Khulna University Studies最新文献

{"title":"POTENTIAL TOXICITY OF PESTICIDES AND ITS TRANSFORMATION PRODUCTS TO AQUATIC ORGANISMS","authors":"A. K. Ghosh, M. Sarower","doi":"10.53808/kus.2024.21.01.1104-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1104-ls","url":null,"abstract":"The escalation of agricultural productivity in recent decades has compelled a swift upsurge in the utilization of pesticides, ultimately leading to their presence in the aquatic ecosystem.  Pesticides and their transformed products have negative effects on the growth, reproduction, physiology, immunity, and histopathology of multiple tissues of fish. Pesticides have emerged as a significant global problem because to their potential to bioaccumulate inside various fish tissues, hence posing substantial health risks for consumers. Within this particular context, the present review aims to illustrate the potential adverse effects of pesticides and their transformed products on aquatic organisms, with a specific focus on fish. Research has revealed that the introduction of pesticides into aquatic environments might have detrimental effects on the mangroves and immunological response of fish, ultimately exacerbating the ecological impact by increasing their vulnerability to diseases. Hence, it is imperative to explore environmentally friendly, efficient, and appropriate pesticide alternatives in order to safeguard the aquatic ecosystems and the overall health of various aquatic life, particularly fish.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"69 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139854061","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":"CLIMATE CHANGE EFFECTS ON THE SMALL-SCALE FISHERIES IN THE NORTHERN PART OF BANGLADESH AND ASSOCIATED ADAPTATION MEASURES","authors":"Pial Paul, Mahir Faisal Rahi, Imam Hossain Saiquit, M. Sarower, M. Rouf, M. Parvez, Sharmin Aktar, M. Khanom, Abu Nashir Khan, Md. Moshiur Rahman, Sheikh Mustafizur Rahman","doi":"10.53808/kus.2024.21.01.1168-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1168-ls","url":null,"abstract":"Bangladesh is the sixth-most climate-vulnerable nation in the world. As a result, scientists have focused more on studying the connections between aquaculture, adaption techniques, and the effects of climate change in recent decades. This paper aims to evaluate the degree of awareness and perception regarding climate change, as well as the adaption tactics used by small-scale aquafarmers. Data for the study were gathered through focus groups, key informant interviews, household surveys, and exploratory surveys. The results of the study demonstrate that there have been considerable changes in temperature and rainfall patterns. Fish farmers exhibit considerable knowledge about climate change, drawing information from several sources such as newspapers, television, extension workers, and the internet. Fish farmers have implemented several adaptation strategies, including netting, pond irrigation, long dikes, aerators, fish density reduction, crop rotation, feed management, and feeding, to combat the impacts of floods, cyclones, droughts, and cold waves. In the face of changing environmental conditions, the emphasis should shift towards adapting climate-resilient culture fisheries as part of a climate-smart aquaculture strategy to enhance nutritional security for the growing population. There are already established integrated farming systems in operation, including agri-aquaculture-based systems, livestock-based aquaculture systems, and agri-aqua-livestock integration. A number of cutting-edge technologies, such as community-based aquaculture, cage/pen culture, high dike cropping, aquaculture liners, species diversification, and greenhouse aquaculture, have also been developed as a result of scientific advancements in the integrated farming concept. These practices contribute significantly to improving production, reducing the impacts of climate change, and avoiding contributions to climate change.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"67 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139794607","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":"INTRA-SPECIFIC DIVERSITY OF THE SILVER GRUNT (Pomadasys Hasta) IN THREE LOCATIONS OF BANGLADESH BASED ON MORPHOMETRIC ANALYSIS","authors":"Md. Raihan Kaiser Raju, Alokesh Kumar Ghosh, Muhammad Yousuf Ali, Md. Rashedul Islam, Md. Rafiul Islam Rony, Md Shamim Hasan, Khandakar Anisul Huq","doi":"10.53808/kus.2024.21.01.1145-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1145-ls","url":null,"abstract":"Morphometric variation is a useful tool for studying a species' population structure. The present study was performed to assess the intra-specific diversity between three stocks of the Silver grunt Pomadasys hasta (Khulna, Satkhira and Patuakhali of Bangladesh).  Length-weight relationship, condition factor and few other morphometrics were analyzed using both univariate and multivariate approaches.  A total of 105 samples were subjected to the analysis (weight (95.05 ±44.22 g) and length (16.18±2.57cm). A total of eleven morphometric traits including standard length (SL), head length (HL), pre dorsal length (Pre DL), dorsal length (DL), pre-anal length (Pre AL) , pre-pelvic length (PreVL) , pre pectoral length (PrePL), pre-orbital length (PrOL), body depth (BD), eye diameter (ED) and  pre orbital length (PreOL) were measured. Significant differences were found in four morphometric measurements including head length (HL % of total length), eye diameter (ED % of HL), dorsal length (DL %) and pre dorsal length (PreDL%). A negative allometric growth was observed, as the slope b was far below 3. The highest value of b was found in Satkhira (2.7) and the lowest value of b was found in Khulna (2.07). Three separate stocks of P. hasta exhibited morphological variations in their attributes. The divergence among the stocks could have resulted from both environmental and genetic variances. The outcomes of the study will be helpful for management and conservation of natural population of Datina (P. hasta) in Bangladesh.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"107 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139794327","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":"INTRA-SPECIFIC DIVERSITY OF THE SILVER GRUNT (Pomadasys Hasta) IN THREE LOCATIONS OF BANGLADESH BASED ON MORPHOMETRIC ANALYSIS","authors":"Md. Raihan Kaiser Raju, Alokesh Kumar Ghosh, Muhammad Yousuf Ali, Md. Rashedul Islam, Md. Rafiul Islam Rony, Md Shamim Hasan, Khandakar Anisul Huq","doi":"10.53808/kus.2024.21.01.1145-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1145-ls","url":null,"abstract":"Morphometric variation is a useful tool for studying a species' population structure. The present study was performed to assess the intra-specific diversity between three stocks of the Silver grunt Pomadasys hasta (Khulna, Satkhira and Patuakhali of Bangladesh).  Length-weight relationship, condition factor and few other morphometrics were analyzed using both univariate and multivariate approaches.  A total of 105 samples were subjected to the analysis (weight (95.05 ±44.22 g) and length (16.18±2.57cm). A total of eleven morphometric traits including standard length (SL), head length (HL), pre dorsal length (Pre DL), dorsal length (DL), pre-anal length (Pre AL) , pre-pelvic length (PreVL) , pre pectoral length (PrePL), pre-orbital length (PrOL), body depth (BD), eye diameter (ED) and  pre orbital length (PreOL) were measured. Significant differences were found in four morphometric measurements including head length (HL % of total length), eye diameter (ED % of HL), dorsal length (DL %) and pre dorsal length (PreDL%). A negative allometric growth was observed, as the slope b was far below 3. The highest value of b was found in Satkhira (2.7) and the lowest value of b was found in Khulna (2.07). Three separate stocks of P. hasta exhibited morphological variations in their attributes. The divergence among the stocks could have resulted from both environmental and genetic variances. The outcomes of the study will be helpful for management and conservation of natural population of Datina (P. hasta) in Bangladesh.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"82 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139854220","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":"DIURNAL VARIATION IN SOME WATER QUALITY PARAMETERS OF DIFFERENT INTEGRATED MULTI-TROPHIC AQUACULTURE SYSTEM","authors":"Md Rana Islam, S. Chowdhury, Jannatul Ferdaus Jyoti, K. M. R. Hossain, Joyanta Bir, A. Hasanuzzaman, K. Huq","doi":"10.53808/kus.2024.21.01.1146-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1146-ls","url":null,"abstract":"The present study was conducted to evaluate water quality parameter at different times of a day in an integrated multi-trophic aquaculture system. Four treatments: T1 (prawn+rohu), T2 (prawn+rohu+mola), T3 (prawn+rohu+mola+snail) and T4 (prawn+rohu+mola+snail+aquatic vegetable), and one control (only prawn) were included in the experimental design. Four water quality parameters (Temperature, DO, pH, CO2) were measured at 2 hours interval of a day, and recorded for one month March 2022. The maximum mean water temperature was found 24.67±1.89 ℃ at early afternoon (2 pm) in the control, while the minimum value noticed as 16.93±0.45 ℃ at morning (6 am) in the T1. The highest mean DO was measured at evening in the T2 (5.38±0.48 mg/L), while the minimum mean value observed in T1 (4.10±0.36 mg/L) at morning. pH value was found higher in evening (7.69±0.35)  than in the morning (7.29±0.17).pH value was found higher in T4 (7.69±0.35) where vegetable and snail were present compared to the control where no vegetable and snail was present. The highest CO2value was recorded in the control (16.32±1.1 mg/L) at the morning, while the lowest mean value noticed in the treatment 4 (12.89±1.62 mg/L) in the evening (6 pm). This study has pointed out that the water quality parameters in the prawn production ponds were influenced by the inclusion of different aquatic animal and vegetables in the IMTA system.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139791222","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":"DIURNAL VARIATION IN SOME WATER QUALITY PARAMETERS OF DIFFERENT INTEGRATED MULTI-TROPHIC AQUACULTURE SYSTEM","authors":"Md Rana Islam, S. Chowdhury, Jannatul Ferdaus Jyoti, K. M. R. Hossain, Joyanta Bir, A. Hasanuzzaman, K. Huq","doi":"10.53808/kus.2024.21.01.1146-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1146-ls","url":null,"abstract":"The present study was conducted to evaluate water quality parameter at different times of a day in an integrated multi-trophic aquaculture system. Four treatments: T1 (prawn+rohu), T2 (prawn+rohu+mola), T3 (prawn+rohu+mola+snail) and T4 (prawn+rohu+mola+snail+aquatic vegetable), and one control (only prawn) were included in the experimental design. Four water quality parameters (Temperature, DO, pH, CO2) were measured at 2 hours interval of a day, and recorded for one month March 2022. The maximum mean water temperature was found 24.67±1.89 ℃ at early afternoon (2 pm) in the control, while the minimum value noticed as 16.93±0.45 ℃ at morning (6 am) in the T1. The highest mean DO was measured at evening in the T2 (5.38±0.48 mg/L), while the minimum mean value observed in T1 (4.10±0.36 mg/L) at morning. pH value was found higher in evening (7.69±0.35)  than in the morning (7.29±0.17).pH value was found higher in T4 (7.69±0.35) where vegetable and snail were present compared to the control where no vegetable and snail was present. The highest CO2value was recorded in the control (16.32±1.1 mg/L) at the morning, while the lowest mean value noticed in the treatment 4 (12.89±1.62 mg/L) in the evening (6 pm). This study has pointed out that the water quality parameters in the prawn production ponds were influenced by the inclusion of different aquatic animal and vegetables in the IMTA system.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"107 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139851227","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":"ASSESSMENT OF PHYSICOCHEMICAL PARAMETERS OF WATER IN AN INDUSTRIAL SCALE IN POND RACEWAY SYSTEM","authors":"S.M. Nahid Jobayer, Ruma Khatun, Mohammad Hasnal Alam, Md. Shamsul Kabir, Manjurul Karim, M. Sarower","doi":"10.53808/kus.2024.21.01.1169-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1169-ls","url":null,"abstract":"The In-pond raceway system is a highly sophisticated innovative aquaculture technology. Many research has been done on the physicochemical characteristics of water. The present study was conducted to measure the physicochemical parameters of water in an In-Pond Raceway System (IPRS). The study employed standard and instrumental methods to investigate a range of physicochemical parameters, including water temperature, pH, DO, TDS, conductivity, ammonia, nitrite, and phosphate. One-way Analysis of Variance was conducted to calculate the variation of physicochemical parameters among the study sites. Statistical analysis showed there was no significant variation of physicochemical parameters (p>0.05) among the experimental sites except DO and ammonia (p<0.05). The experimental study showed that, all the key physicochemical parameters water in IPRS production zone were within the optimum ranges when compared with standard water quality parameters which is the prerequisite to introduce maximum survivability of fish production in IPRS system. \u0000 ","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139852456","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":"IMPACT OF WATERLOGGING ON LAND USE, BIODIVERSITY AND ECOSYSTEM SERVICES IN TALA UPAZILA, BANGLADESH","authors":"Srabanti Das Ankhi, M. Rouf","doi":"10.53808/kus.2023.20.02.1123-ls","DOIUrl":"https://doi.org/10.53808/kus.2023.20.02.1123-ls","url":null,"abstract":"Waterlogging has become a major issue due to its severe impact on the south-western region of Bangladesh. This study aims to assess the trend of waterlogging and to find out the impact of waterlogging on land use, biodiversity and ecosystem services in the Tala located in the south-western region of Bangladesh. Satellite images of 1990, 2000, 2010 and 2021 were analyzed to portray the trend of waterlogging and questionnaire survey, FGDs and KIIs were used to discover the impacts of waterlogging on land use, biodiversity and ecosystem services in the study area. Satellite image analysis has shown that there is an ascending trend (increased by 154.5% between 1990 and 2000, by 135.9% between 2000 and 2010 and by 23.6% between 2010 and 2021) of waterlogging in the Tala upazila. Qualitative investigations revealed that waterlogging due to siltation in the associated rivers and unplanned human interventions, has been posing threats to the crop lands by turning them marshy. Biodiversity of aquaculture species, agricultural crops, aquatic wild animals, livestock, trees, birds etc. have been severely affected by waterlogging. Waterlogging is highly responsible for the low production of crop and aquaculture species, shortage of safe drinking water, habitat loss, sanitization, migration of people and so on.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"134 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175911","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 IMPACT OF VASAKA (JUSTICIA ADHATODA) LEAF EXTRACT ON THE GROWTH AND IMMUNE RESPONSE OF SHRIMP (PENAEUS MONODON)","authors":"Joya Biswas, Alokesh Kumar Ghosh, Sheikh Shaon Ahmmed, H. Sadia, M. Sarower","doi":"10.53808/kus.2023.20.02.1125-ls","DOIUrl":"https://doi.org/10.53808/kus.2023.20.02.1125-ls","url":null,"abstract":"Justicia adhatoda, also known as \"Vasaka plant,\" is employed in Ayurvedic medicine to treat a wide range of human diseases. This study aimed to explore the potential application of Vasaka leaf extract (VLE) as a viable option for enhancing the growth and immune response of Penaeus monodon. Three diets containing varying amounts of Vasaka leaves (0 g [Control], 0.5 g/kg feed [VLE0.5], and 1 g/kg feed [VLE1.0]) were consumed to replicate groups of shrimp in 60 L aquarium tanks for 28 days. The assessment of growth was conducted by the evaluation of many parameters, including weight gain, specific growth rate, feed conversion ratio, protein efficiency ratio and survival rate. The results of the experiment indicate that there were no statistically significant differences in the growth performance and survival rate of the shrimp across the various experimental groups. The introduction of Vasaka leaf as a dietary supplement resulted in a significant enhancement of shrimp immunity through the upregulation of total haemocyte count, prophenoloxidase activity, and superoxide dismutase activity, accompanied by a concurrent decrease in haemolymph clotting time. These results propose that nutritional supplementation with Vasaka leaf took no negative effect on the growth of P. monodon but did increase its non-specific immune response and can be considered as safe in shrimp culture.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"21 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139174017","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 OXYTETRACYCLINE ON MORPHOMETRY AND METABOLIC ACTIVITIES OF POLY-CULTURED TILAPIA AND ROHU","authors":"Rahat Bin Shahid, Sunuram Ray, M. Rouf, M. Sarower","doi":"10.53808/kus.2023.20.02.1126-ls","DOIUrl":"https://doi.org/10.53808/kus.2023.20.02.1126-ls","url":null,"abstract":"Oxytetracycline, an antimicrobial agent has been playing a potent role in aquaculture to control the bacterial diseases, but it’s over dose may pose an undesirable effect. However, the purpose of the experiment was to evaluate the impacts of dietary oxytetracycline on the primary productivity, growth performance, biochemical activity, as well as immunity performance of tilapia (Oreochromis niloticus) and rohu (Labeo rohita) in a polyculture system. Oxytetracycline was mixed with feed at 100 mg/kg and fed with no antibiotic was denoted as the control. A total of 480 fish were cultured for 70 days, comprising 240 tilapia (with a length of 14.63 cm and weight of 59.85 g in an average) and 240 rohu (with a length of 11.43 cm and weigh of 24.6 g in an average). The findings indicated that there was not any significant (p >0.05) change in the growth of treated fishes in comparison with the control one. Amylase activity increased significantly (p <0.05), while superoxide dismutase activity increased but in a non-significant (p >0.05) way in the both of fish species. Protease and catalase activities were found to decline significantly (p <0.05) in both species. There was no significant increase in plankton abundance in the treatment ponds. Spectrometry study of chlorophyll-a revealed in control and treatment ponds where, there found no significant (p> 0.05) variation among each week. These results suggested that oxytetracycline dosing rate at 100 mg/kg having no significant impact on the growth and enzymatic activity of poly-cultured tilapia and rohu as well as primary productivity of the pond. A therapeutic dose (100 mg/kg) of oxytetracycline is subjected to be safe, polyculture.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"31 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139176339","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}