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  • SPACE SCIENCES
  • Fisheries
  • 2015-2019  (101)
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  • 11
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    Application of microsatellite markers to determine populations of the Persian sturgeon (Acipenser persicus) (2018)
    Details
    Publication Date: 2021-05-19
    Description: The objective of this study was to analyse the population genetic structure of the Persian sturgeon (Acipenser persicus) in Sefidrud and Gorganrud rivers watershed based on the characterization of microsatellite markers during 2006 – 2008. 100 samples of Persian sturgeon were collected from two regions. Four microsatellite loci ( Ls 68 , Spl 168 , Spl 173 and Afu 68 ) were analyzed for the molecular characterization of this species which resulted in polymorphic patterns. DNA bands were analysed using Biocapt and GenAlex software package. A total of 109 alleles were observed of which the maximum number of alleles (17) were found in Spl168 locus which belonged to sturgeons from Sefidrud river,s watershed and the minimum number of alleles (10) in Ls68 locus belonging to the sturgeons from Gorganrud river,s watershed. Results of microsatellite analysis revealed that the differences between samples of two regions were not statistically significant (p〉0.05), neither for the average number of alleles per locus nor for observed heterozygosities. The calculated Fst and Rst between two regions was 0.07 and 0.17 showing that the genetic difference was significant (p〈 0.01). Samples from Sefidrud river,s watershed in Spl173, Afu68 and Spl168 loci and samples of other regions in Afu68 and Spl168 loci were at Hardy-Weinberg equation. The genetic distance was calculated as 0.4 which represents a significant genetic difference between samples of two studied areas. I n conclusion, this study suggests that the Persian sturgeons in two regions of the southern part of the Caspian Sea are genetically differentiated, therefore fisheries management of these unique stocks for restocking and conservation of gene pools is highly recommended.
    Description: Published
    Keywords: Persian sturgeon ; Acipenser persicus ; Caspian Sea ; Microsatellite ; Genetic structure ; Population genetic ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.596-606
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  • 12
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    Population dynamics of the Metapenaeus monoceros (Fabricius, 1798) in North-eastern Mediterranean Sea (2018)
    Details
    Publication Date: 2021-05-19
    Description: Monthly sampling of speckled shrimp was conducted by bottom trawl in the Iskenderun Bay between November 2009 and October 2010. There was a linear relationship between carapace length and total length in males and females (TL = -0.112 + 0.2294*CL R2 = 0.8298, n = 327) for males, (TL = -0.3918 + 0.2731 * CL R2 = 0.8919, n = 457) for females, and (TL = -0.378 + 0.2684 * CL R2=0.8492, n=784) for total individuals. Total length-weight relationships were W=0.0135*TL2.7817 for males, W= 0.0115*TL2.8535 for females, and W=0.0109*TL2.8108 for total individuals. The von Bertalanffy growth constants in length was TL= 162.75mm, K = 1.39 year–1, t0 = -0.0604 year for males TL= 178.40mm, K = 1.51 year-1, t0 = -0.780 year for females and TL= 174.14mm, K = 1.47 year-1, t0 = -0.0721 year for total individuals. In this study, the total (Z), natural (M) and fishing (F) mortality coefficient and exploitation rates (E) were determined as 5.39 year-1, 2.39 year-1, 3.00 year-1 and E=0.56 year-1, respectively for all of the obtained individuals.
    Description: Published
    Keywords: Biology ; Physiology ; Metapenaeus monoceros ; Population dynamical ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.955-966
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  • 13
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    Age and growth of Capoeta erhani Turan, Kottelat and Ekmekçi, 2008 from the Seyhan River (Southeast of Turkey) (2018)
    Details
    Publication Date: 2021-05-19
    Description: Capoeta erhani is an endemic species to Southeast of Turkey. To date the information on biology of this species from inland waters of Turkey is very limited. The present study aims to provide the basic age and growth parameters of C. erhani from the middle basin of the Seyhan River. In total, 255 individuals were collected seasonally between October 2013 and September 2014. The overall sex ratio was 3.47:1 M : F. The total length of the specimens ranged from 10.4 to 33.0 cm and the weight from 9.0 to 360.0 g. The ages of total examined fish ranged from 0 to 5 years. Maximum age was found to be 5 years for both sexes. Length-weight relationship was described as logW= -5.067 + 3.168 logTL (r2= 0.972). The von Bertalanffy growth parameters were: L∞ = 32.51 cm; k = 0.400 year-1; t0 =-0.930 year for the entire population. Munro’s phi prime index in males, females and both sexes was calculated as 6.00, 6.12 and 6.04.
    Description: Published
    Keywords: Biology ; Physiology ; Capoeta erhani ; Endemic species ; Growth parameters ; Fisheries ; Sex ratio ; Length-weight relationship ; Fish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.980-994
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  • 14
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    Study on Tehran citizens behavior change in consumption of the aquatic products (2018)
    Details
    Publication Date: 2021-05-19
    Description: To understand the change in fish consumption behavior of Tehran citizens (Iran), in the year 2005, an investigation was conducted using questionnaire. Using independent random method, 316 families covering all 22 districts of Tehran were selected. The results were combined with that acquired in the year 2001 to develop marketing programs. We used Fridman, K2 tests for nonparametric statistics and Z (normal distribution) and Phi Cramer index for analysis. The results showed that the quality and freshness of the products and the hygienic state of the distributing places had the highest effects on purchase. Also, the price and packaging had the same priority as in the year 2001. No significant relationship was found between income level of the families and their fish consuming tendency. Comparing the two years of study, we found that 16.6% more people preferred packed food in the year 2005 while per capita consumption had increased from 2.8 to 3.46kg. With the information on production date and health license already available on the products, the consumers demanded dietary contents. Considering the increase in marine fishery products, the families tended to consume more of the farmed aquatics with the live selling of rainbow trout being preferred the most. The behavior of consumers and their decisions to purchase fishery products in this period depended on production directions and economic development strategies which indicated positive aquaculture development programs in the country. We recommend continuing current policies regarding marketing factors. The results also showed that uncertainly about freshness and health of the products is the main reason for purchase from the representative fishery stores. The results shows more research and advertisement can improve awareness about packing advantages and its role in decreasing wastes and creating more added values.
    Description: Published
    Keywords: Oncorhynchus mykiss ; Brackish ; Marine fisheries ; Diets ; Fish consumption ; Marketing ; Aquaculture products ; Fisheries ; Marine ; Aquaculture ; Feeding experiments ; Economics ; Food ; Aquaculture development
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.117-126
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  • 15
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    An audit of sturgeon reproduction in Iran over the years 1998 -- 2002 (2018)
    Details
    Publication Date: 2021-05-19
    Description: Iranian Fisheries Institutes in the north of the country are involved in the reproduction, culture and release of five species of sturgeon fingerlings into the Caspian Sea. The species are Acipenser persicus, A. guldenstadti, A. nudiventris and A. stellatus and Huso huso. Shahid Beheshti Fisheries Centre as the first commercial hatchery started its activities in 1972 in Rasht, Guilan Province of Iran. The centre achieved a production ceiling of 21.6 million fingerlings in 1997 and increased it to 24.5 million fingerlings in 1998. It is anticipated that the centre will achieve a threshold of 45 millions fingerlings in the next few years. During 1997-2002, the centre has increased its extent from 377 hectares to 887 hectares For Huso huso production, 17 specimens were caught in 1998, of which 10 were injected that produced 1.08 million fingerlings and in 2002, the number of caught and injected Huso huso were 29 and 21 respectively, that resulted in production and release of 2.4 million fingerlings. A number of 1062 A. persicus breeders were caught in 1998 of which 581 individuals were injected with hypophysis extract resulting in production and release of 22.5 million fingerlings. Of 538 injected individuals from among a total 802 breeder fish caught in 2002, a number of 12.3 million fingerlings were produced and released into the sea. The catch for Acipenser stellatus in 1998 was 193 breeders that produced 623000 fingerlings. In 2002, the catch increased to 290 breeders, of which 67 received injections to produce 1.3 million fingerlings. A total number of 0.67 million fingerlings of A. guldenstadti was produced in 1998 which was increased to 1.78 millions in 2002. For Acipenser nudiventris, the number of fingerlings produced in 1998 was 0.4 which was increased to 1.56 millions in 2002.
    Description: Published
    Keywords: Huso huso ; Acipencer persicus ; A. stellatus ; A. nudiventris ; A. guldenstadti ; Sturgeon fish ; Stock Enhancement ; Fingerlings ; Production ; Fisheries ; Species
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.97-112
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  • 16
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    Diet of Rutilus frisii kutum x Ctenopharyngodon idella hybrid (2018)
    Details
    Publication Date: 2021-05-19
    Description: This research project was carried out in Gulian Fisheries Research Center in 1998. For this purpose, two ponds were selected: Pond No. 1 with 450m2 area and pond No.2 with 250m2 area and then 3500 pieces/hectar of hybrids with 5-7g weight were added to the ponds. In order to determine their main food, they were fed by pelletes and grass according to their mean weight. Meanwhile, by adding mineral and organic fertilizers to the water, a suitable media including phytoplanktons, zooplanktons and benthoses were prepared for feeding of fishes. The stomach contents observations of 160 specimen of hybrids showed that this hybrid is a herbivorous fish and macrophytes were their main diet; and phytoplanktons could be considered as the secondary random food.
    Description: Published
    Keywords: Rutilus frisii kutum ; Grass Carp ; Hybrid ; Diet ; Fisheries ; Weight ; Fertilizer ; Phytoplanktons ; Zooplanktons ; Benthoses ; Specimens
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.31-42
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  • 17
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    Entrepreneurship development; a step towards achieving the economic and social goals of fisheries: (Explanation and ranking of effective environmental factors using fuzzy Delphi and FAHP approach) (2017)
    Details
    Publication Date: 2021-05-19
    Description: The purpose of the present research was to identify and rank the effective environmental (background) indices on OE process in Mazandaran Fisheries Organization. In terms of data collection, the method used in this study was the descriptive-survey method and in terms of research purposes, it was an applied research. Statistical population included experts and leading experts of Mazandaran fisheries organization in 2014. After literature review, the effective environmental (background) indices on OE were identified. Data were collected using Delphi and paired comparisons questionnaires, and analyzed using fuzzy Delphi method and FAHP. The results showed that the effective environmental (background) indices on OE, in order of priority, were the economic environments, legal-political environment, social-cultural environment, technological environment, administrative environment and international environment.
    Description: Published
    Keywords: Development ; Economic ; Environmental ; Organizational Entrepreneurship ; Fuzzy Delphi ; Fuzzy AHP ; Mazandaran Fisheries Organization ; Entrepreneurship ; Fisheries ; Explanation ; Ranking ; Factors
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.125-138
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  • 18
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    The effect of fisheries activities on Spiny Lobster resources (2018)
    Details
    Publication Date: 2021-05-19
    Description: The commercial fishing of spiny lobster (Panulirus homarus) has been started since 1991 in Sistan-o-Baluchestan province with an annual catch 20-50 tons. In this paper, it has been tried to study the fishing pressure on this resources during 1st years. In this regard, the biometric data of 4 years consist of 1991, 1994, 1996 and 1997 were collected for further statistical analysis, These data are: total length, total height, carapace length, sex, maturity stages, fishing season and fishing ground. The analysis was done by using Foxpro and SPSS programs. The results of the mean height and mean weight of this species showed a decreasing trend from starting it should he the result of overfishing.
    Description: Published
    Keywords: Commercial ; Fisheries ; Spiny Lobster ; Fishing ; Panulirus homarus ; Length ; Height ; Sex ; Maturity ; Species ; Overfishing
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.49-60
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  • 19
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    Creation and promotion Iranian fisheries research institute laboratories data base (2017)
    Details
    Publication Date: 2021-05-19
    Description: Creating a database of affiliated laboratories of the institute is organized with the aim of integrating information related to laboratories of research centers and their subsidiaries. The main objective of conducting this project in this stage is to upgrade it, establish and running one software system based on up-to-date technology of networking. For this purpose organizing the centers database, a periodic report on various aspects can be done which help for implementing appropriate monitoring and management .Among the sectors that are designed and upgraded for this system include : Portal, bank of information, advanced possibilities for inputting data, searching and reporting on laboratory.The advantages of this precise and updated reports can be collected easily from the general information of research institutes and centers, reports of the number of lab experts with different educational levels in affiliated centers, awareness of numbers and status of the chemical materials in the laboratories of each center, and the significant and important point is about economizing equipment, chemical materials and on time calibration.
    Description: Published
    Keywords: Bank of information ; Laboratories ; Research institute ; Network ; Data ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.149-153
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  • 20
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    Assessment of Fisheries Resource, Analysis of Fishing and Hunting Status in Hormozgan Province, 1992 (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fisheries ; Resource ; Fishing
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 101pp.
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