Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.132160-11
None Jaspreet singh, S. K. Ahirwal, None Tarkeshwar Kumar, None Vivekanand Bharti, None Pranab Gogoi, None Kamal Sarma
The present study estimated the morphometric relationships between body and sagittal otolith of the economically and nutritionally important pool barb Puntius sophore (Hamilton, 1822). A total of 266 fish specimens were collected monthly from the Ganga and Punpun rivers of Bihar, India from September 2021 to March 2022 Length-weight relationships (LWRs), length frequency distribution, condition factor and otolith aspect ratio were assessed. The fish length and weight ranged from 5.57 cm to 11.17 cm and 1.18 g to 18.98 g, respectively. The b value in LWRs (b>3) were estimated as 3.20 and 3.17 for Ganga and Punpun, respectively. Condition factors indicated optimal growth conditions for this species in both the rivers. The fish and otolith morphometrics showed a positive correlation, and the highest coefficient of determination (R2) was observed between total fish length and otolith weight (R2= 0.942) followed by fish length and otolith length (R2=0.90). All of these relationships are significant to fisheries management and useful for future time series studies on food-feeding habits, stock structure, environmental change and resource conservation. Keywords : Coefficient of determination, Condition factor, Fish otolith, Growth, Length-weight relationship
{"title":"Relationship between fish body and sagittal otolith morphometrics in the pool barb Puntius sophore (Hamilton, 1822) from the Ganga and Punpun rivers of Bihar, India","authors":"None Jaspreet singh, S. K. Ahirwal, None Tarkeshwar Kumar, None Vivekanand Bharti, None Pranab Gogoi, None Kamal Sarma","doi":"10.21077/ijf.2023.70.2.132160-11","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.132160-11","url":null,"abstract":"The present study estimated the morphometric relationships between body and sagittal otolith of the economically and nutritionally important pool barb Puntius sophore (Hamilton, 1822). A total of 266 fish specimens were collected monthly from the Ganga and Punpun rivers of Bihar, India from September 2021 to March 2022 Length-weight relationships (LWRs), length frequency distribution, condition factor and otolith aspect ratio were assessed. The fish length and weight ranged from 5.57 cm to 11.17 cm and 1.18 g to 18.98 g, respectively. The b value in LWRs (b>3) were estimated as 3.20 and 3.17 for Ganga and Punpun, respectively. Condition factors indicated optimal growth conditions for this species in both the rivers. The fish and otolith morphometrics showed a positive correlation, and the highest coefficient of determination (R2) was observed between total fish length and otolith weight (R2= 0.942) followed by fish length and otolith length (R2=0.90). All of these relationships are significant to fisheries management and useful for future time series studies on food-feeding habits, stock structure, environmental change and resource conservation. Keywords : Coefficient of determination, Condition factor, Fish otolith, Growth, Length-weight relationship","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136369535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.88181-18
Chandan Debnath, Lopamudra Sahoo
The growth, survival and proximate composition of Heteropneustes fossilis (Bloch, 1794) were studied under different water depths (30, 60, 90 and 120 cm) for a period of 10 months, with a temperature range of 31.5 to 7.8°C [(May-June; 26.5-31.5°C; Stage 1); (July-September; 28.8-32.6°C; Stage 2); (October-November; 15.5-28.4°C; Stage 3); (December-February; 7.8-15.7°C; Stage 4)] under earthen pond conditions in the humid subtropical climate of Tripura State, India. All the ponds were of equal size (168 m2; 14 m x 12 m) but with different water depths. The fishes were fed with a mixture of rice bran and mustard oil cake (1:1) @ 0.5-3% of their biomass. The growth, survival and proximate composition of fish were recorded in each stage. The average daily weight gain, feed conversion ratio, survival and proximate composition were found to be better in water depths of 60 cm and 90 cm during May to September when water temperature was ≥26.5°C. However, when water temperature was ≤21.4°C (October-February), growth and other attributes significantly reduced. Two-way ANOVA revealed that water depth and temperature, individually and interactively, affected the growth of H. fossilis. From this trial, it can be concluded that H. fossilis performs better when water depth is 60-90 cm and the ideal water temperature for the culture is 28.3-30.4°C. The study confirms the depth preference of H. fossilis under the humid subtropical condition and the information generatedwill help in the sustainable farming of this species. Keywords:Asian stingingcatfish, Water depth,Temperature, Growth, Survival, Proximate composition
{"title":"Effect of water depth on growth and survival of the stinging catfish Heteropneustes fossilis (Bloch, 1794) in pond rearing system of a humid subtropical agroclimatic region","authors":"Chandan Debnath, Lopamudra Sahoo","doi":"10.21077/ijf.2023.70.2.88181-18","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.88181-18","url":null,"abstract":"The growth, survival and proximate composition of Heteropneustes fossilis (Bloch, 1794) were studied under different water depths (30, 60, 90 and 120 cm) for a period of 10 months, with a temperature range of 31.5 to 7.8°C [(May-June; 26.5-31.5°C; Stage 1); (July-September; 28.8-32.6°C; Stage 2); (October-November; 15.5-28.4°C; Stage 3); (December-February; 7.8-15.7°C; Stage 4)] under earthen pond conditions in the humid subtropical climate of Tripura State, India. All the ponds were of equal size (168 m2; 14 m x 12 m) but with different water depths. The fishes were fed with a mixture of rice bran and mustard oil cake (1:1) @ 0.5-3% of their biomass. The growth, survival and proximate composition of fish were recorded in each stage. The average daily weight gain, feed conversion ratio, survival and proximate composition were found to be better in water depths of 60 cm and 90 cm during May to September when water temperature was ≥26.5°C. However, when water temperature was ≤21.4°C (October-February), growth and other attributes significantly reduced. Two-way ANOVA revealed that water depth and temperature, individually and interactively, affected the growth of H. fossilis. From this trial, it can be concluded that H. fossilis performs better when water depth is 60-90 cm and the ideal water temperature for the culture is 28.3-30.4°C. The study confirms the depth preference of H. fossilis under the humid subtropical condition and the information generatedwill help in the sustainable farming of this species. Keywords:Asian stingingcatfish, Water depth,Temperature, Growth, Survival, Proximate composition","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136370531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.120615-15
J. Charles Jeeva, Muktha Menon, S. S. Raju, None R. Narayanakumar, L. Loveson Edward, None M. Sathishkumar, Shubhadeep Ghosh
This study discusses the impact of first and second waves of the COVID-19 pandemic on marine fisheries sector of Andhra Pradesh, India, covering the aspects of active fishing days, perception on reduction or enhancement of demand for fish, trends in price realisation, challenges encountered in marketing the fish, perceptions on government interventions as well as changes in socio-behavioural issues. The study was conducted during the period from June to September 2021, among a sample of 152 stakeholders involved in fishing and allied activities from Srikakulam, Vizianagaram, Visakhapatnam, East Godavari and Krishna districts in Andhra Pradesh. Average number of active fishing days in a month was found to be 11.44 during the first wave and 15.10 during the second wave periods. Nearly three-fourth of the respondents (73.68%) perceived that there was reduction in demand for fish during the first wave of the pandemic, and it was to the tune of 40%. Reduction in the daily earnings was reported to the tune of 37.09%. The challenges encountered in marketing the fish were, getting export orders, access to market, availability of storage, transportation and logistics. Peer interaction, time spent with family members and time spent in social media were higher than usual during both waves of the pandemic. Changes or disruptions in usual marketing channels were reported during both the periods. Satisfied perception was expressed on government interventions such as ration, timely advisories, health care and sanitary measures. A few positive impacts on fisheries observed during the pandemic were product innovations, new distribution channels such as online marketing, e-commerce and home deliveries, shortening of supply chains including elimination of auction at fishing harbour, lowering of ocean pollution as well as government reforms. From the results of the study, we propose socio-economic interventions to be taken up by concerned governments for ensuring that the impact of the pandemic is mitigated and also that any future pandemic can have minimal impacts on the fishing community. Keywords: Export market, Livelihood, Lockdown, Nutritional security, Policy interventions, Socio-behavioural issues, Supply chains
{"title":"The impact of COVID 19 pandemic on marine fisheries sector: A case study from Andhra Pradesh, India","authors":"J. Charles Jeeva, Muktha Menon, S. S. Raju, None R. Narayanakumar, L. Loveson Edward, None M. Sathishkumar, Shubhadeep Ghosh","doi":"10.21077/ijf.2023.70.2.120615-15","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.120615-15","url":null,"abstract":"This study discusses the impact of first and second waves of the COVID-19 pandemic on marine fisheries sector of Andhra Pradesh, India, covering the aspects of active fishing days, perception on reduction or enhancement of demand for fish, trends in price realisation, challenges encountered in marketing the fish, perceptions on government interventions as well as changes in socio-behavioural issues. The study was conducted during the period from June to September 2021, among a sample of 152 stakeholders involved in fishing and allied activities from Srikakulam, Vizianagaram, Visakhapatnam, East Godavari and Krishna districts in Andhra Pradesh. Average number of active fishing days in a month was found to be 11.44 during the first wave and 15.10 during the second wave periods. Nearly three-fourth of the respondents (73.68%) perceived that there was reduction in demand for fish during the first wave of the pandemic, and it was to the tune of 40%. Reduction in the daily earnings was reported to the tune of 37.09%. The challenges encountered in marketing the fish were, getting export orders, access to market, availability of storage, transportation and logistics. Peer interaction, time spent with family members and time spent in social media were higher than usual during both waves of the pandemic. Changes or disruptions in usual marketing channels were reported during both the periods. Satisfied perception was expressed on government interventions such as ration, timely advisories, health care and sanitary measures. A few positive impacts on fisheries observed during the pandemic were product innovations, new distribution channels such as online marketing, e-commerce and home deliveries, shortening of supply chains including elimination of auction at fishing harbour, lowering of ocean pollution as well as government reforms. From the results of the study, we propose socio-economic interventions to be taken up by concerned governments for ensuring that the impact of the pandemic is mitigated and also that any future pandemic can have minimal impacts on the fishing community. Keywords: Export market, Livelihood, Lockdown, Nutritional security, Policy interventions, Socio-behavioural issues, Supply chains","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136370532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.131346-4
None Akanksha V. Rakhunde, None Vivek H. Nirmale, None Ravindra A. Pawar, None Santosh Y. Metar, None Bhaskar P. Bhosale
The cleftbelly trevally Atropus atropos (Bloch and Schneider, 1801) is one of the important carangid species landed mostly as trawl bycatch along Ratnagiri coast. Investigations were carried out on A. atropos with respect to length-weight relationship, condition factor, morphometrics, feeding and reproductive biology. The length-weight relationship indicated negative allometric growth in A. atropos. Morphometric measurements showed significant correlation with total length. The gut content analysis revealed A. atropos to be a carnivore fish feeding mainly on Acetes spp., small teleostean fishes, cephalopods, and squilla. Sex ratio showed dominance of males. Gonadosomatic index and maturity studies indicated that A. atropos has a protracted spawning season extending from May to December. Length at sexual maturity for females was estimated to be 171 mm. Fecundity ranged from 16458 to 138688 eggs with an average of 70097 eggs. Ova diameter studies showed that A. atropos spawns twice in a protracted spawning season. Keywords: By-catch, Carangidae, Carnivore, Reproductive biology, Spawning season
狭腹鲹(cleftbelly trevally Atropus atropos, Bloch and Schneider, 1801)是主要作为拖网副渔获物登陆Ratnagiri海岸的重要虾科鱼类之一。从体长-体重关系、条件因子、形态计量学、摄食生物学和生殖生物学等方面对阿特罗普沙鼠进行了研究。长-权关系表明香椿象的异速生长呈负相关。形态测量与总长度有显著的相关性。肠道成分分析表明，阿特罗普鱼是一种食肉性鱼类，主要以亚纲类、小型硬骨鱼类、头足类和鱿鱼为食。性别比表现为雄性优势。性腺指数和成熟度研究表明，沙蚕的产卵期从5月延长至12月。雌性性成熟时的体长估计为171毫米。产卵量为16458 ~ 138688个，平均为70097个。卵径研究表明，在一个漫长的产卵季节，阿特罗普沙蚕产卵两次。关键词:副渔获物，肉食性动物，繁殖生物学，产卵季节
{"title":"Biology of the cleftbelly trevally Atropus atropos (Bloch and Schneider, 1801) from Ratnagiri coast of India","authors":"None Akanksha V. Rakhunde, None Vivek H. Nirmale, None Ravindra A. Pawar, None Santosh Y. Metar, None Bhaskar P. Bhosale","doi":"10.21077/ijf.2023.70.2.131346-4","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.131346-4","url":null,"abstract":"The cleftbelly trevally Atropus atropos (Bloch and Schneider, 1801) is one of the important carangid species landed mostly as trawl bycatch along Ratnagiri coast. Investigations were carried out on A. atropos with respect to length-weight relationship, condition factor, morphometrics, feeding and reproductive biology. The length-weight relationship indicated negative allometric growth in A. atropos. Morphometric measurements showed significant correlation with total length. The gut content analysis revealed A. atropos to be a carnivore fish feeding mainly on Acetes spp., small teleostean fishes, cephalopods, and squilla. Sex ratio showed dominance of males. Gonadosomatic index and maturity studies indicated that A. atropos has a protracted spawning season extending from May to December. Length at sexual maturity for females was estimated to be 171 mm. Fecundity ranged from 16458 to 138688 eggs with an average of 70097 eggs. Ova diameter studies showed that A. atropos spawns twice in a protracted spawning season. Keywords: By-catch, Carangidae, Carnivore, Reproductive biology, Spawning season","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136369540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.126526-7
Chol-Hyok Ri, Myong-Chol Ryu, Yong-Song Kim, Yong-Jin Ri
In this study, the effect of replacement of high-quality fish meal (HQFM) with Japanese sandfish (Arctoscopus japonicus) meal (SFM) and the utility of a viscous culture broth of Leuconostoc mesenteroides (VCL) as binding material in paste diet for Japanese eel (Anguilla japonica) was tested in terms of growth, feed efficiency and digestibility. Four experimental paste diets contained, fish meal and binding materials as, HQFM and starch (F0, control), SFM and VCL (F1), SFM and a mixture of starch and VCL (F2) and SFM and starch (F3). Each diet was formulated to be iso-nitrogenous and iso-lipidic. Each group of 10 juvenile eels with an average initial body weight of 20 ± 2.5 g were randomly distributed into 15 tanks in triplicates and fish were fed twice daily with one of the 4 experimental paste diets for 90 days. Eels fed with diet F2 exhibited good growth performance (final mean weight; 55.3±0.67 g, WGR; 169±5%), being similar to eels (55.5±0.26g, 170±7%) fed a control diet (p>0.05). In spite of iso-nitrogenous and iso-lipidic diets, the feed efficiency of F1 and F3 were inferior to other diets and the same trend was observed in growth performance also, probably due to reduced feed intake owing to poor water stability of the feeds. It should be considered that incorporation of SFM could lead to the discharge of undesirable matters such as phosphorus into the water environment, though it would contribute to lowering production costs.Therefore, further investigations are needed to improve the quality of SFM. Keywords: Fish meal replacement, Growth performance, Iso-lipidic diet, Iso- nitrogenous diet, Leuconostoc mesenteroides, Water stability.
{"title":"Effect of Japanese sandfish (Arctoscopus japonicus) meal in paste diet for Anguilla japonica in terms of growth, feed efficiency and digestibility","authors":"Chol-Hyok Ri, Myong-Chol Ryu, Yong-Song Kim, Yong-Jin Ri","doi":"10.21077/ijf.2023.70.2.126526-7","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.126526-7","url":null,"abstract":"In this study, the effect of replacement of high-quality fish meal (HQFM) with Japanese sandfish (Arctoscopus japonicus) meal (SFM) and the utility of a viscous culture broth of Leuconostoc mesenteroides (VCL) as binding material in paste diet for Japanese eel (Anguilla japonica) was tested in terms of growth, feed efficiency and digestibility. Four experimental paste diets contained, fish meal and binding materials as, HQFM and starch (F0, control), SFM and VCL (F1), SFM and a mixture of starch and VCL (F2) and SFM and starch (F3). Each diet was formulated to be iso-nitrogenous and iso-lipidic. Each group of 10 juvenile eels with an average initial body weight of 20 ± 2.5 g were randomly distributed into 15 tanks in triplicates and fish were fed twice daily with one of the 4 experimental paste diets for 90 days. Eels fed with diet F2 exhibited good growth performance (final mean weight; 55.3±0.67 g, WGR; 169±5%), being similar to eels (55.5±0.26g, 170±7%) fed a control diet (p>0.05). In spite of iso-nitrogenous and iso-lipidic diets, the feed efficiency of F1 and F3 were inferior to other diets and the same trend was observed in growth performance also, probably due to reduced feed intake owing to poor water stability of the feeds. It should be considered that incorporation of SFM could lead to the discharge of undesirable matters such as phosphorus into the water environment, though it would contribute to lowering production costs.Therefore, further investigations are needed to improve the quality of SFM. Keywords: Fish meal replacement, Growth performance, Iso-lipidic diet, Iso- nitrogenous diet, Leuconostoc mesenteroides, Water stability.","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136369676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.105772-8
Kuldeep K Lal, Anindya S. Barman, Peyush Puniya, Praveen Khare, Vindhya Mohindra, Rajiv K. Singh, Rama S. Sah, Sullip K. Majhi, Bechan Lal
The present study experimentally evaluated different parameters such as extender composition, storage duration and egg to sperm ratio to optimise parameters for sperm cryopreservation in Asian stinging catfish Heteropneustes fossilis. Four extender compositions viz. Hanks Balanced Salt Solution (HBSS), Modified HBSS (M-HBSS), Modified HBSS with hen’s egg yolk (M-HBSS with EY) and European catfish extender were evaluated for sperm cryopreservation with dimethyl sulphoxide (DMSO) as cryoprotectant (10% v/v). The hatching rate was used as standard to evaluate the fertility of thawed sperm at different periods of storage (2, 270 and 668 days). After 2 days, extender M-HBSS exhibited highest hatching rate (49.06±2.67%) which was comparable to the control value (51.00±7.23%), followed by HBSS (42.76±32.0%), M-HBSS with EY (37.46±24.34%) and European catfish extender (29.47±25.61%), respectively. After 270 days with M-HBSS, hatching rate was 64.34±8.84% similar to the control; however, cryopreserved sperm with other extenders exhibited lower hatching rate as compared to control and M-HBSS. After 668 days, sperm cryopreserved in the extender M-HBSS, only yielded successful hatching. Results indicated that presence of egg yolk in the extender M-HBSS did not improve the performance of cryopreserved sperm. The successful hatching using cryopreserved sperm after 270 and 668 days of storage indicates M-HBSS as a useful extender for sperm cryobanking and seed production of H. fossilis. Keywords: Aquaculture, Cryopreservation, Cryoprotectant, Dimethyl sulphoxide, Extender, Hanks Balanced Salt Solution, Hatching rate
本研究对亚洲刺鲶化石的精子冷冻保存参数进行了实验评价，包括延长剂的组成、保存时间、卵精比等。研究了汉克斯平衡盐溶液(HBSS)、改性HBSS (M-HBSS)、鸡蛋蛋黄改性HBSS (M-HBSS with EY)和欧洲鲶鱼增剂4种以二甲亚砜(DMSO)为冷冻保护剂(10% v/v)的精子低温保存效果。以孵化率为标准评价解冻精子在不同贮存期(2,270和668天)的育性。2 d后，M-HBSS的孵化率最高(49.06±2.67%)，与对照组(51.00±7.23%)相当，其次是HBSS(42.76±32.0%)、M-HBSS与EY(37.46±24.34%)和欧洲鲶鱼(29.47±25.61%)。经M-HBSS处理270 d，孵化率为64.34±8.84%，与对照组相似;然而，与对照组和M-HBSS相比，使用其他延长剂冷冻保存的精子的孵化率较低。668天后，精子在扩展器M-HBSS中冷冻保存，仅孵化成功。结果表明，添加卵黄的M-HBSS并没有提高精子的冷冻性能。冷冻保存270天和668天的精子成功孵化表明M-HBSS是一种有用的精子冷冻储存和种子生产的扩展剂。关键词:水产养殖，低温保存，冷冻保护剂，二甲基亚砜，扩展剂，汉克斯平衡盐溶液，孵化率
{"title":"Optimisation of sperm cryopreservation protocol for Asian stinging catfish Heteropneustes fossilis (Bloch, 1794), to support hatchery seed production","authors":"Kuldeep K Lal, Anindya S. Barman, Peyush Puniya, Praveen Khare, Vindhya Mohindra, Rajiv K. Singh, Rama S. Sah, Sullip K. Majhi, Bechan Lal","doi":"10.21077/ijf.2023.70.2.105772-8","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.105772-8","url":null,"abstract":"The present study experimentally evaluated different parameters such as extender composition, storage duration and egg to sperm ratio to optimise parameters for sperm cryopreservation in Asian stinging catfish Heteropneustes fossilis. Four extender compositions viz. Hanks Balanced Salt Solution (HBSS), Modified HBSS (M-HBSS), Modified HBSS with hen’s egg yolk (M-HBSS with EY) and European catfish extender were evaluated for sperm cryopreservation with dimethyl sulphoxide (DMSO) as cryoprotectant (10% v/v). The hatching rate was used as standard to evaluate the fertility of thawed sperm at different periods of storage (2, 270 and 668 days). After 2 days, extender M-HBSS exhibited highest hatching rate (49.06±2.67%) which was comparable to the control value (51.00±7.23%), followed by HBSS (42.76±32.0%), M-HBSS with EY (37.46±24.34%) and European catfish extender (29.47±25.61%), respectively. After 270 days with M-HBSS, hatching rate was 64.34±8.84% similar to the control; however, cryopreserved sperm with other extenders exhibited lower hatching rate as compared to control and M-HBSS. After 668 days, sperm cryopreserved in the extender M-HBSS, only yielded successful hatching. Results indicated that presence of egg yolk in the extender M-HBSS did not improve the performance of cryopreserved sperm. The successful hatching using cryopreserved sperm after 270 and 668 days of storage indicates M-HBSS as a useful extender for sperm cryobanking and seed production of H. fossilis. Keywords: Aquaculture, Cryopreservation, Cryoprotectant, Dimethyl sulphoxide, Extender, Hanks Balanced Salt Solution, Hatching rate","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136370279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.126284-9
Jahan Iffat, V. K. Tiwari, Swain Sambid
The effect of salinity on serum steroid levels and gonadal development were investigated in the common carp Cyprinus carpio Linnaeus, 1758. Fishes were stocked in eight rectangular earthen ponds at four different salinities of 0, 5, 10 and 15 ppt. Changes in serum concentration of cortisol, 17 β – Estradiol, progesterone; 17α, 20β dihydroxyprogesterone and androgens were investigated. Gonadal histology in male and female C. carpio was studied at different stages of gonadal maturity till ovulation or spermiation. Serum steroid analysis showed significantly high levels (p<0.05) in fish groups reared at 0 and 5 ppt compared to 10 and 15 ppt. Significantly higher cortisol levels were found during ovulation or spermiation at 10 and 15ppt. In the present study, C. carpio was found to mature faster at 5 ppt as compared to higher salinities of 10 and 15 ppt, in inland saline water. Keywords: Aquaculture, Cyprinus carpio, Maturation, Salinity, Steroid hormones
{"title":"Effect of salinity on serum steroid levels and gonad development in common carp (Cyprinus carpio Linnaeus, 1758) reared in inland saline water","authors":"Jahan Iffat, V. K. Tiwari, Swain Sambid","doi":"10.21077/ijf.2023.70.2.126284-9","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.126284-9","url":null,"abstract":"The effect of salinity on serum steroid levels and gonadal development were investigated in the common carp Cyprinus carpio Linnaeus, 1758. Fishes were stocked in eight rectangular earthen ponds at four different salinities of 0, 5, 10 and 15 ppt. Changes in serum concentration of cortisol, 17 β – Estradiol, progesterone; 17α, 20β dihydroxyprogesterone and androgens were investigated. Gonadal histology in male and female C. carpio was studied at different stages of gonadal maturity till ovulation or spermiation. Serum steroid analysis showed significantly high levels (p<0.05) in fish groups reared at 0 and 5 ppt compared to 10 and 15 ppt. Significantly higher cortisol levels were found during ovulation or spermiation at 10 and 15ppt. In the present study, C. carpio was found to mature faster at 5 ppt as compared to higher salinities of 10 and 15 ppt, in inland saline water. Keywords: Aquaculture, Cyprinus carpio, Maturation, Salinity, Steroid hormones","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136369532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.117759-5
Sudhir Raizada, Anurag Rawat, Prem Prakash
The performance of hatchery-produced and pellet-feed-weaned fingerlings of striped murrel, Channa striata (Bloch, 1793) was assessed in the biofloc tanks for growth and survival, in a subtropical climate. The rearing was undertaken in two phases with an increase in fish size. In the first phase, fingerlings (weight 1.94±0.71 g, length 6.29±0.81 cm) were stocked @ 200 m-3 in the biofloc tanks, which were reduced to 15 m-3 in the second phase using the same stock. The fish attained a length of 25.44±1.81 cm and weight of 149.60±28.58 g in 10 months with overall survival of 93% at the end of the second phase. The total fish biomass recorded was 9.7 kg m-3 at the final harvest. The growth parameters were found temperature-dependent, which recorded 15±1.0 to 28±1.5ºC and 'W' values were found to follow Fulton's cube law during the entire culture period. The exponent (b) of 3.278 was recorded as the highest in July 2020 and lowest at 2.210 in December 2020. The lowest R2 was 0.768 and highest 0.943 during December and April respectively whereas, the recorded ‘K’ of 0.611 was the lowest in winter and highest being 0.908 in August. The study demonstrated a higher culture potential of striped murrel with hatchery-produced and feed-weaned seed in the biofloc system with zero-water exchange. Keywords: Condition factor, Fulton's cube law, Growth, Production, Survival, Zero-water exchange
{"title":"Performance of hatchery-produced and feed-weaned fingerlings of striped murrel Channa striata (Bloch, 1793) in biofloc system in the subtropical climate","authors":"Sudhir Raizada, Anurag Rawat, Prem Prakash","doi":"10.21077/ijf.2023.70.2.117759-5","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.117759-5","url":null,"abstract":"The performance of hatchery-produced and pellet-feed-weaned fingerlings of striped murrel, Channa striata (Bloch, 1793) was assessed in the biofloc tanks for growth and survival, in a subtropical climate. The rearing was undertaken in two phases with an increase in fish size. In the first phase, fingerlings (weight 1.94±0.71 g, length 6.29±0.81 cm) were stocked @ 200 m-3 in the biofloc tanks, which were reduced to 15 m-3 in the second phase using the same stock. The fish attained a length of 25.44±1.81 cm and weight of 149.60±28.58 g in 10 months with overall survival of 93% at the end of the second phase. The total fish biomass recorded was 9.7 kg m-3 at the final harvest. The growth parameters were found temperature-dependent, which recorded 15±1.0 to 28±1.5ºC and 'W' values were found to follow Fulton's cube law during the entire culture period. The exponent (b) of 3.278 was recorded as the highest in July 2020 and lowest at 2.210 in December 2020. The lowest R2 was 0.768 and highest 0.943 during December and April respectively whereas, the recorded ‘K’ of 0.611 was the lowest in winter and highest being 0.908 in August. The study demonstrated a higher culture potential of striped murrel with hatchery-produced and feed-weaned seed in the biofloc system with zero-water exchange. Keywords: Condition factor, Fulton's cube law, Growth, Production, Survival, Zero-water exchange","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136370535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.126946-10
T. N. Vinay, P. K. Patil, S. Suvana, R. Aravind, S. Avunje, A. Panigrahi, C. P. Balasubramanian
The effects of salinity adaptation on gut microbiota of juvenile Indian white shrimp, Penaeus indicus H. Milne Edwards, 1837 was analysed in this experiment. Intestines of shrimps adapted to two different salinities were examined using 16S rRNA amplicon sequencing. At all salinity levels, the dominant phyla recorded were Proteobacteria followed by Bacteroidota and Fusobacteriota. However, as the salinity decreased, abundance of Proteobacteria increased while richness of Bacteroidota and Fusobacteriota decreased significantly. At genus level, salinity reduction increased the abundance of Vibrio and Photobacterium; while it decreased the abundance of Spongiimonas and Hypnocyclicus. The survival of animals in both the groups was not affected but the weight gain was less in low saline group (5 ppt). The results confirm the influence of salinity in rearing water on the intestinal microbiota of shrimp. Keywords: Aquaculture, Bacteroidota, Fusobacteriota, Hypnocyclicus, Proteobacteria, Salinity, Spongiimonas
本试验分析了盐度适应对印度白对虾幼虾(Penaeus indicus H. Milne Edwards, 1837)肠道微生物群的影响。采用16S rRNA扩增子测序技术检测了适应两种不同盐度的虾的肠道。在所有盐度水平下，记录的优势门是变形杆菌门，其次是拟杆菌门和梭杆菌门。然而，随着盐度的降低，变形菌门的丰度增加，而拟杆菌门和梭杆菌门的丰度显著降低。在属水平上，盐度降低增加了弧菌和光细菌的丰度;同时降低了海绵单胞菌和催眠单胞菌的丰度。两组动物的存活率均未受影响，但低盐水组(5ppt)体重增加较少。研究结果证实了养殖水体盐度对对虾肠道菌群的影响。关键词:水产养殖，拟杆菌门，梭杆菌门，催眠菌门，变形菌门，盐度，海绵菌
{"title":"Effect of salinity variation on intestinal microbiota of the Indian white shrimp Penaeus indicus H. Milne Edwards, 1837","authors":"T. N. Vinay, P. K. Patil, S. Suvana, R. Aravind, S. Avunje, A. Panigrahi, C. P. Balasubramanian","doi":"10.21077/ijf.2023.70.2.126946-10","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.126946-10","url":null,"abstract":"The effects of salinity adaptation on gut microbiota of juvenile Indian white shrimp, Penaeus indicus H. Milne Edwards, 1837 was analysed in this experiment. Intestines of shrimps adapted to two different salinities were examined using 16S rRNA amplicon sequencing. At all salinity levels, the dominant phyla recorded were Proteobacteria followed by Bacteroidota and Fusobacteriota. However, as the salinity decreased, abundance of Proteobacteria increased while richness of Bacteroidota and Fusobacteriota decreased significantly. At genus level, salinity reduction increased the abundance of Vibrio and Photobacterium; while it decreased the abundance of Spongiimonas and Hypnocyclicus. The survival of animals in both the groups was not affected but the weight gain was less in low saline group (5 ppt). The results confirm the influence of salinity in rearing water on the intestinal microbiota of shrimp. Keywords: Aquaculture, Bacteroidota, Fusobacteriota, Hypnocyclicus, Proteobacteria, Salinity, Spongiimonas","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136369533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.114696-16
K. Rejula, V. K. Sajesh, Monalisha Devi Sukham, S. Ashaletha, Nikita Gopal, A. K. Mohanty, C. N. Ravishankar
The right to fish carries along with it an obligation to do fishing responsibly which is the fundamental principle of the FAO Code of Conduct for Responsible Fisheries (FAO-CCRF). There exist challenges in implementation of responsible fishing practices globally and hence appropriate communication, knowledge mobilisation and education across stakeholders are to be encouraged to achieve effective fisheries management systems. Understanding the attitude of fishers is important in achieving the goal of conservation and sustainable use of the oceans, seas and marine resources. Attitude act as the determinant of converting covert behaviour into overt action. It is rooted in motivation, which provides a meaningful background for individuals’ overt behaviour. Perspective of fishers with respect to sustainable fishery systems is an important aspect to be studied in fishery governance. To measure this psychological construct, we need to use, standardised scales. There is no standardised scale available for measuring attitude of fishers towards responsible fishing. This paper discusses the development of Responsible Fishing Attitude (RFA) scale using Likert type scale development methodology. Conceptual dimensions of responsible fishing were delineated for attitude statement generation. The final Likert scale was having 13 statements with moderately high reliability and validity and can be administered to respondents on a 5-point continuum. Keywords: Fishery extension, Likert scale, Responsible fishing, Scale development
{"title":"Development of a scale to measure fishers’ attitude towards responsible fishing","authors":"K. Rejula, V. K. Sajesh, Monalisha Devi Sukham, S. Ashaletha, Nikita Gopal, A. K. Mohanty, C. N. Ravishankar","doi":"10.21077/ijf.2023.70.2.114696-16","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.114696-16","url":null,"abstract":"The right to fish carries along with it an obligation to do fishing responsibly which is the fundamental principle of the FAO Code of Conduct for Responsible Fisheries (FAO-CCRF). There exist challenges in implementation of responsible fishing practices globally and hence appropriate communication, knowledge mobilisation and education across stakeholders are to be encouraged to achieve effective fisheries management systems. Understanding the attitude of fishers is important in achieving the goal of conservation and sustainable use of the oceans, seas and marine resources. Attitude act as the determinant of converting covert behaviour into overt action. It is rooted in motivation, which provides a meaningful background for individuals’ overt behaviour. Perspective of fishers with respect to sustainable fishery systems is an important aspect to be studied in fishery governance. To measure this psychological construct, we need to use, standardised scales. There is no standardised scale available for measuring attitude of fishers towards responsible fishing. This paper discusses the development of Responsible Fishing Attitude (RFA) scale using Likert type scale development methodology. Conceptual dimensions of responsible fishing were delineated for attitude statement generation. The final Likert scale was having 13 statements with moderately high reliability and validity and can be administered to respondents on a 5-point continuum. Keywords: Fishery extension, Likert scale, Responsible fishing, Scale development","PeriodicalId":50372,"journal":{"name":"Indian Journal of Fisheries","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136370533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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