Bangladesh Journal of Fisheries最新文献_第5页

Socioeconomic and livelihood status of floodplain fish farmers in Kotalipara upazila, Gopalganj, Bangladesh 孟加拉国戈帕甘吉Kotalipara upazila洪泛区渔民的社会经济和生计状况

Bangladesh Journal of Fisheries Pub Date : 2022-03-28 DOI: 10.52168/bjf.2021.33.40

M. A. Halim

{"title":"Socioeconomic and livelihood status of floodplain fish farmers in Kotalipara upazila, Gopalganj, Bangladesh","authors":"M. A. Halim","doi":"10.52168/bjf.2021.33.40","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.40","url":null,"abstract":"This paper describes the socio-economic and livelihood status of adjacent floodplain fish farmers in Kotalipara upazila, Gopalganj, Bangladesh. A survey was conducted from July to December, 2020 to assess the present socio-economic status of the fish farmers in a floodplain of Gopalganj district. The survey revealed that the average age and experience of fish farmers were 40.50±14.5 and 17.5±7.15 years, respectively. It was also found that 76.64% of farmers were married, 21.50% were unmarried and 1.87% were widows. It was found that 62.60% fish farmers had a kacha house, 6.20% had a paka house, 26.60% had semi-paka house and only 4.70% had two storied. Sixty percent fish farmers have kacha toilets, 20 % semi-paka and 10% have no sanitary facilities. About 27% of fish farmers practiced monoculture fish culture and 73% farmers followed polyculture culture. It was tracked down that 48% of the fish farmers gathered fries/fingerlings from the fry merchants, 5% from the Govt. farms, 25% from the neighborhood nursery, 10% from personal nursery and extra 12% from local hatcheries. In the survey region about 15% fish farmers manage aquatic weeds, 25% fish farmers dried out their water reservoir, 55% fish farmers refit the pond dykes and 5% fish farmers eradicate the bed sludge. At the end of the study, 25% fish farmers said that economic well-being has improved exceptionally, 55% fish farmers said that social situations have improved marginally and 20% fish farmers are static. In the final part of the study, 73% fish farmers reported that they used loose feed, 9% used pellets and 18% used both types. In the survey location, fish production was 2,964 kg/ha. All fish farmers were fully dependent on floodplain fishery for their livelihood. It is possible to uplift their socioeconomic status by managing the floodplain with improved technology.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129314202","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}

引用次数: 0

Biodiversity, threats and recommendation for conservation of fishes in the Old Brahmaputra River 古布拉马普特拉河鱼类的生物多样性、威胁及保护建议

Bangladesh Journal of Fisheries Pub Date : 2022-03-28 DOI: 10.52168/bjf.2021.33.37

M. Hasan, Syeda Marzia Islam Tripti

{"title":"Biodiversity, threats and recommendation for conservation of fishes in the Old Brahmaputra River","authors":"M. Hasan, Syeda Marzia Islam Tripti","doi":"10.52168/bjf.2021.33.37","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.37","url":null,"abstract":". The information of fish biodiversity, possible risks and associated threats which are liable for declining the indigenous fish species in our water bodies, particularly in the Old Brahmaputra River (Fulchhari, Gaibandha to Melandah, Jamalpur) is lacking compared to other rivers and/or other portion of the same river channel in Bangladesh. How many fish species exist in this river is also an arguable open question to local ichthyologists. To minimize this deficiency, our collected fishes were labeled with a proper voucher number and kept their good illustration. Further, we aimed to quantify the biodiversity, identify the threats and suggest the possible conservation policy for sustainable management of indigenious freshwater species of this river starting from Fulchhari Upazila of Gaibandha district towards Melandah Upazila, Jamalpur district from January to December 2021. The present study showed that Cypriniformes (43%) is the most dominating group followed by Siluriformes (33%), Perciformes (19%) and so on which belong to four orders and 10 families. In summary, it is generalized that fish biodiversity of this river has significantly declined in the last decade due to anthropological and natural effects which urge the design of a new conservation policy for the sustainable management of our tasty, valuable indigenous fish species.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122461281","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}

引用次数: 1

A comparative study on the productivity of selected tropical freshwater microalgae 热带淡水微藻生产力的比较研究

Bangladesh Journal of Fisheries Pub Date : 2022-03-28 DOI: 10.52168/bjf.2021.33.28

Zannatul Nayma, H. Khatoon, Mohammad Redwanur Rahman, Fardous Ara Mukta, R. Sultana, MD. Nayeem Hossain Mohammad

{"title":"A comparative study on the productivity of selected tropical freshwater microalgae","authors":"Zannatul Nayma, H. Khatoon, Mohammad Redwanur Rahman, Fardous Ara Mukta, R. Sultana, MD. Nayeem Hossain Mohammad","doi":"10.52168/bjf.2021.33.28","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.28","url":null,"abstract":"The wide spread use of microalgae in various fields of human activity including fishery generated a need of screening of highly productive microalgae. Therefore, in this study, grow rate and productivity of selected freshwater microalgae species (Nephrocytium sp., Nannochloropsis sp., Selenastrum sp., Sphaerocystis sp., Ankistrodesmus sp., Monoraphidium sp., Pectinodesmus sp. and Scenedesmus sp.) were studied. Selected microalgae were cultured in Bold Basal Medium and cell density was determined to analyze specific growth rate (SGR), cell duplication time and cell doublings per day. In addition, biomass data and lipid data were recorded to calculate volumetric, areal and lipid productivity. Results showed that Monoraphidium sp. had significantly highest (p<0.05) SGR in lag phase (0.861±0.017/day) and exponential phase (0.437±0.016/day) where Ankistrodesmus sp. showed significantly highest (p<0.05) SGR in stationary phase (0.221±0.009/day) compared to others. Selenastrum sp. and Scenedesmus sp. showed significantly (p<0.05) highest and lowest cell duplication time and cell doublings per day was highest in Monoraphidium sp. Volumetric (47.738±0.576 mg/L/Day) and areal (4.774±0.058 mg/cm2/day) productivity were significantly (p<0.05) highest in Scenedesmus sp. but lipid productivity was in Monoraphidium sp. (8.513±0.258 mg/L/Day). This study concluded that Monoraphidium sp. performed best and accumulated much higher lipid in a day in BBM which will contribute to produce biomass that can be utilized for different commercial application.\u0000Keywords: Freshwater microalgae, SGR, Cell duplication time, Cell doublings per day","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114283450","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}

引用次数: 0

A model for tubificid worm (Tubifex tubifex) production and its effect on growth of three selected ornamental fish 管状蠕虫(Tubifex Tubifex)生产模型及其对三种选定观赏鱼生长的影响

Bangladesh Journal of Fisheries Pub Date : 2022-03-28 DOI: 10.52168/bjf.2021.33.23

Md. Ashraful Alam, M. Khan, M. Sarower-E-Mahfuj, Y. Ara, I. Parvez, M. Amin

{"title":"A model for tubificid worm (Tubifex tubifex) production and its effect on growth of three selected ornamental fish","authors":"Md. Ashraful Alam, M. Khan, M. Sarower-E-Mahfuj, Y. Ara, I. Parvez, M. Amin","doi":"10.52168/bjf.2021.33.23","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.23","url":null,"abstract":". The demand for sludge worms, Tubifex tubifex is increasing with the growth of aquaculture as low-cost live feed in hatcheries and ornamental fish nurseries. The study was conducted to determine the optimal culture medium for T. tubifex worm’s production and to find out the inclusion effects of worms as feed on ornamental fish rearing. Three media-based treatments (T-1: mustard oil cake 20%, wheat bran 10%, soybean meal 10%, rice bran 20%, cow-dung 20%, sand 10%, fish pond mud 10%; T-2: mustard oil cake 10%, wheat bran 10%, soybean meal 10%, rice bran 10%, straw 5%, fish scale, stomach and fin 25%, cow-dung 20%, fish pond mud 10% and T-3: cow-dung 75%, sand 15%, fish pond mud 10%) with three replications of each were used to culture the worms for 100 days in nine cemented culvert system (160×25×10 cm3). The growth performance of three popular ornamental fishes koi carp (Cyprinus carpio), comet goldfish (Carassius auratus auratu) and goldfish (Carassius auratus) were determined by replacing the commercial feed at different level with tubificid rearing in fiberglass aquarium (45×30×30 cm3) for 32 days duration. Maximum yield (959.23 44.34 mg·cm-2) of tubificid biomass was recorded in T-2 (mustard oil cake-10%, wheat bran-10%, soybean meal-10%, rice bran-10%, straw-5%, fish scale, intestine, stomach and fin-25%, cow-dung-20%, mud collected from fish pond-10%) with a peak at day 70th. The fish fed with 50% commercial feed + 50% T. tubifex in TF-2 showed significantly (p<0.05) higher growth and survival performance than other treatments. The mean value of water quality parameters (i.e. temperature, pH and dissolved oxygen) were statistically insignificant (p>0.05) among the three treatments. Approximately 1.83 kg media were needed to produce 1.0 kg tubificid worm in treatment T-2. T-2 media is recommended as suitable media for commercial tubificid worm production and the inclusion of 50 % tubificid worms in the feed can be suggested for the ornamental fish rearing. ","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133395518","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}

引用次数: 1

Sensory evaluation and proximate composition analysis of export oriented and locally consumed fishes of Bangladesh 孟加拉国出口型和本地消费鱼类的感官评价和近似成分分析

Bangladesh Journal of Fisheries Pub Date : 2022-03-28 DOI: 10.52168/bjf.2021.33.34

M. Karmakar, M. A. Mansur, ,. N. Uddin, Md. Rabiul Islam, Shayla Sultana Mely, S. Akter, M. Islam

{"title":"Sensory evaluation and proximate composition analysis of export oriented and locally consumed fishes of Bangladesh","authors":"M. Karmakar, M. A. Mansur, ,. N. Uddin, Md. Rabiul Islam, Shayla Sultana Mely, S. Akter, M. Islam","doi":"10.52168/bjf.2021.33.34","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.34","url":null,"abstract":"The study was conducted to investigate the sensory quality and proximate composition of export oriented and locally consumed fishes collected from four fish processing plants, four super shops and four local fish markets of Bangladesh. Sample of Clarias batrachus, Amblypharyngodon mola, Ompok pabda, Labeo rohita and Anabas testudineus were subjected to sensory evaluation for color, odor, taste, flavor and texture characteristics by organoleptic method and proximate composition for nutritional quality assessment using standard AOAC methods. Sensory quality evaluation revealed that average defect points of fish samples collected from processing plants, super shops and local markets were between 1.40 to 1.57, 1.67 to 2.31 and 1.36 to 2.64 respectively, indicating excellent quality of samples collected from processing plants compared to good/acceptable quality for those collected from super shops and local markets. The study of proximate composition revealed that moisture ranged from 79.71±0.07% to 66.77±0.7%, crude protein 19.05±0.31% to 16.01±0.13%, crude lipid 10.41±0.02% to1.25±0.19% and ash 3.73±0.07% to 1.43±0.04% in different fish species collected from different sources. In conclusion, the organoleptic assessment and proximate composition of collected samples indicated that the fish samples of fish processing plants were of good condition for export and consumption. The fish samples from local fish markets and super shops were within the acceptable level but not as good as the fish samples of fish processing plants.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133820943","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}

引用次数: 0

Bioaccumulation of heavy metals in fish and shellfish from Rupsa River, Bangladesh, and risk assessment for human 孟加拉Rupsa河鱼类和贝类重金属的生物积累及对人类的风险评估

Bangladesh Journal of Fisheries Pub Date : 2022-03-28 DOI: 10.52168/bjf.2021.33.33

S. K. Paul, Md. Abdul Ahad, ,. U. Ahmed, M. Kamal, Md. Shaheed Reza

{"title":"Bioaccumulation of heavy metals in fish and shellfish from Rupsa River, Bangladesh, and risk assessment for human","authors":"S. K. Paul, Md. Abdul Ahad, ,. U. Ahmed, M. Kamal, Md. Shaheed Reza","doi":"10.52168/bjf.2021.33.33","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.33","url":null,"abstract":"Spatial variation of Pb, Hg, Cr, Cd and As concentrations between up- and downstream fish (river shad Tenualosa ilisha, silver jewfish Otolithoides pama) and shellfish (black tiger shrimp Penaeus monodon) collected from Rupsa River of the south-west coast of Bangladesh was studied in order to assess the potential health risks in human. Samples (n=18) were collected representing 3 species from two locations of the river system and muscle analyzed for heavy metal concentration. Mean concentration of the elements was significantly higher (p<0.05) in the downstream samples compared to those of the upstream with a high concentration in benthic fauna and interspecific variation at a trend: black tiger shrimp > Hilsa shad > silver jewfish and distribution As>Cr>Hg>Cd>Pb. Bioaccumulation of As and Hg was correlated well with fish size although their concentrations were well below the international legislation limits set by WHO and FAO. For potential human health risk, the estimated daily intake (EDI), target hazard quotient (THQ) and total target hazard quotient (TTHQ) for non-carcinogenic risk suggest that most of the values were within the acceptable limits for all species expect As. Besides, the carcinogenic risk (CR) values indicate less prone to cancer risk yet CR values of Cd and As in both black tiger shrimp and Hilsa shad were close to the unacceptable range. \u0000 ","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127127262","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}

引用次数: 1

Genetic characterisation of wild catla (Catla catla Hamilton) populations using microsatellite DNA markers 利用微卫星DNA标记分析野生catla (catla catla Hamilton)群体的遗传特征

Bangladesh Journal of Fisheries Pub Date : 2021-12-31 DOI: 10.52168/bjf.2021.33.19

MD. Abdullah AL Faroque, M. Minar, NU Nesa, M. R. I. Sarder, Md. Fazlul Awal Mollah

{"title":"Genetic characterisation of wild catla (Catla catla Hamilton) populations using microsatellite DNA markers","authors":"MD. Abdullah AL Faroque, M. Minar, NU Nesa, M. R. I. Sarder, Md. Fazlul Awal Mollah","doi":"10.52168/bjf.2021.33.19","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.19","url":null,"abstract":"The genetic characterisation of catla, Catla catla populations from three rivers, the Halda, the Jamuna, and the Padma was performed employing six microsatellite DNA markers Ccat A12, Ccat C3, Ccat C6, Ccat C8, Ccat G1, and Ccat G2. All the studied loci were detected as polymorphic (P95) in nature. The appearance of five rare alleles in Halda, at Ccat A12 (149 and 153 bp), Ccat C6 (180 bp), and Ccat C8 (98 and 104 bp) demonstrated the genetic richness of the Halda population. The average highest (6.33) and lowest (4.67) number of alleles were recorded in the Halda and the Padma populations, respectively. The Halda population exhibited the highest (0.5111) average heterozygosity (Ho) compared to the Jamuna (0.4889) and the Padma (0.4167). The population differentiation (FST) between the Halda and the Padma populations was the highest (0.0653) and the lowest (0.0366) between the Halda and the Jamuna populations. The highest gene flow (Nm) (6.5747) existed between the Halda, and the Jamuna populations and the lowest (3.5811) between the Halda and the Padma populations. These findings revealed a reduced genetic variability of wild stocks of C. catla in relation to allelic diversity and heterozygosity that provided a benchmark for future comprehensive management programme to conserve the genetic resources of wild populations of this species.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129034885","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}

引用次数: 1

Determination of survival and haemocyte response of mud crab Scylla olivacea in vivo challenged with Vibrio 在弧菌攻击下泥蟹Scylla olivacea存活及血细胞反应的测定

Bangladesh Journal of Fisheries Pub Date : 2021-06-30 DOI: 10.52168/bjf.2021.33.13

A. Hasanuzzaman, Susmita Karmaker, Marshida Khanom, M. Islam

引用次数: 0

Histopathological alterations in the gills of banded gourami (Trichogaster fasciata) exposed to thiamethoxam 暴露于噻虫嗪的带状gourami (Trichogaster fasciata)鳃的组织病理学改变

Bangladesh Journal of Fisheries Pub Date : 2021-06-30 DOI: 10.52168/bjf.2021.33.06

M. Hasan, M. Hasan, M. Uddin, K. Sumon, A. Amin, H. Rashid

{"title":"Histopathological alterations in the gills of banded gourami (Trichogaster fasciata) exposed to thiamethoxam","authors":"M. Hasan, M. Hasan, M. Uddin, K. Sumon, A. Amin, H. Rashid","doi":"10.52168/bjf.2021.33.06","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.06","url":null,"abstract":"Thiamethoxam (THM) is a widely used agro-pesticide in Bangladesh, though European Union has banned this neonicotinoid insecticide due to its toxic effects on non-target organisms. A 60-day experiment was conducted to study the effect of sub-lethal concentrations of THM on gills of Banded Gourami Trichogaster fasciata. The experiment was conducted in 15 PVC tanks each containing 100L water. The 96-h LC50 value of THM was estimated as 161.06mg/L for Banded Gourami. Based on estimated 96-h LC50 value, the experiment was carried out using a control (0 mg/L of THM) and five sub-lethal concentrations (9.37, 18.75, 37.5, 75 and 150 mg/L of THM in water) with three replications. For collection of gills, fishes were sampled on day-30 and day-60 of exposure to THM. Several histopathological changes were observed in the gill tissues of treated fishes viz. clubbing and reduction of gill filaments, telangiectasis of gill lamellae, haemorrhage and damage of gill raker. Water quality parameters (e.g. DO, pH and temperature) were recorded every 15 days interval. The DO levels were found to decrease significantly with increasing THM concentrations and time of exposure, whereas no noticeable changes were observed for pH and temperature. Therefore, neonicotinoid crop insecticide like THM is capable of damaging gill tissues of an small indigenous fish Banded Gourami.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133108355","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}

引用次数: 5

Heavy metal concentration in some freshwater fishes during autumn and winter in Mymensingh district of Bangladesh 孟加拉国迈门辛格地区秋冬季节淡水鱼体内重金属浓度

Bangladesh Journal of Fisheries Pub Date : 2021-06-30 DOI: 10.52168/bjf.2021.33.10

M. Mansur, Md. Nurul Haider, M. Hossain, M. Mia, M. Karmakar

{"title":"Heavy metal concentration in some freshwater fishes during autumn and winter in Mymensingh district of Bangladesh","authors":"M. Mansur, Md. Nurul Haider, M. Hossain, M. Mia, M. Karmakar","doi":"10.52168/bjf.2021.33.10","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.10","url":null,"abstract":"Study was conducted to determine the heavy metal concentration in 5 freshwater fishes Heteropneustes fossilis, Clarias batrachus, Anabus testudineus, Oreochromis niloticus, and Mystus gulio during autumn and winter. Most widely eaten five freshwater fish species were selected for this purpose. These fish species were Among the heavy metals estimated in this study (Cd, Cr, Pb, Cu, Zn) the Cd, Cu, Zn were within the acceptable level but Cr and Pb concentration was above the maximum allowable limit. The Cd, Cr, Pb concentration in the fish muscle was higher in winter as compared to that of autumn but the Cu and Zn concentration was higher in autumn when compared to that of winter. Result of the present research indicates that the heavy metal concentration in fish muscle significantly varies with season. Some heavy metal were within the acceptable level in autumn season but above the maximum allowable limit in winter season. In H. fossilis, C. batrachus, and O. niloticus, heavy metal concentration was within the acceptable level but in A. testudineus and M. gulio heavy metal concentration was above the maximum allowable limit. So heavy metal concentration varied with season as well as with species of fish.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133723170","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}

引用次数: 1