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  • 1
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    Epidemiological study on some environmental and management parameters affecting on WSD occurrence in Fenneropenaeus indicus and Penaeus vannamei (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: For the first time white spot disease (WSD) was reported in shrimp farms of khoozestan province, in southwest of IRAN in 2002. Then in 2005 the neighbor province, boushehr, was contaminated. In 2008 WSD outbreak reported in sistan-bloochestan province in southeast of Iran. In 2015 all of southern shrimp farms of country except Hormozgan, the middle southern province, which has remained free of WSD, are being contaminated. White Spot disease suspended shrimp culture in thousands hectares of shrimp farms. Considering that white spot disease has not been observed in Hormozgan province yet, the question is; to what extent environmental and management factors participated in preventing WSD outbreak or cause WSD outbreak. In this study (20102012), the effects of environmental factors and management, stressors that decrease immune system function of shrimp are discussed. In addition, the role of pathogen as the main factor of outbreak is discussed. The goal of this study is to define environmental parameters and management practices associates with outbreak of white spot disease in affected provinces and discover reasons of being Hormozgan province free of this disease. In this study the role of the local environmental factors and management practice stressors in susceptibility to WSD was determine. Both the effects of environmental factors in water of ponds including total ammonia, nitrogen, dissolved oxygen, pH, salinity, transparency, and temperature and management issues related to biosecurity are studied. There were overlaps on physical and chemical parameter values obtained in clear areas with contaminated areas .Results of the data analysis suggest that lack of association with WSD incidence was 7 times greater than WSD incidence despite of disease outbreak in sistan-bloochestan province, so other sources of white spot disease virus incidence was suspected in affected areas. Histopathological examinations and polymerase chain reaction (PCR) tests during project performance did not reveal white spot disease virus evidences in post larvae examined from khoozestan province stocked in farms but disease outbreak was happened in that farms , so we suspected to management practice include feed , pond preparation and carrier of disease . Recorded values of temperature and salinity in some months during inspection in Hormozgan province specified stressful condition that may lead to WSD outbreak, however the disease did not appear. Therefore the hypothesis that the water physical and chemical conditions are reasons to prevent disease outbreak in Hormozgan province is being rejected. The policy of Hormozgan’s fishery authorities, to replaced Fenneropenaeus indicus with specific pathogen free Litopenaeus vannamei, that is more resistant to some of diseases, before incidence of WSD in farms and to before being endemic in the Hormozgan province, made an advantage compare to affected southern provinces that introduced Litopenaeus vannamei after WSD prevalence to their farms. However it does not guarantee to maintain current trend of being Hormozgan province farms free of white spot disease. Therefore establishing the principals of biosecurity are strongly emphasized. Strategies taken by the proficient authorities in preparation of SPF shrimp broodstock can be the most important factor in preventing WSD. Regarding biosecurity principals purchased feed must be free of shrimp head powder. Construction the new shrimp farms should be as far as it could be away from contaminated areas.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Environmental ; Physical ; Chemical ; Epidemiological study ; WSD ; Fenneropenaeus indicus ; Penaeus vannamei ; Shrimp ; White Spot Disease ; Temperature ; Salinity ; PCR ; Polymerase Chain Reaction ; Ammonia ; Nitrogen ; Dissolved oxygen ; pH ; Transparency
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 468pp.
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  • 2
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    Environmental risk assessment of the activity of specific pathogen free shrimp production centers (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    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.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Environmental risk assessment ; Shrimp ; Litopenaeus vannamei ; Specific pathogen free
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 80pp.
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  • 3
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    Epidemiological study on some environmental and management parameters affecting on WSD occurrence in Fenneropenaeus indicus and Penaeus vannamei (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25652 | 18721 | 2018-10-08 08:43:54 | 25652 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: For the first time white spot disease (WSD) was reported in shrimp farms of khoozestan province, in southwest of IRAN in 2002. Then in 2005 the neighbor province, boushehr, was contaminated. In 2008 WSD outbreak reported in sistan-bloochestan province in southeast of Iran. In 2015 all of southern shrimp farms of country except Hormozgan, the middle southern province, which has remained free of WSD, are being contaminated. White Spot disease suspended shrimp culture in thousands hectares of shrimp farms. Considering that white spot disease has not been observed in Hormozgan province yet, the question is; to what extent environmental and management factors participated in preventing WSD outbreak or cause WSD outbreak. In this study (20102012), the effects of environmental factors and management, stressors that decrease immune system function of shrimp are discussed. In addition, the role of pathogen as the main factor of outbreak is discussed. The goal of this study is to define environmental parameters and management practices associates with outbreak of white spot disease in affected provinces and discover reasons of being Hormozgan province free of this disease. In this study the role of the local environmental factors and management practice stressors in susceptibility to WSD was determine. Both the effects of environmental factors in water of ponds including total ammonia, nitrogen, dissolved oxygen, pH, salinity, transparency, and temperature and management issues related to biosecurity are studied. There were overlaps on physical and chemical parameter values obtained in clear areas with contaminated areas .Results of the data analysis suggest that lack of association with WSD incidence was 7 times greater than WSD incidence despite of disease outbreak in sistan-bloochestan province, so other sources of white spot disease virus incidence was suspected in affected areas. Histopathological examinations and polymerase chain reaction (PCR) tests during project performance did not reveal white spot disease virus evidences in post larvae examined from khoozestan province stocked in farms but disease outbreak was happened in that farms , so we suspected to management practice include feed , pond preparation and carrier of disease. Recorded values of temperature and salinity in some months during inspection in Hormozgan province specified stressful condition that may lead to WSD outbreak, however the disease did not appear. Therefore the hypothesis that the water physical and chemical conditions are reasons to prevent disease outbreak in Hormozgan province is being rejected. The policy of Hormozgan’s fishery authorities, to replaced Fenneropenaeus indicus with specific pathogen free Litopenaeus vannamei, that is more resistant to some of diseases, before incidence of WSD in farms and to before being endemic in the Hormozgan province, made an advantage compare to affected southern provinces that introduced Litopenaeus vannamei after WSD prevalence to their farms. However it does not guarantee to maintain current trend of being Hormozgan province farms free of white spot disease. Therefore establishing the principals of biosecurity are strongly emphasized. Strategies taken by the proficient authorities in preparation of SPF shrimp broodstock can be the most important factor in preventing WSD. Regarding biosecurity principals purchased feed must be free of shrimp head powder. Construction the new shrimp farms should be as far as it could be away from contaminated areas.
    Keywords: Aquaculture ; Ecology ; Health ; Iran ; Khouzestan Province ; Boushehr province ; Sistan and Balochestan province ; Hormozgan Province ; Epidemiological study ; WSD ; Fenneropenaeus indicus ; Penaeus vannamei ; Shrimp ; White Spot Disease ; Temperature ; Salinity ; PCR ; Polymerase Chain Reaction ; Ammonia ; Nitrogen ; Dissolved oxygen ; pH ; Transparency
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 468
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  • 4
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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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  • 5
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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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  • 6
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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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  • 7
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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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  • 8
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    Investigstion on Effect prepared vaccine by Y-ray on production rate and resistance to white spot disease in Shrimp Litopenaeus vannamei (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: White Spot Disease (WSD) is a important disease due to economic impacts in shrimp industries. Spreading of this disease in shrimp farms can caused a 100% mortality during 3-10 days. Therefore control of this disease is a strategy in shrimp industry. Vaccination is a way to control of WSD. In several years ago during a project several type vaccine of this virus by association of Atomic Energy Organization is produced that among of them the virus inactivated by GAMA radiation had better results in laboratory. To test of this vaccine in field, a research pilot was carried out. Initially 20000 shrimp napliies were obtained from one of commercial hatchery in Bushehr province, then devided to two groups vaccinated and unvaccinated. The vaccinated group also devided . 26and PL12 , group B vaccinated at PL15and PL 5to two groups, group A that vaccinated at postlarva e (PL) Rrsults showed that difference of growth performance and survival rate between vaccinated and unvaccinated without challenge with WSV after 80 days is not significantly (P〈0.05). but survival rate in vaccinated groups after challenge with WSV was significantly (P〈0.05) further the unvaccinated group. Also the results showed survival rate of group B after challenge with WSV is better than group A and this difference was significantly (P〈0.05). this study showed vaccination of shrimp postlarvae with GAMA radiation vaccine can control of shrimp mortality in incidence of WSD in farms.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Litopenaeus vannamei ; WSSV ; Gamma radiation ; Vaccination ; Y-ray ; White spot disease ; Shrimp ; Nauplii ; Growth ; Survival rate ; Mortality
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 65pp.
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  • 9
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    Development gene data bank of cultured shrimp species in Iran (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: DNA barcode is a short, standard well known sequence of cytochrome oxidase І gene. By using this DNA sequence can be realized that each animal, plant or fungus belongs to which species. in this research, samples were collected from imported cultured shrimp Litopenaeus vannamei and and 6 Persian Gulf and Oman Sea shrimp species which classified based on traditional systematically as: Penaeus semisulcatus, Fenneropenaeus merguiensis, Metapenaeus affinis, Parapenaeopsis Stylifera and Fenneropenaeus indicus. After examination of DNA barcode sequence, molecular and bioinformatics operations of each sequence in the Consortium for the Barcode of Life (CBOL) and National Center for Biotechnology Information (NCBI), phylogenetic analysis of each sample was determined and similarity of each sample with NCBI and CBOL database was checked and the closest species to each sample were specified. According to the results different samples of L. vannamei, . banded P.semisulcatus, F. merguiensis and F. indicus have more than 97% similarity to the same species of other countries. non banded P.semisulcatus had 80.07% similarity to banded P.semisulcatus, M. affinis samples had 90.3% similarity to Metapenaeus ensis and Parap. Stylifera had 93.44% similarity to Parapenaeopsis coromandelica in the CBOL. This funding confirmed the need for further investigation and possible announcement of new species.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: DNA barcode ; Shrimp ; Litopenaeus vannamei ; Penaeus semisulcatus ; Fenneropenaeus merguiensis ; Metapenaeus affinis ; Parapenaeopsis stylifera ; Fenneropenaeus indicus
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 72pp.
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  • 10
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    Bacteria effects (probiotics) on growth and survival rate and resistance of shrimp during propagation stages (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This project investigates bacteria effects as probiotics on growth and survival rate and resistance of shrimp during propagation stages. Bacterial flora were extracted from seawater , water of cultured farms , shrimp cultured and sludge from private propagation farms different bacteria such as Vibrio alginolyticus(serotype1-4) Vibrio splendidus I , Vibrio fluvialis ,Vibrio anguillarum ,Vibrio costicul, Vibrio vulnificus,Vibrio nereis,Vibrio camplbelli,Vibrio natriegens,Vibrio proteolyticus, Vibrio plegius ,Vibrio fischeri,Aeromonas hydrophila, Aeromonas schuberti,Aeromonas salmonisida, Aeromonas veronii , Pseudomonas pseudoalcaligenes, Pseudomonas chloraphis, Alcaligenes faecalis, Bacillus megaterium, Bacillus pumilus, Bacillus circulans, Bacillus cereus, Bacillus subtilis, Bacillus licheniformis, Lactobacillus case, Lactobacillus bulgaricus, Lactobacillus delbrukii, Lactobacillus fermentum, Lactobacillus leichmanii, Lactobacillus plantarum, Lactobacillus rhamnosus, Lactobacillus acidophilus, Lactobacillus lactis, Pediococcus acidilactici were isolated , identified and lyophilized.These bacteria in different experiments were used on shrimp life cycle stages and live food such as Chaetoceros , Skeletonema and Tetraselmis algae. Some serotypes of one bacterial species showed various reactions in media and experiment probiotics. Vibrio alginolyticus(serotype1) with 107 cells/ml can increase Tetraselmis sp production during 6 days to 71% compared to the control experiment without bacteria. Also Vibrio alginolyticus(serotype4) with 105 cells/ml can increase Tetraselmis spp production during 6 days to 389% more than control. Vibrio splendidus could increase 23% shrimp fork length in postlarvae 3 compared control. Vibrio alginolyticus+ Vibrio fischeri can increase survival , fork lenght and body weight of green tiger shrimp postlarvae significantly(P〈.05).
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Bacteria ; Shrimp ; Algae ; Probiotic ; Vibrio alginolyticus ; Vibrio splendidus ; Vibrio fluvialis ; Vibrio anguillarum ; Vibrio costicul ; Growth ; Survival rate ; Resistance
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 85pp.
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