Pub Date : 2020-01-01DOI: 10.35248/2155-9546.20.11.579
Sahoo Pk, A. Paul, M. Sahoo, S. Pattanayak, P. RajeshKumar, B. Das
During the period 2014-18, a total of 219 cases of fish mortalities were being investigated under a passive surveillance programme. Among different disease incidences parasitic diseases were found to the major contributor accounting for 74.88% cases followed by bacterial diseases of 12.79%, mixed bacterial and parasitic diseases of 10.50% and viral diseases of 1.83%. Among different parasitic cases mixed parasitic infections (37.80%) were found to be premier cause of disease followed by Argulosis (19.51%), Dactylogyrosis (18.90%), Myxosporean infections (12.80%), Trichodinosis and Ichthyophthiriasis (3.04%) and other parasitic infections (4.88%). Among bacterial infections, aeromonads group account for 66.66% diseases besides few emerging pathogens of public health significance. Catla was found to be the most susceptible species and winter season being the most favorable season for occurrence of infectious diseases. Fishes weighing 100-500 g were most vulnerable to disease occurrence. This study generated a comprehensive disease incidence scenario in freshwater aquaculture in eastern India.
{"title":"Incidences of Infectious Diseases in Freshwater Aquaculture Farms of Eastern India: A Passive Surveillance based Study from 2014-2018","authors":"Sahoo Pk, A. Paul, M. Sahoo, S. Pattanayak, P. RajeshKumar, B. Das","doi":"10.35248/2155-9546.20.11.579","DOIUrl":"https://doi.org/10.35248/2155-9546.20.11.579","url":null,"abstract":"During the period 2014-18, a total of 219 cases of fish mortalities were being investigated under a passive surveillance programme. Among different disease incidences parasitic diseases were found to the major contributor accounting for 74.88% cases followed by bacterial diseases of 12.79%, mixed bacterial and parasitic diseases of 10.50% and viral diseases of 1.83%. Among different parasitic cases mixed parasitic infections (37.80%) were found to be premier cause of disease followed by Argulosis (19.51%), Dactylogyrosis (18.90%), Myxosporean infections (12.80%), Trichodinosis and Ichthyophthiriasis (3.04%) and other parasitic infections (4.88%). Among bacterial infections, aeromonads group account for 66.66% diseases besides few emerging pathogens of public health significance. Catla was found to be the most susceptible species and winter season being the most favorable season for occurrence of infectious diseases. Fishes weighing 100-500 g were most vulnerable to disease occurrence. This study generated a comprehensive disease incidence scenario in freshwater aquaculture in eastern India.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"18 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78316564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.35248/2155-9546.19.10.597
E. Setyaningrum, E. Masithah, M. Yuniartik, A. T. K. Dewi, M. P. Nugrahani
Litopenaeus Vannameiei is one type of shrimp that is often cultivated in Indonesia. The culture system model consists of extensive (traditional) and intensive system. This study aims to determine the comparison of plankton abundance, water conditions, organisms growth performance of Litopenaeus Vannameiei on intensive and extensive aquaculture systems in the waters of Banyuwangi Regency. The parameters measured are physical and chemical parameters including temperature, brightness, pH, dissolved oxygen, salinity, ammonia, alkalinity, type and abundance of plankton. The analysis method is plankton abundance, productivity analysis, SR, FCR and vaname shrimp growth. The results showed that 4 classes of plankton in intensive pond waters were identified namely Chlorophyta, Cyanophyta and Chrysophyta phytoplankton, while Protozoa class zooplankton. In traditional ponds not much different, there is only Crpytophyta class as an additional identification result. Plankton abundance in intensive ponds reaches 27,595 individuals per liter, while for extensive ponds plankton abundance reaches 37,641 individuals per liter. The survival rate of shrimp in intensive ponds is around 86% while extensive ponds are 67%. FCR value of extensive ponds 1.02, while intensive ponds FCR value of 1.17. The average final weight of shrimp on intensive ponds was 11.76 g/head and on extensive ponds which was 8.33 g/head.
{"title":"Comparison of Plankton Abundance, Water Condition, Organism Growth Performance of Vaname Shrimp (Litopenaeus Vannameiei) on Intensive and Extensive Culture Systems in Banyuwangi District","authors":"E. Setyaningrum, E. Masithah, M. Yuniartik, A. T. K. Dewi, M. P. Nugrahani","doi":"10.35248/2155-9546.19.10.597","DOIUrl":"https://doi.org/10.35248/2155-9546.19.10.597","url":null,"abstract":"Litopenaeus Vannameiei is one type of shrimp that is often cultivated in Indonesia. The culture system model consists of extensive (traditional) and intensive system. This study aims to determine the comparison of plankton abundance, water conditions, organisms growth performance of Litopenaeus Vannameiei on intensive and extensive aquaculture systems in the waters of Banyuwangi Regency. The parameters measured are physical and chemical parameters including temperature, brightness, pH, dissolved oxygen, salinity, ammonia, alkalinity, type and abundance of plankton. The analysis method is plankton abundance, productivity analysis, SR, FCR and vaname shrimp growth. The results showed that 4 classes of plankton in intensive pond waters were identified namely Chlorophyta, Cyanophyta and Chrysophyta phytoplankton, while Protozoa class zooplankton. In traditional ponds not much different, there is only Crpytophyta class as an additional identification result. Plankton abundance in intensive ponds reaches 27,595 individuals per liter, while for extensive ponds plankton abundance reaches 37,641 individuals per liter. The survival rate of shrimp in intensive ponds is around 86% while extensive ponds are 67%. FCR value of extensive ponds 1.02, while intensive ponds FCR value of 1.17. The average final weight of shrimp on intensive ponds was 11.76 g/head and on extensive ponds which was 8.33 g/head.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"411 ","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91445709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.35248/2155-9546.20.10.588
K. Shachi, Sanjeev Kumar, N. Dubey, U. Dubey
Plankton diversity is an important criteria for assessment of the water quality. In this study we tried to assess the plankton species diversity in two ponds of LNMU, Campus Darbhanga viz. Anandbag pond and Manokamna Temple pond. Plankton diversity of both ponds were recorded from January 2018 to June 2018. A total three classes of phytoplankton and Zooplankton were recorded which contain 18 phytoplankton species and 14 Zooplankton species from both ponds. Out of which 9 species of phytoplankton and 11 species of Zooplankton were common in both ponds. Anandbag pond alone had 12 species of phytoplankton and 12 species of Zooplankton. Manokamna Temple pond had 15 species of phytoplankton and 13 species of zooplankton. Manokamna Temple pond was rich in phytoplankton as well as Zooplankton. A pivotal relationship was observed between phytoplankton and zooplankton diversity.
{"title":"Qualitative Plankton Diversity of Two Carp Culture Ageing Ponds of LNMU Campus Darbhanga, India","authors":"K. Shachi, Sanjeev Kumar, N. Dubey, U. Dubey","doi":"10.35248/2155-9546.20.10.588","DOIUrl":"https://doi.org/10.35248/2155-9546.20.10.588","url":null,"abstract":"Plankton diversity is an important criteria for assessment of the water quality. In this study we tried to assess the plankton species diversity in two ponds of LNMU, Campus Darbhanga viz. Anandbag pond and Manokamna Temple pond. Plankton diversity of both ponds were recorded from January 2018 to June 2018. A total three classes of phytoplankton and Zooplankton were recorded which contain 18 phytoplankton species and 14 Zooplankton species from both ponds. Out of which 9 species of phytoplankton and 11 species of Zooplankton were common in both ponds. Anandbag pond alone had 12 species of phytoplankton and 12 species of Zooplankton. Manokamna Temple pond had 15 species of phytoplankton and 13 species of zooplankton. Manokamna Temple pond was rich in phytoplankton as well as Zooplankton. A pivotal relationship was observed between phytoplankton and zooplankton diversity.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"43 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77739167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.35248/2155-9546.19.10.592
Ahmed M. M. Heneash, Ahmed E. Alprol
The objective of this study assess the effects of physico-chemical parameters and dietary active commercial wood charcoal (CWC) levels on the zooplankton standing crop in addition to growth and biochemical of red tilapias in fifteen fish cement ponds for period an eight weeks feeding trial during 2019. The results declared that, water temperature, pH and salinity didn´t show any major differences among wood charcoal treatments when measured inside fish ponds, while dissolved oxygen, ammonia, moisture, ash and total lipid are significantly (P 0.05) could be detected among fish groups that received dietary charcoal in feeds. Furthermore, the effect of heavy metals decrease with increase of activated carbon at fed fish, leading to protect cultured fish. Soon after the juvenile red tilapias stocking, rotifers, Cladocera and rare groups replaced Copepoda, which constituted more than 80% of total zooplankton community. Diversity Index classified the pond water as being among moderately and heavily polluted. The results displayed that 30-40 g/kg dietary CWC in T3 and T4 are a suitable level to improve water quality parameter of the fish farm and improve growth percentage (S%) of red tilapia with percentage higher than 95%.
{"title":"Monitoring of Water Quality and Zooplankton Community in Presence of Different Dietary Levels of Commercial Wood Charcoal of Red Tilapia","authors":"Ahmed M. M. Heneash, Ahmed E. Alprol","doi":"10.35248/2155-9546.19.10.592","DOIUrl":"https://doi.org/10.35248/2155-9546.19.10.592","url":null,"abstract":"The objective of this study assess the effects of physico-chemical parameters and dietary active commercial wood charcoal (CWC) levels on the zooplankton standing crop in addition to growth and biochemical of red tilapias in fifteen fish cement ponds for period an eight weeks feeding trial during 2019. The results declared that, water temperature, pH and salinity didn´t show any major differences among wood charcoal treatments when measured inside fish ponds, while dissolved oxygen, ammonia, moisture, ash and total lipid are significantly (P 0.05) could be detected among fish groups that received dietary charcoal in feeds. Furthermore, the effect of heavy metals decrease with increase of activated carbon at fed fish, leading to protect cultured fish. Soon after the juvenile red tilapias stocking, rotifers, Cladocera and rare groups replaced Copepoda, which constituted more than 80% of total zooplankton community. Diversity Index classified the pond water as being among moderately and heavily polluted. The results displayed that 30-40 g/kg dietary CWC in T3 and T4 are a suitable level to improve water quality parameter of the fish farm and improve growth percentage (S%) of red tilapia with percentage higher than 95%.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"57 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83417149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.35248/2155-9546.19.10.584
Oliver J. Hasimuna, Sahya Maulu, Joseph Mph
Aquaculture is an important industry in Zambia which is contributing to economic development, food security and employment in the country. Significant increase in aquaculture production has been recorded recently, although its full potential is still far from being realized. Because of this, efforts are being made by the Zambian government to make the industry a more viable venture to expand its production. As these efforts continue to make a positive impact, and aquaculture production continue to increase, diseases of aquatic animals are likely to emerge and threaten the sustainability of the industry. Here, we review the status and challenges associated with aquaculture health management practices in Zambia as well as proposed biosecurity measures farmers may adopt to minimize the likelihood of fish disease outbreaks. The paper has established that despite the country having been spared from aquaculture diseases so far, there is lack of appropriate measures to prevent and control disease outbreaks. Overall, aquaculture producers in Zambia may benefit significantly from adopting available biosecurity measures to prevent disease outbreaks in their enterprises.
{"title":"Aquaculture Health Management Practices in Zambia: Status, Challenges and Proposed Biosecurity Measures","authors":"Oliver J. Hasimuna, Sahya Maulu, Joseph Mph","doi":"10.35248/2155-9546.19.10.584","DOIUrl":"https://doi.org/10.35248/2155-9546.19.10.584","url":null,"abstract":"Aquaculture is an important industry in Zambia which is contributing to economic development, food security and employment in the country. Significant increase in aquaculture production has been recorded recently, although its full potential is still far from being realized. Because of this, efforts are being made by the Zambian government to make the industry a more viable venture to expand its production. As these efforts continue to make a positive impact, and aquaculture production continue to increase, diseases of aquatic animals are likely to emerge and threaten the sustainability of the industry. Here, we review the status and challenges associated with aquaculture health management practices in Zambia as well as proposed biosecurity measures farmers may adopt to minimize the likelihood of fish disease outbreaks. The paper has established that despite the country having been spared from aquaculture diseases so far, there is lack of appropriate measures to prevent and control disease outbreaks. Overall, aquaculture producers in Zambia may benefit significantly from adopting available biosecurity measures to prevent disease outbreaks in their enterprises.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"10 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81679397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-29DOI: 10.4172/2155-9546.1000567
Sahya Maulu, B. P. Munganga, Oliver J. Hasimuna, L. Haambiya, Bornwell Seemani
The application of science and technology developments in aquaculture is very crucial for the sustainable development of the industry. This paper provides an overview of the current developments in science and technology used in Zambia’s aquaculture industry. Various developments particularly in aquacultural species and culture models, aquaculture production systems, fish feeds and nutrition, water environmental management, and fish health and disease management have been discussed. While some breakthroughs in science and technology have been presented, the review has indicated that the country’s aquaculture industry is still lagging behind in some critical areas as the majority of producers are still using traditional technologies which have made it difficult for them to make significant contributions to fish production. As a result of this lag and other reasons, the country has witnessed an unprecedented importation of fish to meet the deficit and the ever-increasing demand. Therefore, efforts to accelerate and sustain aquaculture industrial development in Zambia must address such areas of science and technology as fish genetic breeding and improvements, fish health and disease management, sustainable feeds and nutrition, production systems, and water environmental management
{"title":"A Review of the Science and Technology Developments in Zambiaandrsquo;s Aquaculture Industry","authors":"Sahya Maulu, B. P. Munganga, Oliver J. Hasimuna, L. Haambiya, Bornwell Seemani","doi":"10.4172/2155-9546.1000567","DOIUrl":"https://doi.org/10.4172/2155-9546.1000567","url":null,"abstract":"The application of science and technology developments in aquaculture is very crucial for the sustainable development of the industry. This paper provides an overview of the current developments in science and technology used in Zambia’s aquaculture industry. Various developments particularly in aquacultural species and culture models, aquaculture production systems, fish feeds and nutrition, water environmental management, and fish health and disease management have been discussed. While some breakthroughs in science and technology have been presented, the review has indicated that the country’s aquaculture industry is still lagging behind in some critical areas as the majority of producers are still using traditional technologies which have made it difficult for them to make significant contributions to fish production. As a result of this lag and other reasons, the country has witnessed an unprecedented importation of fish to meet the deficit and the ever-increasing demand. Therefore, efforts to accelerate and sustain aquaculture industrial development in Zambia must address such areas of science and technology as fish genetic breeding and improvements, fish health and disease management, sustainable feeds and nutrition, production systems, and water environmental management","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"14 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74757897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-27DOI: 10.4172/2155-9546.1000566
Siti Zaharah Imran, L. Wei
Essential amino acids are important in aquatic animal growth rate. Hence, this study was carried out to find out the enhancement of five selected essential amino acid namely tryptophan, lysine, methionine, valine and isoleucine by carbon concentration and fermentation period in soy pulp for aquaculture uses. In the present study, fermentation medium containing (soy pulp, 95.5%; yeast extract, 2%; ammonium sulphate, 2%; 0.5% glucose v/v) were subjected to solid state fermentation for fermentation period screening (0 day, 4 days, 8 days, and 12 days) inoculated with Bacillus cereus (MH027625). To acknowledge, the soy pulp, yeast extract and ammonium sulphate is in powder form. Out of four fermentation periods, 8 days of fermentation was the best period of fermentation for maximum total essential amino acid enhancement (42.9 ± 19.5 gL-1). This medium was further supplemented with different type of carbon sources (glucose, sucrose, and molasses) at 0.5% v/v to increase total enhancement of essential amino acid. The best carbon source (sucrose) was then further supplemented with different concentration (0%, 2%, 4%, 6%, 8%, and 10% v/v) to increase total enhancement of essential amino acid. Finally, total essential amino acids were successfully enhanced with 43.1 ± 1.63 gL-1 of production after 8 days of fermentation supplemented with 2% sucrose.
{"title":"Selected Essential Amino Acid Enhancement by Bacillus cereus from Solid State Fermentation of Soy Pulp Through Carbon Concentration and Fermentation Period","authors":"Siti Zaharah Imran, L. Wei","doi":"10.4172/2155-9546.1000566","DOIUrl":"https://doi.org/10.4172/2155-9546.1000566","url":null,"abstract":"Essential amino acids are important in aquatic animal growth rate. Hence, this study was carried out to find out the enhancement of five selected essential amino acid namely tryptophan, lysine, methionine, valine and isoleucine by carbon concentration and fermentation period in soy pulp for aquaculture uses. In the present study, fermentation medium containing (soy pulp, 95.5%; yeast extract, 2%; ammonium sulphate, 2%; 0.5% glucose v/v) were subjected to solid state fermentation for fermentation period screening (0 day, 4 days, 8 days, and 12 days) inoculated with Bacillus cereus (MH027625). To acknowledge, the soy pulp, yeast extract and ammonium sulphate is in powder form. Out of four fermentation periods, 8 days of fermentation was the best period of fermentation for maximum total essential amino acid enhancement (42.9 ± 19.5 gL-1). This medium was further supplemented with different type of carbon sources (glucose, sucrose, and molasses) at 0.5% v/v to increase total enhancement of essential amino acid. The best carbon source (sucrose) was then further supplemented with different concentration (0%, 2%, 4%, 6%, 8%, and 10% v/v) to increase total enhancement of essential amino acid. Finally, total essential amino acids were successfully enhanced with 43.1 ± 1.63 gL-1 of production after 8 days of fermentation supplemented with 2% sucrose.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"26 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2019-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81903924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-20DOI: 10.4172/2155-9546.1000565
Orire Am, Emine Gi
The research determined the effects of crude protein levels and selected natural binders (Cassava, Corn, Rice and Yam) on feed floatability. Eight (8) diets each were prepared at 30%, 35%, 40%, 45% crude protein level. Four parts each of the diets were incorporated with raw and gelatinized binders at appropriate inclusion levels. The results obtained were significantly different (p<0.05) for inclusion levels of crude protein and pellets floatability. Cassava binder gave the best floatability percentage of 100% for all crude protein levels which floated for 60 minutes while the raw binder incorporated pellets performed poorly except for yam binder that gave 70% floatation rate at 40% crude protein levels. Thus, while considering the right polysacharides as binder for on-farm floating feed, Cassava binder is recommended.
{"title":"Effects of Crude Protein Levels and Binders on Feed Buoyancy","authors":"Orire Am, Emine Gi","doi":"10.4172/2155-9546.1000565","DOIUrl":"https://doi.org/10.4172/2155-9546.1000565","url":null,"abstract":"The research determined the effects of crude protein levels and selected natural binders (Cassava, Corn, Rice and Yam) on feed floatability. Eight (8) diets each were prepared at 30%, 35%, 40%, 45% crude protein level. Four parts each of the diets were incorporated with raw and gelatinized binders at appropriate inclusion levels. The results obtained were significantly different (p<0.05) for inclusion levels of crude protein and pellets floatability. Cassava binder gave the best floatability percentage of 100% for all crude protein levels which floated for 60 minutes while the raw binder incorporated pellets performed poorly except for yam binder that gave 70% floatation rate at 40% crude protein levels. Thus, while considering the right polysacharides as binder for on-farm floating feed, Cassava binder is recommended.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80527578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.35248/2155-9546.19.10.574
R. Ej, A. Kalla
One of the main challenges faced by pearling researchers in Fiji is lack of documentation on the history and significance of pearl farming in Fiji. Trying to access this information from different sources becomes a confusing task for young researchers. This review will start by introducing factual information on history and significance of pearls from articles of varied sources.
{"title":"Pinctada margaritifera Farming in Fiji","authors":"R. Ej, A. Kalla","doi":"10.35248/2155-9546.19.10.574","DOIUrl":"https://doi.org/10.35248/2155-9546.19.10.574","url":null,"abstract":"One of the main challenges faced by pearling researchers in Fiji is lack of documentation on the history and significance of pearl farming in Fiji. Trying to access this information from different sources becomes a confusing task for young researchers. This review will start by introducing factual information on history and significance of pearls from articles of varied sources.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"20 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79071792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.4172/2155-9546.1000562
Em Vo Thi Thu, Mizanur Rahman, War War Phoo, Chang-hoon Kim
Two experiments were conducted to investigate the effects of salinity on growth and survival of the polychaete rockworm Marphysa sanguinea (Montagu 1813) at the juveniles and adults stages under controlled laboratory conditions. The effects of different salinities 15, 20, 25, 30 and 35 psu on the survival and growth rates of M. sanguinea juveniles and adults was examined in two separate experiments in a semi-recirculating system. This study was examined over a three-month period in the Fisheries Science and Technology Center of Pukyong National University, South Korea. Experiments were conducted in plastic boxes of sizes L 40 cm × W 24 cm × H 28 cm has filled with sediment mixed with oyster shells 70% (5 mm) and sand 30% (2 mm). To identify the growth and survival rate monthly and end of the 3rd month, data was collected for juveniles and adults. In both experiments, the highest survival rate has found at 25 psu and lowest in 35 psu salinity. The juveniles and adults’ polychaetes have shown the highest weight gain in 30 psu salinity. These results have obtained that M. sanguinea proved to be an excellent candidate for aquaculture under a suitable salinity range of 25-30 psu. The salinity showed a significant effect not only on the growth and survival rate, but also on the biochemical components of M. sanguinea adults. These results of optimum salinity ranges will support for mass production of this rockworm which is highly demands in the world for sport fishing and live food for aquaculture.
在控制的实验室条件下，研究了盐度对多毛岩虫Marphysa sanguinea (Montagu 1813)幼体和成体生长和存活的影响。在半循环水系统中研究了不同盐度(15、20、25、30和35 psu)对血马幼鱼和成鱼存活率和生长率的影响。这项研究在韩国釜京国立大学渔业科学技术中心进行了为期三个月的研究。实验在尺寸为L 40 cm × W 24 cm × H 28 cm的塑料盒中进行，其中填入70% (5 mm)牡蛎壳和30% (2 mm)沙子的沉积物。为了确定每月和第3个月末的生长和存活率，收集了幼鱼和成鱼的数据。在这两个实验中，25 psu时存活率最高，35 psu时存活率最低。幼鱼和成鱼的多毛体在30 psu的盐度下体重增加最多。这些结果表明，在25-30 psu的适宜盐度范围内，血马是养殖的优秀候选者。盐度不仅对血马成虫的生长和存活率有显著影响，而且对血马成虫的生化成分也有显著影响。这些最佳盐度范围的结果将支持这种岩虫的大规模生产，这种岩虫在世界上的钓鱼活动和水产养殖的活食中需求量很大。
{"title":"Salinity Effects on Growth and Survival of the Polychaete Rockworm Marphysa sanguinea (Montagu, 1813) Juveniles and Adults","authors":"Em Vo Thi Thu, Mizanur Rahman, War War Phoo, Chang-hoon Kim","doi":"10.4172/2155-9546.1000562","DOIUrl":"https://doi.org/10.4172/2155-9546.1000562","url":null,"abstract":"Two experiments were conducted to investigate the effects of salinity on growth and survival of the polychaete rockworm Marphysa sanguinea (Montagu 1813) at the juveniles and adults stages under controlled laboratory conditions. The effects of different salinities 15, 20, 25, 30 and 35 psu on the survival and growth rates of M. sanguinea juveniles and adults was examined in two separate experiments in a semi-recirculating system. This study was examined over a three-month period in the Fisheries Science and Technology Center of Pukyong National University, South Korea. Experiments were conducted in plastic boxes of sizes L 40 cm × W 24 cm × H 28 cm has filled with sediment mixed with oyster shells 70% (5 mm) and sand 30% (2 mm). To identify the growth and survival rate monthly and end of the 3rd month, data was collected for juveniles and adults. In both experiments, the highest survival rate has found at 25 psu and lowest in 35 psu salinity. The juveniles and adults’ polychaetes have shown the highest weight gain in 30 psu salinity. These results have obtained that M. sanguinea proved to be an excellent candidate for aquaculture under a suitable salinity range of 25-30 psu. The salinity showed a significant effect not only on the growth and survival rate, but also on the biochemical components of M. sanguinea adults. These results of optimum salinity ranges will support for mass production of this rockworm which is highly demands in the world for sport fishing and live food for aquaculture.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"17 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90301753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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