Pub Date : 2024-04-04DOI: 10.53808/kus.2024.21.01.1012-se
Jati Mallick, Abu Towab Md Shahriar, A.K. M. Mamunur Rashid, Sirazoom Munira
While housing is a critical component of incremental climate change adaptation, identified by the Intergovernmental Panel on Climate Change (IPCC), climate resilient housing implementation is widely focused on the module's safety and modularity, ignoring the beneficiaries' social adaption process underscored by incremental housing ideas. The study explores the incremental adaptation strategies employed by households in climate-vulnerable rural coastal Bangladesh to understand the complex adaptation attitudes of households in social or climate adaptation. The study uses a case study approach with qualitative methods encompassing household interviews, focus group discussions, and in-depth observation on 10 self-built homesteads, 10 Government of Bangladesh (GoB) provided, and 10 United Nations Development Program (UNDP) provided housing modules at Koyra, Khulna. The study observes that households adopt distinct adaptation strategies depending on sittings, roofs, walls, foundations, bedrooms, kitchens, and toilets of modules, which are prone to climate exposure and sensitivity. Therefore, households tackle the delicate complexity of the aspiration picture and social and climate adaptation when the residential situation is coupled with climate vulnerabilities. The study finds that the incomplete nature of a module allows for more aspiration achievement, while a more complete module leads to aspiration adjustments by changing attitudes toward the aspiration picture. This study underscores that in the design of climate-resilient housing modules, it is essential to consider a minimalist approach that can produce more robust climate-resilient homesteads while offering better opportunities for household engagement to enhance knowledge for building back better and safer.
{"title":"ASPIRATION PICTURE AND CLIMATE ADAPTATION: HOUSEHOLDS’ INCREMENTAL STRATEGIES IN CLIMATE-RESILIENT HOUSING IN RURAL COASTAL BANGLADESH","authors":"Jati Mallick, Abu Towab Md Shahriar, A.K. M. Mamunur Rashid, Sirazoom Munira","doi":"10.53808/kus.2024.21.01.1012-se","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1012-se","url":null,"abstract":"While housing is a critical component of incremental climate change adaptation, identified by the Intergovernmental Panel on Climate Change (IPCC), climate resilient housing implementation is widely focused on the module's safety and modularity, ignoring the beneficiaries' social adaption process underscored by incremental housing ideas. The study explores the incremental adaptation strategies employed by households in climate-vulnerable rural coastal Bangladesh to understand the complex adaptation attitudes of households in social or climate adaptation. The study uses a case study approach with qualitative methods encompassing household interviews, focus group discussions, and in-depth observation on 10 self-built homesteads, 10 Government of Bangladesh (GoB) provided, and 10 United Nations Development Program (UNDP) provided housing modules at Koyra, Khulna. The study observes that households adopt distinct adaptation strategies depending on sittings, roofs, walls, foundations, bedrooms, kitchens, and toilets of modules, which are prone to climate exposure and sensitivity. Therefore, households tackle the delicate complexity of the aspiration picture and social and climate adaptation when the residential situation is coupled with climate vulnerabilities. The study finds that the incomplete nature of a module allows for more aspiration achievement, while a more complete module leads to aspiration adjustments by changing attitudes toward the aspiration picture. This study underscores that in the design of climate-resilient housing modules, it is essential to consider a minimalist approach that can produce more robust climate-resilient homesteads while offering better opportunities for household engagement to enhance knowledge for building back better and safer.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"5 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140745228","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}
Pub Date : 2024-04-02DOI: 10.53808/kus.2024.21.01.1020-ls
R. Remme, M. M. Islam, S. Biswas
The watermelon [Citrullus lanatus (Thunb.)] - a herbaceous, annual, and monoecious fruit - belongs to the family Cucurbitaceae and is usually cultivated in Bangladesh during the period from February to April. However, they may be grown year-round, and off-season watermelon cultivation is more profitable than seasonal farming. The research was conducted at the Field Laboratory of Khulna University from August to December, 2021 to evaluate the off-season agronomic performance of the selected three watermelon varieties viz. Kanya, Black Super, and Tripti. The experiment investigated both the vegetative and reproductive growth of watermelon following a Randomized Complete Block Design with five replications. Kanya had the longest vines with the most leaves, and nodes followed by Black Super and Tripti. All the watermelon cultivars were found to be similar in producing male flowers, while Black Super and Kanya produced more female flowers, and Black Super also produced the highest fruit yield (6.37 t ha-1), which was statistically similar to Kanya (5.84 t ha-1) and the lowest yield was obtained from Tripti (3.69 t ha-1). Kanya performed better regarding fruit length (22.47 cm), fruit width (30.89 cm), and fruit weight (1.03 kg). Black Super scored the highest TSS (8.43) (Brix0) value, followed by Kanya (7.63) and Tripti (6.39). The amount of weight loss after the harvesting of fruits was less in Black Super, followed by Kanya and Tripti. Black Super had a longer recorded shelf life (28 days) than the other two varieties. The results of this study suggest that Black Super and Kanya can be grown during the off-season in the south-western region of Bangladesh.
西瓜[Citrullus lanatus (Thunb.)]是一年生草本雌雄同株果实，属于葫芦科，在孟加拉国的种植期通常为 2 月至 4 月。不过，西瓜也可以全年种植，淡季种植西瓜比季节性种植西瓜更有利可图。这项研究于 2021 年 8 月至 12 月在库尔纳大学田间实验室进行，目的是评估选定的三个西瓜品种（即 Kanya、Black Super 和 Tripti）的淡季农艺表现。试验采用随机完全区组设计，五次重复，调查了西瓜的无性和生殖生长情况。Kanya 的藤蔓最长，叶片和节数最多，其次是 Black Super 和 Tripti。所有西瓜栽培品种的雄花产量相似，而 Black Super 和 Kanya 的雌花产量更高，Black Super 的果实产量最高（6.37 吨/公顷-1），与 Kanya 的果实产量（5.84 吨/公顷-1）相近，Tripti 的果实产量最低（3.69 吨/公顷-1）。 在果实长度（22.47 厘米）、果实宽度（30.89 厘米）和果实重量（1.03 千克）方面，Kanya 的表现更好。黑超的 TSS 值（8.43）（Brix0）最高，其次是 Kanya（7.63）和 Tripti（6.39）。黑超在采收后的重量损失较小，其次是 Kanya 和 Tripti。黑超的货架期（28 天）比其他两个品种长。研究结果表明，黑超和 Kanya 可以在孟加拉国西南部地区的淡季种植。
{"title":"OFF-SEASON AGRONOMIC PERFORMANCE OF THREE EXOTIC WATERMELON VARIETIES IN THE SOUTH-WESTERN REGION OF BANGLADESH","authors":"R. Remme, M. M. Islam, S. Biswas","doi":"10.53808/kus.2024.21.01.1020-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1020-ls","url":null,"abstract":"The watermelon [Citrullus lanatus (Thunb.)] - a herbaceous, annual, and monoecious fruit - belongs to the family Cucurbitaceae and is usually cultivated in Bangladesh during the period from February to April. However, they may be grown year-round, and off-season watermelon cultivation is more profitable than seasonal farming. The research was conducted at the Field Laboratory of Khulna University from August to December, 2021 to evaluate the off-season agronomic performance of the selected three watermelon varieties viz. Kanya, Black Super, and Tripti. The experiment investigated both the vegetative and reproductive growth of watermelon following a Randomized Complete Block Design with five replications. Kanya had the longest vines with the most leaves, and nodes followed by Black Super and Tripti. All the watermelon cultivars were found to be similar in producing male flowers, while Black Super and Kanya produced more female flowers, and Black Super also produced the highest fruit yield (6.37 t ha-1), which was statistically similar to Kanya (5.84 t ha-1) and the lowest yield was obtained from Tripti (3.69 t ha-1). Kanya performed better regarding fruit length (22.47 cm), fruit width (30.89 cm), and fruit weight (1.03 kg). Black Super scored the highest TSS (8.43) (Brix0) value, followed by Kanya (7.63) and Tripti (6.39). The amount of weight loss after the harvesting of fruits was less in Black Super, followed by Kanya and Tripti. Black Super had a longer recorded shelf life (28 days) than the other two varieties. The results of this study suggest that Black Super and Kanya can be grown during the off-season in the south-western region of Bangladesh.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"40 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140752326","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}
Pub Date : 2024-03-21DOI: 10.53808/kus.2024.21.01.1136-ls
Md. Azharul Islam, Ishrat Jerin, M. Islam, Partho Protim Das, Zhongchuang Liu, B. H. Hameed
Invasive alien species (IAS) are one of the most serious environmental concerns for native biodiversity, as they can alter how the ecosystem functions through species homogenization. Invasive species can affect human health, disrupt ecosystem process, economic damage to agriculture. The conversion of invasive species through hydrothermal carbonization process can reduce the negative impact of invasive species. The objective of this study was to produce and characterize hydrochar as solid bio-energy derived from the invasive species Sphagneticola trilobata (ISST), an invasive plant species, specifically through hydrothermal carbonization. This technology can convert invasive species into biofuel by reducing their negative impact on the environment. The effect of different factors, namely temperature and reaction time towards the hydrochar yield (%) was optimized by central composite design (CCD) using statistical response surface methodology (RSM). Here the optimized conditions for hydrochar production have been identified. The optimized temperature was 180.31 °C and the time was 2.23 hours. The best yield of the hydrochar was 51.54%. To verify the hydrochar as an energy material, the physicochemical, structural and morphological properties were found using SEM, FTIR, TGA, elemental and proximate analysis. The calorific value of hydrochar increased from the calorific value of 13.41 MJ/Kg of Sphagneticola trilobata biomass to 17.03 MJ/Kg. The amounts of sulfur (S) and ash reduced dramatically. Moreover, a greater carbon content was present in the green biomass than oxygen content. Consequently, it is an advantageous technology for improving the characteristics of biomass of invasive species to hydrochar as fuel for energy generation.
{"title":"PRODUCTION AND CHARACTERIZATION OF HYDROTHERMALLY PROCESSRD SOLID BIOENERGY FROM AN INVASIVE SPECIES","authors":"Md. Azharul Islam, Ishrat Jerin, M. Islam, Partho Protim Das, Zhongchuang Liu, B. H. Hameed","doi":"10.53808/kus.2024.21.01.1136-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1136-ls","url":null,"abstract":"Invasive alien species (IAS) are one of the most serious environmental concerns for native biodiversity, as they can alter how the ecosystem functions through species homogenization. Invasive species can affect human health, disrupt ecosystem process, economic damage to agriculture. The conversion of invasive species through hydrothermal carbonization process can reduce the negative impact of invasive species. The objective of this study was to produce and characterize hydrochar as solid bio-energy derived from the invasive species Sphagneticola trilobata (ISST), an invasive plant species, specifically through hydrothermal carbonization. This technology can convert invasive species into biofuel by reducing their negative impact on the environment. The effect of different factors, namely temperature and reaction time towards the hydrochar yield (%) was optimized by central composite design (CCD) using statistical response surface methodology (RSM). Here the optimized conditions for hydrochar production have been identified. The optimized temperature was 180.31 °C and the time was 2.23 hours. The best yield of the hydrochar was 51.54%. To verify the hydrochar as an energy material, the physicochemical, structural and morphological properties were found using SEM, FTIR, TGA, elemental and proximate analysis. The calorific value of hydrochar increased from the calorific value of 13.41 MJ/Kg of Sphagneticola trilobata biomass to 17.03 MJ/Kg. The amounts of sulfur (S) and ash reduced dramatically. Moreover, a greater carbon content was present in the green biomass than oxygen content. Consequently, it is an advantageous technology for improving the characteristics of biomass of invasive species to hydrochar as fuel for energy generation.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"114 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140223603","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}
Pub Date : 2024-03-19DOI: 10.53808/kus.2024.21.01.1096-mb
Ripon Kumar Paul Ripon, Sumon Das
The purpose of this paper intends to explore the employment opportunities in East European countries (EECs) for less-skilled, semi-skilled and skilled migrant workers of Bangladesh through prospects, challenges & way forward. This study, using qualitative approach, has utilized the purposive and snowball sampling technique for executing thirty in-depth interviews along with two FGDs. Data has been analyzed by content analysis and thematic analysis. The findings reveal some lucrative job sectors in the labor market of East European countries, along with a few financial and nonfinancial prospects for Bangladeshi migrants. Some of these prospects include attractive compensation packages, medical allowances, public health facilities, and prompt remittance-sending facilities. Nevertheless, some highly weighted challenges, such as high migration costs, limited knowledge about government services, lack of access to finance, language barriers, cultural differences, and legal support, pose hindrances also. To overcome these challenges, policies and actions such as increasing tax incentives, affordability, easy access to loans, ensuring financial transaction protection, education and awareness campaigns, economic incentives, community building initiatives, easy access to services, and anti-discrimination laws and policies can assist a lot. The government of Bangladesh is providing some support, but most current and prospective workers are not well aware of these services. However, the result of this paper has found EEC to be a prominent source of overseas employment for the less-skilled, semi-skilled, and skilled labor force of Bangladesh.
{"title":"EXPLORING THE EMPLOYMENT OPPORTUNITIES IN EAST EUROPEAN COUNTRIES FOR LESS-SKILLED, SEMI-SKILLED AND SKILLED MIGRANT WORKERS OF BANGLADESH: PROSPECTS, CHALLENGES & WAY FORWARD","authors":"Ripon Kumar Paul Ripon, Sumon Das","doi":"10.53808/kus.2024.21.01.1096-mb","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1096-mb","url":null,"abstract":"The purpose of this paper intends to explore the employment opportunities in East European countries (EECs) for less-skilled, semi-skilled and skilled migrant workers of Bangladesh through prospects, challenges & way forward. This study, using qualitative approach, has utilized the purposive and snowball sampling technique for executing thirty in-depth interviews along with two FGDs. Data has been analyzed by content analysis and thematic analysis. The findings reveal some lucrative job sectors in the labor market of East European countries, along with a few financial and nonfinancial prospects for Bangladeshi migrants. Some of these prospects include attractive compensation packages, medical allowances, public health facilities, and prompt remittance-sending facilities. Nevertheless, some highly weighted challenges, such as high migration costs, limited knowledge about government services, lack of access to finance, language barriers, cultural differences, and legal support, pose hindrances also. To overcome these challenges, policies and actions such as increasing tax incentives, affordability, easy access to loans, ensuring financial transaction protection, education and awareness campaigns, economic incentives, community building initiatives, easy access to services, and anti-discrimination laws and policies can assist a lot. The government of Bangladesh is providing some support, but most current and prospective workers are not well aware of these services. However, the result of this paper has found EEC to be a prominent source of overseas employment for the less-skilled, semi-skilled, and skilled labor force of Bangladesh.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140229442","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}
Pub Date : 2024-03-19DOI: 10.53808/kus.2024.21.01.1074-mb
Sayed Azharul Islam, Md. Amanullah
Though unemployment is directly associated with individuals' health and lifestyle, the nature of the relationship and intensity for specific groups in different socioeconomic conditions is not universal. The study addresses the unemployed university graduates of Bangladesh to understand the relationship of unemployment and mental health. The study aims to assess the effect of unemployment on mental health of unemployed university graduates of Bangladesh. The effect is examined on 385 unemployed graduates. Data were collected through online survey using a semi-structured questionnaire that included the 12-item General Healthcare Questionnaire (GHQ-12). Data were collected using a four-point un-weighted Likert scale. Later on, the data were coded using adjusted Caseness scale to avoid the constraints of marginal values, and to address chronic distress of the respondents. The study observes the presence of a moderate to high degree of mental illness due to unemployment. The respondents were primarily unemployed due to failure of getting a destined job despite their attempt. The independents variables—age, unemployed time, and time between employment and graduation— have significant impacts on mental illness of the respondents. However, sex and mental health remain inconclusive in this study. Mental distress is observed in three latent factors—psychological disorder, social and emotional dysfunction and cognitive disorder—among the respondents. Age, duration of unemployment, and time elapsed after graduation have positive effects on mental illness.
{"title":"THE EFFECT OF UNEMPLOYMENT ON MENTAL HEALTH: A STUDY ON THE UNIVERSITY GRADUATES OF BANGLADESH","authors":"Sayed Azharul Islam, Md. Amanullah","doi":"10.53808/kus.2024.21.01.1074-mb","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1074-mb","url":null,"abstract":"Though unemployment is directly associated with individuals' health and lifestyle, the nature of the relationship and intensity for specific groups in different socioeconomic conditions is not universal. The study addresses the unemployed university graduates of Bangladesh to understand the relationship of unemployment and mental health. The study aims to assess the effect of unemployment on mental health of unemployed university graduates of Bangladesh. The effect is examined on 385 unemployed graduates. Data were collected through online survey using a semi-structured questionnaire that included the 12-item General Healthcare Questionnaire (GHQ-12). Data were collected using a four-point un-weighted Likert scale. Later on, the data were coded using adjusted Caseness scale to avoid the constraints of marginal values, and to address chronic distress of the respondents. The study observes the presence of a moderate to high degree of mental illness due to unemployment. The respondents were primarily unemployed due to failure of getting a destined job despite their attempt. The independents variables—age, unemployed time, and time between employment and graduation— have significant impacts on mental illness of the respondents. However, sex and mental health remain inconclusive in this study. Mental distress is observed in three latent factors—psychological disorder, social and emotional dysfunction and cognitive disorder—among the respondents. Age, duration of unemployment, and time elapsed after graduation have positive effects on mental illness.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"2 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140230670","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}
Different species of tuna are well-known seafood items for their economic importance and nutritional profiles. Tuna is a cheap marine fish of Bangladesh but is not popular with consumers compared to other coastal and marine fishes. In this study, the proximate composition of tuna (Auxis thazard) was compared based on their size and body portions because size and body portions might have a significant impact on the nutritional value of the fish. Three different sizes, i.e., ≤500 g, ≤750 g, and ≥1 kg, and three different body portions, i.e., head, middle, and tail, were subjected to study for proximate analysis. Standard methods (Kjeldal and AOAC) were followed for the determination of biochemical parameters. Among different sizes of fish, the highest average percentage of protein (23.07±0.82), lipid (2.80±0.41), and ash (1.62±0.12) were calculated in the ≥1 kg size group, and among different body portions, the highest average percentage of protein (23.03±0.91), ash (1.62±0.09), and lipid (2.85±0.39) were calculated in the muscle from the middle portion of the fish. The highest average percentage of moisture (73.91±0.95) was found in the tail portion of the small-sized group. This study revealed that the comparatively larger fish and the middle portion of the body are nutritionally rich compared to the other sizes and body parts. Therefore, it is of utmost importance to raise awareness among consumers to ensure adequate nutrition at a cheap price.
{"title":"SIZE AND ORGAN-SPECIFIC VARIATIONS IN PROXIMATE COMPOSITION OF FRIGATE TUNA (Auxis thazard)","authors":"Md. Rashedul Islam, Umma Habiba, Sk. Mustafizur Rahman","doi":"10.53808/kus.2024.21.01.1166-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1166-ls","url":null,"abstract":"Different species of tuna are well-known seafood items for their economic importance and nutritional profiles. Tuna is a cheap marine fish of Bangladesh but is not popular with consumers compared to other coastal and marine fishes. In this study, the proximate composition of tuna (Auxis thazard) was compared based on their size and body portions because size and body portions might have a significant impact on the nutritional value of the fish. Three different sizes, i.e., ≤500 g, ≤750 g, and ≥1 kg, and three different body portions, i.e., head, middle, and tail, were subjected to study for proximate analysis. Standard methods (Kjeldal and AOAC) were followed for the determination of biochemical parameters. Among different sizes of fish, the highest average percentage of protein (23.07±0.82), lipid (2.80±0.41), and ash (1.62±0.12) were calculated in the ≥1 kg size group, and among different body portions, the highest average percentage of protein (23.03±0.91), ash (1.62±0.09), and lipid (2.85±0.39) were calculated in the muscle from the middle portion of the fish. The highest average percentage of moisture (73.91±0.95) was found in the tail portion of the small-sized group. This study revealed that the comparatively larger fish and the middle portion of the body are nutritionally rich compared to the other sizes and body parts. Therefore, it is of utmost importance to raise awareness among consumers to ensure adequate nutrition at a cheap price.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":"364 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139852228","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}
Pub Date : 2024-02-08DOI: 10.53808/kus.2024.21.01.1104-ls
A. K. Ghosh, M. Sarower
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.
{"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":"100 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139794204","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}
Pub Date : 2024-02-08DOI: 10.53808/kus.2024.21.01.1169-ls
S.M. Nahid Jobayer, Ruma Khatun, Mohammad Hasnal Alam, Md. Shamsul Kabir, Manjurul Karim, M. Sarower
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.
{"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":" 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139792739","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}
Pub Date : 2024-02-08DOI: 10.53808/kus.2024.21.01.1168-ls
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
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.
{"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":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139854259","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}
Different species of tuna are well-known seafood items for their economic importance and nutritional profiles. Tuna is a cheap marine fish of Bangladesh but is not popular with consumers compared to other coastal and marine fishes. In this study, the proximate composition of tuna (Auxis thazard) was compared based on their size and body portions because size and body portions might have a significant impact on the nutritional value of the fish. Three different sizes, i.e., ≤500 g, ≤750 g, and ≥1 kg, and three different body portions, i.e., head, middle, and tail, were subjected to study for proximate analysis. Standard methods (Kjeldal and AOAC) were followed for the determination of biochemical parameters. Among different sizes of fish, the highest average percentage of protein (23.07±0.82), lipid (2.80±0.41), and ash (1.62±0.12) were calculated in the ≥1 kg size group, and among different body portions, the highest average percentage of protein (23.03±0.91), ash (1.62±0.09), and lipid (2.85±0.39) were calculated in the muscle from the middle portion of the fish. The highest average percentage of moisture (73.91±0.95) was found in the tail portion of the small-sized group. This study revealed that the comparatively larger fish and the middle portion of the body are nutritionally rich compared to the other sizes and body parts. Therefore, it is of utmost importance to raise awareness among consumers to ensure adequate nutrition at a cheap price.
{"title":"SIZE AND ORGAN-SPECIFIC VARIATIONS IN PROXIMATE COMPOSITION OF FRIGATE TUNA (Auxis thazard)","authors":"Md. Rashedul Islam, Umma Habiba, Sk. Mustafizur Rahman","doi":"10.53808/kus.2024.21.01.1166-ls","DOIUrl":"https://doi.org/10.53808/kus.2024.21.01.1166-ls","url":null,"abstract":"Different species of tuna are well-known seafood items for their economic importance and nutritional profiles. Tuna is a cheap marine fish of Bangladesh but is not popular with consumers compared to other coastal and marine fishes. In this study, the proximate composition of tuna (Auxis thazard) was compared based on their size and body portions because size and body portions might have a significant impact on the nutritional value of the fish. Three different sizes, i.e., ≤500 g, ≤750 g, and ≥1 kg, and three different body portions, i.e., head, middle, and tail, were subjected to study for proximate analysis. Standard methods (Kjeldal and AOAC) were followed for the determination of biochemical parameters. Among different sizes of fish, the highest average percentage of protein (23.07±0.82), lipid (2.80±0.41), and ash (1.62±0.12) were calculated in the ≥1 kg size group, and among different body portions, the highest average percentage of protein (23.03±0.91), ash (1.62±0.09), and lipid (2.85±0.39) were calculated in the muscle from the middle portion of the fish. The highest average percentage of moisture (73.91±0.95) was found in the tail portion of the small-sized group. This study revealed that the comparatively larger fish and the middle portion of the body are nutritionally rich compared to the other sizes and body parts. Therefore, it is of utmost importance to raise awareness among consumers to ensure adequate nutrition at a cheap price.","PeriodicalId":509057,"journal":{"name":"Khulna University Studies","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139792404","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}
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