Bangladesh Journal of Fisheries最新文献

{"title":"Existence of panmictic Hilsa shad (Tenualosa ilisha) populations from two large river ecosystems in Bangladesh revealed by mitochondrial control region","authors":"Mumtahina Khatun, Md. Rashedul Kabir Mondol, S. Rahman, M. A. Alam, M. A. Bashar, Y. Mahmud","doi":"10.52168/bjf.2022.34.8","DOIUrl":"https://doi.org/10.52168/bjf.2022.34.8","url":null,"abstract":"The present study was undertaken to estimate genetic diversity and reveal population structure of Hilsa shad (Tenualosa ilisha) from two large river ecosystems, the Padma and Meghna of Bangladesh using mitochondrial control region (D-loop region). Fin tissue samples of 60 individuals were collected from the Padma (ChapaiNawabgonj) and Meghna River (Chandpur). DNA was extracted and D-loopof mtDNA was amplified, purified and sequenced. A total of 35 Sequences (15 Sequences from the Padma and 20 Sequences from the Meghna population) were analyzed and 14 haplotypes were detected. Total16 polymorphic sites were identified that included11 singleton sites and 5 parsimony informative sites. These populations showed high haplotype diversity (h) (0.863 in the Meghna and 0.901in the Padma population). We found low nucleotide diversity (Pi) within each population, 0.0058±0.0039 in the Padma to 0.0063±0.004 in the Meghna population. The shared haplotypes among the two populations were identified as 28.57%, and the rest 71.43% were private haplotypes. Estimate of genetic differentiations (Fst) suggest that the Meghna population of Hilsa was closely related to the Padma population (Fst= 0.058, P=0.07). The TCS genealogy showed three main haplotypes separated by three mutational steps and hap_10 might be the most ancestral haplotype by its internal position in the network. All results suggest panmixia in T. ilisha populations between the Meghna and Padma river populations and thus similar management plan could be useful for these two river Hilsa fishery in Bangladesh.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114721556","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":"Multivariate morphometric differentiation of Macrobrachium species (Crustacea: Palaemonidae) along the northern rivers of Bangladesh","authors":"I. Hoshan, Akthera Yesmin, M. Ray, F. F. Ahmed, Sarower Mahfuj","doi":"10.52168/bjf.2022.34.4","DOIUrl":"https://doi.org/10.52168/bjf.2022.34.4","url":null,"abstract":"Understanding interspecific morphometric variation is a prerequisite of species identification, evolutionary and taxonomic studies. The external features (i.e. morphometric and ratios) of five Macrobrachium species viz., Macrobrachium rosenbergii, M. lanchesteri, M. dolichodactylus, M. idella and M. lamarrei from three rivers in northern Bangladesh, were used to analyze interspecific morphometric variation. Macrobrachium samples were collected from Jamuneshwari river, Tangon river and Atrai river. Morphometric and ratios data were subjected to univariate ANOVA test. To assess variations among the species, a principal component analysis (PCA) and canonical variate analysis (CVA) were performed. Four PCA explained 95.31% of the variation in morphometric and ratios data. Four CVA were correctly classified as 46.53%, 30.02%, 18.10% and 5.35% respectively using morphometric and ratios data. Morphometric and ratio results from PCA formed a compact cluster among species while in CVA showed that species were completely formed a separate cluster. A dendrogram independently developed based on phenotypic traits among the individuals of the five Macrobrachium species confirmed the presence of phenotypic differentiation. The baseline evidence ensuing from the current study would be advantageous for geometric morphometric, genetic investigations and further in situ conservation of Macrobrachium species in Bangladesh.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133807376","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":"Morphological variations between native and Vietnam-originated striped snakeheads (Channa striata) in Bangladesh","authors":"Bushra Jannat, K. Kanon, N. Sultana, M. Alam","doi":"10.52168/bjf.2022.34.5","DOIUrl":"https://doi.org/10.52168/bjf.2022.34.5","url":null,"abstract":"The freshwater striped snakehead, Channa striata, known as “shol” in Bangladesh was introduced from Vietnam for commercial aquaculture that lacks morphological background. Therefore, the present study sought to differentiate various C. striata populations morphologically using one hundred eighty-six samples, consisting of nine native and two Vietnam-originated populations in Bangladesh. Seventeen morphometric and six meristic characters were studied, and the analysis highlighted that native and Vietnamese snakeheads were significantly different considering all morphological traits examined except eye diameter. The discrimination analysis illustrated that pelvic fin length (PVFL), pectoral fin length (PCFL), mouth gape (MG), and body width (BW) were the central characters caused to differentiate between native and Vietnamese populations. However, morphological findings compared with the previous findings reveal that Vietnam-originated snakeheads in Bangladesh do not correspond to wild morphotypes in Vietnam and that need to maintain carefully to avoid possible new morphotypes through genetic introgression and different culture condition practiced in Bangladesh.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114684949","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":"Development of preventive measures against insect infestation in dried fish","authors":"S. Ferdousi, S. N. Jahan","doi":"10.52168/bjf.2021.33.35","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.35","url":null,"abstract":"The present study was conducted on insect infestation and develops preventive measures of dried fish during July 2017 – June 2018. Six treatments (T1 as control, T2, T3, T4, T5 and T6) were conducted to assess magnitude of infestation and to develop preventive measures to combat the blowfly infestation of the dried punti fish (Puntius sp.) by treating with net, salt, chili powder and turmeric powder. Experiments were done in same temperature, humidity and sunlight (within six days). It was observed that two types (1. Musca domestica and 2. Phormia regina) of flies landed over the fishes after 30-45 minutes kept for drying as there was no dressing of the fishes and no using of nets. After completing the life cycle the blow fly left the fish body and flew away. Finally dry fishes were lost their weight. In this study the protein, lipid, ash and moisture content of Puntius sp. in dried condition ranged from 68.90±1.20% (T6) to 73.20±2.80% (T5), 6.90±0.80% (T4) to 8.90±0.80% (T6), 7.90±0.30% (T1) to 8.70±0.80% (T6) and 8.90±0.30% (T1) to 9.20±0.50% (T4). Protein and lipid contents were significantly varied from each other and there was no significant difference among the six treatments in case of ash contents and moisture contents. T5 shows better result on the basis of chemical test.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"104 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":"115658609","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":"Larval rearing of orange mud crab, Scylla olivacea: improving survival rate and shortening metamorphosis period","authors":"Shawon Ahmmed, M. Sakib, M. Islam, Y. Mahmud","doi":"10.52168/bjf.2021.33.29","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.29","url":null,"abstract":"Orange mud crab (Scylla olivacea) is an important aquaculture species in Southeast Asian countries, especially in the Southwest costal region of Bangladesh. Due to unavailability of hatchery produced seeds the farming of S. olivacea in exclusively depends on the wild for small juveniles resulting in exploitation of this species in Bangladesh. The development of proper hatchery techniques considering better understandings related to larval development are needed to increase the survival and growth rate of S. olivacea in hatchery conditions. Therefore, this study aimed to optimize the water treatment strategy for the upgrading of water quality, minimizing mortality and shortening the metamorphosis duration during larval rearing of mud crab. Newly hatched larvae were reared in three different rearing conditions where the water was treated with both prebiotic (Super-TCT-Biotic, 5 ppm) and probiotics (Fish probiotic, 0.5 ppm) in treatment-1 (T1) but only prophylaxis (mixure of 0.025 ppm Teflan and 0.3 ppm Furazolidone) in treatment-2 (T2). In treatment-3 (T3), prebiotic (5 ppm) and probiotics (0.5 ppm) were combinedly used during first 10 days and prophylaxis (0.3 ppm) was also used from day 14 to day 25. The stocking density was maintained as 50 zoea.L-1 and rotifer, liquid rotifer, enriched Artemia and liquid Artemia were used as feed for the larval growth. The findings revealed that hydrological parameters viz., temperature, salinity, pH, dissolved oxygen and ammonia in all the treatments were similar and found within the acceptable ranges for mud crab larvae rearing. The value of larval stage index (LSI) was found significantly higher (p<0.05) on 21st day of rearing in T3 (6.87±0.06) than T1 (6.74±0.04) and T2 (6.61±0.07). Between, zoea1 and crablet phase, the significantly higher survival rate was observed in T3 (7.00±1.00) than T1 (5.00±0.00) and T2 (4.00±1.00). The result of the present study suggested that combined water treatment with prebiotic, probiotic and prophylaxis can shorten the metamorphosis period and enhance the survival rate of S. olivacea.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"1995 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":"125563692","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":"Effects of natural carotenoids on the body coloration and growth performance of Blue Gourami fish (Trichogaster trichopterus)","authors":"M. Naeem, Saifuddin Rana, S. A. Shimul, Sk Ahmad Al Nahid","doi":"10.52168/bjf.2021.33.26","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.26","url":null,"abstract":"The effect of natural carotenoid on body coloration and growth of Blue Gourami (Trichogaster trichopterus) was investigated using china rose petal (T1), marigold petal (T2), and carrot (T3). Sources were incorporated with fish feed with four treatments, including T0 control treatment (without natural carotenoid sources) at a 15% ratio. Fishes were purchased and conditioned for two weeks and then randomly distributed among the 12 plastic tanks, and stocking density was maintained at eight fishes/tank. Fishes were fed twice/daily with four different treatments for eight weeks. Sampling was done every week and carotenoid contents, weight, and length measurements were recorded. The average final weights in four treatments were found 5.455±0.821 gm, 4.504±0.2196 gm, 4.764±0.727 gm, and 3.776±0.418 gm in treatments T0, T1, T2, and T3, respectively. In the case of weight gain, a higher result was found in T0 (5.455±0.821 gm). Mean final lengths obtained were 4.094±0.250 cm, 4.005±0.233 cm, 4.083-0.297 cm, and 4.083±0.311 cm, respectively. The average final carotenoid absorptions of the fishes in four treatments were 0.1226±0.0115 mg/100 kg, 0.1296±0.0169mg/100 kg, 0.1669±0.0298 mg/100 kg, and 0.1487±0.0228 mg/100 kg in treatments T0, T1, T2 and T3, respectively. T2 treatments (marigold) had the highest carotenoids gain. The highest survival rate (100%) was observed at T2. Study suggested that marigold petal could be used to make natural color enhancer feeds at a cheaper cost. \u0000 ","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"62 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":"126711558","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":"Investigation on fish marketing system in Rangpur town of Bangladesh","authors":"M. Islam, Arshad Hossain, Iftekhar Ahmed Fagun","doi":"10.52168/bjf.2021.33.39","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.39","url":null,"abstract":"The present study was conducted on the fish marketing system of Rangpur town to determine specific marketing channels, fish trading, marketing costs, and margins at various levels. The overall marketing cost of fish for aratdar was estimated to be Tk. 0.727, paiker, Tk. 6.396, and retailer, Tk. 4.024 per kg of fish. The total cost of the fish for the various middlemen was Tk. 12.888. Aratdar commission, transportation, personal expenditures, waste, icing, wages and salary, market toll, rent and power, packing materials, loading and unloading, phone bill, grading, and security were all cost items. Paiker has the greatest marketing expenses (Tk. 6.396) due to greater aratdari commission and transportation costs. Paikers' average net profit was Tk. 8.604 during the peak period and Tk. 9.604 during the lean period, Aratdars' average net profit was Tk. 3.516 during the peak period and Tk. 4.498 during the lean period, and Retailers' average net profit was Tk. 16.690 during the peak period and Tk. 17.809 during the lean period per kg of fish. Traders and customers faced a variety of issues, including a lack of input on time, a lack of money, a high interest rate on credit, a shortage of fisheries equipment, price volatility, a low price, political instability, a lack of physical facilities, insufficient storage space, and so on. The study will serve as a foundation for future research into the development of the fish marketing system in this area.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"9 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":"133914099","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":"Fish availability and marketing system at Ashuganj Upazila, Brahmanbaria, Bangladesh","authors":"M. Safiullah, M. Islam, Iftekhar Ahmed Fagun","doi":"10.52168/bjf.2021.33.41","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.41","url":null,"abstract":"The research was conducted to identify the fish availability and fish marketing system in different markets of Ashuganj upazila under Brahmanbaria district. Data were collected from fish retailers, wholesalers and consumers of  three different markets namely Ashuganj Bazar, Ferryghat Bazar and Khariyala Bazar through individual interviews and focus group discussion. The maximum 19 species were found in Ashuganj Bazar while 16 species were found in Ferryghat Bazar and 14 species were found in Khariyala Bazar. The species composition included 36% Catfishes, 15.33% SIS, 11.33% Ilish, 6.66% Thai pangas, 6% Prawn and Shrimp, 6% Marine fish, 6% Carps, 5% Tilapia and 2.33% Thai koi.  The daily average gross profit of fish retailers in Ashuganj Bazar, Ferryghat Bazar and Khariyala Bazar were estimated as Tk. 550/day, Tk. 500/day and Tk. 480/day respectively. The results showed that 62% of the retailers have improved their socio-economic condition through fish selling. A number of constraints such as lack of storage facilities, poor supply of ice, exploitation by middleman, lack of money and lack of infrastructure were reported by the retailers.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"1 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":"130480891","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":"Effect of different experimental diets and salinity on growth performance of Penaeus monodon","authors":"Md. Rony Golder, MD Abdul Kadir Zilany, Joyanta Bir, K. Huq, K. Kabir, M. Mamun-ur-Rashid, S. S. Islam","doi":"10.52168/bjf.2021.33.30","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.30","url":null,"abstract":"This study evaluated the effect of different experimental diets on the growth of Penaeus monodon cultured at different salinities. We used four diets in this experiment, such as diet-1 (F1), diet-2 (F2), diet-3 (F3) and diet-4 (F4). All the diets were fed to P. monodon juveniles cultured at salinities of 5 ppt (S5), 10 ppt (S10), 15 ppt (S15), and 20 ppt (S20) for a 45-day tank trial. In this study, the feed’s fishmeal protein was replaced with concentrated protein as an alternative approach to aquaculture sustainability. There was no interaction effect and no main effects of feed and salinity on the growth of P. monodon. Feed and salinity had an interaction effect, and salinity had a main effect on the survival of P. monodon. Overall, survival was higher in the tanks with higher salinity, such as 15 ppt and 20 ppt. There was also a higher survival at salinity 10 ppt where shrimps were fed with F1 (83.33±3.33%) and F2 (86.67±8.82%). Estimated marginal survival also indicated that survival tends to be raised with increased salinity. There was an environmental fluctuation during this study. Hence, this data might not indicate the general features of growth and survival of P. monodon.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"57 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":"122402893","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":"Prevalence of fish-borne zoonotic parasites and their molecular identification in Bhola district of Bangladesh","authors":"Sayeda Jahan Aunamika, B. Roy, Z. Islam, Nurnabi Ahmed, M. Rahman, Hiranmoy Biswas, M. M. Hasan, MD. Hasanuzzaman Taluker","doi":"10.52168/bjf.2021.33.31","DOIUrl":"https://doi.org/10.52168/bjf.2021.33.31","url":null,"abstract":". Fish-borne zoonotic parasites are a rapidly increasing health hazards for human in all over the world. There is a scarcity of information on the fish-borne zoonotic parasite infection in Bangladesh. The present study was aimed to investigate fish-borne helminth parasites in Bhola district. A total of 300 fresh fish samples were collected randomly from different local markets of Bhola district and transported to the laboratory of the Department of Parasitology, BAU. Fishes were homogenized and digested with pepsin-HCl solution for overnight and washed with NaCl solution for 8-9 times and then sediment was examined under a microscope to detect the presence of metacercariae/metacestode. Fishes were found to be infected with multiple infective stages of helminth parasites such as Opisthorchis sp., Clonorchis sp., Diphyllobothrium sp., Metagonimus sp. and Metorchis sp. In this study, 58% overall prevalence of fish-borne zoonotic parasites was recorded. About 80% metacercariae was found in Loitta (Harpadon nehereus) followed by 65% in Spotted snakehead (Channa punctata), 60% in Tilapia (Oreochromis nilolticus), 45% in Stinging catfish (Heteropneustes fossilis) and 24.28% in Indian carplet (Amblypharyngodon microlepis). The plerocercoid of Diphyllobothrium sp. were identified morphologically and was confirmed molecularly by PCR. This study indicates that fish-borne helminth parasites may pose a significant public health risk to the people of Bhola district.","PeriodicalId":213044,"journal":{"name":"Bangladesh Journal of Fisheries","volume":"209 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":"123623006","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}