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  • Biology  (13)
  • 1
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    Probiotic administration of Litopenaeus vannamei: Is there any negative effect on the fatty acid profile of meat? (2018)
    Details
    Publication Date: 2021-05-19
    Description: It has been found that appropriate probiotic applications increased growth performance and disease resistance in shrimp. Bacillus subtilis has been suggested as a potent probiotic in improving growth performance and enhancing immune response in white shrimp, Litopenaeus vannamei. The aim of this work was to evaluate the possible effect of B. subtilis administration on the meat fatty acid profile of white shrimp, L. vannamei. Two groups of shrimps received B. subtilis strains L10 and G1 from the B. subtilis-supplemented feed (105 and 108 CFU g-1) while two other groups received it from the rearing water (105 and 108 CFU ml-1). One group received no B. subtilis and served as control. According to the results, there was no significant difference between the muscle fatty acid profiles of shrimps administrated by probiotic and control group. This study showed that B. subtilis administration, in either diets or water, did not have any negative effect on fatty acid profiles of L. vannamei meat.
    Description: Published
    Keywords: Biology ; Physiology ; Probiotic ; Fatty acid ; Litopenaeus vannamei ; Nutrition
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.550-559
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  • 2
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    Isolation, identification and evaluation of antimicrobial activity of Actinomycetes from marine sediments of Persian Gulf (Hormozgan Province) (2021)
    In:  http://aquaticcommons.org/id/eprint/22100 | 18721 | 2018-02-08 03:01:57 | 22100 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-06-26
    Description: Actinomycetes are gram positive and filamentous bacteria and produce a major portion of bioactive compounds. The aim of this study was to isolate and identify antibiotic-producing actinomycetes from Persian Gulf marine sediments within Hormozgan province territory. Among 3 selected isolation media the M1 medium showed highest efficacy by isolation of 32 colonies. Heat treatment of 100 ºC for 60 min isolated 26 colonies and showed the best result. Approximately 60 Actinomycete isolates were obtained from 10 sediment samples. Evaluation of antimicrobial activity showed that 33, 20 and 30 % of isolates exhibited antimicrobial activity against S.aureus, E.coli and C.albicans respectively.Morphologic, physiologic and chemotaxonomic studies showed that selected potent isolates consist of Ifro12, Ifro 33 and Ifro 47 belonged to Streptomyces genus. Molecular genetic studies based on 16s rRNA gene analysis revealed that Ifro12, Ifro 33 and Ifro 47 exhibited 99 % similarity to S.olivaceus, S.cacaoi and S.variabilis respectively. Phylogenetic analysis showed that Ifro12 and Ifro 47 derived from a common ancestor. The results of the present research indicated that these three isolates could be considered as promising candidates for antibiotic discovery researches.
    Keywords: Biology ; Chemistry ; Fisheries ; Marine Actinomycetes ; Antimicrobial activity ; Marine sediments ; Persian Gulf ; Hormozgan Province ; Isolation ; Identification ; Evaluation ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 81-94
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  • 3
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    Qanat fishes in Markazi and Sirjan basins of Kerman Province, Iran (2021)
    In:  http://aquaticcommons.org/id/eprint/23654 | 18721 | 2018-07-15 00:17:17 | 23654 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-14
    Description: A survey on the qanat fishes of the Markazi and Sirjan basins of Iran was carried out in the year 2001. Using electroshocker, cast net and river seine, we collected 767 specimens from 73 qanats in the study area. We also measured pH, water temperature, air temperature, oxygen and other important attributes of the environment. The fish specimens belonged to 2 orders, 3 families and 3 species. Of the order Cypriniformes, the family Cyprinidae was present with one species Capoeta damascina (Valenciennes, 1849) and the family Balitoridae was represented with one species Nemachilus sargadensis (Nikolskii, 1900) of the order Cyprinodontiformes, the family Poecilidae was represented with the species Gambusia affinis (Baird &Girard, 1853).
    Keywords: Biology ; Taxonomy ; Freshwater fish ; Freshwater ; Check lists ; Basins ; Inland water environment ; Poecilidae ; Cyprinodontiformes ; Cyprinidae ; Capoeta damascina ; Gambusia affinis ; Balitoridae ; Nemachilus sargadensis ; Kerman ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 153-160
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  • 4
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    Probiotic administration of Litopenaeus vannamei: Is there any negative effect on the fatty acid profile of meat? (2021)
    In:  http://aquaticcommons.org/id/eprint/22708 | 18721 | 2018-05-16 19:03:07 | 22708 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-09
    Description: It has been found that appropriate probiotic applications increased growth performance and disease resistance in shrimp. Bacillus subtilis has been suggested as a potent probiotic in improving growth performance and enhancing immune response in white shrimp, Litopenaeus vannamei. The aim of this work was to evaluate the possible effect of B. subtilis administration on the meat fatty acid profile of white shrimp, L. vannamei. Two groups of shrimps received B. subtilis strains L10 and G1 from the B. subtilis-supplemented feed (10^5 and 10^8 CFU g^-1) while two other groups received it from the rearing water (10^5 and 10^8 CFU ml^-1). One group received no B. subtilis and served as control. According to the results, there was no significant difference between the muscle fatty acid profiles of shrimps administrated by probiotic and control group. This study showed that B. subtilis administration, in either diets or water, did not have any negative effect on fatty acid profiles of L. vannamei meat.
    Keywords: Aquaculture ; Biology ; Fisheries ; Probiotic ; Fatty acid ; Litopenaeus vannamei ; Nutrition ; Biology ; physiology ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 550-559
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  • 5
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    17, 20 α dihydroxy progesterone (17, 20 α DP) production by different tissue in common carp (Cyprinus carpio) and gold fish (Carassius auratus) (2021)
    In:  http://aquaticcommons.org/id/eprint/23969 | 18721 | 2018-08-02 11:51:28 | 23969 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: Different tissue (muscle, heart, eye, testis and blood) and sperm from Common carp and Gold fish, in order to evaluate activity of 20α hydroxy steroid Dihydrogenase (20α HSD) enzyme to convert radioactive 17α HP and amount of 0.01, 1 or 10 mg of nonradioactive hormones, were studied. Converting of substra to 17, 20α DHP was more than 30% in 100mg of eye, heart and testis tissue, 12% in 20cc blood and 18% in 20cc sperm, but it was less than 5% in 100 mg of muscle tissue. 17, 20α DHP was the only metabolite in non gonadal tissues incubations no significant enzyme activity was found in lense-eyeball fluid and retin of common carp. Possible relationship between 20α and 20β dihydroxy steroid dehydrogenase enzymes in fish, 20 hydroxy steroid dehydrogenase and aldo and Keto reductase enzymes has been discussed.
    Keywords: Biology ; 17 ; 20 α Dihydroxy Progesterone ; Gold Fish (Carassius auratus) ; Common Carp (Cyprinus carpio) ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-14
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  • 6
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    Identification of freshwater fishes in some permanent rivers of Kerman Province (2021)
    In:  http://aquaticcommons.org/id/eprint/24031 | 18721 | 2018-08-03 06:53:50 | 24031 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: The research project of “Identification of Kerman Province Fishes" was carried out from 1996 to 1997. In this study, the fishes of the main rivers of this province, namely: Baft, Soltani, Halil-rood, Delfa-rood, Seyyed-Morteza, Rabor, Roodbar and Halil-kouchak were identified. During one year sampling from above mentioned rivers, a total or 771 samples were collected which they belong to 2 orders, 3 families and 7 species. The identification fishes were: Capoeta damascina, Cyprinion watsoni, Garra persica, Carassius auratus, Cyprinus carpio from CYPRINIDAE family. Nemacheilus sargadensis from cobitidae family and Channa gachua from CHANNIDAE family.
    Keywords: Biology ; Ecology ; Freshwater fishes ; Kerman Province ; Baft ; Soltani ; Halil - rood ; Delfa -rood ; Seyyed-Morteza ; Rabor ; Roodbar ; Halil-kouchak ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1-12
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  • 7
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    Using of benthic indices and GIS maps to determination of biotic health of Khure- Mussa (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25267 | 18721 | 2018-09-07 08:20:55 | 25267 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Without industrial and urban development and their effects on marine ecosystem, due to high biotic potential, Khure-Mussa would be one of the productive coastal areas. Because of sensitivity and vulnerability to environmental changes this area are classified in sensitive ecologic area. This study was conducted to evaluation ecological health status in Khure-Mussa in the Northwest of Persian Gulf by using benthic indices. Twenty creeks in Khure-Mussa area were set up for study and sampling in four seasons from winter 2008 to autumn 2009. Monthly water sampling for physico-chemical parameters was done by bottle sampler and seasonal samples of surface sediment were collected by Peterson grab sampler (0.125m^2) .At each station three samples for macrobenthic study and one sample for grain size analysis and organic matter determination were obtain. Totally, 187589 macrobenthic individual were collected and separated. Among identified groups, Polychaetes with total number108906, Crustacean with total number 46561, Bivalve with total number 14156 and seapen with total number 9841 were the dominant groups and were included 58, 25, 8 and 5 percentage of total number respectively. The highest abundance in the spring and the lowest abundance in the summer were observed. According to mean abundance, Somaily creek and Khure-mussa (3) station showed the highest and the lowest abundance respectively. Seapen is included more than 90 % of total biomass. The range of Shannon diversity index was (1.95-3.58) which the minimum and the maximum values were found in Shipping and Patil station respectively. Significance benthic biological parameters (abundance and richness) in different creeks explained the variation of benthic community structure in studied creeks. In addition, seasonal significant differences were found in these parameters due to seasonal changes in benthic animal s succession. The results of grain size analysis showed that the range of siltclay was (63.6-95.59). According to AMBI index values, all of the studied creeks are classified in slightly pollution level and disturbed condition except for Petrochemical station that placed in moderate pollution level. The BOPA index values in all stations showed more than threshold level (0.19) that means bad and weak ecological condition. The highest and the lowest ITI index values were observed in Oil exporting port station (64.92) and Ghazaleh creek (29.53) respectively. The others were grouped in 30-60 range that means moderate pollution level and disturbed ecological status. The values of ABC (Abundance Biomass Curve) that explained the relation between macrobenthic biomass and abundance, were calculated near zero from 0.1 to -0.1 in all studied creeks that show moderate condition for living animals. In general the studied creeks showed pollution potential and benthic biological parameters indicated downward trend in ecological quality and health status.
    Keywords: Biology ; Ecology ; Iran ; Persian Gulf ; Khure-Mussa ; Ecological health ; Benthic animals ; Biotic indices ; GIS ; Marine ; Ecosystem ; Sampling ; Macrobenthic ; AMBI ; BOPA ; Pollution ; Biomass ; Abundance ; Parameters
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 226
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  • 8
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    Using computer assisted sperm analysis (CASA) to monitoring the effects of zinc and cadmium pollution on fish sperm (2021)
    In:  http://aquaticcommons.org/id/eprint/22268 | 18721 | 2018-03-07 08:12:18 | 22268 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-01
    Description: Since the quality of sperm is affected by water industrial or agriculture pollution, sperm motility was measured as a sensitive and accurate bioindicator of water quality. In this study, sperm motility was measured by a computer assisted sperm analysis after 24 hours exposure of sperm to different concentration of heavy metals (Cadmium and Zinc). The results show that the sperm motility was not related to the duration of exposure but to the metals concentration ration. The concentration of 1000ppm zinc or 2000ppm Cadmium could have adverse effect on sperm motility.
    Keywords: Aquaculture ; Biology ; Fisheries ; Sperm motility ; CASA ; Heavy metals ; Pollution ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 81-100
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  • 9
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    Lead contamination in fishes of the Kor River (2021)
    In:  http://aquaticcommons.org/id/eprint/22311 | 18721 | 2018-03-20 17:45:30 | 22311 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-02
    Description: Lead concentration in muscle, liver, kidney, brain and gonad tissues of two cyprinid fishes, Cyprinus carpio and Copoeta spp., from three sections of the upper, middle and lower parts of the Kor River was evaluated in 2006. Totally 225 specimens were caught for this purpose (75 specimens from each zone). Tissue samples were digested in acid and their lead concentrations were assayed by ICP method. Statistical analysis of data showed significantly (p〈0.05) higher concentrations of lead in the mid zone than the two other zones. No significant differences (p〉0.05) were seen between sexes and species. The same pattern of contamination was also observed in water and sediment samples from three sampling zones. The maximum amount of lead measured in this study (1.85mg/kg), was, however, less than the maximum allowance in fish tissues by European Unions.
    Keywords: Biology ; Fisheries ; Lead ; Fish ; Contamination ; Kor River ; Fars Province ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
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  • 10
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    Distribution and abundance of phytoplankton in Hormuzgan province, Hormuz Strait and the Persian Gulf waters (2021)
    In:  http://aquaticcommons.org/id/eprint/23819 | 18721 | 2018-07-27 16:11:54 | 23819 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: Distribution and density of different phytoplankton groups in Hormuzgan province along the Persian Gulf, from Sirik Harbor to Nayband Bay were studied during winter 2004. Sampling was carried out on board of Ferdous-1 research vessel in seven transects (21 stations) in three lines including surface layer (0-20m), middle and bottom layers (20-50m and more than 50m, respectively). We found 46 genera of diatoms (Bacillariophyceae), 19 genera of dinoflagellates, 6 genera of blue-green algae (Cyanophyceae), 1 genus of Euglenophyceae and 1 genus of Chrysophyceae. We recorded maximum and minimum phytoplankton density in different transects at 37665583 and 2433208 cells/m3 respectively. The maximum density was 62762083 cells/m3 for Bacillariophyceae group that was sampled in surface layer (0-20m) of the station 9. Also, we found that average total number of phytoplankton in three lines of seven transects was 11728973 cells/m3. One way ANOVA showed a significant difference for average number of phytoplankton for each transect (P〈0.05) but no significant difference in number of phytoplankton in different depths (P〉0.05).
    Keywords: Biology ; Ecology ; Phytoplanktons ; Abundance ; Hormuzgan province ; Persian Gulf ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 69-78
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