Pub Date : 2023-06-30DOI: 10.21077/ijf.2023.70.2.131861-20
Jay Prakash Bhatt, Kumar Manish
Snow trout (Schizothorax richardsonii Gray, 1832) occupies the Himalayan domain from the foothills to 3000 m and inhabits all types of water bodies, like rivers, rivulets, lakes, and reservoirs. It is a rheophilic fish species that can thrive in a wide range of ecological and climatic conditions. Globally snow trout is now a 'threatened' species. Invasion of its natural habitats by exotic trouts, river valley hydropower projects as well as destructive fishing in the Himalayan region have long been attributed to the vulnerability of this species. The intrinsic characteristics of snow trout also make it a weak competitor in the Himalayan rivers. Climate change coupling with above mentioned threats poses a new challenge for Himalayan fish, especially snow trout, as it is confined to the Himalaya. Given these threats, an intense drive for snow trout conservation is urgently required. This contribution is an attempt to find out solution to this fact. In line with the opinions of ecologists and conservationists, we suggest a few measures like setting up free-flowing and undammed rivers as 'fish conservation zones', environmental flow to downstream areas of existing dams, prohibition of stocking of exotic fish species in natural habitats and use of hatcheries for stocking and restocking of snow trout in the rivers for the conservation of the species. Keywords: Climate change, Conservation, Himalaya, Hatcheries, Snow trout, Threats, Vulnerable
{"title":"A review on the threatened species of snow trout Schizothorax richardsonii Gray, 1832 (Cypriniformes: Cyprinidae): From the climate change and conservation perspectives","authors":"Jay Prakash Bhatt, Kumar Manish","doi":"10.21077/ijf.2023.70.2.131861-20","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.131861-20","url":null,"abstract":"Snow trout (Schizothorax richardsonii Gray, 1832) occupies the Himalayan domain from the foothills to 3000 m and inhabits all types of water bodies, like rivers, rivulets, lakes, and reservoirs. It is a rheophilic fish species that can thrive in a wide range of ecological and climatic conditions. Globally snow trout is now a 'threatened' species. Invasion of its natural habitats by exotic trouts, river valley hydropower projects as well as destructive fishing in the Himalayan region have long been attributed to the vulnerability of this species. The intrinsic characteristics of snow trout also make it a weak competitor in the Himalayan rivers. Climate change coupling with above mentioned threats poses a new challenge for Himalayan fish, especially snow trout, as it is confined to the Himalaya. Given these threats, an intense drive for snow trout conservation is urgently required. This contribution is an attempt to find out solution to this fact. In line with the opinions of ecologists and conservationists, we suggest a few measures like setting up free-flowing and undammed rivers as 'fish conservation zones', environmental flow to downstream areas of existing dams, prohibition of stocking of exotic fish species in natural habitats and use of hatcheries for stocking and restocking of snow trout in the rivers for the conservation of the species. Keywords: Climate change, Conservation, Himalaya, Hatcheries, Snow trout, Threats, Vulnerable","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":"136369537","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.2023.70.2.132266-17
R. K. Renjith, None Paras Nath Jha, S. Chinnadurai, M. V. Baiju, Saly N. Thomas
Depredation by crabs can have a negative impact on marine gillnet fishery. Despite this fact, limited studies are attempted to evaluate depredation. The present study is the first attempt to evaluate the qualitative and quantitative effects of crab depredation on marine gillnet fishery. Experimental gillnetting was conducted onboard F V Sagar Harita from February 2017 to January 2018 along the south-west Indian coast. Depredation by the deepsea swimming crab Charybdis smithii caused intentional discard of Indian mackerel (17.59%), kawakawa (14.77%), shrimp scad (10.74%) and horse mackerel (10.02%). Financial loss due to depredation was high for Indian mackerel (19.99%), followed by shrimp scad (19.17%), kawakawa (14.77%) and horse mackerel (14.16%). A total of ₹2554.30 per operation was lost due to crab depredation. C. smithii showed a preference towards scombrids (Indian mackerel and kawakawa) over carangids (shrimp scad and horse mackerel) due to the inherent flavour and texture of scombrids. Incidence of depredation were found exclusively during June to September (monsoon season). Keywords: Crab, Depredation, Economic loss, Fishery, Marine gillnet
螃蟹的捕食会对海洋刺网渔业产生负面影响。尽管如此，有限的研究试图评估掠夺。本研究首次尝试从定性和定量的角度评价螃蟹捕食对海洋刺网渔业的影响。2017年2月至2018年1月，在印度西南海岸的F V Sagar Harita上进行了实验刺网。在深海游蟹的捕食下，印度鲭鱼(17.59%)、川川鲭鱼(14.77%)、虾scad(10.74%)和马鲭鱼(10.02%)被故意丢弃。掠夺造成的经济损失最高的是印度鲭鱼(19.99%)，其次是虾(19.17%)、川河鲭鱼(14.77%)和马鲛鱼(14.16%)。由于螃蟹的掠夺，每次手术总共损失了2554.30卢比。C. smithii表现出对鲭鱼(印度鲭鱼和川川鲭鱼)的偏好，而不是carangids(虾渣和马鲭鱼)，因为鲭鱼固有的味道和质地。在6月至9月(季风季节)发生掠夺事件。关键词:螃蟹，掠夺，经济损失，渔业，海洋刺网
{"title":"Investigations on depredation by the deepsea swimming crab Charybdis smithii, during experimental gillnetting along the south-west coast of India","authors":"R. K. Renjith, None Paras Nath Jha, S. Chinnadurai, M. V. Baiju, Saly N. Thomas","doi":"10.21077/ijf.2023.70.2.132266-17","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.132266-17","url":null,"abstract":"Depredation by crabs can have a negative impact on marine gillnet fishery. Despite this fact, limited studies are attempted to evaluate depredation. The present study is the first attempt to evaluate the qualitative and quantitative effects of crab depredation on marine gillnet fishery. Experimental gillnetting was conducted onboard F V Sagar Harita from February 2017 to January 2018 along the south-west Indian coast. Depredation by the deepsea swimming crab Charybdis smithii caused intentional discard of Indian mackerel (17.59%), kawakawa (14.77%), shrimp scad (10.74%) and horse mackerel (10.02%). Financial loss due to depredation was high for Indian mackerel (19.99%), followed by shrimp scad (19.17%), kawakawa (14.77%) and horse mackerel (14.16%). A total of ₹2554.30 per operation was lost due to crab depredation. C. smithii showed a preference towards scombrids (Indian mackerel and kawakawa) over carangids (shrimp scad and horse mackerel) due to the inherent flavour and texture of scombrids. Incidence of depredation were found exclusively during June to September (monsoon season). Keywords: Crab, Depredation, Economic loss, Fishery, Marine gillnet","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":"136369541","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.2023.70.2.132270-12
Zouhir Zeghdani, Zehira Ait Aissa, Lyna Kherfallah, Nadir Bouchema, Rachida Gherbi, Zouhir Ramdane
This study reports for the first time, the relationship between microplastic ingestion and biological parameters in Sardinella aurita and Lithognathus mormyrus from the Gulf of Bejaia, Algeria. Gastrointestinal tracts content of 144 fishes belonging to two different habitats (pelagic and demersal) were examined for microplastics contamination. Our results showed that 74.30% of individuals ingested microplastics. The most common colour of plastic particles was blue (49% in S. aurita and 30% in L. mormyrus) and the most of microplastics extracted from gastrointestinal tracts of samples were fibers (71.64%). There was no significant relationship between age and Fulton’s factors of both the species and the quantity of microplastics ingested by them. Keywords: Biological parameters, Fish age, Gastrointestinal tracts, Marine pollution, Plastic particles
{"title":"Microplastic ingestion in Sardinella aurita Valenciennes, 1847 and Lithognathus mormyrus (Linnaeus, 1758) along the Gulf of Bejaia, Algeria","authors":"Zouhir Zeghdani, Zehira Ait Aissa, Lyna Kherfallah, Nadir Bouchema, Rachida Gherbi, Zouhir Ramdane","doi":"10.21077/ijf.2023.70.2.132270-12","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.132270-12","url":null,"abstract":"This study reports for the first time, the relationship between microplastic ingestion and biological parameters in Sardinella aurita and Lithognathus mormyrus from the Gulf of Bejaia, Algeria. Gastrointestinal tracts content of 144 fishes belonging to two different habitats (pelagic and demersal) were examined for microplastics contamination. Our results showed that 74.30% of individuals ingested microplastics. The most common colour of plastic particles was blue (49% in S. aurita and 30% in L. mormyrus) and the most of microplastics extracted from gastrointestinal tracts of samples were fibers (71.64%). There was no significant relationship between age and Fulton’s factors of both the species and the quantity of microplastics ingested by them. Keywords: Biological parameters, Fish age, Gastrointestinal tracts, Marine pollution, Plastic particles","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":"136369538","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.2023.70.2.129523-3
Ali Sepahi, Saeid Gorgin, Rahman Patimar, Ali Sadough Niri
Tigertooth croaker (Otolithes ruber) fishing has increased recently in southern Iran due to its economic value. In the present study, O. ruber gillnets with opening mesh sizes of 73, 85 and 90 mm were used to assess the selectivity of the nets. For this purpose, three panels each of commercial nets having mesh sizes of 73, 85 and 90 mm, were connected which formed an experimental net for sampling from January to May 2020. A total of 619 specimens of O. ruber were caught and the selectivity curves were plotted using the Sechin method. Results showed that the mean total lengths of O. ruber caught with mesh sizes of 73, 85 and 90 cm were, 26.89 ± 4.00; 35.33 ± 3.43, and 37.05 ± 3.32 cm, respectively. Considering the length at sexual maturity of 40 cm, it seems that gillnet with mesh size of 90 cm is the most suitable fishing net for catching the species. Keywords: Mesh size, Otolithes ruber, Sechin method, Selectivity curves
{"title":"Selectivity of tigertooth croaker (Otolithes ruber) gillnet in fishing grounds of Oman Sea, Iran","authors":"Ali Sepahi, Saeid Gorgin, Rahman Patimar, Ali Sadough Niri","doi":"10.21077/ijf.2023.70.2.129523-3","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.129523-3","url":null,"abstract":"Tigertooth croaker (Otolithes ruber) fishing has increased recently in southern Iran due to its economic value. In the present study, O. ruber gillnets with opening mesh sizes of 73, 85 and 90 mm were used to assess the selectivity of the nets. For this purpose, three panels each of commercial nets having mesh sizes of 73, 85 and 90 mm, were connected which formed an experimental net for sampling from January to May 2020. A total of 619 specimens of O. ruber were caught and the selectivity curves were plotted using the Sechin method. Results showed that the mean total lengths of O. ruber caught with mesh sizes of 73, 85 and 90 cm were, 26.89 ± 4.00; 35.33 ± 3.43, and 37.05 ± 3.32 cm, respectively. Considering the length at sexual maturity of 40 cm, it seems that gillnet with mesh size of 90 cm is the most suitable fishing net for catching the species. Keywords: Mesh size, Otolithes ruber, Sechin method, Selectivity curves","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":"136369539","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.2023.70.2.123116-19
Anisha Valsalam, K. V. Rajendran, Pooja Vinde, Megha Kadam Bedekar
DNA vaccines are the most essential tool of the disease prevention strategy. In the present study, cloning of a heterologous fusion gene involving glyceraldehyde 3-phosphate dehydrogenase and interferon gamma (GAPDH-IFN) was conceptualised. Cloning was tried using four distinct transformation techniques viz. InstAclone PCR Cloning kit (Fermentas, USA); CaCl2 transformation protocol; Clontech stellar competent cells protocol and PEG 8000-mediated transformation method, for the heterologous GAPDH-IFN fusion gene using DH5α strain of Escherichia coli. The first three methods were found to be unsuitable, and the PEG 8000-mediated transformation method yielded positive clones. Keywords: DNA vcaccine, Edwardsiella tarda, Fusion genes, Labeo rohita, PEG 8000, Transformation methods
{"title":"Optimisation of transformation in the heterologous fusion gene GAPDH-IFN cloning using DH5α strain of Escherichia coli","authors":"Anisha Valsalam, K. V. Rajendran, Pooja Vinde, Megha Kadam Bedekar","doi":"10.21077/ijf.2023.70.2.123116-19","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.123116-19","url":null,"abstract":"DNA vaccines are the most essential tool of the disease prevention strategy. In the present study, cloning of a heterologous fusion gene involving glyceraldehyde 3-phosphate dehydrogenase and interferon gamma (GAPDH-IFN) was conceptualised. Cloning was tried using four distinct transformation techniques viz. InstAclone PCR Cloning kit (Fermentas, USA); CaCl2 transformation protocol; Clontech stellar competent cells protocol and PEG 8000-mediated transformation method, for the heterologous GAPDH-IFN fusion gene using DH5α strain of Escherichia coli. The first three methods were found to be unsuitable, and the PEG 8000-mediated transformation method yielded positive clones. Keywords: DNA vcaccine, Edwardsiella tarda, Fusion genes, Labeo rohita, PEG 8000, Transformation methods","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":"136370534","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.2023.70.2.119886-6
G. Barlaya, C. H. Raghavendra, B. S. Ananda Kumar, P. Basumatary, K. Hemaprasanth
Effect of different broodstock diets on breeding performance of the critically endangered peninsular carp Hypselobarbus pulchellus (Day, 1870) was evaluated. Male and female fish were reared in earthen ponds and fed one of the following diets viz. (i) Control - Fishmeal based feed (crude protein, CP- 35%); (ii) Control feed supplemented at 2% with a commercial product used for lipid regulation in poultry (LC feed) and (iii) Specially formulated diet (CP 35%) with horse gram and black gram in addition to fishmeal (PB feed). Breeding trials were first conducted in 2019. No significant difference in fecundity was recorded among fish from different groups. The experiment was repeated in 2020, where, the Control feed was fed to fish maintained in a pond with aquatic weed Vallisneria spiralis (C+V treatment). Highest relative fecundity and spawn to fry survival was obtained with C+V treatment, there being no significant difference among other breeding performance parameters between treatments. The study indicated that the presence of submerged aquatic plants in the culture environment improves the breeding performance of H. pulchellus. Keywords: Broodstock diet, Fecundity, Induced breeding, Puntius pulchellus
{"title":"Effect of different broodstock diets on breeding performance of the critically endangered peninsular carp Hypselobarbus pulchellus (Day, 1870)","authors":"G. Barlaya, C. H. Raghavendra, B. S. Ananda Kumar, P. Basumatary, K. Hemaprasanth","doi":"10.21077/ijf.2023.70.2.119886-6","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.119886-6","url":null,"abstract":"Effect of different broodstock diets on breeding performance of the critically endangered peninsular carp Hypselobarbus pulchellus (Day, 1870) was evaluated. Male and female fish were reared in earthen ponds and fed one of the following diets viz. (i) Control - Fishmeal based feed (crude protein, CP- 35%); (ii) Control feed supplemented at 2% with a commercial product used for lipid regulation in poultry (LC feed) and (iii) Specially formulated diet (CP 35%) with horse gram and black gram in addition to fishmeal (PB feed). Breeding trials were first conducted in 2019. No significant difference in fecundity was recorded among fish from different groups. The experiment was repeated in 2020, where, the Control feed was fed to fish maintained in a pond with aquatic weed Vallisneria spiralis (C+V treatment). Highest relative fecundity and spawn to fry survival was obtained with C+V treatment, there being no significant difference among other breeding performance parameters between treatments. The study indicated that the presence of submerged aquatic plants in the culture environment improves the breeding performance of H. pulchellus. Keywords: Broodstock diet, Fecundity, Induced breeding, Puntius pulchellus","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":"136370277","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.2023.70.2.120576-2
Jaspreet Singh, Kamal Sarma, A. K. Jaiswar, A. S. Mohite, S. K. AHIRWAL, R. Samanta, Latha Shenoy
Trawl fishing is widely recognised as the most productive and industrious fishing method in the world. Due to the importance of trawl fisheries along the Ratnagiri coast of Maharashtra, the present comparative study was undertaken on single and multiday trawl fishing in the region. In this study, monthly variations in fishing depth, catch per hour (CPH), discard per hour (DPH), spatio-temporal species distribution and spatial prediction of catch-discard of 136 trawl hauls were analysed. Single and multiday trawlers were operated from 15°53’24’’N to 18°00’36’’N latitude and 72°55’55’’E to 73°25’48’’E longitude within a depth range of 10 to 64 m in the Arabian Sea. For the multiday trawlers, maximum CPH of 68.30 kg h-1 was recorded in October 2015, while single day trawlers recorded CPH of 42.70 kg h-1 in November 2015. Average DPH for multiday and single day trawlers were recorded as 7.66 and 3.84 kg h-1 respectively. The study found that CPH and DPH were significantly (p<0.05) higher in multiday trawlers than single day trawlers. Based on spatial mapping, high fishing pressure was observed in the area south-west off Ratnagiri. Our results highlighted the need for suitable strategies for conservation and management of fisheries resources to achieve long-term sustainability in the region. Keywords: Catch, Discard, Diversity, GIS mapping
拖网捕鱼被广泛认为是世界上最具生产力和最勤劳的捕鱼方法。由于马哈拉施特拉邦Ratnagiri沿岸拖网渔业的重要性，本研究对该地区的单日和多日拖网捕鱼进行了比较研究。本文对136条拖网渔船的捕捞深度、每小时渔获量(CPH)、每小时丢弃量(DPH)、物种时空分布及丢弃量的空间预测进行了分析。在阿拉伯海，单拖网渔船和多日拖网渔船的作业范围为北纬15°53 ' 24 "至18°00 ' 36 "，东经72°55 ' 55 "至73°25 ' 48 "，作业深度为10至64米。多日拖网渔船在2015年10月录得最大CPH 68.30 kg h-1，而单日拖网渔船在2015年11月录得最大CPH 42.70 kg h-1。多日拖网渔船和单日拖网渔船的平均DPH分别为7.66和3.84 kg h-1。研究发现，多日拖网渔船的CPH和DPH显著高于单日拖网渔船(p<0.05)。根据空间测绘，在Ratnagiri西南海域观察到高捕鱼压力。我们的研究结果突出表明，需要制定适当的战略来养护和管理渔业资源，以实现该区域的长期可持续性。关键词:捕获，丢弃，多样性，GIS制图
{"title":"Comparative footprint studies of single and multiday trawl fishing along Ratnagiri coast, Maharashtra, India","authors":"Jaspreet Singh, Kamal Sarma, A. K. Jaiswar, A. S. Mohite, S. K. AHIRWAL, R. Samanta, Latha Shenoy","doi":"10.21077/ijf.2023.70.2.120576-2","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.120576-2","url":null,"abstract":"Trawl fishing is widely recognised as the most productive and industrious fishing method in the world. Due to the importance of trawl fisheries along the Ratnagiri coast of Maharashtra, the present comparative study was undertaken on single and multiday trawl fishing in the region. In this study, monthly variations in fishing depth, catch per hour (CPH), discard per hour (DPH), spatio-temporal species distribution and spatial prediction of catch-discard of 136 trawl hauls were analysed. Single and multiday trawlers were operated from 15°53’24’’N to 18°00’36’’N latitude and 72°55’55’’E to 73°25’48’’E longitude within a depth range of 10 to 64 m in the Arabian Sea. For the multiday trawlers, maximum CPH of 68.30 kg h-1 was recorded in October 2015, while single day trawlers recorded CPH of 42.70 kg h-1 in November 2015. Average DPH for multiday and single day trawlers were recorded as 7.66 and 3.84 kg h-1 respectively. The study found that CPH and DPH were significantly (p<0.05) higher in multiday trawlers than single day trawlers. Based on spatial mapping, high fishing pressure was observed in the area south-west off Ratnagiri. Our results highlighted the need for suitable strategies for conservation and management of fisheries resources to achieve long-term sustainability in the region. Keywords: Catch, Discard, Diversity, GIS mapping","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":"136370529","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}
Reservoirs are major inland water resources benefitting society through multiple ecosystem services, including fish production. However, the scope of the reservoirs in India is yet to be explored for its full fisheries potential and the scientific/management personnel are engaged in bridging the yield gap. This paper reviews the research progress made in Indian reservoir fisheries from 1998 to 2019 as a case and compares with global studies using bibliometric indicators extracted from the Web of Science (WoS) database. A total of 7607 papers published globally, mainly by the USA (2662 papers), Brazil (874 papers), and People’s Republic China (678 papers) were considered. India produced 162 publications (2.13% of total papers) during the period mainly authored by research institutes of Indian Council of Agricultural Research (ICAR). The predominant research subjects both globally and in India were ‘Environmental Sciences, Ecology, Marine and Freshwater Biology, and Fisheries’, though the composition varies. The trend in the reservoir research output indicated a shift towards applied research such as spatial planning and cage culture which offers scope for the international scientific fraternity to collaborate with Indian counterparts to solve common researchable issues. Indian authors have collaborated with 29 countries on various researchable issues, and preferred Indian journals for publications. The reservoir research in India is mainly funded by public sources and the extent of work carried out on a particular geographical area depends on the nearness to laboratories and availability of the infrastructure. This study advocates that creation of research network at pan-India level in collaboration with international partners would benefit the reservoir fisheries research in the future. This analysis including the trend and dynamics of Indian reservoir fisheries portrayed as a case study would aid in prioritising research efforts for the development of the sector in India and elsewhere. Keywords: Bibliometric indicators, Collaboration, Reservoir fisheries, Scientometrics, Web of Science
水库是主要的内陆水资源，通过多种生态系统服务，包括鱼类生产，造福社会。然而，印度水库的范围还有待探索，以充分发挥其渔业潜力，科学/管理人员正在努力弥补产量差距。本文以1998年至2019年印度水库渔业为例，回顾了印度水库渔业的研究进展，并利用从Web of Science (WoS)数据库中提取的文献计量指标与全球研究进行了比较。全球共发表论文7607篇，主要包括美国(2662篇)、巴西(874篇)和中华人民共和国(678篇)。在此期间，印度发表了162篇论文(占论文总数的2.13%)，主要由印度农业研究委员会(ICAR)的研究机构撰写。全球和印度的主要研究科目是“环境科学、生态学、海洋和淡水生物学以及渔业”，尽管组成各不相同。水库研究成果的趋势表明向空间规划和笼文化等应用研究的转变，这为国际科学界与印度同行合作解决共同的可研究问题提供了空间。印度作者在各种可研究的问题上与29个国家合作，并且更喜欢在印度期刊上发表文章。印度的水库研究主要由公共资源资助，在特定地理区域开展的工作程度取决于是否靠近实验室和是否有基础设施。本研究主张与国际伙伴合作建立泛印度一级的研究网络将有利于未来的水库渔业研究。这一分析，包括作为案例研究的印度水库渔业的趋势和动态，将有助于确定研究工作的优先次序，促进印度和其他地方该部门的发展。关键词:文献计量指标，合作，水库渔业，科学计量学，Web of Science
{"title":"Scientometric profiling of reservoir fisheries research in India during 1998 – 2019, in comparison to the global scenario","authors":"Bhargavi Kanchi, P. Krishnan, Surekha Agarwal, Kantharajan G, Bhoomaiah D, Nayak B.B.","doi":"10.21077/ijf.2023.70.2.127648-1","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.127648-1","url":null,"abstract":"Reservoirs are major inland water resources benefitting society through multiple ecosystem services, including fish production. However, the scope of the reservoirs in India is yet to be explored for its full fisheries potential and the scientific/management personnel are engaged in bridging the yield gap. This paper reviews the research progress made in Indian reservoir fisheries from 1998 to 2019 as a case and compares with global studies using bibliometric indicators extracted from the Web of Science (WoS) database. A total of 7607 papers published globally, mainly by the USA (2662 papers), Brazil (874 papers), and People’s Republic China (678 papers) were considered. India produced 162 publications (2.13% of total papers) during the period mainly authored by research institutes of Indian Council of Agricultural Research (ICAR). The predominant research subjects both globally and in India were ‘Environmental Sciences, Ecology, Marine and Freshwater Biology, and Fisheries’, though the composition varies. The trend in the reservoir research output indicated a shift towards applied research such as spatial planning and cage culture which offers scope for the international scientific fraternity to collaborate with Indian counterparts to solve common researchable issues. Indian authors have collaborated with 29 countries on various researchable issues, and preferred Indian journals for publications. The reservoir research in India is mainly funded by public sources and the extent of work carried out on a particular geographical area depends on the nearness to laboratories and availability of the infrastructure. This study advocates that creation of research network at pan-India level in collaboration with international partners would benefit the reservoir fisheries research in the future. This analysis including the trend and dynamics of Indian reservoir fisheries portrayed as a case study would aid in prioritising research efforts for the development of the sector in India and elsewhere. Keywords: Bibliometric indicators, Collaboration, Reservoir fisheries, Scientometrics, Web of Science","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":"136369531","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.2023.70.2.132322-13
K. Sathish Kumar, J. Bindu, K. Elavarasan, Amjad K. Balange, L. Narasimhamurthy
Developing bioactive edible coatings is an emerging trend to improve nutritional value, food quality, and safety. The present work was undertaken to develop ready to disperse bioactive edible coating (BEC) powder from fish protein hydrolysate incorporated with chitosan and clove oil, and to evaluate their preservative effect (10 and 20% level) on tuna fillets during chilled storage at 4°C. Microbiological, biochemical, and sensory evaluation were carried out during 18 days of storage study. Aerobic plate count of tuna fillets treated with 10 and 20% BEC solutions showed 5.45±0.007 log cfu g-1 and 5.33±0.009 log cfu g-1, respectively at the end of storage, whereas the control sample reached 9.25±0.004 log cfu g-1. Among the BEC solution treated samples, 20% BEC solution treated sample had the lowest TBARS (Thiobarbituric acid reactive substances) value (1.68±0.04 mg MDA kg-1) followed by 10% BEC solution treated sample (1.93±0.02 mg MDA kg-1) at the end of the storage, while the control sample exceeded the acceptable limit (2.388±0.167248 mg MDA kg-1) on 9th day itself, which gave clear evidence that BEC solutions effectively extended the tuna fillet’s shelf-life. The overall study revealed that the sample treated with BEC solutions showed an excellent preservative effect on tuna fillets, which indicates the potential of combined use of these agents in food products. Keywords: Bioactive edible coating, Biochemical analysis, Chilled Storage, Sensory evaluation, Tuna fillets
{"title":"Preservative effect of ready to disperse bioactive edible coating powder from fish protein hydrolysate incorporated with chitosan and active clove oil on tuna fillets (Thunnus albacares) during chilled storage","authors":"K. Sathish Kumar, J. Bindu, K. Elavarasan, Amjad K. Balange, L. Narasimhamurthy","doi":"10.21077/ijf.2023.70.2.132322-13","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.132322-13","url":null,"abstract":"Developing bioactive edible coatings is an emerging trend to improve nutritional value, food quality, and safety. The present work was undertaken to develop ready to disperse bioactive edible coating (BEC) powder from fish protein hydrolysate incorporated with chitosan and clove oil, and to evaluate their preservative effect (10 and 20% level) on tuna fillets during chilled storage at 4°C. Microbiological, biochemical, and sensory evaluation were carried out during 18 days of storage study. Aerobic plate count of tuna fillets treated with 10 and 20% BEC solutions showed 5.45±0.007 log cfu g-1 and 5.33±0.009 log cfu g-1, respectively at the end of storage, whereas the control sample reached 9.25±0.004 log cfu g-1. Among the BEC solution treated samples, 20% BEC solution treated sample had the lowest TBARS (Thiobarbituric acid reactive substances) value (1.68±0.04 mg MDA kg-1) followed by 10% BEC solution treated sample (1.93±0.02 mg MDA kg-1) at the end of the storage, while the control sample exceeded the acceptable limit (2.388±0.167248 mg MDA kg-1) on 9th day itself, which gave clear evidence that BEC solutions effectively extended the tuna fillet’s shelf-life. The overall study revealed that the sample treated with BEC solutions showed an excellent preservative effect on tuna fillets, which indicates the potential of combined use of these agents in food products. Keywords: Bioactive edible coating, Biochemical analysis, Chilled Storage, Sensory evaluation, Tuna fillets","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":"136369534","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.2023.70.2.132421-14
A. Jeyakumari, L. Narasimha Murthy, S. Visnuvinayagam, K. S. S. Sarma, K. P. Rawat, None Shaikh Abdul Khader
Currently, there is an increasing demand for minimally processed or convenience food products without any quality loss. Electron Beam Irradiation (EBI) is a non-thermal processing technique used to preserve the nutrient value and shelf-life extension of food products. In the present study, the effect of electron beam irradiation on the quality of tilapia fish chunks was evaluated. Tilapia fish chunks were vacuum packed and exposed to 0, 2.0, and 4.0 kGy doses of electron beam irradiation and kept under chilled storage. Biochemical, microbiological, and sensory qualities were analysed for up to 41 days. pH (6.85 to 7.10), total volatile base nitrogen (TVB-N), peroxide value (PV) and thiobarbituric acid (TBA) content showed an increasing trend during storage. It was observed that TVB-N content was lower in the irradiated sample than control. Thiobarbituric acid reactive substances (TBARS) values were within the acceptable limits during storage. Microbiological analysis revealed that irradiated fish chunks had lower total plate count, Pseudomonas count and Brochothrix thermosphacta count compared to the control. The hydrogen sulfide formers count and Lactobacillus count were nil in the irradiated fish chunks. In terms of microbial and sensory qualities, it was found that electron beam irradiated samples had an extended shelf-life of 28-38 days (with respect to dose level), compared to the control which had a shelf-life of only 16 days. Keywords: Non-thermal processing, Peroxide value, Sensory qualities, Shelf-life, TBA, TBARS, TVB-N, Vacuum packing
{"title":"Effect of electron beam irradiation on the quality of vacuum-packed, chilled-stored tilapia fish chunks","authors":"A. Jeyakumari, L. Narasimha Murthy, S. Visnuvinayagam, K. S. S. Sarma, K. P. Rawat, None Shaikh Abdul Khader","doi":"10.21077/ijf.2023.70.2.132421-14","DOIUrl":"https://doi.org/10.21077/ijf.2023.70.2.132421-14","url":null,"abstract":"Currently, there is an increasing demand for minimally processed or convenience food products without any quality loss. Electron Beam Irradiation (EBI) is a non-thermal processing technique used to preserve the nutrient value and shelf-life extension of food products. In the present study, the effect of electron beam irradiation on the quality of tilapia fish chunks was evaluated. Tilapia fish chunks were vacuum packed and exposed to 0, 2.0, and 4.0 kGy doses of electron beam irradiation and kept under chilled storage. Biochemical, microbiological, and sensory qualities were analysed for up to 41 days. pH (6.85 to 7.10), total volatile base nitrogen (TVB-N), peroxide value (PV) and thiobarbituric acid (TBA) content showed an increasing trend during storage. It was observed that TVB-N content was lower in the irradiated sample than control. Thiobarbituric acid reactive substances (TBARS) values were within the acceptable limits during storage. Microbiological analysis revealed that irradiated fish chunks had lower total plate count, Pseudomonas count and Brochothrix thermosphacta count compared to the control. The hydrogen sulfide formers count and Lactobacillus count were nil in the irradiated fish chunks. In terms of microbial and sensory qualities, it was found that electron beam irradiated samples had an extended shelf-life of 28-38 days (with respect to dose level), compared to the control which had a shelf-life of only 16 days. Keywords: Non-thermal processing, Peroxide value, Sensory qualities, Shelf-life, TBA, TBARS, TVB-N, Vacuum packing","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":"136369536","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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