Pub Date : 2022-08-14DOI: 10.1080/10454438.2022.2113584
Razan ZeinEddine, Nivin A Nasser, Samer Monzer, Mohammad Abiad, I. Saoud
{"title":"Restaurant post-consumer food waste as a dietary ingredient for Nile tilapia: growth and proximate composition","authors":"Razan ZeinEddine, Nivin A Nasser, Samer Monzer, Mohammad Abiad, I. Saoud","doi":"10.1080/10454438.2022.2113584","DOIUrl":"https://doi.org/10.1080/10454438.2022.2113584","url":null,"abstract":"","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42641718","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 : 2022-08-06DOI: 10.1080/10454438.2022.2107885
Mateus Salvador, R. Bhujel, Kshitiz Shrestha, Adriano D. F. DoCarmo, J. Pant
{"title":"Fish production and socio-economic benefits of small-scale aquaculture in Timor-Leste after and during project implementation","authors":"Mateus Salvador, R. Bhujel, Kshitiz Shrestha, Adriano D. F. DoCarmo, J. Pant","doi":"10.1080/10454438.2022.2107885","DOIUrl":"https://doi.org/10.1080/10454438.2022.2107885","url":null,"abstract":"","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42026155","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 : 2022-07-27DOI: 10.1080/10454438.2022.2105673
Naglaa F. Elbaz, Mohammad E. Abd Al Fatah
{"title":"Bacterial diseases outbreaks in some freshwater fish farms in Kafr El-Sheikh, Egypt","authors":"Naglaa F. Elbaz, Mohammad E. Abd Al Fatah","doi":"10.1080/10454438.2022.2105673","DOIUrl":"https://doi.org/10.1080/10454438.2022.2105673","url":null,"abstract":"","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47621800","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 : 2022-07-27DOI: 10.1080/10454438.2022.2105672
Kondee Chauyod, S. Rattanavarin, P. Sarapukdee, S. Porntheeraphat, K. Sritunyalucksana, N. Khemthongcharoen
ABSTRACT This study evaluated the inhibitory function of probiotics isolated from three commercial products used in shrimp farming management. Five species of probiotics were isolated from the commercial products, which were B. subtilis, B. megaterium, B. velezensis, B. licheniformis, and B. amyloliquefaciens. The inhibitory function of the isolated probiotics on the growth of an acute hepatopancreatic necrosis disease (AHPND)-causing V. parahaemolyticus (VPAHPND), nonpathogenic V. parahaemolyticus, and Vibrio spp. isolated from shrimp farming samples were examined by disc diffusion and bacteriocin-like inhibitory substance test. Disc diffusion and bacteriocin-like inhibitory substance screening indicated that only B. velezensis could inhibit all Vibrio spp. Inhibitory efficiency of B. velezensis was further evaluated in the liquid media using the co-culture technique. With the assistance of a growth curve-monitoring system, we could examine multiple co-culture factors that affected the probiotic efficiency in the same experiment. The results demonstrated that the inhibitory efficiency of B. velezensis was increased with its concentration. The inhibitory efficiency of B. velezensis incubating in tryptic soy broth at pH 7.4 with 2% NaCl (TSB+) and Luria-Bertani broth at pH 7.4 with 1% NaCl (LB) was better than in alkaline peptone water broth at pH 8 with 2% NaCl (APW).
{"title":"Bacillus velezensis suppression on the growth of Vibrio parahaemolyticus causing acute hepatopancreatic necrosis disease in marine shrimp","authors":"Kondee Chauyod, S. Rattanavarin, P. Sarapukdee, S. Porntheeraphat, K. Sritunyalucksana, N. Khemthongcharoen","doi":"10.1080/10454438.2022.2105672","DOIUrl":"https://doi.org/10.1080/10454438.2022.2105672","url":null,"abstract":"ABSTRACT This study evaluated the inhibitory function of probiotics isolated from three commercial products used in shrimp farming management. Five species of probiotics were isolated from the commercial products, which were B. subtilis, B. megaterium, B. velezensis, B. licheniformis, and B. amyloliquefaciens. The inhibitory function of the isolated probiotics on the growth of an acute hepatopancreatic necrosis disease (AHPND)-causing V. parahaemolyticus (VPAHPND), nonpathogenic V. parahaemolyticus, and Vibrio spp. isolated from shrimp farming samples were examined by disc diffusion and bacteriocin-like inhibitory substance test. Disc diffusion and bacteriocin-like inhibitory substance screening indicated that only B. velezensis could inhibit all Vibrio spp. Inhibitory efficiency of B. velezensis was further evaluated in the liquid media using the co-culture technique. With the assistance of a growth curve-monitoring system, we could examine multiple co-culture factors that affected the probiotic efficiency in the same experiment. The results demonstrated that the inhibitory efficiency of B. velezensis was increased with its concentration. The inhibitory efficiency of B. velezensis incubating in tryptic soy broth at pH 7.4 with 2% NaCl (TSB+) and Luria-Bertani broth at pH 7.4 with 1% NaCl (LB) was better than in alkaline peptone water broth at pH 8 with 2% NaCl (APW).","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49653783","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 : 2022-07-24DOI: 10.1080/10454438.2022.2102957
Abu Zafar, Moshabberul Alam Roni, M. Rana, N. Akter
ABSTRACT This investigation aimed to assess the impact of rearing biomass on growth, digestive enzyme activity, and hematobiochemical indices of Nile tilapia in a tank-based recirculatory aquaculture system (RAS) for 90 days. Oreochromis niloticus (35.5 ± 0.24 g) were randomly stocked at the following densities: 80 fish/m3 (F80), 120 fish/m3 (F120), and 160 fish/m3 (F160) in triplicate. Ammonia, nitrate, nitrite, and CO2 were increased significantly as density increased and dissolved oxygen decreased (P < 0.05). A significantly increased weight gain, specific growth rate, growth efficiency, and protein efficiency ratio were recorded in F80 groups compared to F160 groups, whereas feed conversion ratio was decreased. Protease, amylase, and lipase activities were significantly lower as fish density increased. An improved (P < 0.05) red blood cell count, hemoglobin, and hematocrit were found in F160 groups. A considerably higher level of glucose, cortisol, triglycerides, total cholesterol, alanine, and aspartate aminotransferase were recorded in high-density tanks (P < 0.05). The crude lipid and carbohydrate contents were significantly lower in F160 groups. Hence, the outcomes of the present study indicated that stocking density 80 fish per m3 would be appropriate as it promotes the growth and health status of Nile tilapia cultured in RAS.
{"title":"Growth, digestive enzyme activities, proximate composition and hemato-biochemcial responses of juvenile Nile tilapia (Oreochromis niloticus) reared at various stocking densities in a recirculatory aquaculture system","authors":"Abu Zafar, Moshabberul Alam Roni, M. Rana, N. Akter","doi":"10.1080/10454438.2022.2102957","DOIUrl":"https://doi.org/10.1080/10454438.2022.2102957","url":null,"abstract":"ABSTRACT This investigation aimed to assess the impact of rearing biomass on growth, digestive enzyme activity, and hematobiochemical indices of Nile tilapia in a tank-based recirculatory aquaculture system (RAS) for 90 days. Oreochromis niloticus (35.5 ± 0.24 g) were randomly stocked at the following densities: 80 fish/m3 (F80), 120 fish/m3 (F120), and 160 fish/m3 (F160) in triplicate. Ammonia, nitrate, nitrite, and CO2 were increased significantly as density increased and dissolved oxygen decreased (P < 0.05). A significantly increased weight gain, specific growth rate, growth efficiency, and protein efficiency ratio were recorded in F80 groups compared to F160 groups, whereas feed conversion ratio was decreased. Protease, amylase, and lipase activities were significantly lower as fish density increased. An improved (P < 0.05) red blood cell count, hemoglobin, and hematocrit were found in F160 groups. A considerably higher level of glucose, cortisol, triglycerides, total cholesterol, alanine, and aspartate aminotransferase were recorded in high-density tanks (P < 0.05). The crude lipid and carbohydrate contents were significantly lower in F160 groups. Hence, the outcomes of the present study indicated that stocking density 80 fish per m3 would be appropriate as it promotes the growth and health status of Nile tilapia cultured in RAS.","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41722701","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 : 2022-07-14DOI: 10.1080/10454438.2022.2099779
M. A. Garcia, L. Mendes, N. Silveira, K. C. Mendonça, N. Mendes
ABSTRACT Summer mortality of Crassostrea gigas occurs in Brazilian crops, with predominance in the final phase of cultivation, when they reach the commercial size, generating significant losses for local producers. In order to mitigate this problem, a technical solution, whose principle is based on long-term confinement at low temperatures (10 −12°C) for inducing a similar basal metabolism regime, has been developed. According to the current literature, if the spawning process is not triggered, a substantial reduction in the mortality rate can be achieved. This work evaluates not only the effectiveness of this technological solution to reduce summer mortality but also the quality associated to commercial attributes of the oysters as a final product. A ninety-one day experiment has been carried out and has shown that the proposed solution is able to maintain Crassostrea gigas diploid oysters alive and healthy.
{"title":"A technological solution for preserving the quantity and quality of oysters grown in Brazil","authors":"M. A. Garcia, L. Mendes, N. Silveira, K. C. Mendonça, N. Mendes","doi":"10.1080/10454438.2022.2099779","DOIUrl":"https://doi.org/10.1080/10454438.2022.2099779","url":null,"abstract":"ABSTRACT Summer mortality of Crassostrea gigas occurs in Brazilian crops, with predominance in the final phase of cultivation, when they reach the commercial size, generating significant losses for local producers. In order to mitigate this problem, a technical solution, whose principle is based on long-term confinement at low temperatures (10 −12°C) for inducing a similar basal metabolism regime, has been developed. According to the current literature, if the spawning process is not triggered, a substantial reduction in the mortality rate can be achieved. This work evaluates not only the effectiveness of this technological solution to reduce summer mortality but also the quality associated to commercial attributes of the oysters as a final product. A ninety-one day experiment has been carried out and has shown that the proposed solution is able to maintain Crassostrea gigas diploid oysters alive and healthy.","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42558115","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 : 2022-07-08DOI: 10.1080/10454438.2022.2095239
Sharifah Lia Farliana Wan Alias, M. Munir, R. Asdari, Abdul Hannan, J. Hasan
The slow growth rate of empurau ( Tor tambroides ) fish has been reported, impeding its aquaculture practice extensively in Malaysia. It mainly occurs at the fry to fingerling phase. Hence, the present research evaluated the dietary lacto-sacc feed supplement on the growth performance and health status of T. tambroides fries. The fish growth was outperformed significantly (P < 0.05) after 12 weeks in fish fed with the lacto-sacc supplemented fish feed compared to the nonsupplemented control diet. As with the growth performance, the basic hematological parameters were significantly (P < 0.05) improved. This study was the first attempt to indicate the suitability of dietary lacto-sacc for empurau fries nursery in an aquaponics system. Although this study was performed in four types of aquaponics systems, the factorial analysis confirmed that diet had a strong effect for this occurrence.
{"title":"Dietary lacto-sacc improved growth performance, food acceptability, body indices, and basic hematological parameters in empurau (Tor tambroides) fries reared in the aquaponics system","authors":"Sharifah Lia Farliana Wan Alias, M. Munir, R. Asdari, Abdul Hannan, J. Hasan","doi":"10.1080/10454438.2022.2095239","DOIUrl":"https://doi.org/10.1080/10454438.2022.2095239","url":null,"abstract":"The slow growth rate of empurau ( Tor tambroides ) fish has been reported, impeding its aquaculture practice extensively in Malaysia. It mainly occurs at the fry to fingerling phase. Hence, the present research evaluated the dietary lacto-sacc feed supplement on the growth performance and health status of T. tambroides fries. The fish growth was outperformed significantly (P < 0.05) after 12 weeks in fish fed with the lacto-sacc supplemented fish feed compared to the nonsupplemented control diet. As with the growth performance, the basic hematological parameters were significantly (P < 0.05) improved. This study was the first attempt to indicate the suitability of dietary lacto-sacc for empurau fries nursery in an aquaponics system. Although this study was performed in four types of aquaponics systems, the factorial analysis confirmed that diet had a strong effect for this occurrence.","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44744975","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 : 2022-07-01DOI: 10.1080/10454438.2022.2094208
P. A. Vikas, Shinoj Subramannian
ABSTRACT The American brackish water mussel invaded Kerala’s backwaters in 2019, and a complete eradication may not be possible at this point. Management protocols and strategies need to be developed to overcome the issue. Biological management against biofouling is a new possible approach, although it needs to be sustainable in aquaculture, where the sustainability of the method is important. The present study reports the success of a biological management strategy against biofouling of Mytella strigata by employing a native cichlid Etroplus suratensis (pearlspot), as they feed on bivalves. The study was conducted in the brackish water cage farm of a 1 ha area located at Veerampuzha backwaters, Ernakulam, in the southwest of Kerala. Pearlspot fishes were stocked inside and also in the gap between inner and outer nets of the test cages as the anti-biofouling agent. Pearlspot grew considerably by feeding on the mussel spat settled on the nets and removing a considerable amount of the fouling on the nets (287%), the increases in the average growth of seabass, in the survival rate, and in overall production of the cages.
{"title":"Invasive black mussel Mytella strigata biofouling in brackish water cage fish farms","authors":"P. A. Vikas, Shinoj Subramannian","doi":"10.1080/10454438.2022.2094208","DOIUrl":"https://doi.org/10.1080/10454438.2022.2094208","url":null,"abstract":"ABSTRACT The American brackish water mussel invaded Kerala’s backwaters in 2019, and a complete eradication may not be possible at this point. Management protocols and strategies need to be developed to overcome the issue. Biological management against biofouling is a new possible approach, although it needs to be sustainable in aquaculture, where the sustainability of the method is important. The present study reports the success of a biological management strategy against biofouling of Mytella strigata by employing a native cichlid Etroplus suratensis (pearlspot), as they feed on bivalves. The study was conducted in the brackish water cage farm of a 1 ha area located at Veerampuzha backwaters, Ernakulam, in the southwest of Kerala. Pearlspot fishes were stocked inside and also in the gap between inner and outer nets of the test cages as the anti-biofouling agent. Pearlspot grew considerably by feeding on the mussel spat settled on the nets and removing a considerable amount of the fouling on the nets (287%), the increases in the average growth of seabass, in the survival rate, and in overall production of the cages.","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48198038","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 : 2022-06-18DOI: 10.1080/10454438.2022.2090884
K. B. Workagegn, Bereket Haji Kedir
ABSTRACT The study was conducted to assess the status, trend and potential of small-scale aquaculture production and its use as food and income sources. The study also identified the major constraints affecting the development of aquaculture and suggested possible interventions for further research and extension services in the study areas. Data was collected from a total of 300 households and presented as descriptive statistics. The present study showed that 96.7% of the total respondents were used river and stream water to fill their ponds. The study also showed that 93.4% of fish farmers were involved in pond-based aquaculture production. Relatively higher numbers of fish farmers found in Gedeo Zone (95.5%) were involved in pond-based aquaculture than found in Sidama Region (87.2%). Across the study areas, 34.7% of the respondents reported that fish production trend is increasing. The study also showed that 72.7% of the respondents reported that the absence of technologies was the first ranked constraint affecting the development of small-scale aquaculture. In conclusion, the trend of small-scale aquaculture production is increasing due to the availability of potential water resources and good types of soil used for pond-based aquaculture development. The absence of aquaculture technologies, and lack of quality fingerlings are the most prominent constrains affecting the development of aquaculture. Therefore, capacity building through training, extension, and advanced education to fish rearing households and researchers and allocation resources are crucial for successful development of aquaculture in the study areas.
{"title":"The status and potential of small-scale aquaculture development in Southern Ethiopia","authors":"K. B. Workagegn, Bereket Haji Kedir","doi":"10.1080/10454438.2022.2090884","DOIUrl":"https://doi.org/10.1080/10454438.2022.2090884","url":null,"abstract":"ABSTRACT The study was conducted to assess the status, trend and potential of small-scale aquaculture production and its use as food and income sources. The study also identified the major constraints affecting the development of aquaculture and suggested possible interventions for further research and extension services in the study areas. Data was collected from a total of 300 households and presented as descriptive statistics. The present study showed that 96.7% of the total respondents were used river and stream water to fill their ponds. The study also showed that 93.4% of fish farmers were involved in pond-based aquaculture production. Relatively higher numbers of fish farmers found in Gedeo Zone (95.5%) were involved in pond-based aquaculture than found in Sidama Region (87.2%). Across the study areas, 34.7% of the respondents reported that fish production trend is increasing. The study also showed that 72.7% of the respondents reported that the absence of technologies was the first ranked constraint affecting the development of small-scale aquaculture. In conclusion, the trend of small-scale aquaculture production is increasing due to the availability of potential water resources and good types of soil used for pond-based aquaculture development. The absence of aquaculture technologies, and lack of quality fingerlings are the most prominent constrains affecting the development of aquaculture. Therefore, capacity building through training, extension, and advanced education to fish rearing households and researchers and allocation resources are crucial for successful development of aquaculture in the study areas.","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44905607","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 : 2022-05-28DOI: 10.1080/10454438.2022.2079966
G. A. Pereira, C. E. Copatti, R. A. C. R. Figueiredo, Francisco José de Souza Reis, L. Costa, Gustavo Souza, J. Melo
ABSTRACT This study assessed the effectiveness of triploidy in tambaqui (Colossoma macropomum) and compared the fertilization, survival, growth performance, and hematological parameters of diploid and triploid fish. After artificial reproduction, freshly fertilized eggs were subjected to cold, heat or double thermal shock or were not exposed to the thermal shock (control group). Double thermal shock presented fertilization rate significantly lower than other treatments. Larvae submitted to cold thermal shock had a higher weight than the control and heat thermal shock treatments. The final weight of juveniles exposed to cold thermal shock was significantly higher than the other treatments with triploid induction. There was no significant difference for survival and hematological variables. The cold thermal shock produced more triploid individuals (33.33%) than the heat and double thermal shock (both 11.11%). The cold thermal shock was the most effective technique for obtaining triploid fish and it contributed to increasing the weight of tambaqui larvae.
{"title":"Cold, heat, or double thermal shock in tambaqui (Colossoma macropomum): triploid induction, fertilization rate, growth, and hematological variables","authors":"G. A. Pereira, C. E. Copatti, R. A. C. R. Figueiredo, Francisco José de Souza Reis, L. Costa, Gustavo Souza, J. Melo","doi":"10.1080/10454438.2022.2079966","DOIUrl":"https://doi.org/10.1080/10454438.2022.2079966","url":null,"abstract":"ABSTRACT This study assessed the effectiveness of triploidy in tambaqui (Colossoma macropomum) and compared the fertilization, survival, growth performance, and hematological parameters of diploid and triploid fish. After artificial reproduction, freshly fertilized eggs were subjected to cold, heat or double thermal shock or were not exposed to the thermal shock (control group). Double thermal shock presented fertilization rate significantly lower than other treatments. Larvae submitted to cold thermal shock had a higher weight than the control and heat thermal shock treatments. The final weight of juveniles exposed to cold thermal shock was significantly higher than the other treatments with triploid induction. There was no significant difference for survival and hematological variables. The cold thermal shock produced more triploid individuals (33.33%) than the heat and double thermal shock (both 11.11%). The cold thermal shock was the most effective technique for obtaining triploid fish and it contributed to increasing the weight of tambaqui larvae.","PeriodicalId":15031,"journal":{"name":"Journal of Applied Aquaculture","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42433595","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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