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  • 1
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    Stock assessment of sturgeon fishes in the southern part of Caspian Sea (Iranian water) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25298 | 18721 | 2018-09-07 08:30:09 | 25298 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The marine survey for sturgeon stock assessment was conducted in summer, winter and spring in the years 2006 and 2009 to estimate the relative and absolute abundance and percentage composition of each species in the Guilan, Mazandaran and Golestan Provinces. This survey was carried out in the Iranian waters of the Caspian Sea on board the Sisara2 and Guilan vessels using trawl nets at 2-100 m depths. Trawling was carried out in 85 stations that were selected using a stratified random design. The number of stations in each scope was based on the area of the scope in terms of the total area. Trawling and sampling in shallow water up to 10 m were carried out using 9 m trawl nets whereas 24.7 m trawl nets were used for depths more than 10 m. Trawl surveys were carried out in the daytime. Trawling velocity was kept at 2.5-3 kts and trawls lasted half an hour in order to calculate abundance, and biomass of sturgeons using the swept area method. Catch per unit area (CPUA) in the winter 2006 survey was 3853 specimens nm^2 , in the summer and winter 2007 survey was 1854 , 2912 specimens nm^2 at depths less than 10 m respectively . CPUA for sturgeons in spring 2008 survey was 2103 specimens nm2 at depths less than 10 m and 393 specimens nm2 at depths greater than 10 m (10-100 m depth). These values in the winter 2008 survey dropped to 44 specimens nm^2 at depths at depths above 10 m. CPUA for sturgeons in the spring 2009 survey was 300 specimens nm^2 at depths less than 10 m and 307 specimens nm^2 at depths greater than 10 m. In all the surveys conducted CPUA for A. persicus was higher than that for the other sturgeon species. Based on the calculations carried out in the marine survey in winter 2006 the estimated absolute abundance for sturgeons was about 2977.363 thousand. The total biomass of sturgeon was estimated as 131.713 tons. In the summer 2007 survey total abundance was estimated 1432.398 thousand, and total biomass of sturgeons was estimated at about 312.161 tons. In the winter 2007 survey total abundance for sturgeons was estimated at about 2250.105 thousand, and total biomass was estimated 578.08 tons. In the spring 2008 survey total abundance was estimated at about 3002.832 thousand. The total biomass was estimated at about 2533.318 tons .In the winter 2008 survey total abundance was estimated at about 152.722 thousand, and total biomass in winter 2008 was estimated 170.540 tons. Total abundance in spring 2009 survey was 1310.232 thousand and total biomass was estimated at 2019.tons. Investigation of stomach content of sturgeon Acipenser persicus caught under 10m depth in 2006 to 2007 surveys showed that there is significant difference in the consumed food. Polychaeta is the major food consumed and crustacean an the minor one(P〉0.05).Also no new types of food( such as bony fishes or benthic) have been observed in food chain of Acipenser persicus only the food consumption rate has been related to the season of year and increases or decreases in warm or cold seasons, respectively For physiological study and determination of sexual maturation stages in sturgeon,119 gonad sampling prepared. The results showed that 63 % of fishes were females and 37 % of them were males. Gill microscopic study shows complications such as hyperplasia, curvature, adhesion, embowed, shorting and lengthen of secondary filaments and fraught bloody. Microscopic study on liver indicates signs of cloudy inflammation, fatty degeneration, dispersion of billed secretions and cell atrophy. The population genetic structure of Persian sturgeon (Acipenser persicus) in Sefidrood and Gorganrood rivers watershed analyzed based on microsatellite markers during sturgeons assessment in 2006-2008. Results showed that Acipenser persicus in two region of south part of Caspian Sea are two independent populations.
    Keywords: Fisheries ; Iran ; Caspian Sea ; Mazandaran Province ; Golestan Province ; Guilan Province ; Sefidrood River ; Gorganrood River ; Stock assessment ; Sturgeon ; Acipenser persicus ; Diet ; Gills ; Sex ; Microsatellite ; Population ; Genetic ; Survey ; Species ; Sampling ; Trawling ; CPUA ; A. persicus ; Biomass ; Polychaeta ; Maturation
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 154
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  • 2
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    Environmental risk assessment of the activity of specific pathogen free shrimp production centers (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25698 | 18721 | 2018-10-08 09:34:51 | 25698 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study is a part of the national and technology master plan entitled "Attain to technical knowledge of specific pathogen free shrimp production and cut off to dependence on foreign products". The goals of this work were to assess and analysis the risk factors of production of specific pathogen free Litopenaeus vannamei shrimp in its all stages (broodstocking, laravl production, shrimp farming, feeding and water quality), determining the pattern of outcomes monitoring, management and control of outcomes from April 2012 to September 2015 in Bandargah research station and Persian Gulf SPF Shrimp research station and their environment, belonging to Shrimp Research Center, located in Bushehr. Identification and screening of risk factors have been done based on Environment Aspect and Effect Analysis method, (EA)2, using a fine statement questionnaire and quantification of risks. The number of identified risk factors in Bandargah research station was 15 while it was 13 in Persian Gulf SPF Shrimp research station. The more number of risk factors in Bandargah station in respect to its number in Persian Gulf station is might due to lower level of biosecurity, physical structure and aging of Bandargah station and existence of two possible source of contamination, the Bushehr nuclear power plant pollutants and Bandargah fishing harbor, near to the station. On the basis of results, the maximum values of APN in Bandargah station was 42 while it was 30 in Persian Gulf station. These results revealed that the level of risk in Bandargah station is lower than that in Persian Gulf station. The most probable risks in both studied research stations are related to transmission of pathogens in shrimp feeding and water intake pollution.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Bushehr ; Environmental risk assessment ; Shrimp ; Litopenaeus vannamei ; Specific pathogen free
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 80
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  • 3
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    Investigation on possibility of enrichment pasta by using spirulina microalgae (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25712 | 18721 | 2018-10-10 10:02:17 | 25712 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: The aim of this study was to investigate the possibility of producing enrichment pasta by adding spirulina powder in commercial pasta formulation. For achievement to this aim, Spirulina platensis power of 0, 0.25, 0.5, 0.75 and 1 percent was added in pasta formulation. Pasta with no adding spirulina (0% ) was used as control. Sensory properties, color, texture, fat, protein, minerals, amino acids, fatty acids and cooking properties were analyzed. Results indicated that no microbial effects was found in research samples com paring to the control. No significant (p〈0.05) effects were found between the control and other samples in sensory properties. Results also indicated that protein and iron content in the samples including sprulina were significantly higher the control. Physical characteristics of the samples during the cooking showed that all samples had standard level.
    Keywords: Fisheries ; Iran ; Investigation ; Microalgae ; Spirulina platensis ; Protein ; Minerals ; Fat ; Fatty acids ; Physical
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 42
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  • 4
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    Exploring Indonesian aquaculture futures (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/18467 | 115 | 2015-10-28 07:40:12 | 18467 | WorldFish Center
    Details
    Publication Date: 2021-07-09
    Description: Aquaculture is the fastest-growing food production sector globally, with production projected to double within the next 15–20 years. Future growth of aquaculture is essential to providing sustainable supplies of fish in national, regional and global fish food systems; creating jobs; and maintaining fish at affordable levels for resource-poor consumers. To ensure that the anticipated growth of aquaculture remains both economically and ecologically sustainable, we need to better understand the likely patterns of growth, as well as the opportunities and challenges, that these trends present. This knowledge will enable us to better prioritize investments that will help ensure the sustainable development of the sector. In Indonesia, WorldFish and partners have applied a unique methodology to evaluate growth trajectories for aquaculture under various scenarios, as well as the opportunities and challenges these represent. Indonesia is currently the fourth largest aquaculture producer globally, and the sector needs to grow to meet future fish demand. The study overlapped economic and environmental models with quantitative and participatory approaches to understand the future of aquaculture in Indonesia. Such analyses, while not definitive, have provided new understanding of the future supply and demand for seafood in Indonesia stretching to 2030. The learning from this research provides a foundation for future interventions in Indonesian fish food systems, as well as a suite of methodologies that can be applied more widely for insightful analyses of aquaculture growth trajectories in other countries or regions.
    Description: Gordon and Betty Moore Foundation
    Description: CGIAR Research Programs on Policies, Institutions and Markets
    Description: CGIAR Research Programs on Livestock and Fish
    Keywords: Aquaculture ; Fisheries ; Aquaculture ; Fisheries ; Research ; Asia ; Indonesia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 16
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  • 5
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    Providing brood stocks of Caspian trout (Salmo trutta caspius) from Mazandaran Rivers and production of one hundred thousand fries (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Caspian trout (Salmo trutta caspius) is one of valuable fishes of the Caspian sea for people living in the Northern coastal area of Iran. Since fish stock and natural resources protection is one the Iranian fisheries research objectives, the most activity on Caspian trout rehabilitation was focused on releasing thousands of smolts in the rivers discharge to Caspian Sea. Catch statistics of this species has declined over last decades thus this study on quality of provided brood stocks and producing fries with suitable quality can help rehabilitation and rearing of this valuable species. Several rivers were considered for providing brooders to keep genetic resources variety of sea stocks. In spawning season 25 (9 male, 16 female) and 30 (5 male, 25 female) brooders were collected from fishermen in Mazandaran rivers and Gyilan coasts provinces respectively. After propagation and larvae rearing, 11500 (10-15 g.) and 50000 (less than 10 g.) juveniles were released in Gyilan and Mazandaran rivers respectively.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Caspian trout ; Salmo trutta caspius ; Brood stocks ; Rehabilitation ; Fisheries ; Species ; Rearing ; Genetic ; Propagation ; Juvenile
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 32pp.
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  • 6
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    The fifth developing plan of Iranian Fisheries Research Institute (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: Accurate scientific and practical plan for achieving the goals of the Islamic Republic of Iran within the framework of Vision development 1404 , is the infrastructure achieving sustainable development of the country . Order to achieve the above mentioned objectives and in order to the comprehensive development plans in the country, Iranian fisheries research organization adjust the fifth developing plan for support of executive related departments in country with mobilization a large number researchers consists of several working groups of ifro affiliated research centers . The fifth developing plan consist of three chapters for report of the forth developing plan and intrudction of research , construction plans and financial support (budjet) for period of 2011-2014 A.C .
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fisheries ; Aquaculture ; IFRO ; Developing plans ; Fisheries research
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 144pp.
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  • 7
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    Assessment of agrobiodiversity resources in the Borotse flood plain, Zambia (2021)
    CGIAR Research Program on Aquatic Agricultural Systems | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/15587 | 115 | 2014-11-19 21:21:48 | 15587 | WorldFish Center
    Details
    Publication Date: 2021-07-08
    Description: Concerns about perceived loss of indigenous materials emerged from multiple stakeholders during consultations to plan and design the CGIAR Research Program on Aquatic Agricultural Systems for the Borotse hub in Zambia’s Western Province. To come to grips with and address the concerns, the AAS Borotse hub program of work included an assessment of agrobiodiversity to inform community-level and program initiatives and actions. The agrobiodiversity assessment comprised three components: key informant and expert surveys complemented by review of grey and published literature, focus group discussions in the communities, and individual household surveys. This working paper reports the findings from assessments of agrobiodiversity resources in the Borotse hub by key informants and local experts working in government ministries, departments and agencies, and non-governmental organizations operating in the communities. This working paper covers the following topics: agriculture in the Borotse flood plain; major agricultural land types in the Borotse flood plain; soils and their uses; production systems; crops, including the seed sector and ex-situ resources; indigenous materials collected from the wild, including non-perennial and perennial plants, aquatic plants, and forest biodiversity; fish resources, including both capture fisheries and aquaculture; livestock resources; dietary diversity; and indigenous and local knowledge on management systems.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Agriculture ; Aquaculture ; Agriculture ; Aquaculture ; Aquatic Agricultural Systems ; Biodiversity ; CGIAR ; Fisheries ; Household surveys ; Livestock ; Surveys ; Zambia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 43
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  • 8
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    Value chain transformation: Taking stock of WorldFish research on value chains and markets (2021)
    WorldFish | Penang, Malaysia
    In:  http://aquaticcommons.org/id/eprint/20949 | 115 | 2016-07-28 09:42:53 | 20949 | WorldFish Center
    Details
    Publication Date: 2021-07-13
    Description: The goal of WorldFish’s research on markets and value chains is to increase the benefits to resource-poor people from fisheries and aquaculture value chains by researching (1) key barriers to resource-poor men, women and other marginalized groups gaining greater benefits from participation in value chains, including barriers related to the availability, affordability and quality of nutrient-rich fish for resource-poor consumers; (2) interventions to overcome those barriers; and (3) mechanisms that are most effective for scaling up of value chain interventions. This paper aims to promote and document learning across WorldFish’s value chain research efforts in Asia and Africa. It has three main objectives: (1) to take stock of WorldFish’s past and ongoing research on value chains; (2) to draw out commonalities and differences between these projects; and (3) to provide a synthesis of some learning that can guide future work.
    Description: CGIAR Research Program on Aquatic Agricultural Systems
    Keywords: Agriculture ; Aquaculture ; Fisheries ; Aquatic Agricultural Systems ; Value chains ; Research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 54
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  • 9
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    Feasibility study on semiintensive polyculture of chainess and Indian carps in I.R.IRAN (Guilan province) (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25352 | 18721 | 2018-09-14 06:57:48 | 25352 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: 15000 juvenile Indian majour carps (Labeo Rohita,Cirhinus merigala, Catla catla) imported (200 ) and transferred to the earthen ponds in Astaneh Fisheries Research Station , In order to assess the viability of rearing under the climatic condition of north part of Iran and also achieve some growth parameters from the larval stage to market size.The fry with 300 mg weight, were released in to 12 ponds. Specimens were separated to tree experimental categories: 1= (30%indian carp and 70% chinees carp) , 2= (50%indian carp and 50% chinees carp) , 3= (70%indian carp and 30% chinees carp) .single chinees carp production were used as control . fishes were fed with artificial food and also with the natural products of the ponds which were enriched with organic fertilizers, after being equally stocked in the ponds .During the experiment, oxygen level ,PH, turbidity, and temperature were measured. Monthly fry samples were taken, for weight and length biometrical analysis and also determination of the weight gain percentage, average daily growth rate, specific growth rate. Results have indicated adaptations and considerable growth in this species, with an increase from the initial weight of 300 mg to an average of 13.5±1.6 mg in 50 days period until the end of November for fingerlings. Also the average weight of growing phase (second year of production ) was 647g for Labeo Rohita ,420 g. for Cirhinus merigala and 734g for Catla catla. The special growth rate (SGR)in Roho was 4.51 %.and 3.9 % for merigal and6.2 % for Catla while for Chinees carps SGR was 4.9, 6.7, 7.6 and 5.8 for silver carp,grass carp, common carp and big head respectively. Results revealed that the Indian majour carps compatibility with the condition in Gilan province was succesfull and the combination of species and optimization of their compatibility were remind for futhre studies.
    Keywords: Aquaculture ; Iran ; Guilan Province ; Astaneh ; Indian carp ; Growth ; Labeo Rohita ; Cirhinus merigala ; Catla catla ; Polyculture ; Juvenile ; Earthen ponds ; Fisheries ; Rearing ; Larval stage ; Fry ; Specimens ; Artificial food ; Fertilizers ; pH ; Turbidity ; Temperature
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 68
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  • 10
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    Biological survey on small pelagic fishes (sardine & anchovy) stocks in coastal waters of Hormuzgan province (Qeshm Island & Bandar Lengeh) with emphasis on sea surface temperature, plankton distribution and chlorophyll-a (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25198 | 18721 | 2018-09-05 16:25:43 | 25198 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: Investigation on small pelagic fishes in the north of the Persian Gulf (Qeshm Island and Bandar Lengeh) coastal waters during October 2006 to September 2008, illustrated that 6 sardine and 2 anchovy species were locally existed. Sind sardinella (Sardinella sindensis) and Buccaneer anchovy (Encrasicholina punctifer) were dominated in this area. The peak of sexual maturity for Sind sardinella and Buccaneer anchovy occurred in spring and summer respectively. Reproduction period for Sind sardinella was from the middle of winter to late spring, and Buccaneer anchovy encompassed reproduction capacity all the year. The female: male ratio was calculated 1:0.7 and 1:0.9 for Sind sardinella, 1:1.27 and 1:1 for Buccaneer anchovy in Qeshm Island and Bandar lengeh sequentially. The mean of absolute fecundity were estimated 16234 and 16168 for Sind sardinella, 1277 and 1141 for Buccaneer anchovy in Qeshm Island and Bandar Lengeh respectively. L_M50 and L_C50 were calculated and the results showed both species mainly caught before length of maturity, and the mass populations have not sufficient opportunity to reproduction. Both species were planktonivore, theirs food prefect mainly consisted of copepods, naplius and bivalves. Vacuity index indicated both spices were semi-voracious appetite fishes. Based on calculated length-weight relationships in S. sindensis and E. punctifer, they have isometric growth. Growth parameters were estimated, the results illustrated that they were growth fast and short live species, which suggested S. sardinella and E. punctifer have 3 and 2 years maximum life span respectively. The recruitment pattern indicated double recruitment peaks per year in both species. Annually, four cohorts were distinguished in Sind sardinella and 3 cohorts in Buccaneer anchovy. Total mortality (Z), natural mortality (M) and fishing mortality (F) were estimated in both species, and the values of exploitation ratio (0.78 & 0.74) in Sind sardinella and (0.72 & 0.41) in Buccaneer anchovy were reasonable for current fishing effort due their short life span. Analysis of the results showed that CPUE in sardine and anchovy affected by reproduction and feeding processes. Results showed significant correlation between sardine CPUE and Sardine GaSI (P〈0.05, r= 0.499), similarly between anchovy CPUE and anchovy GSI (P〈0.05, r=-0.635). Further, significant correlation between sea surface temperature with sardine CPUE (P〈0.05, r=0.493), phytoplankton distribution (P〈0.01, r=0.560), anchovy GSI (P〈0.05, r=0.526), anchovy GaSI (P〈0.05, r=-0.500) and chlorophyll a (P〈0.01, r=0.780). Phytoplankton distribution with sardine GSI (P〈0.05, r=0.453), zooplankton distribution with anchovy GSI (P〈0.05, r=0.671), and chlorophyll with sardine GSI (P〈0.01, r=0.761) have significant correlation.
    Keywords: Fisheries ; Iran ; Persian Gulf ; Qeshm Island ; Bandar Lengeh ; Sardinella sindensis ; Encrasicholina punctifer ; Reproduction ; Feeding ; Growth and mortality ; Catch per unit effort ; Sea surface temperature ; Chlorophyll a ; Sexual maturity ; Plankton ; Naplius ; CPUE ; GSI ; Sardine ; Anchovy ; Coastal waters ; Surface ; Temperature ; Distribution
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 134
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