Tyab and Khamir) to determine some ecological characteristics of inhabited mudskipper species. Results showed that nitrate levels are significantly different between tidal lines and seasons (P〈0.05). Maximum nitrite concentrations were recorded 53.2 and 92.5 µg/l in Khamir and Tyab respectively. The annual correlation matrix showed that a positive correlation between phosphate concentration and nitrite and silicate (P〈0.05). Silicate concentration was very high, because of too low density of diatoms and radiolarians. Some species of diatoms, dinoflagellates, cyanobacteria and larvae of crustacea and echinoderms were observed with different density and diversity. Sediment composition of the studied areas were categorized in three classes (clay, sand and clay - sand). Polychaetes formed dominant group of benthic fauna in Tyab and Khamir areas. High density of capitellid worms was possibly related to some environmntal stress caused by activity of fishing and cargo vessels. It was not observed significant difference between fishes length in two areas (P〈0.05); Mean lengths of P. waltoni, B. dussumieri and S. tenuis were calculated 9.85, 14.7 and 11.5 cm respectively. Spawning period of each three species in both areas were obtained from late winter to late spring based on gonadosomatic index values. Male to female sex ratio of P. waltoni, B. dussumieri and S. tenuis were calculated 1:0.45, 1:0.41and 1:0.74 respectively. Absolute fecundity of P. waltoni, B. dussumieri and S. tenuis were estimated 3558 ± 2202, 3952 ± 1030 and 6742 ± 1939 respectively. P. waltoni feeds mainly on fiddler crab, S. tenuis uses crustaceans and gastropods and B. dussumieri has a vegetarian diet.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Mudskippers ; Ecology ; Periophthalmus waltoni ; Boleophthalmus dussumieri ; Scartelaos tenuis ; Female ; Male ; Benthic fauna
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 97pp.
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  • 56
    Publication Date: 2021-05-19
    Description: Aquaculture for human consuming species is being considered as the first substitution of catching aquatic species due to increase of human population and decrease of wild aquatic stocks. In this study, the hybrid sturgeon Bester (female beluga x male sterlet ) was produced for the first time in Iran. Sperm of 1.35 kg male Acipenser ruthenus was used to fertilize the eggs of 125 kg female Huso huso in Shahid Marjani Sturgeon propagation center (Agh Ghala, Golestan province). The fries of bester and control treatment of beluga were transported to International Sturgeon Research Institute (Rasht) after about one month by reaching to 490 mg and 377 mg of weight respectively. All fishes fed by artificial concentrated food (48-50% protein and 15-17% fat) after a period of feeding with Artemia and Daphnia. Sorting was carried out according to increase of fish weight for both fishes. Results showed that the imported sterlet spawners were not at the high maturation stages and especially the males had not suitable sperm quality. It showed that up to 2 months of age , these was no significant difference between bester and beluga weight but from this age up to 2 months of age the weight of beluga was greater. Meanwhile from 2 months old up to the end of the study (21 months) the weight of bester sample was significantly greater than beluga. The comparison of FCR for the whole rearing period showed no difference between bester and beluga (2.4 and 2.3 respectively). In general, the increase and decrease pattern of GR and SGR were coincided to each other, but showed monthly differences. Growth rate (GR) and specific growth rate (SGR) of bester were greater than beluga from 4th and 3rd month of rearing period respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Aquaculture ; Beluga ; Sterlet ; Bester ; Growth Rate ; Aquatic ; Species ; Population ; Female ; Male ; Acipenser ruthenus ; Huso huso ; Sturgeon ; Artemia
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 55pp.
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  • 57
    Publication Date: 2021-05-19
    Description: Sampling of Astacus leptodactylusc were conducted in order to determination of biometrical and biological parameters suchas length , weight , sex ratio , fecundity and natural reproduction time . Two transect were selected at 49 34 and 49 36 geographical position on east Caspian Sea near to Anzali city . Metalic foulding trap with Silurus glanis as attractive diet were used to catch Astacus leptodactylusc At each line the traps were set on depth of 35,45 ,55 and 65 (5 trap at each depth) . Random sampling from each depth on tow lin for one year were conducted and the biometry performed on catched Astacus leptodactylusc where their sext uality and their ration were detemined for eacd month , season and whole year. absolute fecundity determined by cooking Astacus leptodactylusc , taking out the ovary weighing and counting them .Working fecundity assesed by separating eggs from their swiming leges while enomerate all egg . Complete randomized test of ANOVA for analysing the data were employed. The results showed average length and welght were calculated 122/07±1/74mm and 57/96±1/81gr respectively. Average absolute fecundity was 310/22 ±10/72 eggs , average working fecundity was 251/84±8/84 eggs , Average ovary weight was determined 4/31 ±619 gr and average number of eggs in one gr was 74/52±1/53 eggs .The sextual ratio in all year long was 1:1.32 . The reproduction season is about seven month from Febrary to July and the moulting of males occures two times each year. One of time is at may and the other is in September . The female molt thtina as the male start for second time.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biometrical ; Biological ; Biology ; Astacus leptodactylus eichwaldi ; Sex ratio ; Fecundity ; Silurus glanis ; ANOVA ; Female ; Male ; Coastal water
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 78pp.
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  • 58
    Publication Date: 2021-05-19
    Description: Population dynamics parameters and exploitation ratio of Jinga Shrimp, Metapenaeus affinis were studied from Sep 2011 to Dec 2011 and data collected from two landing places (Hendijan and Lifee-Bosif). During the project, more than 2200 specimens of jinga shrimp were measured. The mean value of length for the male and female were calculated as 9.8±0.86, 10.24±1.18 and mean value of weight for the male and female was as 6.730±1.64, 8.14±2.90 respectively. The length-weight relation were calculated as TW=0.024TL2.24 (n=1084,R2=0.71) for males, TW=0.011TL2.80 (n=1081,R2= 0.81) for females also we found significant different level length-weight relation in P〈0.05. The growth parameters of von Bertalanffy equation were as, L∞: 14.73 and K: 1.1 and t0: -0.02. The estimated valve of total mortality, natural mortality, fishing mortality and exploitation ratio is Z: 4.35, M: 1.68, F: 2.67, E: 0.61 respectively. By using method analyses knife-edge selection, relative yield per recruitment (Y'/R) :0.014, relative biomass per recruitment, (B'/R) :0.085., Exploitation ratio maximum sustainable yield, Emax : 0.38; biological reference points for Jinga Shrimp stock was calculated. MSY and fmsy value was 600T and 46100day respectively. Result in this study showed exploitation ratio Jinga Shrimp stock is over fishing and decreases exploitation ratio proposed.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Biological ; Jinga Shrimp ; Population ; Dynamics ; Exploitation ; Tiger tooth Croaker ; Otolithes ruber ; Metapenaeus affinis ; Population ; Male ; Female ; Mortality ; Coastal waters
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 202pp.
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  • 59
    Publication Date: 2021-05-19
    Description: The present study was firstly conducted to study the rate of sexual maturity in Nereis diversicolor under suitable conditions of temperature and photoperiod. The second objective was to determine the potential of artificial breeding in these worms for mass culture. Nereis diversicolor worms were collected from the Anzali lagoon in 4000 sampling operations during the years 2004 to 2006 using Ekman grab with a surface area of 400 cm2. The water salinity, temperature and total organic matter (TOM) of sediments in the sampling region was recorded. The worms were maintained in 0.5 tons (1 x 1 m2) tanks containing clayey-muddy sediment to a height of 20 cm covered with 10 cm water (5 ‰) until they reached a weight of 200-300 mg. Sexual maturity in this species was attained at 4-6 ºC and spawning occurred at approximately 16 ºC. The first gametes were observed five weeks after the temperature increased from 6 to 16 ºC. Sexual maturity was studied at various salinities (0.5, 5, 12, and 15 ‰). Results indicate that these worms attained earlier sexual maturity at salinity of 15 ‰, compared to other salinities studied. No significant differences (P〉0.05) were observed between sexual maturity attained at 12 ‰ and 15 ‰. Stocking density (20, 50, 100, 150 worms) was studied in terms of sex and showed that number of females were higher than males and the ratio was 11:1 (female:male). No significant differences (P〉0.05) were observed between the various stocking densities and their replicates. The effect of light and photoperiod in synchronizing reproduction in male and female N. diversicolor was studied. It was evident that reproduction behavior in adult worms increased for a period of one week at the end of each month after they are exposed to a prolonged photoperiod (L:D=16:8) followed by a period of dim light (simulated using 1 W lamps). Feeding trials were carried out with Saccharomyces cerevisiae, formulated fish diets and humus. Results showed that this diet was effective in speeding up sexual maturity in worms and significant effect of treatment was observed (P〈0.05) in worms fed a diet of humus alone. Eggs and sperms were fertilized and worms developed from the young monotrochophore with jelly layer to the trochophore larvae.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Reproduction ; Sexual Maturity ; Fertilization ; Nereis Diversicolor ; Culture ; Salinity ; Temperature ; Spawning ; Female ; Male ; Larvae ; Sacchromyces cerevisiae ; Density
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 68pp.
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  • 60
    Publication Date: 2021-05-19
    Description: Infection with Ligula intestinalis was found to be the main cause of fish mortality in Satarkhan Dam of East Azerbaijan Province. Zooplanktons, fish, water and water birds were sampled and studied for infestation with the parasite. We randomly sampled 100 copepods, fixed them in Chloridric Acid 0.01% for 3-4 minute until tissue became soft and colored by Logol. After washing the sample with distilled water, the parasites were separated and identified prevalence of infection was sixteen (1% male and 15% female Cyclops).
    Description: Published
    Keywords: Ligula intestinalis ; Planktonic copepods ; Procercoid ; Mortality ; Zooplanktons ; Parasite ; Chloridric acid ; Tissue ; Male ; Female
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.151-154
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  • 61
    Publication Date: 2021-05-19
    Description: Sex ratio and length at maturity in the rock oyster, Saccostrea cucullata was studied in the Iranian shores of Oman Sea. Monthly sampling was conducted 10 stations within one year period (March 1996 to February 1997). Results indicated that sex ratio is 1:1. Among the first matured age groups, nearly 67 percent of the samples were male and 33 percent were female. With increasing size, the percentage of females were increased, indicating a protandric nature. More than 50 percent of the samples were matured when their length exceeded 36 mm. Smallest matured specimen had a length of 22 mm.
    Description: Published
    Keywords: Sex ratio ; Length ; Maturity ; Rock oyster ; Saccostrea cucullata ; Sampling ; Male ; Female ; Specimen
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.11-20
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  • 62
    Publication Date: 2021-05-19
    Description: To study infection of Three-Spined Stickleback, Gasterosteus aculeatus (L.), we sampled 530 specimens of the fish during November 2000 till October 2001 in Gomishan Lagoon, southeast of Caspian Sea. The fish were collected using beach seines with 3mm mesh size. The specimens were transferred to lab fresh or fixed in 10% formalin and examined by standard methods. Numbers of parasites for each male or female were recorded and intensity, frequency and prevalence of the parasite for each month and sex were calculated. Maximum infection occurred in late winter and early spring and the maximum number of parasites was 82, obtained from a female fish in early spring.
    Description: Published
    Keywords: Gasterosteus aculeatus ; Corynosoma strumosum ; Three -Spined Stickleback ; Prevalence ; Specimens ; Male ; Female ; Parasite
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.155-160
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  • 63
    Publication Date: 2021-05-19
    Description: Cultured nine years old breeder M. cephalus specimens were subjected to eight artificial breeding treatments from December till February 2003. In treatments 1-5, breeders received two injections of CPH and LHRH-A2 coupled with Domperidone or a mixture of CPH and HCG in an interval of 24 hours. Female breeders in treatments 6-8 received a gradual daily injection of 500 IU HCG per kilogram of body weight for 5 days. Male breeders in treatments 6-8 were given 5-10mg of MT-α-17 in addition to HCG and then subjected to two injections similar to that of treatments 1-5. Results showed that male breeders in stages +2 and +3 of all treatments that had received HCG produced more milt than those injected with MT-α-17, such that each male was used 2-6 times for milting purposes. Of 27 female breeders, 22 spawned 1-2.6 million eggs among which eight females' eggs were fertilized 10-95%. Hatching rate was between 0.008 to 88.9% and a maximum of 2 million larvae were produced. The best time for artificial breeding is December when mean egg width is ≥600 microns. Statistical analysis of egg width, hatching rate and larvae production showed a significant difference between treatments 1-5 and 6-8 (p〈0.05). This proved the supremacy of multiple injections including HCG for artificial breeding of Mugil cephalus.
    Description: Published
    Keywords: Mugil cephalus ; Artificial breeding ; Specimens ; Domperidone ; Female ; Male ; Eggs
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.181-196
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  • 64
    Publication Date: 2021-05-19
    Description: Bester, a hybrid sturgeon (Huso huso L. females ´ Acipenser ruthenus L. males), neither spermiate nor ovulate in the captivity. Thirteen-year-old adult male and female bester were injected with LH-RHa (0.1-0.3 mg/kg B.W.) intramuscularly and spawning status of the treated fish was checked 24-48 hours later. Additionally, changes in serum levels of DHP in both the responded and the non-responded individuals were monitored 0, 1, 3, 6, 9, 12, 24, 48 and 72 hours after treatment. Between 70-100 percent of the LR-RHa injected males individuals, and 11-40 percent of the females spawned 24-48 hours after the treatment; the rest did not respond to the injection. In the responded males, 3-9 hours after the treatment, serum levels of DHP increased; while in the females it occurred first after 12-24 hours. In contrast, during the same period, serum levels of DHP remained low in all non-responded individuals. The present study indicated that using 0.1-1.3 mg/kg B. W. of LH-RHa can induce oocyte maturation and ovulation in the females and spermiation in the males cultured bester. The results suggested additionally DHP as an appropriated steroid that could be used in the final maturation stage of the gonads.
    Description: Published
    Keywords: Huso huso L. ; Acipenser ruthenus L. ; Bester ; Oocyte maturation ; Ovulation ; Spermiation ; DHP ; LH-RHa ; Female ; Male
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.59-66
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  • 65
    Publication Date: 2021-05-19
    Description: The pharaoh cuttlefish (Sepia pharaonis) is the most aboundant species in the Persian Gulf and Oman Sea. The stock patterns of this species were studied concerning biological and morphological aspects. In addition to measuring the biological patterns, 20 quantitative factors were measured. The results of LSD test showed that tentacle organ is indicative factor which shows significant difference between male and female specimen of Bushehr and Balouchestan regions. Regarding to length and weight frequencies data the results indicated that males are always bigger than females and also, the cuttlefishes of the Gulf of Oman are bigger than Persian Gulf samples. The results of cluster analysis for both sexes showed that the cuttlefishes of both studied region belong to separate stocks. Taking into consideration the findings of present study including: (1) difference in spawning season, (2) results of dendrograms, (3) observed significant differences in one-way analysis of variance (ANOVA) for morphometric measurements, (4) differences in body length and weight, (5) as well as ecological variations of the Persian Gulf and "the pharaoh cuttlefishes of Bushehr and Oman Sea, have indicated that Balouchestan belong to two separate stocks.
    Description: Published
    Keywords: Biological ; Morphological ; Ecological ; Morphometric ; Sepia pharaonis ; Pharaoh cuttlefish ; Species ; LSD ; Tentacle organ ; Male ; Female ; Samples ; Cluster ; Spawning ; Dendrograms ; ANOVA
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.79-94
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  • 66
    Publication Date: 2021-05-19
    Description: The operations of this project commenced with the capture and tagging of four spawners in the spring of 2006 and 2007 in the Sepidrud River. Three male Acipenser persicus spawners and one male A. stellatus spawner were collected by beach seine (120 m long, 6 m high and mesh size of 10 and 15 cm) and waiting nets. Spawners were tagged with radio transmitters with a frequency between 150-151 MHz. These transmitters were used for the first time in Iran on fish. Signals were received using a radio receiver model WTI-1000 (Wildlife Track Inc.) with Yagi antennae and a Telex ProAir 1500 earphone. Tagged spawners were tracked from the land (along the river margin) and in water in motor boats. The aim of this study was to study the potential for migration and natural reproduction in sturgeons in the Sepidrud River. Water temperature during the study period varied between 12-26 ֯C in the first year and between 16-22 ֯C in the second year of the study. The A. stellatus spawner weighed 6 kg while the A. persicus spawners weighed between 11 to 25 kg. Sperm motility of A. stellatus spawner was 39%, sperm density was 0.42x109 ml and motility time was 15 sec., while in A. persicus spawners, sperm motility varied between 50-65%, sperm density was between 0.500x109 to 0.865x109 ml and motility time of sperms varied between 20-42 sec. Tracking tagged spawners revealed that A. stellatus spawners moved at an average speed of 1100 m h-1 (influenced by the strong currents in the river) while A. persicus spawners moved downstream at an average speed of 90 m h-1. Results of the present study indicate the presence of potential barriers such as water temperature, river water flow, physiological conditions of spawners in terms of sexual maturity, and the presence of fishers and fishing gear, for the migration of sturgeon spawners in the Sepidrud River. However the spawners were able to escape the various fishing gear set up in the Sepidrud River and return to the sea, indicating the possibility of natural reproduction in this river.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Physiological ; Radio transmitters ; Migration ; Sturgeons ; Spawners ; Male ; Acipenser persicus ; A. stellatus ; Temperature ; A. persicus ; Sperm ; Motility ; Sexual maturity
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 60pp.
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  • 67
    Publication Date: 2021-05-19
    Description: The Kutum, Rutilus frisii kutum, is one of the most important bony fishes in Iranian coastal of Caspian Sea. Its harvest range is between 9000-10000 tons in a year, nearly 60% of the income of Bony fish fishery produced by kutum fishery. The stock of this species reduced drastically in 1982 and the catch slumped to the less than 250 tons in a year. Kutum spawning grounds deterioration, illegal catch, lack of restocking program were the main cause of the decline. This Spices in nature comprised by two distinct form, autumn and spring form. It is worth to be mentioned, by the effect of Caspian Sea Bony fishes Research Center s experts in 1983, artificial spawning and releasing the fries to the sea were commenced and the catch steadily improved. But all activities concerning restocking of kutum concentrated in spring form, as at present about 260 million its fries are released into sea for restocking by Iranian Fisheries Organization, but for above reasons and lack of restocking program, the populations of autumn form gravely shrinked and neared to be extinct. Therefore, to enhance the biodiversity and boost fishers livelihood of kutum in Caspian Sea this project implemented by cooperation of Iranian Fisheries Organization (IFRO) and Caspian Environment Program (CEP) in Aquaculture Institute (Inland Waters). In this project, brooders caught from Anzali lagoon and maintained in two different condition, include of floating cages in Anzali lagoon and earthen ponds in Sefidrud Fisheries Research Station. The results showed that there weren t significant differences between two maintenance statuses in maturation period and other reproductive characteristics of brooders. The ratio of male to female was 1 to 1.4. Minimum and maximum weight measured 1450 to 3100 g (with average of 1850 g) in female and 670 to 1900 g (with average of 1165 g) in male, respectively. The first natural spawning of brooders occurred in the end of January in temperature of 8 till 10 °C in concrete ponds. Also, some of maintained brooders in earthen ponds spawned in February. The average number of absolute, function and relative fecundity determined 88565 16809, 73805 14008 and 48670 12056, respectively. For artificial spawning, male and female brooders injected by pituitary gland with dose of 2-3 and 4-5 mg/kg body weight, respectively. Approximately, 10 and 8 present of female were over-ripe and immature in March (artificial spawning time), respectively. More than 59 % of injected female brooders induced to spawning in first stage after 10-12 hours and 13 % of them in twice stage and 7-8 hours after first stage. And also, 27.6% of females didn’t positive response to injection. Dry method used for eggs fecundity and incubation period lasted 7- 10 days in 14-16 °C. In totally, eggs fertilization were more than 95% and the average of eggs fertilization percent in throughout of period measured more than 92.7 6 %. Eyed eggs appearance occurred 3 days after fecundity and its mean was 92.7 15.1%. Larvae after yolk sac absorption feed with dry milk for 4-5 days and then introduced into fertilized earthen ponds (500 m2 and equipped to aerators) in intensive condition and fed with micro pellet food for 3-4 month. In finally, more than 1.8 millions fries of 1-2 g and some more than 5 g produced and released into Anzali lagoon to its restocking for first time. It is expected that continuing of restocking process of autumn form kutum by Iranian Fisheries Organization eventuate to population increasing of this form in Caspian Sea in future.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Artificial propagation ; Culture ; Rutilus frisii kutum ; Kutum ; Bony Fish ; Fishery ; Spawning ; Biodiversity ; Aquaculture ; Brooders ; Fecundity ; Male ; Female ; Population
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 79pp.
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  • 68
    Publication Date: 2021-05-19
    Description: Due to the usefulness of shrimp broodstock pelleted diets, from aspects of, easier maintenance, transportation, broodstock feeding, and cheaper as compared to natural wet diets, the use of natural wet foods, include sand worm (Perinereis nuntica), cattle fish )Sepia pharaonis) and veal livier decreased and the quantity of pelleted diet increased. Survey was conducted, in tankes with a volume of 300 liters. Tanks were filled with 150 liters of water. 10 broodstock in each tank was left, with an average weight of 37±2 grams. Daily feeding rate, was twenty-five percent of their biomass. The survey was include, 9 treatments with 3 replicates in each tank as described below. Control treatment: broodstock feeding only with, sand worm (33%), cattle fish (34%) and bull livier (33%). Exprimental treatment 1: broodstock feeding with pelleted diet contain 50 percent crude protein and 8 percent crude fat (50%)+sand worm (16 %)+cattle fish (18%)+veal livier (16%). Treatment 2: broodstock feeding with pelleted diet contain 50 percent crude protein and 10 percent crude fat (50 %)+sand worm (16 %)+cattle fish (18%) and veal livier (16%). Treatment 3: broodstock feeding with pelleted diet contain 40 percent crude protein and 10 percent crude fat (50%)+sand worm (16 %)+cattle fish (18 %) and veal livier (16 %). Treatment 4: broodstock feeding with pelleted diet contain 40 percent crude protein and 8 percent crude fat (50 %)+sand worm (16 %)+cattle fish (18 %) and veal livier (16 %). Treatment 5: broodstock feeding with pelleted diet contain 50 percent crude protein and 10 percent crude fat (100 %). Treatment 6: broodstock feeding with pelleted diet contain 50 percent crude protein and 8 percent crude fat (100 %). Treatment 7: broodstock feeding with pelleted diet contain 40 percent crude protein and 10 percent crude fat (100 %). Treatment 8: broodstock feeding with pelleted diet contain 40 percent crude protein and 8 percent crude fat (100%). The results showed that, Gonadosomatic index (GSI) in treatments 3: control and 6, was significantly more than others treatments (p〈0.05). Hepatosomatic indexes, in often treatments was almost equal, and in some cases were significantly different (p〈0.05). In treatments 3 and control, absolute fequndity, was significantly more than others treatment (p〈0.05). The survival percent, in treatment 8 was significantly less than others treatments (p〈0.05). The survival percent in others treatments was not significantly difference (p〉0.05). From the aspect of mean weight of broodstock, wasn’t significant difference in treatments (p〉0.05). From the aspect of mean length of carapac, wasn’t significant difference in treatments (p〉0.05). From the aspect of mean body length, wasn’t significant difference in often treatments (p〉0.05), and in treatments 5 and 6 was significantly less than others (p〈0.05). In the determination of relasheship between kind of treatments and abundance of maturated broodsock, wasn’t significantly difference (p〉0.05). In the determination of, correlation between weight (g) and total length(cm), (r=0.71), weight and carapace length (cm) (r=0.70), the correlation was strong. Between GSI, HIS, carapace length and total length the correlation was intermediate (r=0.54). The correlation between absolutely fecundity and total length (r=0.20), absolutely fecundity and carapace length (r=0.28), absolutely fecundity and weight (r=0.35) was weak. The results showed that, the use of combination of pelleted diet and natural wet diets can increase female maturation indexes. Totally we can noted that, GSI, HIS and absolute fecundity of broodstock, that fed with pelleted diet contain 40 percent crude protein and 10 percent crude fat (50 %)+sand worm (16 %)+cattle fish (18 %) and veal livier (16 %) (treatment 3) was better than the other treatments. Positive effects of this treatnent on sexual indexes, was due to provide part of nutritional requirement of shrimp broodstock from pelleted diet.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Natural wet diet ; Pelleted diets ; Maturation ; Male ; Female ; Western white shrimp ; Artifitial diets ; Broodstock ; Litopenaeus vannamei
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 38pp.
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  • 69
    Publication Date: 2021-05-19
    Description: The goal of this study was to find a sex-specific DNA sequences in the male and female genomes of beluga (Huso huso), by random amplified polymorphic DNA (RAPD) assays performed on pooled DNA samples. Of the 310 different primers was tested, 7 primers produced no band. The most likely possibility is that PCR conditions have not been suitable for these 7 primers. It is also possible that these RAPD primers did not find suitable binding position to generate fragments. A single band was produced by primer 295 (OPT -17) which was specific to the male DNA. Further analysis of individual male and female beluga demonstrated that this primer yeilded a product that were in fact variable and reproducible, but were the result of variation in some individual males and females and not male-specific. Therefore, of the 4146 RAPDs scored, none were tightly linked to a sex-determining gene. The results support the idea that sex chromosomes are either not present or they weakly differentiated in the genome of beluga.
    Description: Published
    Keywords: Beluga ; Huso huso ; Acipenseridae ; RAPD ; Sex marker ; DNA ; Male ; Female ; Samples ; Genome
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.149-162
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  • 70
    Publication Date: 2021-05-19
    Description: The research project was implemented to obtain bio-normative of artificial spawning of Esox lucius and rear fries until fingerling size in earthen ponds. The artificial spawning occured in 4 stages, totally 96 brooders (32 females and 64 males) were used for the experiments. The pituitary gland hormone of common carp was injected at 4-7 mg per kg of body weight in each dose to the spawner females. The water temperature during spawning was 8-150C and the time of artificial spawning started from 4 of February to 20 of March. The maximum weight of brooder was 4 kg and the minimum 0.75 kg; the oldest female fish brooder was 6 years old and the male 5 years; the minimum age for both sexes was three years. The spawning took place both by natural state in earthen ponds and also by eggs extraction and fertilization. The quantity of eggs extracted from female spawner composed between 10-20 percent of the body weight. There was no significant differences between one and two step hormone injections. The injected female brooder was ready for artificial spawning 48-74 hours later. Mean incubation period lasted 120 degree days and yolk sac absorption lasted 160-180 degree days. The eggs stickiness was rather high and the rate of fertilization fluctuated between 45-85%. One gram dry eggs contain 90-150 ovum with 1.5-2 mm diameter, and swelled eggs were 70-85 pieces with 2.5-3.5 mm diameter. Absolute, relative and working fecundity calculated 22400-112000, 19760-36920and 5200-67400 eggs respectively. Larvae feeding, after yolk sac absorption, was performed with a solution of dry milk and soya bean juice. The feeding first was conducted with soya bean juice and Artemia nauplius in earthen ponds. After wards the natural productions of the pond, having been enriched with chicken manure, were used. The survival rate, from larvae to fingerling size, was 20-22% during 50 days culture period. During this time the fly grew to 7.4 gr with 8.5 cm length, in average.
    Description: Published
    Keywords: Spawning ; Esox lucius ; Pike ; Fingerling ; Size ; Fish ; Bio - normative ; Brooders ; Pituitary gland ; Hormone ; Carp ; Temperature ; Weight ; Female ; Male ; Sex ; Eggs ; Fertilization ; Fecundity ; Artemia nauplius
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.49-58
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  • 71
    Publication Date: 2021-05-19
    Description: Penaeus merguiensis is the dominant species in coastal waters of Hormozgan province and approximately constitute 70% of the annual catch composition. Sex rate is analysis in natural population shows that the proportion of males to females is 1:1 and generally this proportion in carapace length is 28.6 and 25.7 mm more than other classes, which its peak is observed in 25.7 mm length class. Also proportion of males to females in May to December and April to May is more than other times which its peak is in December. The analysis of sexual maturation based on carapace length shows that LM50 for females of this species has followed the exponential equation and is equal to 32.8 mm (r2 = 90%). Minimum and maximum of absolute fecundity of this species with 20.7-31.5 mm C.L. are and 11300 and 14400 eggs respectively. This analysis of relative fecundity of this type showed that the relationship between carapace length and number of eggs was a type of poweral equation (F= 0.1208 C.L 3.8, r2 = 97%), however this relationship between total length (T.L) and wet weight (W) was F = 0.0002 T.L 7.1 (r 2= 0.68) and F= 0.1942 W 4.02 (r2=0.58), respectively, which showed the fecundity has 0.1942 W (r more correlation with the carapace length.
    Description: Published
    Keywords: Biology ; Penaeus merguiensis ; Banana Prawn ; Fecundity ; Species ; Sex rate ; Male ; Female ; Carapace ; Sexual maturation ; Length
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.71-85
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  • 72
    Publication Date: 2021-05-19
    Description: Six male lobster and six female lobsters weighing 250-300 gr were studied. The salinity of the water ranged between 37±0.1ppt and 12±0.1 ppt at the beginning and the end of the experiment respectively. During the study period, lasting for 36 days, temperature, pH and dissolved oxygen were kept almost at the same level. At salinity of 25 ppt some swelling and decrease in desire for food and in movement were observed. The first cases of mortality occured at salinity of 16 ppt and finally fix three remaining male lobsters perished at salinity of 12 ppt. Generally, under the above mentioned conditions, the male lobster: exhibited better reactions and endurance than the females.
    Description: Published
    Keywords: Salinity ; Lobster ; Male ; Female ; Temperature ; pH ; Dissolved oxygen ; Swelling ; Mortality
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.59-68
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  • 73
    Publication Date: 2021-05-19
    Description: Conservation of genetic diversity of juveniles used for restocking of natural populations requires serious attention in artificial breeding protocol of the Caspian brown trout Salmo trutta caspius. Unbalanced contribution of male and female breeders to progeny in present artificial breeding has resulted in the reduction of effective population size in breeders. Equalization of milt volume did not also result in balanced contribution of breeders. With regard to the possible effect of sperm concentration on contribution of breeders to production of progeny, effective population size in breeders and genetic diversity of progeny were determined in mixed milt fertilization of 6 male and 2 female breeders with equal sperm concentration and ova number. Parentage assignment was performed using exclusion method in FAP program by analyzing 9 microsatellite loci and choosing the 3 most polymorphic ones, Str 58, Str 73 and Str 591, in breeders. More than 91% of progeny were assigned to their parents. Effective population size was calculated as 5.24 (0.65) and the number of alleles and expected heterozygosity decreased in progeny (6.67 and 0.726 ± 0.011) compared to parents (7.33 and 0.808) significantly (P〉0.05). In conclusion, equalization of sperm concentration of male breeders did not result in the balanced contribution of male breeders to ova fertilization and production of progeny in mixed milt fertilization of Caspian brown trout and genetic diversity of progeny remained significantly decreased.
    Description: Published
    Keywords: Equalization ; Sperm ; Concentration ; Male ; Salmo trutta caspius ; Fertilization ; Genetic ; Diversity ; Progeny
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.45-57
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  • 74
    Publication Date: 2021-05-19
    Description: The crude protein content and amino acid compositions of muscle from wild and cultured of male and female Acanthopagrus latus were determined by HPLC. There were quantitative differences between individual amino acids in the tissues investigated, depending on the sex and location. It was noted that, among all the samples studied in tissues, sexes and locations, lysine and isoleucine were the principal essential amino acid (EAA) and glutamic acid was mainly for non-essential amino acid (NEAA). Lysine and isoleucine of male muscles had a significantly higher (P〈0.05) amount than female muscles. The crude protein content in male and female muscles was not found to be significantly different. Depending on location, the percentages of arginine, leucine, isoleucine, lysine, serine, glycine, alanine and tyrosine were significantly different (P〈0.05) in muscles of wild and cultured fish. The wild seabream possessed considerably higher protein content than cultured seabream muscle. The results showed that wild male fish muscle contained a higher (P〉0.05) level of EAA than other groups. The results indicate that the Acanthopagrus latus is a healthful component of the human diet.
    Description: Published
    Keywords: Amino acid ; Composition ; Muscle ; Male ; Female ; Acanthopagrus latus ; NEAA ; Protein
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.58-66
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  • 75
    Publication Date: 2021-05-19
    Description: According to a survey in 1996, among three species of kilka, living in the South-West of Caspian Sea, anchovy-like kilka composes 90.3% of total kilka catch. In all seasons of a year, anchovy-like kilka, in the second stage of gonadal maturation, shows higher abundance in the catch, compared with other maturation stages. This indicates anchovy-like kilka shows more positive phototaxis, at the beginning of its sexual maturation. Sex ratio shows females dominancy is 54.8-60, 7-75.9 and 82 percent in spring, summer, autumn and winter respectively. The average length of this fish in the four seasons with above order were 98.6±10.8, 97.7±10.3, 99.6±10.6, 100.1 ± 10.6 and the mean weight were 8.24±1.1, 7.5±1.7, 7.3±1.96 and 6.9±1.56 gr. The age composition of anchovy caught on spring in 1997 ranged between 2-5 years old and the dominate group was 3-year-old. The K value and infinite length calculated 0.27 and 147.8 mm respectively. No significant differences were observed between male and female concerning fat reserve and feeding intensity.
    Description: Published
    Keywords: Biological ; Survey ; Clupeonella engrauliformis ; Species ; Gonadal maturation ; Sexual maturation ; Sex ratio ; Anchovy ; Male ; Female ; Feeding ; Intensity ; Anchovy Kilka
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.59-70
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  • 76
    Publication Date: 2021-05-19
    Description: Food habits and spawning season of Acanthopagrus latus (Sparidae) were studied in Bushehr, Delvar and Rostami waters of the Persian Gulf. Samples have been collected from March 1996 to February 1997 on a monthly basis. A total of 87 males and 95 females were examined and different biological parameters were measured. The Relative Length of the Gut (RLG) was estimated to be 0.64, which indicates that this is a carnivorous species. Food items have also been identified using numerical method. Out of 159 stomachs studied 36.36% were found to contain crabs, 33.99% other fish and 13.43% shrimps. The content of snails and sea urchins were 11/46% and 4/ 76% respectively. It is evident from the results of the study that A. latus feeds mainly on crabs and fish. The vacuity index was calculated to be 0.13. This indicated that this fish is an active predator. The Gonado Somatic Index (GSI) was estimated to be highest during February - March and lowest in June. GSI maxima was coincided with fecundity peak. The relationship between (GSI) and fish weight for females and males were r2=0.0235 and r2 =0.0214 respectively.
    Description: Published
    Keywords: Biological ; Food Habits ; Spawning ; Acanthopagrus latus ; Sparidae ; Samples ; Male ; Female ; Length ; Gut ; RLG ; Species ; Numerical method ; Fish ; Shrimp ; Snail ; Sea urchins ; A. latus ; Feed ; Crab ; Vacuity index ; Gonado Somatic Index ; GSI
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.13-21
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  • 77
    Publication Date: 2021-05-19
    Description: Lanternfish (Benthosema pterptum) is one of the most important fish species in the Oman Sea. We randomly sampled 300 myctophids from different depths in spring and winter 2009 in the Oman Sea using mid-water trawls. Male to female sex ratio was 0.36:0.64. The thin sections (60-80µm) of sagitta otoliths of the fish were prepared using polishing method. These sections showed that increment growth rings of lanternfish otolith are formed daily and the age condition is distinguishable on a daily basis. We found the life span of the species to be short (with a maximum of 349 micro-increments counted) and probably less than a year. The relationship between standard length (SL) and daily growth increment (D) was expressed as the linear equation: SL=0.87D+12.37 (R 2=0.97). The relationship between lanternfish weight (W) and daily growth increment (D) was expressed as power equation: W=0.00003D1.754 (R2=0.95). Furthermore, morphometrical characteristics of otolith including otolith weight and length and daily growth increment relationships were expressed as linear equation (R2=0.96 and R 2=0.83). The results showed that lanternfish growth rate were in the range 0.241mm/d-1 to 0.138mm/d-1 and decreased by body size and age in this range.
    Description: Published
    Keywords: Pattern ; Daily ; Lanternfish ; Growth ; Otolith ; Morphometric ; Female ; Male ; Sex
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.147-160
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  • 78
    Publication Date: 2021-05-19
    Description: In this study we investigated biometric and morphometric traits of Capoeta buhsei in Gharachay River, Saveh. Sampling was in 5/90, 11/90 and 8/91. Sampling was by electroshoker. Samples after catching transferred to Azad university of Babols labratoar and investigated. Measurement of length was recorded by digital caliper to the nearest 0/01 mm and weight was recorded by digital balance to the nearest 0/01 g .Age determination was by observing scales in benicular loop with 40..Results of investigation of 53 male and 39 female of this species indicated that mean standard length of male and female was 131/46±23/59 mm and 152/96±25/07 mm respectively. Ratio of female to male was 0/73 :1 and with x2 -test there wasn’t a meaningful relashionship between male and female ratio.
    Description: Published
    Keywords: Capoeta buhsei ; Investigation ; Biological ; Characteristics ; Female ; Male ; Length ; Weight
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.257-262
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  • 79
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    Unknown
    Tehran University, Kish International Campus | Kish Island, Iran
    Publication Date: 2021-05-19
    Description: Unpublished
    Keywords: Cheilinus lunulatus ; Fish ; Male ; Female ; Wrass ; Broomtail wrass
    Repository Name: AquaDocs
    Type: Images/Video , Non Refereed
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  • 80
    facet.materialart.
    Unknown
    Tehran University, Kish International Campus | Kish Island, Iran
    Publication Date: 2021-05-19
    Description: Unpublished
    Keywords: Ostracion cyanurus ; Boxfish ; Fish ; Adult ; Male ; Female ; Coral reef
    Repository Name: AquaDocs
    Type: Images/Video , Non Refereed
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  • 81
    facet.materialart.
    Unknown
    Tehran University, Kish International Campus | Kish Island, Iran
    Publication Date: 2021-05-19
    Description: Unpublished
    Keywords: Blenniella periophthalmus ; Fish ; Adult ; Coral reef ; Blenny ; Male ; Female
    Repository Name: AquaDocs
    Type: Images/Video , Non Refereed
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  • 82
    Publication Date: 2016-01-20
    Description: The final identity and functional properties of a neuron are specified by terminal differentiation genes, which are controlled by specific motifs in compact regulatory regions. To determine how these sequences integrate inputs from transcription factors that specify cell types, we compared the regulatory mechanism of Drosophila Rhodopsin genes that are expressed in subsets of photoreceptors to that of phototransduction genes that are expressed broadly, in all photoreceptors. Both sets of genes share an 11-base pair (bp) activator motif. Broadly expressed genes contain a palindromic version that mediates expression in all photoreceptors. In contrast, each Rhodopsin exhibits characteristic single-bp substitutions that break the symmetry of the palindrome and generate activator or repressor motifs critical for restricting expression to photoreceptor subsets. Sensory neuron subtypes can therefore evolve through single-bp changes in short regulatory motifs, allowing the discrimination of a wide spectrum of stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rister, Jens -- Razzaq, Ansa -- Boodram, Pamela -- Desai, Nisha -- Tsanis, Cleopatra -- Chen, Hongtao -- Jukam, David -- Desplan, Claude -- K99EY023995/EY/NEI NIH HHS/ -- R01 EY13010/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1258-61. doi: 10.1126/science.aab3417.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Developmental Genetics, Department of Biology, New York University, 100 Washington Square East, New York, NY 10003-6688, USA. ; Center for Developmental Genetics, Department of Biology, New York University, 100 Washington Square East, New York, NY 10003-6688, USA. cd38@nyu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785491" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Pairing ; Drosophila Proteins/*genetics ; Drosophila melanogaster/genetics/growth & development ; *Gene Expression Regulation, Developmental ; Mutation ; Photoreceptor Cells, Invertebrate/*physiology ; Promoter Regions, Genetic/*genetics ; Rhodopsin/*genetics ; Transcription Factors/metabolism ; Vision, Ocular/*genetics
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  • 83
    Publication Date: 2016-01-20
    Description: Congenital heart disease (CHD) patients have an increased prevalence of extracardiac congenital anomalies (CAs) and risk of neurodevelopmental disabilities (NDDs). Exome sequencing of 1213 CHD parent-offspring trios identified an excess of protein-damaging de novo mutations, especially in genes highly expressed in the developing heart and brain. These mutations accounted for 20% of patients with CHD, NDD, and CA but only 2% of patients with isolated CHD. Mutations altered genes involved in morphogenesis, chromatin modification, and transcriptional regulation, including multiple mutations in RBFOX2, a regulator of mRNA splicing. Genes mutated in other cohorts examined for NDD were enriched in CHD cases, particularly those with coexisting NDD. These findings reveal shared genetic contributions to CHD, NDD, and CA and provide opportunities for improved prognostic assessment and early therapeutic intervention in CHD patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Homsy, Jason -- Zaidi, Samir -- Shen, Yufeng -- Ware, James S -- Samocha, Kaitlin E -- Karczewski, Konrad J -- DePalma, Steven R -- McKean, David -- Wakimoto, Hiroko -- Gorham, Josh -- Jin, Sheng Chih -- Deanfield, John -- Giardini, Alessandro -- Porter, George A Jr -- Kim, Richard -- Bilguvar, Kaya -- Lopez-Giraldez, Francesc -- Tikhonova, Irina -- Mane, Shrikant -- Romano-Adesman, Angela -- Qi, Hongjian -- Vardarajan, Badri -- Ma, Lijiang -- Daly, Mark -- Roberts, Amy E -- Russell, Mark W -- Mital, Seema -- Newburger, Jane W -- Gaynor, J William -- Breitbart, Roger E -- Iossifov, Ivan -- Ronemus, Michael -- Sanders, Stephan J -- Kaltman, Jonathan R -- Seidman, Jonathan G -- Brueckner, Martina -- Gelb, Bruce D -- Goldmuntz, Elizabeth -- Lifton, Richard P -- Seidman, Christine E -- Chung, Wendy K -- T32 HL007208/HL/NHLBI NIH HHS/ -- Arthritis Research UK/United Kingdom -- British Heart Foundation/United Kingdom -- Department of Health/United Kingdom -- Howard Hughes Medical Institute/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1262-6. doi: 10.1126/science.aac9396.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA, USA. Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA. ; Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. ; Departments of Systems Biology and Biomedical Informatics, Columbia University Medical Center, New York, NY, USA. ; Department of Genetics, Harvard Medical School, Boston, MA, USA. NIHR Cardiovascular Biomedical Research Unit at Royal Brompton & Harefield NHS Foundation and Trust and Imperial College London, London, UK. National Heart & Lung Institute, Imperial College London, London, UK. ; Department of Genetics, Harvard Medical School, Boston, MA, USA. Analytical and Translational Genetics Unit, Massachusetts General Hospital and Harvard Medical School, Boston MA, USA. ; Department of Genetics, Harvard Medical School, Boston, MA, USA. Howard Hughes Medical Institute, Harvard University, Boston, MA, USA. ; Department of Genetics, Harvard Medical School, Boston, MA, USA. ; Department of Cardiology, University College London and Great Ormond Street Hospital, London, UK. ; Department of Pediatrics, University of Rochester Medical Center, The School of Medicine and Dentistry, Rochester, NY, USA. ; Section of Cardiothoracic Surgery, University of Southern California Keck School of Medicine, Los Angeles, CA, USA. ; Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. Yale Center for Genome Analysis, Yale University, New Haven, CT, USA. ; Yale Center for Genome Analysis, Yale University, New Haven, CT, USA. ; Steven and Alexandra Cohen Children's Medical Center of New York, New Hyde Park, NY, USA. ; Departments of Systems Biology and Biomedical Informatics, Columbia University Medical Center, New York, NY, USA. Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA. ; Department of Neurology, Columbia University Medical Center, New York, NY, USA. ; Department of Pediatrics, Columbia University Medical Center, New York, NY, USA. ; Department of Cardiology, Children's Hospital Boston, Boston, MA, USA. ; Division of Pediatric Cardiology, University of Michigan, Ann Arbor, MI, USA. ; Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada. ; Department of Cardiology, Boston Children's Hospital, Boston, MA, USA. ; Department of Pediatric Cardiac Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA, USA. ; Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA. ; Department of Psychiatry, University of California San Francisco, San Francisco, CA, USA. ; Heart Development and Structural Diseases Branch, Division of Cardiovascular Sciences, NHLBI/NIH, Bethesda, MD, USA. ; Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. bruce.gelb@mssm.edu goldmuntz@email.chop.edu martina.brueckner@yale.edu richard.lifton@yale.edu cseidman@genetics.med.harvard.edu wkc15@cumc.columbia.edu. ; Mindich Child Health and Development Institute and Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA. bruce.gelb@mssm.edu goldmuntz@email.chop.edu martina.brueckner@yale.edu richard.lifton@yale.edu cseidman@genetics.med.harvard.edu wkc15@cumc.columbia.edu. ; Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA. bruce.gelb@mssm.edu goldmuntz@email.chop.edu martina.brueckner@yale.edu richard.lifton@yale.edu cseidman@genetics.med.harvard.edu wkc15@cumc.columbia.edu. ; Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. Howard Hughes Medical Institute, Yale University, New Haven, CT, USA. bruce.gelb@mssm.edu goldmuntz@email.chop.edu martina.brueckner@yale.edu richard.lifton@yale.edu cseidman@genetics.med.harvard.edu wkc15@cumc.columbia.edu. ; Department of Genetics, Harvard Medical School, Boston, MA, USA. Howard Hughes Medical Institute, Harvard University, Boston, MA, USA. Cardiovascular Division, Brigham & Women's Hospital, Harvard University, Boston, MA, USA. bruce.gelb@mssm.edu goldmuntz@email.chop.edu martina.brueckner@yale.edu richard.lifton@yale.edu cseidman@genetics.med.harvard.edu wkc15@cumc.columbia.edu. ; Departments of Pediatrics and Medicine, Columbia University Medical Center, New York, NY, USA. bruce.gelb@mssm.edu goldmuntz@email.chop.edu martina.brueckner@yale.edu richard.lifton@yale.edu cseidman@genetics.med.harvard.edu wkc15@cumc.columbia.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785492" target="_blank"〉PubMed〈/a〉
    Keywords: Brain/abnormalities/metabolism ; Child ; Congenital Abnormalities/genetics ; Exome/genetics ; Heart Defects, Congenital/*diagnosis/*genetics ; Humans ; Mutation ; Nervous System Malformations/*genetics ; Neurogenesis/*genetics ; Prognosis ; RNA Splicing/genetics ; RNA, Messenger/genetics ; RNA-Binding Proteins/genetics ; Repressor Proteins/genetics ; Transcription, Genetic
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  • 84
    Publication Date: 2016-01-20
    Description: Mitochondrial morphology is shaped by fusion and division of their membranes. Here, we found that adult myocardial function depends on balanced mitochondrial fusion and fission, maintained by processing of the dynamin-like guanosine triphosphatase OPA1 by the mitochondrial peptidases YME1L and OMA1. Cardiac-specific ablation of Yme1l in mice activated OMA1 and accelerated OPA1 proteolysis, which triggered mitochondrial fragmentation and altered cardiac metabolism. This caused dilated cardiomyopathy and heart failure. Cardiac function and mitochondrial morphology were rescued by Oma1 deletion, which prevented OPA1 cleavage. Feeding mice a high-fat diet or ablating Yme1l in skeletal muscle restored cardiac metabolism and preserved heart function without suppressing mitochondrial fragmentation. Thus, unprocessed OPA1 is sufficient to maintain heart function, OMA1 is a critical regulator of cardiomyocyte survival, and mitochondrial morphology and cardiac metabolism are intimately linked.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wai, Timothy -- Garcia-Prieto, Jaime -- Baker, Michael J -- Merkwirth, Carsten -- Benit, Paule -- Rustin, Pierre -- Ruperez, Francisco Javier -- Barbas, Coral -- Ibanez, Borja -- Langer, Thomas -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):aad0116. doi: 10.1126/science.aad0116.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genetics, University of Cologne, 50674 Cologne, Germany. Max-Planck-Institute for Biology of Aging, Cologne, Germany. ; Myocardial Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain. ; Institute for Genetics, University of Cologne, 50674 Cologne, Germany. ; INSERM UMR 1141, Hopital Robert Debre, Paris, France. Universite Paris 7, Faculte de Medecine Denis Diderot, Paris, France. ; Centre for Metabolomics and Bioanalysis (CEMBIO), Faculty of Pharmacy, Universidad San Pablo CEU, Campus Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain. ; Myocardial Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain. Department of Cardiology, Instituto de Investigacion Sanitaria (IIS), Fundacion Jimenez Diaz Hospital, Madrid, Spain. thomas.langer@uni-koeln.de bibanez@cnic.es. ; Institute for Genetics, University of Cologne, 50674 Cologne, Germany. Max-Planck-Institute for Biology of Aging, Cologne, Germany. Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany. Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany. thomas.langer@uni-koeln.de bibanez@cnic.es.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785494" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cardiomyopathy, Dilated/genetics/metabolism/pathology ; Diet, High-Fat ; Embryonic Development ; Female ; GTP Phosphohydrolases ; Gene Deletion ; Heart/embryology ; Heart Failure/genetics/*metabolism/pathology ; Male ; Metalloendopeptidases/genetics ; Metalloproteases/genetics/metabolism ; Mice ; Mice, Knockout ; Mitochondria, Heart/*metabolism/ultrastructure ; *Mitochondrial Degradation ; *Mitochondrial Dynamics ; Mitochondrial Proteins/genetics/metabolism ; Muscle, Skeletal/enzymology ; Myocardium/*metabolism/pathology ; Myocytes, Cardiac/enzymology/pathology ; Proteolysis
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  • 85
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alexandrov, Ludmil B -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1175. doi: 10.1126/science.aad7363.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Theoretical Biology and Biophysics (T-6), Los Alamos National Laboratory, Los Alamos, NM 87545, USA. lba@lanl.gov.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785464" target="_blank"〉PubMed〈/a〉
    Keywords: *Computer Simulation ; DNA Mutational Analysis ; Genomics/*methods ; Humans ; *Models, Genetic ; *Mutagenesis ; Mutation ; Neoplasms/classification/*genetics/pathology
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  • 86
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Jon -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1186-7. doi: 10.1126/science.350.6265.1186.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785474" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/genetics/physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Caloric Restriction ; Death ; Humans ; Hydra/genetics/physiology ; Longevity/genetics/*physiology ; Mice ; Mutation ; Phosphatidylinositol 3-Kinases/genetics/physiology
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  • 87
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: Research into stem cells and aging aims to understand how stem cells maintain tissue health, what mechanisms ultimately lead to decline in stem cell function with age, and how the regenerative capacity of somatic stem cells can be enhanced to promote healthy aging. Here, we explore the effects of aging on stem cells in different tissues. Recent research has focused on the ways that genetic mutations, epigenetic changes, and the extrinsic environmental milieu influence stem cell functionality over time. We describe each of these three factors, the ways in which they interact, and how these interactions decrease stem cell health over time. We are optimistic that a better understanding of these changes will uncover potential strategies to enhance stem cell function and increase tissue resiliency into old age.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodell, Margaret A -- Rando, Thomas A -- P01 AG036695/AG/NIA NIH HHS/ -- R01 AG047820/AG/NIA NIH HHS/ -- R01 AR062185/AR/NIAMS NIH HHS/ -- R37 AG023806/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1199-204. doi: 10.1126/science.aab3388.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stem Cells and Regenerative Medicine Center, Center for Cell and Gene Therapy, and Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA. goodell@bcm.edu rando@stanford.edu. ; Glenn Center for the Biology of Aging and Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA, and Center for Regenerative Rehabilitation, Veterans Administration Palo Alto Health Care System, Palo Alto, CA 94304, USA. goodell@bcm.edu rando@stanford.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785478" target="_blank"〉PubMed〈/a〉
    Keywords: Adult Stem Cells/*physiology ; Aging/*physiology ; Animals ; Cell Aging ; Epigenesis, Genetic ; Genetic Drift ; *Health ; Humans ; Mice ; Mutation ; Organ Specificity ; Selection, Genetic
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gottlieb, Roberta A -- Bernstein, Daniel -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1162-3. doi: 10.1126/science.aad8222.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA. roberta.gottlieb@cshs.org. ; Department of Pediatrics, Stanford University, Palo Alto, CA 94304, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785456" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Heart/*embryology ; Heart Failure/*metabolism ; Male ; Mitochondria, Heart/*metabolism/*physiology ; Mitochondrial Degradation/*physiology ; *Mitochondrial Dynamics ; Myocardium/*metabolism ; Ubiquitin-Protein Ligases/*metabolism
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  • 89
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-03-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwartz, Gary J -- DK 020541/DK/NIDDK NIH HHS/ -- DK 026687/DK/NIDDK NIH HHS/ -- DK 105441/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2016 Mar 18;351(6279):1268-9. doi: 10.1126/science.aaf5216. Epub 2016 Mar 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Medicine & Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA. gary.schwartz@einstein.yu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26989239" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Energy Metabolism/*physiology ; Feeding Behavior/*physiology ; Hyperphagia/*genetics ; Male ; N-Acetylglucosaminyltransferases/*physiology ; Paraventricular Hypothalamic Nucleus/*physiology
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  • 90
    Publication Date: 2016-01-23
    Description: Mono-ubiquitination of Fancd2 is essential for repairing DNA interstrand cross-links (ICLs), but the underlying mechanisms are unclear. The Fan1 nuclease, also required for ICL repair, is recruited to ICLs by ubiquitinated (Ub) Fancd2. This could in principle explain how Ub-Fancd2 promotes ICL repair, but we show that recruitment of Fan1 by Ub-Fancd2 is dispensable for ICL repair. Instead, Fan1 recruitment--and activity--restrains DNA replication fork progression and prevents chromosome abnormalities from occurring when DNA replication forks stall, even in the absence of ICLs. Accordingly, Fan1 nuclease-defective knockin mice are cancer-prone. Moreover, we show that a Fan1 variant in high-risk pancreatic cancers abolishes recruitment by Ub-Fancd2 and causes genetic instability without affecting ICL repair. Therefore, Fan1 recruitment enables processing of stalled forks that is essential for genome stability and health.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4770513/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4770513/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lachaud, Christophe -- Moreno, Alberto -- Marchesi, Francesco -- Toth, Rachel -- Blow, J Julian -- Rouse, John -- WT096598MA/Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):846-9. doi: 10.1126/science.aad5634. Epub 2016 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. ; Centre for Gene Regulation and Expression, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. ; School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Bearsden Road, Glasgow G61 1QH, UK. ; Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. j.rouse@dundee.ac.uk.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26797144" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Chromosome Aberrations ; DNA Repair ; *DNA Replication ; Endodeoxyribonucleases/genetics/*metabolism ; Fanconi Anemia Complementation Group D2 Protein/genetics/*metabolism ; Female ; Gene Knock-In Techniques ; Genetic Predisposition to Disease ; Genomic Instability/*genetics ; Liver Neoplasms/genetics/pathology ; Lung Neoplasms/genetics/pathology ; Lymphoma/genetics/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Pancreatic Neoplasms/*genetics ; *Ubiquitination
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  • 91
    Publication Date: 2016-03-19
    Description: Maintaining energy homeostasis is crucial for the survival and health of organisms. The brain regulates feeding by responding to dietary factors and metabolic signals from peripheral organs. It is unclear how the brain interprets these signals. O-GlcNAc transferase (OGT) catalyzes the posttranslational modification of proteins by O-GlcNAc and is regulated by nutrient access. Here, we show that acute deletion of OGT from alphaCaMKII-positive neurons in adult mice caused obesity from overeating. The hyperphagia derived from the paraventricular nucleus (PVN) of the hypothalamus, where loss of OGT was associated with impaired satiety. These results identify O-GlcNAcylation in alphaCaMKII neurons of the PVN as an important molecular mechanism that regulates feeding behavior.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4817221/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4817221/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lagerlof, Olof -- Slocomb, Julia E -- Hong, Ingie -- Aponte, Yeka -- Blackshaw, Seth -- Hart, Gerald W -- Huganir, Richard L -- N01-HV-00240/HV/NHLBI NIH HHS/ -- P01 HL107153/HL/NHLBI NIH HHS/ -- P01HL107153/HL/NHLBI NIH HHS/ -- R01 DK061671/DK/NIDDK NIH HHS/ -- R01 NS036715/NS/NINDS NIH HHS/ -- R01DK6167/DK/NIDDK NIH HHS/ -- R01NS036715/NS/NINDS NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2016 Mar 18;351(6279):1293-6. doi: 10.1126/science.aad5494.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ; National Institute on Drug Abuse + National Institutes of Health/Johns Hopkins University Graduate Partnership Program, Baltimore, MD 21224, USA. ; Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ; Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Intramural Research Program, Neuronal Circuits and Behavior Unit, National Institute on Drug Abuse, Baltimore, MD 21224, USA. ; Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ; Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. rhuganir@jhmi.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26989246" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylglucosamine/metabolism ; Animals ; Calcium-Calmodulin-Dependent Protein Kinase Type 2/metabolism ; Energy Metabolism/genetics/*physiology ; Feeding Behavior/*physiology ; Gene Deletion ; Homeostasis/genetics ; Hyperphagia/*genetics ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; N-Acetylglucosaminyltransferases/genetics/*physiology ; Neurons/enzymology ; Obesity/genetics ; Paraventricular Hypothalamic Nucleus/cytology/enzymology/*physiology ; Protein Processing, Post-Translational ; Satiety Response/physiology
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  • 92
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-04-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landolt, Hans-Peter -- Holst, Sebastian C -- New York, N.Y. -- Science. 2016 Apr 29;352(6285):517-8. doi: 10.1126/science.aaf8178.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland. Zurich Center for Interdisciplinary Sleep Research, University of Zurich, Zurich, Switzerland. landolt@pharma.uzh.ch. ; Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland. Zurich Center for Interdisciplinary Sleep Research, University of Zurich, Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27126024" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cations/*metabolism ; Cerebral Cortex/*physiology ; Male ; Potassium/*metabolism ; Sleep/*physiology ; Wakefulness/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 93
    Publication Date: 2016-03-26
    Description: Shadlen et al's Comment focuses on extrapolations of our results that were not implied or asserted in our Report. They discuss alternate analyses of average firing rates in other tasks, the relationship between neural activity and behavior, and possible extensions of the standard models we examined. Although interesting to contemplate, these points are not germane to the findings of our Report: that stepping dynamics provided a better statistical description of lateral intraparietal area spike trains than diffusion-to-bound dynamics for a majority of neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Latimer, Kenneth W -- Yates, Jacob L -- Meister, Miriam L R -- Huk, Alexander C -- Pillow, Jonathan W -- New York, N.Y. -- Science. 2016 Mar 25;351(6280):1406. doi: 10.1126/science.aad3596.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. ; Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. ; Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. ; Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Psychology, The University of Texas at Austin, Austin, TX 78712, USA. ; Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Psychology, The University of Texas at Austin, Austin, TX 78712, USA. Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, NJ 08544, USA. pillow@princeton.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27013724" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Choice Behavior/*physiology ; Decision Making/*physiology ; Male ; Parietal Lobe/*physiology
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
    Publication Date: 2016-03-26
    Description: Latimeret al (Reports, 10 July 2015, p. 184) claim that during perceptual decision formation, parietal neurons undergo one-time, discrete steps in firing rate instead of gradual changes that represent the accumulation of evidence. However, that conclusion rests on unsubstantiated assumptions about the time window of evidence accumulation, and their stepping model cannot explain existing data as effectively as evidence-accumulation models.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shadlen, Michael N -- Kiani, Roozbeh -- Newsome, William T -- Gold, Joshua I -- Wolpert, Daniel M -- Zylberberg, Ariel -- Ditterich, Jochen -- de Lafuente, Victor -- Yang, Tianming -- Roitman, Jamie -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Mar 25;351(6280):1406. doi: 10.1126/science.aad3242.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute (HHMI) and Department of Neuroscience, Columbia University, New York, NY, USA. shadlen@columbia.edu. ; Center for Neural Science, New York University, New York, NY, USA. ; HHMI and Stanford University, Stanford, CA, USA. ; Department of Neuroscience, University of Pennsylvania, Philadelphia, PA, USA. ; Department of Engineering, University of Cambridge, Cambridge, UK. ; HHMI and Department of Neuroscience, Columbia University, New York, NY, USA. ; Center for Neuroscience and Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA, USA. ; Institute for Neuroscience, National Autonomous University of Mexico, Queretaro, Mexico. ; Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China. ; Department of Psychology, University of Illinois at Chicago, Chicago, IL, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27013723" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Choice Behavior/*physiology ; Decision Making/*physiology ; Male ; Parietal Lobe/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Jon -- New York, N.Y. -- Science. 2016 Jan 29;351(6272):434. doi: 10.1126/science.351.6272.434.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26823407" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Retroviral Agents/*pharmacokinetics/therapeutic use ; *Drug Resistance, Viral ; HIV/drug effects/*genetics/physiology ; HIV Infections/blood/*drug therapy/*virology ; Humans ; Lymph Nodes/*virology ; Male ; Mutagenesis ; RNA, Viral/analysis ; Tissue Distribution ; Virus Replication
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shanahan, Jesse -- New York, N.Y. -- Science. 2016 Jan 22;351(6271):418. doi: 10.1126/science.351.6271.418.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Jesse Shanahan is a master's student in astronomy at Wesleyan University in Middletown, Connecticut. Send your story to SciCareerEditor@aaas.org.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26798017" target="_blank"〉PubMed〈/a〉
    Keywords: Astronomy/*education ; *Career Mobility ; Disabled Persons/*psychology/statistics & numerical data ; Fear ; *Hostility ; Humans ; Male ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
    Publication Date: 2016-01-02
    Description: Several recent studies link parental environments to phenotypes in subsequent generations. In this work, we investigate the mechanism by which paternal diet affects offspring metabolism. Protein restriction in mice affects small RNA (sRNA) levels in mature sperm, with decreased let-7 levels and increased amounts of 5' fragments of glycine transfer RNAs (tRNAs). In testicular sperm, tRNA fragments are scarce but increase in abundance as sperm mature in the epididymis. Epididymosomes (vesicles that fuse with sperm during epididymal transit) carry RNA payloads matching those of mature sperm and can deliver RNAs to immature sperm in vitro. Functionally, tRNA-glycine-GCC fragments repress genes associated with the endogenous retroelement MERVL, in both embryonic stem cells and embryos. Our results shed light on sRNA biogenesis and its dietary regulation during posttesticular sperm maturation, and they also link tRNA fragments to regulation of endogenous retroelements active in the preimplantation embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharma, Upasna -- Conine, Colin C -- Shea, Jeremy M -- Boskovic, Ana -- Derr, Alan G -- Bing, Xin Y -- Belleannee, Clemence -- Kucukural, Alper -- Serra, Ryan W -- Sun, Fengyun -- Song, Lina -- Carone, Benjamin R -- Ricci, Emiliano P -- Li, Xin Z -- Fauquier, Lucas -- Moore, Melissa J -- Sullivan, Robert -- Mello, Craig C -- Garber, Manuel -- Rando, Oliver J -- DP1ES025458/DP/NCCDPHP CDC HHS/ -- R01HD080224/HD/NICHD NIH HHS/ -- UL1 TR000161/TR/NCATS NIH HHS/ -- UL1 TR001453/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Jan 22;351(6271):391-6. doi: 10.1126/science.aad6780. Epub 2015 Dec 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA. Program in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Obstetrics, Gynecology and Reproduction, Universite Laval, Centre Hospitalier Universitaire de Quebec Research Center, Quebec City, Quebec G1V 4G2, Canada. ; RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. Howard Hughes Medical Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA. RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. Howard Hughes Medical Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. oliver.rando@umassmed.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26721685" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/metabolism ; Diet, Protein-Restricted ; Epididymis/metabolism ; *Fertilization ; *Gene Expression Regulation ; Male ; Mice ; MicroRNAs/metabolism ; RNA, Transfer, Gly/*metabolism/*physiology ; Retroelements/genetics ; *Sperm Maturation ; Spermatozoa/*metabolism ; Testis/metabolism
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  • 98
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leslie, Mitch -- New York, N.Y. -- Science. 2016 Jan 1;351(6268):13. doi: 10.1126/science.351.6268.13.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26721982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/chemistry/genetics/metabolism ; *Epigenesis, Genetic ; Male ; Metabolism/*genetics ; Mice ; RNA, Transfer/genetics/*metabolism ; *Spermatozoa
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 2016-02-26
    Description: Hundreds of pathways for degradation converge at ubiquitin recognition by a proteasome. Here, we found that the five known proteasomal ubiquitin receptors in yeast are collectively nonessential for ubiquitin recognition and identified a sixth receptor, Rpn1. A site ( T1: ) in the Rpn1 toroid recognized ubiquitin and ubiquitin-like ( UBL: ) domains of substrate shuttling factors. T1 structures with monoubiquitin or lysine 48 diubiquitin show three neighboring outer helices engaging two ubiquitins. T1 contributes a distinct substrate-binding pathway with preference for lysine 48-linked chains. Proximal to T1 within the Rpn1 toroid is a second UBL-binding site ( T2: ) that assists in ubiquitin chain disassembly, by binding the UBL of deubiquitinating enzyme Ubp6. Thus, a two-site recognition domain intrinsic to the proteasome uses distinct ubiquitin-fold ligands to assemble substrates, shuttling factors, and a deubiquitinating enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shi, Yuan -- Chen, Xiang -- Elsasser, Suzanne -- Stocks, Bradley B -- Tian, Geng -- Lee, Byung-Hoon -- Shi, Yanhong -- Zhang, Naixia -- de Poot, Stefanie A H -- Tuebing, Fabian -- Sun, Shuangwu -- Vannoy, Jacob -- Tarasov, Sergey G -- Engen, John R -- Finley, Daniel -- Walters, Kylie J -- New York, N.Y. -- Science. 2016 Feb 19;351(6275). pii: aad9421. doi: 10.1126/science.aad9421.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA. ; Protein Processing Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. ; Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA. ; Protein Processing Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China. ; Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China. ; Protein Processing Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. Linganore High School, Frederick, MD 21701, USA. ; Biophysics Resource, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. ; Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA. j.engen@neu.edu kylie.walters@nih.gov daniel_finley@hms.harvard.edu. ; Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA. j.engen@neu.edu kylie.walters@nih.gov daniel_finley@hms.harvard.edu. ; Protein Processing Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA. j.engen@neu.edu kylie.walters@nih.gov daniel_finley@hms.harvard.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912900" target="_blank"〉PubMed〈/a〉
    Keywords: DNA-Binding Proteins/metabolism ; Endopeptidases/metabolism ; Metabolic Networks and Pathways ; Models, Molecular ; Mutation ; Proteasome Endopeptidase Complex/chemistry/genetics/*metabolism ; Saccharomyces cerevisiae/*metabolism ; Saccharomyces cerevisiae Proteins/*chemistry/genetics/*metabolism ; Ubiquitin-Specific Proteases/metabolism ; Ubiquitination
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin-Frankel, Jennifer -- New York, N.Y. -- Science. 2016 Jan 29;351(6272):440-3. doi: 10.1126/science.351.6272.440.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26823410" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Child, Preschool ; DNA Mutational Analysis ; DNA Repair/genetics ; Female ; *Genes, Neoplasm ; *Genetic Predisposition to Disease ; Humans ; Male ; Mutation ; Neoplasms/*genetics/mortality ; Pedigree ; Tumor Suppressor Protein p53/genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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