Md. Abdul Gofur Khan, S. M. Galib, M. Hasnath, Md. Rubel Mia, Raihan H. Kibria
{"title":"Exotic fish and decreasing habitats vis-à-vis conservation of freshwater fish biodiversity of Bangladesh","authors":"Md. Abdul Gofur Khan, S. M. Galib, M. Hasnath, Md. Rubel Mia, Raihan H. Kibria","doi":"10.17017/j.fish.397","DOIUrl":"https://doi.org/10.17017/j.fish.397","url":null,"abstract":"Multiple stressors including biological invasion have long been recognised in conservation of freshwater fish biodiversity. Works in this line have, however, been still scanty in Asia and South America – the continents known for rich biodiversity. In this study, the first of its type in Bangladesh, impacts of exotic fish and declining habitats on native fishes have been investigated. Regression and correlation analyses of 16 years production data of ponds, practically the only habitat where exotic fish are cultured commonly with indigenous ones, reveals that a maximum of 25% of the abundance decrease of native fish could be due to the effects of five commonly cultured exotic fish. Rest of the decline might largely be due to shrinkage, degradation, and destruction of habitats. Inland habitats other than ponds shrink, commonly, by about 80 % during the dry season, and most rivers are heavily polluted except for the brief mid rainy season. Decline in native fish populations may result in reduced genetic diversity. Another potential danger is the probable genetic introgression from the less fit hatchery-originated fish with the wild ones. The study concludes that the native freshwater fishes are endangered by declining habitats, exotic fishes, genetic consequences of hatchery supplementation","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"58 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87339591","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}
{"title":"New record of spot-tail sleeper ray Narke dipterygia (Bloch and Schneider, 1801) (Elasmobranchii, Torpediniformes, Narkidae) from the coast of Gujarat, India","authors":"Dhaval Bhatt, Santoshkumar Singh, P. Mankodi","doi":"10.17017/j.fish.342","DOIUrl":"https://doi.org/10.17017/j.fish.342","url":null,"abstract":"Narke dipterygia (Bloch and Schneider, 1801), commonly known as numb ray, is a widely distributed species in the Arabian Sea and South-East Asian countries. It has been recorded from Oman, Pakistan, Sri Lanka, Malaysia, Singapore, Indonesia, Thailand, Viet Nam, China, Taiwan Province of China and Japan. In India, majority of the findings of the species is from east and west coasts of India, only two records were reported namely Bombay of Maharashtra and Kerala. The present paper confirms the presence of N. dipterygia for the first time from Gujarat coast located on the west coast of India. The diagnostic characteristics and remarks on the taxonomy and distribution of N. dipterygia have been described in this paper.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"82 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74527306","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}
T. Panda, N. Mishra, S. Rahimuddin, B. Pradhan, R. Mohanty
{"title":"Traditional fish processing in Odisha, India","authors":"T. Panda, N. Mishra, S. Rahimuddin, B. Pradhan, R. Mohanty","doi":"10.17017/j.fish.271","DOIUrl":"https://doi.org/10.17017/j.fish.271","url":null,"abstract":"The present study documents the traditional fish drying techniques used by the fisher folk communities of Bhadrak district, Odisha, India. Information on local knowledge and the use of different fish drying methods within the study area was collected from 72 fisher folk through semi-structured questionnaires, free interviews, informal conversations and direct observations. The results showed that sun drying was the most extensively used method for fish preservation. About 19.4% of the informants preferred to spread the fishes directly on earth, 34.8% on the mat, 5.5% on palm leaves, 29.2 % over bamboo bars and 11.2% followed interlocking of snouts/jaws on bamboo sticks. Almost all the fish drying devices are handmade with bamboo, wooden pole and sometimes nylon threads following traditional technologies. The quality of the dry fish could be improved by educating fishermen on hygiene, sanitation, use of good water quality and raw materials for processing. In this context, the low-cost solar dryer can be constructed by using locally available materials, thus preventing contamination and dependence on weather conditions. The dry fish production can play a crucial role in socio-economic upliftment, employment generation and poverty alleviation particularly to women as they depend on it directly for their livelihoods.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"74 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90262011","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}
A. Roy, T. Abraham, J. Singha, R. B. Julinta, S. Boda
{"title":"Efficacy of oral oxytetracycline therapy against Aeromonas caviae infection in Nile tilapia Oreochromis niloticus (L.) juveniles","authors":"A. Roy, T. Abraham, J. Singha, R. B. Julinta, S. Boda","doi":"10.17017/j.fish.361","DOIUrl":"https://doi.org/10.17017/j.fish.361","url":null,"abstract":"The present study evaluated the effects of Aeromonas caviae infection and oral oxytetracycline (OTC) therapy based on the histopathological alterations, serum creatinine, and antibiotic resistance in the gut-bacteria of Oreochromis niloticus. Ten days of OTC therapy at 2 g kg feed–1 at 3% body weight reduced the mortalities to 30% compared to 50% in the abrasion-immersion (AI) challenged and untreated group. The feed intake was reduced in challenged fish, which consumed about 42 mg OTC against the recommended minimum therapeutic dose of 55 mg kg biomass–1 day–1. The OTC-resistant gut bacteria increased by 5.84 folds in 10 days of OTC feeding. The fish kidney exhibited glomerulopathy, nephropathy including nephritis, and lost its structural integrity within 5 days post-injection. An improved structural organization of glomerulus and renal tubules was noted with OTC therapy. Despite the improved kidney functions, as confirmed by the serum creatinine levels, the fish could not recuperate fully on day 21 post-OTC therapy. The initial high mortalities in A. caviae challenged fish suggested that the dose and feed ration used in this study was only partially effective. The findings of the present study may be useful while planning the mitigation strategies for disease management.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"35 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87377890","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}
{"title":"Socio-economic status of fishermen community of Wular Lake in district Bandipora of Jammu and Kashmir","authors":"Neelofer Habib, Salima Jan","doi":"10.17017/j.fish.357","DOIUrl":"https://doi.org/10.17017/j.fish.357","url":null,"abstract":"The present study investigates the socio-economic status of fishermen community of Wular Lake in district Bandipora of Jammu and Kashmir. Data were collected through structured interview schedule from 150 respondents from fishermen community between July and September 2020. It was found that 34.7% of the respondents fall in to the age group of 41–50 years and 56.0% were married. Majority of the respondents were illiterate (61.3%) and over half of the respondents (59.3%) earned monthly Rs.1000–5000. The study also explored that 93.3% of the respondents lived in their owned houses. The family size of fishing community was usually consisted of 7–10 members and 51.3% of them lived in a joint family system. However, most of them (54.66%) were dependent on river/canal water as drinking source and 59.3% were having dry latrine. It may be concluded that the fishermen community in the study area was the disadvantaged group of the society. Government, NGOs and respective stakeholders should come forward to take proper and necessary steps to improve their living conditions.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"310 ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72441648","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}
{"title":"A comparative review on freshwater fish fauna between West Bengal and Odisha, two middle-east Indian states","authors":"A. Chanda, A. Jana","doi":"10.17017/j.fish.369","DOIUrl":"https://doi.org/10.17017/j.fish.369","url":null,"abstract":"The objective of the present study is the comparative revision of inland freshwater fish faunal diversity between West Bengal and Odisha, two states of middle-east India. Work is mainly based on the available published literature on the freshwater fish faunal diversity, checklist for fish, monograph of the area under study. Result reveals the existence of 345 species of fish belonging to 50 families under 14 orders. Analysis of data shows a slight similarity of freshwater fish faunal diversity between two states is quite expected because both the states differ in their physiography and ecology. The present report may serve as a helpful document for freshwater aquaculturists as well as fishery researchers for their future planning of research work on the subject of the study area.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"10 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81678169","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}
D. Paul, Mst. Tasnima Khatun, Md. Taskin Parvez, S. M. Haque, Z. Ahmed
{"title":"Length-weight relationships and growth pattern of Macrobrachium malcolmsonii (H. Milne-Edwards, 1844) from the river Old Brahmaputra, Bangladesh","authors":"D. Paul, Mst. Tasnima Khatun, Md. Taskin Parvez, S. M. Haque, Z. Ahmed","doi":"10.17017/j.fish.388","DOIUrl":"https://doi.org/10.17017/j.fish.388","url":null,"abstract":"Study of biological parameters of a species is important for its sustainable management. The length-weight relationships and growth patterns of Macrobrachium malcolmsonii (H. Milne-Edwards, 1844), collected from the river Old Brahmaputra in Bangladesh, were determined in this study based on 359 specimens (carapace length, CL: 11–90 mm; body weight, BW: 0.2–54.4 g) including 308 male and 351 female individuals. For both sexes, intercepts, slopes, and coefficients of determinations of regression analyses between CL and BW varied monthly. The lowest values of intercept (–11.51 and –11.65 for male and female respectively) was recorded in October whereas the highest values were recorded in January for male (–7.01) and March for female (–8.26 for female). The minimum coefficient of determination was 0.784 (for male) and 0.801 (for female) whereas the maximum coefficient of determination was recorded 0.971 (for male) and 0.970 (for female). For male, the b value at 95% Cl revealed that the growth in March, June, July, September and February were isometric and in April, May, October, November and January were allometric. Whereas for female, the growth in March, April, June, July, November, January and February were isometric and was allometric in May, September and October.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"5 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79919961","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}
{"title":"The distribution and population ecology of semaphore crab Ilyoplax sayajiraoi Trivedi, Soni, Trivedi and Vachhrajani 2015, on mud flat region of Gulf of Khambhat, Gujarat, India","authors":"Gargi K. Vaidya, K. Vachhrajani","doi":"10.17017/j.fish.205","DOIUrl":"https://doi.org/10.17017/j.fish.205","url":null,"abstract":"The semaphore crab Ilyoplax sayajiraoi is a newly discovered species distributed in the Gulf of Khambhat, Gujarat, India. Consequently, almost no information is available regarding its population structure. The distribution of species is limited to upper most reaches of the gulf and thus any alteration in the habitat will eventually affect its population. Studies on the population structure of I. sayajiraoi will provide baseline data for future studies and probably, it has potential to serve as a bioindicator species. Morphometric measurements of the carapace (width and length), cheliped and body weight were measured for specimens, collected monthly. The growth was not isometric, demonstrating a significant difference in carapace of males and females, giving sexual dimorphism. Relationship established between carapace width and weight indicate that species is allometric in nature. Sex ratio was 1.3 : 1 (M : F). Ovigerous female and juvenile recruitment showed a bimodal distribution pattern for maintaining the overall size of population.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"39 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81326287","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}
{"title":"Length-length, length-weight relationship and condition factor of an ecological invader, Cyprinus carpio (Linneaus, 1758) from Manasbal Lake of Kashmir Himalaya, India","authors":"S. Andrabi, M. Parveen, Yahya Bakhtiyar","doi":"10.17017/j.fish.330","DOIUrl":"https://doi.org/10.17017/j.fish.330","url":null,"abstract":"The common carp Cyprinus carpio is a well-known invasive species. A total of 472 specimens of C. carpio (8.6–35 cm, 10.5–1000 g) were collected from Manasbal Lake of Kashmir Himalaya for this study between March 2018 and February 2020. A strong correlation between the respective parameters of length-length and length-weight with r and R2 values approaching to 1 in both. The regression analysis indicated negative allometric growth for both sexes. For female, b value ranged from 2.04 (in spring) to 2.80 (in summer) whereas for male, it varied from 1.99 (in spring) to 2.99 (in summer). The value of Fulton’s (K) and relative (Kn) condition factors were greater than 1 in every season for both sexes which indicated that C. carpio population in the Manasbal Lake is in a good health condition and the water quality parameters along with other respective factors are favourable for successful thriving of this fish in the lake. The present study will be helpful to develop future strategies in terms of sustainable management of invasive C. carpio in the Manasbal Lake and similar water bodies.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"20 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83356358","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}
{"title":"New record of white-spotted pufferfish Arothron hispidus (Linnaeus, 1758) (Tetraodontiformes: Tetraodontidae) from West Bengal, India, compared with other Arothron species occurring in India","authors":"S. S. Mishra, Priyankar Chakraborty, K. Yardi","doi":"10.17017/j.fish.332","DOIUrl":"https://doi.org/10.17017/j.fish.332","url":null,"abstract":"Two specimens of Arothron hispidus (Linnaeus, 1758) (111.7 – 112.8 mm in standard length), was collected in May 2019 from the Frasergunj fishing harbour in West Bengal, eastern India. Herein, we report this species for the first time from West Bengal. We have described the diagnostic features of the collected specimens and compared them with other Arothron species found in Indian waters.","PeriodicalId":55944,"journal":{"name":"Journal of Fisheries","volume":"46 1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78034814","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}