Pub Date : 2017-08-31DOI: 10.4172/2155-9546.1000501
Natalie Redman, C. Good, B. Vinci
The accumulation of bacterial biofilms and consequent clogging of screens, pipes, and heat exchanger equipment is problematic for water supply systems contaminated with iron bacteria and other slime forming bacteria. Despite the ubiquitous threat posed by iron bacteria contamination in groundwater sources, limited research has focused on physical treatments to address this issue. We sought to investigate the effectiveness of ultraviolet (UV) irradiation on inactivating iron bacteria and slime forming bacteria in a fish hatchery supply water known to have issues with bacterial biofilms. Biological activity reaction tests (BART) were used to analyze the presence or absence of iron related and slime forming bacteria in raw well water at UV dosages of 0 mJ/cm2, 15 mJ/cm2, 30 mJ/cm2, 45 mJ/cm2 and 60 mJ/cm2. Results suggest that UV treatment decreases iron bacteria survival, with the highest percent of non-reactive BARTTM test vials resulting from 45 mJ/cm2 and 60 mJ/cm2 UV exposure; however, data regarding UV inactivation of slime forming bacteria were inconclusive. These initial ‘proof of concept’ findings can be used to design pilot UV water treatment systems for fish hatcheries known to have iron bacteria problems. Pilot treatment system testing can then provide the necessary results to ensure that UV treatment is effective against site-specific iron bacteria populations before full-scale treatment systems are implemented.
{"title":"Assessing the Utility of Ultraviolet Irradiation to Reduce Bacterial Biofilms in Fish Hatchery Well Water Supplies","authors":"Natalie Redman, C. Good, B. Vinci","doi":"10.4172/2155-9546.1000501","DOIUrl":"https://doi.org/10.4172/2155-9546.1000501","url":null,"abstract":"The accumulation of bacterial biofilms and consequent clogging of screens, pipes, and heat exchanger equipment is problematic for water supply systems contaminated with iron bacteria and other slime forming bacteria. Despite the ubiquitous threat posed by iron bacteria contamination in groundwater sources, limited research has focused on physical treatments to address this issue. We sought to investigate the effectiveness of ultraviolet (UV) irradiation on inactivating iron bacteria and slime forming bacteria in a fish hatchery supply water known to have issues with bacterial biofilms. Biological activity reaction tests (BART) were used to analyze the presence or absence of iron related and slime forming bacteria in raw well water at UV dosages of 0 mJ/cm2, 15 mJ/cm2, 30 mJ/cm2, 45 mJ/cm2 and 60 mJ/cm2. Results suggest that UV treatment decreases iron bacteria survival, with the highest percent of non-reactive BARTTM test vials resulting from 45 mJ/cm2 and 60 mJ/cm2 UV exposure; however, data regarding UV inactivation of slime forming bacteria were inconclusive. These initial ‘proof of concept’ findings can be used to design pilot UV water treatment systems for fish hatcheries known to have iron bacteria problems. Pilot treatment system testing can then provide the necessary results to ensure that UV treatment is effective against site-specific iron bacteria populations before full-scale treatment systems are implemented.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"22 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75425457","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 : 2017-08-28DOI: 10.4172/2155-9546.1000500
M. Abdelsalam
With the expansion of aquaculture practice worldwide, newly emerged diseases might be discovered among intensively farmed fishes. However, the real role of anaerobic bacterial pathogens in moribund fish is still obscure. This might be due to the difficulties in the isolation of anaerobes because of their fastidious nature. Effort should be gathered to reevaluate the actual role of anaerobes as primary or secondary pathogens in reared fishes.
{"title":"Potential Role of Anaerobic Bacteria as Fish Pathogens","authors":"M. Abdelsalam","doi":"10.4172/2155-9546.1000500","DOIUrl":"https://doi.org/10.4172/2155-9546.1000500","url":null,"abstract":"With the expansion of aquaculture practice worldwide, newly emerged diseases might be discovered among intensively farmed fishes. However, the real role of anaerobic bacterial pathogens in moribund fish is still obscure. This might be due to the difficulties in the isolation of anaerobes because of their fastidious nature. Effort should be gathered to reevaluate the actual role of anaerobes as primary or secondary pathogens in reared fishes.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"2 5 1","pages":"0-0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76033451","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 : 2017-08-25DOI: 10.4172/2155-9546.1000499
M. El‐Barbary, A. Hal
This study aims to characterize Pseudomonas species that had been isolated from various naturally diseased fresh and marine water fishes, Nile tilapia, catfish, gilt-head bream, and Sea bass using phenotypic method, morphology and biochemistry characters using API 20NE, and genotypic method (16S rRNA gene sequencing) with some of the histopathological characteristics. Six of seven presumptive Pseudomonas sp. were successfully identified by API 20NE method to level species; they were identified as 2 P. fluorescens, one P. putida, one Pseudomonas sp and 3 Burkholderia cepacia while genotypically with 16S rRNA gene sequencing that proved successful for all the four pseudomonas isolates (three as P. fluorescens and one P. putida). The results of phylogenetic analysis placed the isolates in the genus Pseudomonas based on 99% homology. Challenged test revealed that, P. fluorescens and P. putida are to be classified as pathogenic for O. niloticus and they also exhibited clinical signs and mortality rates up to 70% and showed histopathological changes of both liver and kidney which lead to death. The antibiogram study showed that no significant differences between P. fluorescens and P. putida which had intrinsically high sensitivity to nucleic acid synthesis inhibitors such as ciprofloxacin, norfloxacin, gentamycin, gatifloxacin, lomefloxacin and kanamycin. This study concluded that good overall agreement between phenotypic and genotypic identification procedures was found for the isolates with some minor differences in biochemical and physiological characteristics were observed between P. fluorescens strains, while the genotypic differences were significant observed between P. fluorescens and P. putida isolated from various fishes.
{"title":"Phenotypic and Genotypic Characterization of Some Pseudomonas sp.Associated with Burkholderia cepacia Isolated from Various Infected Fishes","authors":"M. El‐Barbary, A. Hal","doi":"10.4172/2155-9546.1000499","DOIUrl":"https://doi.org/10.4172/2155-9546.1000499","url":null,"abstract":"This study aims to characterize Pseudomonas species that had been isolated from various naturally diseased fresh and marine water fishes, Nile tilapia, catfish, gilt-head bream, and Sea bass using phenotypic method, morphology and biochemistry characters using API 20NE, and genotypic method (16S rRNA gene sequencing) with some of the histopathological characteristics. Six of seven presumptive Pseudomonas sp. were successfully identified by API 20NE method to level species; they were identified as 2 P. fluorescens, one P. putida, one Pseudomonas sp and 3 Burkholderia cepacia while genotypically with 16S rRNA gene sequencing that proved successful for all the four pseudomonas isolates (three as P. fluorescens and one P. putida). The results of phylogenetic analysis placed the isolates in the genus Pseudomonas based on 99% homology. Challenged test revealed that, P. fluorescens and P. putida are to be classified as pathogenic for O. niloticus and they also exhibited clinical signs and mortality rates up to 70% and showed histopathological changes of both liver and kidney which lead to death. The antibiogram study showed that no significant differences between P. fluorescens and P. putida which had intrinsically high sensitivity to nucleic acid synthesis inhibitors such as ciprofloxacin, norfloxacin, gentamycin, gatifloxacin, lomefloxacin and kanamycin. This study concluded that good overall agreement between phenotypic and genotypic identification procedures was found for the isolates with some minor differences in biochemical and physiological characteristics were observed between P. fluorescens strains, while the genotypic differences were significant observed between P. fluorescens and P. putida isolated from various fishes.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"131 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86351109","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 : 2017-08-25DOI: 10.4172/2155-9546.1000502
M. D. Oedjoe
Sea cucumber having commercial value more than chimoderms group because nutrition composition of sea cucumber is high then demand from world market will sea cucucmber increase every year. The purpose of this research i.e., know nutrition composition as an effort to request to need to animal protein community at Menia Sabu Raijua. Methods used is quantitative with quadrant transect and proximate analyzed. The results show that the average ingredients value nutrition of fresh sea cucumber as: the protein (21% to 44.07%), fat (1.01% to 1.19%), carbohydrate (0.5% to 2.34%), ash (2.01% to 3.07%) and water (76.03% to 79,43%).
{"title":"Composition of Nutritional Content of Sea Cucumbers (Holothuroidea) in Mania Waters, Sabu Raijua Regency, East Nusa Tenggara","authors":"M. D. Oedjoe","doi":"10.4172/2155-9546.1000502","DOIUrl":"https://doi.org/10.4172/2155-9546.1000502","url":null,"abstract":"Sea cucumber having commercial value more than chimoderms group because nutrition composition of sea cucumber is high then demand from world market will sea cucucmber increase every year. The purpose of this research i.e., know nutrition composition as an effort to request to need to animal protein community at Menia Sabu Raijua. Methods used is quantitative with quadrant transect and proximate analyzed. The results show that the average ingredients value nutrition of fresh sea cucumber as: the protein (21% to 44.07%), fat (1.01% to 1.19%), carbohydrate (0.5% to 2.34%), ash (2.01% to 3.07%) and water (76.03% to 79,43%).","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"1 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75550209","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 : 2017-08-24DOI: 10.4172/2155-9546.1000498
W. Mekkawy, Barman Bk, Kohinoor Ahm, Benzie Jah
survey was conducted of the mono-sex tilapia hatcheries in Bangladesh to analyze the structure and management of the hatchery sector in Bangladesh. Eighty-five hatcheries were surveyed by a questionnaire designed to obtain information on owner details, staffing, hatchery production capacity, management processes, and performance for the year 2009, and data from farms supplied by each hatchery. Thirteen quantitative variables were used for a principal component analysis (PCA). Four principal components had eigenvalues greater than 1, collectively expressing 77.0% of the total variance with the first two components, (50.8% of total variance) reflecting the volume of fry production and available facilities. Multiple correspondence analysis (MCA) was used to include qualitative variables related to hatchery management and educational level of the owners in the analysis. A two-step cluster analysis using the results of PCA and MCA identified two different groups of hatcheries. One cluster was characterized by high capacity of production of fry, infrastructure and manpower. The other cluster had moderate scales of production. In summary, the management of hatcheries was very similar across Bangladesh with the main difference between them being scale of fry production.
{"title":"Characterization of Mono-sex Nile tilapia (Oreochromis niloticus) Hatcheries inBangladesh","authors":"W. Mekkawy, Barman Bk, Kohinoor Ahm, Benzie Jah","doi":"10.4172/2155-9546.1000498","DOIUrl":"https://doi.org/10.4172/2155-9546.1000498","url":null,"abstract":"survey was conducted of the mono-sex tilapia hatcheries in Bangladesh to analyze the structure and management of the hatchery sector in Bangladesh. Eighty-five hatcheries were surveyed by a questionnaire designed to obtain information on owner details, staffing, hatchery production capacity, management processes, and performance for the year 2009, and data from farms supplied by each hatchery. Thirteen quantitative variables were used for a principal component analysis (PCA). Four principal components had eigenvalues greater than 1, collectively expressing 77.0% of the total variance with the first two components, (50.8% of total variance) reflecting the volume of fry production and available facilities. \u0000Multiple correspondence analysis (MCA) was used to include qualitative variables related to hatchery management and educational level of the owners in the analysis. A two-step cluster analysis using the results of PCA and MCA identified two different groups of hatcheries. One cluster was characterized by high capacity of production of fry, infrastructure and manpower. The other cluster had moderate scales of production. In summary, the management of hatcheries was very similar across Bangladesh with the main difference between them being scale of fry production.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"42 1","pages":"0-0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84111609","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 : 2017-08-04DOI: 10.4172/2155-9546.1000497
Ntobeko Mchunu, G. Lagerwall, A. Senzanje
Aquaponic system is the innovative production of fish and plants at the same time in one circulating system. Aquaponic system is the quick emerging practice worldwide, particularly in the Republic of South Africa (RSA). There is little information, if any, that relates RSA with aquaponics system. As such, this literature review looked briefly in soilless systems setups that make up an aquaponic system. However, the focus was made on aquaponics system particularly, toward understanding the system operational, sustainability and suitability RSA. The literature also looked at potential method such as aquaponics system model development to kick start and optimise aquaponics system productivity in RSA. Food sovereignty through aquaponics system has a great potential to address food and nutrition insecurity in RSA.
{"title":"Food Sovereignty for Food Security, Aquaponics System as a Potential Method: A Review","authors":"Ntobeko Mchunu, G. Lagerwall, A. Senzanje","doi":"10.4172/2155-9546.1000497","DOIUrl":"https://doi.org/10.4172/2155-9546.1000497","url":null,"abstract":"Aquaponic system is the innovative production of fish and plants at the same time in one circulating system. Aquaponic system is the quick emerging practice worldwide, particularly in the Republic of South Africa (RSA). There is little information, if any, that relates RSA with aquaponics system. As such, this literature review looked briefly in soilless systems setups that make up an aquaponic system. However, the focus was made on aquaponics system particularly, toward understanding the system operational, sustainability and suitability RSA. The literature also looked at potential method such as aquaponics system model development to kick start and optimise aquaponics system productivity in RSA. Food sovereignty through aquaponics system has a great potential to address food and nutrition insecurity in RSA.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"130 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2017-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90284721","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 : 2017-07-27DOI: 10.4172/2155-9546.1000495
M. Plamoottil
Systematic studies conducted on Mystus species of northern Kerala are very rare. It is due the taxonomic ambiguity which had existed in many species of this genus? To solve this dilemma, during this study, all Mystus species were collected from their type localities and taxonomically analysed. Examination of meristic, metric and major morphometric characters helped to prove the identity of all Mystus species of these regions.
{"title":"Taxonomic Notes on Mystus Species of Northern Kerala","authors":"M. Plamoottil","doi":"10.4172/2155-9546.1000495","DOIUrl":"https://doi.org/10.4172/2155-9546.1000495","url":null,"abstract":"Systematic studies conducted on Mystus species of northern Kerala are very rare. It is due the taxonomic ambiguity which had existed in many species of this genus? To solve this dilemma, during this study, all Mystus species were collected from their type localities and taxonomically analysed. Examination of meristic, metric and major morphometric characters helped to prove the identity of all Mystus species of these regions.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"26 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80874265","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 : 2017-07-21DOI: 10.4172/2155-9546.1000492
T. T. Paul, R. Palaniswamy, S. Manoharan, U. Unnithan, U. Sarkar
Reservoirs nicknamed as sleeping giants have been identified as the nearest possible alternative source of fish production only recently. But the average fish productivity of reservoirs in India is nearly 30 Kg/ha and this is not sufficient enough to match the ever-doubling rate of population demands. The paper thus discusses the various enhancement strategies adopted for Indian reservoirs. The paper emphasizes enhancing fish production by manipulating biological and physical basis of production along with other strategies for maximizing fishing in the reservoirs. The challenges involved in fish production using various strategies have also been discussed.
{"title":"Management Strategies for Reservoirs Fisheries","authors":"T. T. Paul, R. Palaniswamy, S. Manoharan, U. Unnithan, U. Sarkar","doi":"10.4172/2155-9546.1000492","DOIUrl":"https://doi.org/10.4172/2155-9546.1000492","url":null,"abstract":"Reservoirs nicknamed as sleeping giants have been identified as the nearest possible alternative source of fish production only recently. But the average fish productivity of reservoirs in India is nearly 30 Kg/ha and this is not sufficient enough to match the ever-doubling rate of population demands. The paper thus discusses the various enhancement strategies adopted for Indian reservoirs. The paper emphasizes enhancing fish production by manipulating biological and physical basis of production along with other strategies for maximizing fishing in the reservoirs. The challenges involved in fish production using various strategies have also been discussed.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"48 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85158235","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 : 2017-07-12DOI: 10.4172/2155-9546.1000493
T. E. Ayari, A. Mleiki, N. T. E. Menif
Stramonita haemastoma is a gonochoric marine gastropod. The examination of the genital tract has revealed the occurrence of malformations affecting the penis of males S. haemastoma, as for the females only aphallia was recorded. Investigations of the genital tract malformations were made in snails sampled monthly from Bizerta Channel (Northern Tunisia), over one-year period of sampling (June 2009 to May 2010). S. haemastoma was sampled in 2013 from sixteen sites located in the Mediterranean and Atlantic coast. The development of such type of malformations was associated to the use of antifouling paints. However, this assumption should be supported by further bioassays.
{"title":"Genitalia Malformations in Stramonita haemastoma (Gastropoda: Muricidae) from Atlantic and Mediterranean Coast","authors":"T. E. Ayari, A. Mleiki, N. T. E. Menif","doi":"10.4172/2155-9546.1000493","DOIUrl":"https://doi.org/10.4172/2155-9546.1000493","url":null,"abstract":"Stramonita haemastoma is a gonochoric marine gastropod. The examination of the genital tract has revealed the occurrence of malformations affecting the penis of males S. haemastoma, as for the females only aphallia was recorded. Investigations of the genital tract malformations were made in snails sampled monthly from Bizerta Channel (Northern Tunisia), over one-year period of sampling (June 2009 to May 2010). S. haemastoma was sampled in 2013 from sixteen sites located in the Mediterranean and Atlantic coast. The development of such type of malformations was associated to the use of antifouling paints. However, this assumption should be supported by further bioassays.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83790408","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 : 2017-07-12DOI: 10.4172/2155-9546.1000490
K. Prameswari, M. Hemalatha, B. Kishori, P. Reddy
Induced reproduction of cultured species helps to produce quantity and quality seed an important component for upright yield in crustacean aquaculture. The present study was aimed to investigate the role of arachidonic acid in the regulation of ovarian development in the freshwater crab, Oziothelphusa senex senex. Injection of AA significantly (p<0.001) increased the ovarian index, oocyte diameter and ovarian vitellogenin levels. Injection of COX inhibitors such as indomethacin and aspirin alone, and in combination with AA resulted in significant (p<0.001) reduction in ovarian index, oocyte diameter and ovarian vitellogenin levels in crabs. The results of the present study provide evidence that arachidonic acid and COX inhibitors involved in the regulation of female reproduction in the freshwater crab, Oziothelphusa senex senex.
{"title":"Role of Arachidonic Acid and COX Inhibitors in the Regulation of Reproduction in Freshwater Crab Oziothelphusa senex senex","authors":"K. Prameswari, M. Hemalatha, B. Kishori, P. Reddy","doi":"10.4172/2155-9546.1000490","DOIUrl":"https://doi.org/10.4172/2155-9546.1000490","url":null,"abstract":"Induced reproduction of cultured species helps to produce quantity and quality seed an important component for upright yield in crustacean aquaculture. The present study was aimed to investigate the role of arachidonic acid in the regulation of ovarian development in the freshwater crab, Oziothelphusa senex senex. Injection of AA significantly (p<0.001) increased the ovarian index, oocyte diameter and ovarian vitellogenin levels. Injection of COX inhibitors such as indomethacin and aspirin alone, and in combination with AA resulted in significant (p<0.001) reduction in ovarian index, oocyte diameter and ovarian vitellogenin levels in crabs. The results of the present study provide evidence that arachidonic acid and COX inhibitors involved in the regulation of female reproduction in the freshwater crab, Oziothelphusa senex senex.","PeriodicalId":15243,"journal":{"name":"Journal of Aquaculture Research and Development","volume":"41 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89577428","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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