The near-threatened Ailia coila, commonly referred to as Gangetic ailia, is a catfish species in ... more The near-threatened Ailia coila, commonly referred to as Gangetic ailia, is a catfish species in the Ailiidae family that is indigenous to Bangladesh, Pakistan, Nepal, and India. This study describes the comprehensive explanation of life-history traits of Ailia coila, including length-frequency distribution (LFD), growth pattern (length-weight relationships, LWRs and length-length relationship, LLR), form factor (a 3.0 ), condition factors (allometric, K A ; Fulton’s, K F ; relative, K R and relative weight, W R ), size at first sexual maturity (L m ), optimum catchable length (L opt ) and natural mortality (M w ) from the Tetulia River in southern Bangladesh. Additionally, L α , a 3.0 , L m , M w and L opt from various water bodies worldwide using the existing literature were calculated in this study. A total of 316 samples were randomly collected occasionally using traditional gear for a year from July 2021 to June 2022. With an accuracy of 0.01 cm and 0.01 g, each fish’s total le...
Carp aquaculture is very popular in both seasonal and permanent ponds. Carp seeds are available f... more Carp aquaculture is very popular in both seasonal and permanent ponds. Carp seeds are available for stocking in culture in late May and the ideal water temperature for carp gonad development is 28°C–32°C. The aim of this study was to develop the species’ broods in winter season by raising water temperature, utilizing the greenhouse concept. Two identical ponds, T1 (Greenhouse Pond, GHP) and T2 (Non-greenhouse pond, NGHP) each with three replications were used. Transparent polyethylene-sheet to a bamboo frame covered the T1, whereas no covering for T2. On December 1, 2020, 20 broods/pond stocked equally in the two ponds and reared until February 28, 2021. The mean water temperature of T1 was 28.67±0.49, 28.67±0.78, and 28.83±0.39°C in December, January, and February, respectively compared with T2 found to be 18.25±0.62, 18.58±0.52, and 18.92±0.51°C in December, January, and February, respectively. The average water temperature was 28.75°C and 18.58°C in T1 and T2, respectively. The s...
The present investigation was conducted to assess the status of fish farming and livelihood of fi... more The present investigation was conducted to assess the status of fish farming and livelihood of fish farmer in the Barisal Sadar Upazila, Southern Bangladesh for a period of ten months from March 2015 to January 2016. Well-structured questionnaire was applied for primary data collection from fish farmer. The survey revealed that average pond size was 0.12 ha with 85% of the farmers having ponds of single ownership. Majority farmer (94%) preferred poly-culture system where maximum pond was seasonal (84%). Most of the fish farmers were belonged to the age groups of 36 to 50 years (52%), represented by 80% Muslims.Majority farmer (68%) had tin-shed house where majority were taken health facilities from Upazila doctor (32%). Most of the farmer (55%) lived in joint families where majority family members (41%) were between 4 -5. About 7% had no education while 11%, 49%, 21% and 12% had primary, secondary, higher secondary and bachelor level of education respectively. Fish farming was main ...
Aquaculture; Fish disease; Pond; Rajbari; Water quality The current study was conducted to determ... more Aquaculture; Fish disease; Pond; Rajbari; Water quality The current study was conducted to determine the existing fish culture systems and health management practices in the selected aquafarms of Rajbari District, Bangladesh. Data were collected from 50 fish farmers from October 2019 to February 2020 using questionnaire interview, focus group discussion and crosscheck interview. It was found that most of the aqua farmers had 11 to 15 years’ experience of fish farming and more than 30% had their own ponds. The farmers used to prepare ponds for stocking by several steps like pond drying, bottom mud removal, dyke construction, liming, fertilizer application, and finally stocking. Only 20% fish farmers stocked single fish species like pangas and tilapia, whereas other used to stock two to eight types fish species. Most of the fish farmers sell the harvested fishes either in the local or in city markets. Major fish health problems in the study area were infectious and non-infectious dise...
Journal of Bangladesh Agricultural University, 2020
Hydroponics is a plant growing procedure in water and aquaponics is an eco-friendly, water and en... more Hydroponics is a plant growing procedure in water and aquaponics is an eco-friendly, water and energy-saving bio-integrated recirculating aquaculture system that integrates fish farming and vegetable gardening in a symbiotic close loop system. This experiment was carried to observe the production potentiality of broccoli in different type hydroponics like organic hydroponics (T1), inorganic hydroponics (T2) and tilapia based aquaponics systems (T3) each with three replicates for 106 days from 19 th February to 4 th June, 2018. Three kg vermicompost as T1 was soaked in 90 L water in a drum with a net bag and after that 1 kg vermicompost was added weekly discarding the old one. In case of T2, 28.50 g mixed fertilizer composed of 5g urea, 7.50g TSP, 5g MOP, 5g dolomite, 5g DAP, 0.50 g boron and 0.50 g iron were added in 90 L water and after seven days 22.80 g was added fortnightly. In the aquaponics tank, 10 healthy tilapia fingerlings were released in the same amount of water and 30% protein containing commercial floating feed was fed twice daily at the rate of 3% body weight. Sampling were carried out fortnightly for collecting different parameters of broccoli, fish and water quality. Significantly (P≤0.01) the highest broccoli production was found in T2 (11.79±0.51 tons/ha/106 days) followed by T3 (4.77±0.85 tons/ha/106 days) and the least was in T1 (2.24±0.14 tons/ha/106 days). The analysis showed that, the leaf area, root length and weight were statistically similar in all the three treatments. Fish production was 21.55±3.36 tons/ha/106 days. Nutritional composition of broccoli was also highest in T2 except moisture and ash content. Water dissolved oxygen, electrical conductivity, ammonia, nitrate, nitrogen and phosphorus concentration were suitable for growing broccoli in T2. Whereas in T3, ammonia concentration was high for fish. Broccoli production at higher temperature (31.40 to 36.00°C) in the laboratory than the optimum temperature was possible. Further experiment is needed to carry out in larger areas with different crops and fishes before extension in the field level.
Journal of The Bangladesh Agricultural University, 2020
Prosun Roy, Suprakash Chakma, Zubyda Mushtari Nadia, Newton Saha, Md. Arifur Rahman Department of... more Prosun Roy, Suprakash Chakma, Zubyda Mushtari Nadia, Newton Saha, Md. Arifur Rahman Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh Department of Fisheries Technology, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh Department of Aquatic Animal Health Management, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207 Department of Fisheries Management, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh Department of Fisheries Biology and Genetics, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
The investigation was conducted to evaluate the socioeconomic profile of the fishermen, using Bes... more The investigation was conducted to evaluate the socioeconomic profile of the fishermen, using Best-Worst scale and Pearson’s correlation of Sugondha River, Bangladesh during the period of July 2015 to June 2016 by interviewing 200 fishermen. In Sugondha River, 47% fishermen were engaged in fulltime fishing and 56% preferred group fishing. Maximum fishermen (49%) were middle aged and 56% were found Illiterate. 58% fishermen were lived with joint family and 17% fishermen had 8-above family members. Average annual income of most of the fishermen ranged from was BDT 56,000-70,000 (32%), where 30% had less than BDT 41,000. 48% women of the fishermen family supported their family by Poultry rearing. Age of fishers and income was positively correlated (r = 0.071) where income showed positive relationship with saving (r = 0.765; p<0.01), type (r = 0.561; p<0.01), fishing (r = 0.759; p<0.01), housing (r = 0.351; p<0.01), sanitation (r = 0.540; p<0.01) and health (r = 0.535; p&...
The present investigation was conducted to assess the status of fish farming and livelihood of fi... more The present investigation was conducted to assess the status of fish farming and livelihood of fish farmer in the Barisal Sadar Upazila, Southern Bangladesh for a period of ten months from March 2015 to January 2016. Well-structured questionnaire was applied for primary data collection from fish farmer. The survey revealed that average pond size was 0.12 ha with 85% of the farmers having ponds of single ownership. Majority farmer (94%) preferred poly-culture system where maximum pond was seasonal (84%). Most of the fish farmers were belonged to the age groups of 36 to 50 years (52%), represented by 80% Muslims.Majority farmer (68%) had tin-shed house where majority were taken health facilities from Upazila doctor (32%). Most of the farmer (55%) lived in joint families where majority family members (41%) were between 4-5. About 7% had no education while 11%, 49%, 21% and 12% had primary, secondary, higher secondary and bachelor level of education respectively. Fish farming was main occupation of 24% farmer where majority (30%) was involved with agriculture. Majority farmer (74%) had semi-pucca toilet where 16% had own tube-well. 53% farmer were used wood as cooking fuel where 74% of farmers used their own money for fish farming. 37% were capable to save money in bank or different types of NGOs where 95% farmers improver their socioeconomic conditions by fish farming. Majority fish farmer (84%) achieved training on fish farming from NGOs where 9% had not received any training. Majority households (94%) had electricity facility where most of the farmer (70%) had ordinary social status. Seasonal flood (26%), non-availability of fish fry (25%), insufficient water in dry season (12%), lack of money (11%), Fish disease (9%), pouching (8%), lack of quality feed (5%) and poor technical knowledge (4%) for fish farming was identified as the major constraints.
The present study was conducted to denote the impact of island on the Palordi River during the pe... more The present study was conducted to denote the impact of island on the Palordi River during the period from August 2016 to July 2017. Availability of fish in present time is less than the past time, which represent the main impact of island. Study revealed 39 fish species belonging to 9 orders, 13 families and 35 genera from Palordi River. The dominant order was Cypriniformes (12 species) followed by Perciformes (8 species), Siluriformes (7 species) and Clupeiformes (5 species). Four critically endangered, 7 endangered and 5 vulnerable fish species of Bangladesh were also recorded along with 1 alien silver carp species. Eight types of nets, 4 types of traps, 2-3 types of spears and harpoons and 3 types of hooks and lines were found to be used in the river both traditionally and commercially. Island in palordi river were causes the loss of biodiversity. Large portion of fishermen (72%) were migrate in other professions due to reduced annual income (15, 000-25, 000 BDT) from fishing. Necessary steps should be taken to develop the awareness, government approaches, climate change and management policy, among the people about that impact.
The present investigation was conducted to observe the scenario and livelihood patterns of dried ... more The present investigation was conducted to observe the scenario and livelihood patterns of dried fish producers in Patuakhali and Barisal region from July 2017 to November 2017. In the study area, seventeen fish species were identified for sun drying. Most of the raw fishes were collected from fish landing centers or directly from fishermen and transportation was done by non-mechanized van, rickshaw etc. There were many constraints observed in dried fish marketing activities including lack of storage facilities, lack of capital and involvement of middlemen etc. The producers/processors rarely used DDT and Nogos type of chemicals or insecticides in their products to prevent insect infestation. Most of the dried fish producers belonged to joint family, mostly 5-7 members and Muslims were the dominating in both areas which were 86.67% in Kuakata and 75% in Barisal region. Average 13.33% from Kuakata and 33.33% from Barisal dried fish producers were found SSC passed but no one crossed HSC, mostly having the semi pucca houses. It was found that all of the families used tube-well water for drinking and the entire dried fish producers used electricity in their house. In the study area, most of the dried fish producers (33.33% in Kuakata and 66.67% in Barisal) used semi pucca latrine. From this study, it was found that most of the dried fish producers improved their socioeconomic condition through dried fish marketing activities. Among the two regions it was found that socio economic condition of the dry fish producers of Barisal region are in better position. It was understood that dried fish marketing activities was a potential approach for their better livelihood.
This study aimed to explore the availability of fish species, marketing channel and constraints a... more This study aimed to explore the availability of fish species, marketing channel and constraints associated with bus-stand kacha bazar fish market in order to provide recommendations for efficient fish marketing system by collecting primary data from January to December 2017. A total number of 74 fish species belonging 52 freshwater, 10 exotic, 8 marine and 4 crustacean species were available. Among them highest amounts were Ilish (35%) and lowest amounts were eel fish (2%). A majority portion of fish (70%) was supplied from rivers and ponds of the surrounding area. In this area, the majority (65%) of fish was transported through fishermen-aratdar/local paiker/Mahajan-wholesaler-retailer-consumer channel and least portion (10%) of fish were transported through fish farmer-retailer-consumer channel. Establishment of ice factory, improved electricity and water supply, construction of cold storage, modern communication system was recommended to mitigate the constraints associated with the fish market.
Journal of Agriculture, Food and Environment (JAFE), 2021
The current study was conducted to determine the existing fish culture systems and health managem... more The current study was conducted to determine the existing fish culture systems and health management practices in the selected aquafarms of Rajbari District, Bangladesh. Data were collected from 50 fish farmers from October 2019 to February 2020 using questionnaire interview, focus group discussion and crosscheck interview. It was found that most of the aqua farmers had 11 to 15 years' experience of fish farming and more than 30% had their own ponds. The farmers used to prepare ponds for stocking by several steps like pond drying, bottom mud removal, dyke construction, liming, fertilizer application, and finally stocking. Only 20% fish farmers stocked single fish species like pangas and tilapia, whereas other used to stock two to eight types fish species. Most of the fish farmers sell the harvested fishes either in the local or in city markets. Major fish health problems in the study area were infectious and non-infectious diseases occurred due to bacteria, virus, fungus, parasites, unfavorable water quality and malnutrition. Majority (94%) of the farmers did not have water quality measurement tools. However, the major health problems of fish were ranked by the farmers on the basis of critical condition where fish disease, poor water quality, fish killing as a part of enmity, entrance of wild animal and hamper due to fish eating birds were ranked as 1 st , 2 nd , 3 rd , 4 th and 5 th utmost constraints, respectively. Forty-four percent and 20% respondents received training on different aquaculture techniques from Government and nongovernment organizations, respectively. While during disease outbreak, most of them received technical assistance from the culture fellows. The fish farmers of the study area were not aware of good aquaculture practice maintaining biosecurity. The present study revealed that there is a lack of scientific knowledge of the fish farmers in the studied areas which demands further improvements of the existing condition.
This study was carried out to explore the fish marketing system and species combination in five v... more This study was carried out to explore the fish marketing system and species combination in five village fish markets of Paikgachha Upazila, Bangladesh. Nine marketing channels were found in the retail markets and the shortest channel was observed when consumers directly bought fish from the producers. Most of the retailers were 30-45 years old whereas, 40% had no opportunity to receive institutional education though all of them can sign their name. In the retail markets, most of the fishes were sold without ice. Moreover, a total of 93 species were found whereas 65.59, 10.75, 9.68 and 13.98% were inland fish, marine fish, exotic fish and crustacean species, respectively. Perciformes (29.03%) outnumbered the other 11 orders and Cyprinidae was represented as dominant following 38 families. Most of the fish and shellfishes were (73.12%) available from capture fisheries and the fishes were harvested from nearby rivers of the study area. In the markets 37, 10, 8 and 6 inland species were in the least concern, near threatened, endangered and vulnerable category, respectively in the aspect of their biodiversity status in Bangladesh. Among the inland fishes, 39 species were small indigenous fish species (SIS) and demands for riverine fishes were higher than the culture fishes. The price of most of the fish and shellfishes were within 251 to 500 BDT per kg whereas, the maximum price of Tenualosa ilisha was higher than 750 BDT kg. Thirteen major constraints in the fish markets were identified by the fish traders.
The near-threatened Ailia coila, commonly referred to as Gangetic ailia, is a catfish species in ... more The near-threatened Ailia coila, commonly referred to as Gangetic ailia, is a catfish species in the Ailiidae family that is indigenous to Bangladesh, Pakistan, Nepal, and India. This study describes the comprehensive explanation of life-history traits of Ailia coila, including length-frequency distribution (LFD), growth pattern (length-weight relationships, LWRs and length-length relationship, LLR), form factor (a 3.0 ), condition factors (allometric, K A ; Fulton’s, K F ; relative, K R and relative weight, W R ), size at first sexual maturity (L m ), optimum catchable length (L opt ) and natural mortality (M w ) from the Tetulia River in southern Bangladesh. Additionally, L α , a 3.0 , L m , M w and L opt from various water bodies worldwide using the existing literature were calculated in this study. A total of 316 samples were randomly collected occasionally using traditional gear for a year from July 2021 to June 2022. With an accuracy of 0.01 cm and 0.01 g, each fish’s total le...
Carp aquaculture is very popular in both seasonal and permanent ponds. Carp seeds are available f... more Carp aquaculture is very popular in both seasonal and permanent ponds. Carp seeds are available for stocking in culture in late May and the ideal water temperature for carp gonad development is 28°C–32°C. The aim of this study was to develop the species’ broods in winter season by raising water temperature, utilizing the greenhouse concept. Two identical ponds, T1 (Greenhouse Pond, GHP) and T2 (Non-greenhouse pond, NGHP) each with three replications were used. Transparent polyethylene-sheet to a bamboo frame covered the T1, whereas no covering for T2. On December 1, 2020, 20 broods/pond stocked equally in the two ponds and reared until February 28, 2021. The mean water temperature of T1 was 28.67±0.49, 28.67±0.78, and 28.83±0.39°C in December, January, and February, respectively compared with T2 found to be 18.25±0.62, 18.58±0.52, and 18.92±0.51°C in December, January, and February, respectively. The average water temperature was 28.75°C and 18.58°C in T1 and T2, respectively. The s...
The present investigation was conducted to assess the status of fish farming and livelihood of fi... more The present investigation was conducted to assess the status of fish farming and livelihood of fish farmer in the Barisal Sadar Upazila, Southern Bangladesh for a period of ten months from March 2015 to January 2016. Well-structured questionnaire was applied for primary data collection from fish farmer. The survey revealed that average pond size was 0.12 ha with 85% of the farmers having ponds of single ownership. Majority farmer (94%) preferred poly-culture system where maximum pond was seasonal (84%). Most of the fish farmers were belonged to the age groups of 36 to 50 years (52%), represented by 80% Muslims.Majority farmer (68%) had tin-shed house where majority were taken health facilities from Upazila doctor (32%). Most of the farmer (55%) lived in joint families where majority family members (41%) were between 4 -5. About 7% had no education while 11%, 49%, 21% and 12% had primary, secondary, higher secondary and bachelor level of education respectively. Fish farming was main ...
Aquaculture; Fish disease; Pond; Rajbari; Water quality The current study was conducted to determ... more Aquaculture; Fish disease; Pond; Rajbari; Water quality The current study was conducted to determine the existing fish culture systems and health management practices in the selected aquafarms of Rajbari District, Bangladesh. Data were collected from 50 fish farmers from October 2019 to February 2020 using questionnaire interview, focus group discussion and crosscheck interview. It was found that most of the aqua farmers had 11 to 15 years’ experience of fish farming and more than 30% had their own ponds. The farmers used to prepare ponds for stocking by several steps like pond drying, bottom mud removal, dyke construction, liming, fertilizer application, and finally stocking. Only 20% fish farmers stocked single fish species like pangas and tilapia, whereas other used to stock two to eight types fish species. Most of the fish farmers sell the harvested fishes either in the local or in city markets. Major fish health problems in the study area were infectious and non-infectious dise...
Journal of Bangladesh Agricultural University, 2020
Hydroponics is a plant growing procedure in water and aquaponics is an eco-friendly, water and en... more Hydroponics is a plant growing procedure in water and aquaponics is an eco-friendly, water and energy-saving bio-integrated recirculating aquaculture system that integrates fish farming and vegetable gardening in a symbiotic close loop system. This experiment was carried to observe the production potentiality of broccoli in different type hydroponics like organic hydroponics (T1), inorganic hydroponics (T2) and tilapia based aquaponics systems (T3) each with three replicates for 106 days from 19 th February to 4 th June, 2018. Three kg vermicompost as T1 was soaked in 90 L water in a drum with a net bag and after that 1 kg vermicompost was added weekly discarding the old one. In case of T2, 28.50 g mixed fertilizer composed of 5g urea, 7.50g TSP, 5g MOP, 5g dolomite, 5g DAP, 0.50 g boron and 0.50 g iron were added in 90 L water and after seven days 22.80 g was added fortnightly. In the aquaponics tank, 10 healthy tilapia fingerlings were released in the same amount of water and 30% protein containing commercial floating feed was fed twice daily at the rate of 3% body weight. Sampling were carried out fortnightly for collecting different parameters of broccoli, fish and water quality. Significantly (P≤0.01) the highest broccoli production was found in T2 (11.79±0.51 tons/ha/106 days) followed by T3 (4.77±0.85 tons/ha/106 days) and the least was in T1 (2.24±0.14 tons/ha/106 days). The analysis showed that, the leaf area, root length and weight were statistically similar in all the three treatments. Fish production was 21.55±3.36 tons/ha/106 days. Nutritional composition of broccoli was also highest in T2 except moisture and ash content. Water dissolved oxygen, electrical conductivity, ammonia, nitrate, nitrogen and phosphorus concentration were suitable for growing broccoli in T2. Whereas in T3, ammonia concentration was high for fish. Broccoli production at higher temperature (31.40 to 36.00°C) in the laboratory than the optimum temperature was possible. Further experiment is needed to carry out in larger areas with different crops and fishes before extension in the field level.
Journal of The Bangladesh Agricultural University, 2020
Prosun Roy, Suprakash Chakma, Zubyda Mushtari Nadia, Newton Saha, Md. Arifur Rahman Department of... more Prosun Roy, Suprakash Chakma, Zubyda Mushtari Nadia, Newton Saha, Md. Arifur Rahman Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh Department of Fisheries Technology, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh Department of Aquatic Animal Health Management, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207 Department of Fisheries Management, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh Department of Fisheries Biology and Genetics, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
The investigation was conducted to evaluate the socioeconomic profile of the fishermen, using Bes... more The investigation was conducted to evaluate the socioeconomic profile of the fishermen, using Best-Worst scale and Pearson’s correlation of Sugondha River, Bangladesh during the period of July 2015 to June 2016 by interviewing 200 fishermen. In Sugondha River, 47% fishermen were engaged in fulltime fishing and 56% preferred group fishing. Maximum fishermen (49%) were middle aged and 56% were found Illiterate. 58% fishermen were lived with joint family and 17% fishermen had 8-above family members. Average annual income of most of the fishermen ranged from was BDT 56,000-70,000 (32%), where 30% had less than BDT 41,000. 48% women of the fishermen family supported their family by Poultry rearing. Age of fishers and income was positively correlated (r = 0.071) where income showed positive relationship with saving (r = 0.765; p<0.01), type (r = 0.561; p<0.01), fishing (r = 0.759; p<0.01), housing (r = 0.351; p<0.01), sanitation (r = 0.540; p<0.01) and health (r = 0.535; p&...
The present investigation was conducted to assess the status of fish farming and livelihood of fi... more The present investigation was conducted to assess the status of fish farming and livelihood of fish farmer in the Barisal Sadar Upazila, Southern Bangladesh for a period of ten months from March 2015 to January 2016. Well-structured questionnaire was applied for primary data collection from fish farmer. The survey revealed that average pond size was 0.12 ha with 85% of the farmers having ponds of single ownership. Majority farmer (94%) preferred poly-culture system where maximum pond was seasonal (84%). Most of the fish farmers were belonged to the age groups of 36 to 50 years (52%), represented by 80% Muslims.Majority farmer (68%) had tin-shed house where majority were taken health facilities from Upazila doctor (32%). Most of the farmer (55%) lived in joint families where majority family members (41%) were between 4-5. About 7% had no education while 11%, 49%, 21% and 12% had primary, secondary, higher secondary and bachelor level of education respectively. Fish farming was main occupation of 24% farmer where majority (30%) was involved with agriculture. Majority farmer (74%) had semi-pucca toilet where 16% had own tube-well. 53% farmer were used wood as cooking fuel where 74% of farmers used their own money for fish farming. 37% were capable to save money in bank or different types of NGOs where 95% farmers improver their socioeconomic conditions by fish farming. Majority fish farmer (84%) achieved training on fish farming from NGOs where 9% had not received any training. Majority households (94%) had electricity facility where most of the farmer (70%) had ordinary social status. Seasonal flood (26%), non-availability of fish fry (25%), insufficient water in dry season (12%), lack of money (11%), Fish disease (9%), pouching (8%), lack of quality feed (5%) and poor technical knowledge (4%) for fish farming was identified as the major constraints.
The present study was conducted to denote the impact of island on the Palordi River during the pe... more The present study was conducted to denote the impact of island on the Palordi River during the period from August 2016 to July 2017. Availability of fish in present time is less than the past time, which represent the main impact of island. Study revealed 39 fish species belonging to 9 orders, 13 families and 35 genera from Palordi River. The dominant order was Cypriniformes (12 species) followed by Perciformes (8 species), Siluriformes (7 species) and Clupeiformes (5 species). Four critically endangered, 7 endangered and 5 vulnerable fish species of Bangladesh were also recorded along with 1 alien silver carp species. Eight types of nets, 4 types of traps, 2-3 types of spears and harpoons and 3 types of hooks and lines were found to be used in the river both traditionally and commercially. Island in palordi river were causes the loss of biodiversity. Large portion of fishermen (72%) were migrate in other professions due to reduced annual income (15, 000-25, 000 BDT) from fishing. Necessary steps should be taken to develop the awareness, government approaches, climate change and management policy, among the people about that impact.
The present investigation was conducted to observe the scenario and livelihood patterns of dried ... more The present investigation was conducted to observe the scenario and livelihood patterns of dried fish producers in Patuakhali and Barisal region from July 2017 to November 2017. In the study area, seventeen fish species were identified for sun drying. Most of the raw fishes were collected from fish landing centers or directly from fishermen and transportation was done by non-mechanized van, rickshaw etc. There were many constraints observed in dried fish marketing activities including lack of storage facilities, lack of capital and involvement of middlemen etc. The producers/processors rarely used DDT and Nogos type of chemicals or insecticides in their products to prevent insect infestation. Most of the dried fish producers belonged to joint family, mostly 5-7 members and Muslims were the dominating in both areas which were 86.67% in Kuakata and 75% in Barisal region. Average 13.33% from Kuakata and 33.33% from Barisal dried fish producers were found SSC passed but no one crossed HSC, mostly having the semi pucca houses. It was found that all of the families used tube-well water for drinking and the entire dried fish producers used electricity in their house. In the study area, most of the dried fish producers (33.33% in Kuakata and 66.67% in Barisal) used semi pucca latrine. From this study, it was found that most of the dried fish producers improved their socioeconomic condition through dried fish marketing activities. Among the two regions it was found that socio economic condition of the dry fish producers of Barisal region are in better position. It was understood that dried fish marketing activities was a potential approach for their better livelihood.
This study aimed to explore the availability of fish species, marketing channel and constraints a... more This study aimed to explore the availability of fish species, marketing channel and constraints associated with bus-stand kacha bazar fish market in order to provide recommendations for efficient fish marketing system by collecting primary data from January to December 2017. A total number of 74 fish species belonging 52 freshwater, 10 exotic, 8 marine and 4 crustacean species were available. Among them highest amounts were Ilish (35%) and lowest amounts were eel fish (2%). A majority portion of fish (70%) was supplied from rivers and ponds of the surrounding area. In this area, the majority (65%) of fish was transported through fishermen-aratdar/local paiker/Mahajan-wholesaler-retailer-consumer channel and least portion (10%) of fish were transported through fish farmer-retailer-consumer channel. Establishment of ice factory, improved electricity and water supply, construction of cold storage, modern communication system was recommended to mitigate the constraints associated with the fish market.
Journal of Agriculture, Food and Environment (JAFE), 2021
The current study was conducted to determine the existing fish culture systems and health managem... more The current study was conducted to determine the existing fish culture systems and health management practices in the selected aquafarms of Rajbari District, Bangladesh. Data were collected from 50 fish farmers from October 2019 to February 2020 using questionnaire interview, focus group discussion and crosscheck interview. It was found that most of the aqua farmers had 11 to 15 years' experience of fish farming and more than 30% had their own ponds. The farmers used to prepare ponds for stocking by several steps like pond drying, bottom mud removal, dyke construction, liming, fertilizer application, and finally stocking. Only 20% fish farmers stocked single fish species like pangas and tilapia, whereas other used to stock two to eight types fish species. Most of the fish farmers sell the harvested fishes either in the local or in city markets. Major fish health problems in the study area were infectious and non-infectious diseases occurred due to bacteria, virus, fungus, parasites, unfavorable water quality and malnutrition. Majority (94%) of the farmers did not have water quality measurement tools. However, the major health problems of fish were ranked by the farmers on the basis of critical condition where fish disease, poor water quality, fish killing as a part of enmity, entrance of wild animal and hamper due to fish eating birds were ranked as 1 st , 2 nd , 3 rd , 4 th and 5 th utmost constraints, respectively. Forty-four percent and 20% respondents received training on different aquaculture techniques from Government and nongovernment organizations, respectively. While during disease outbreak, most of them received technical assistance from the culture fellows. The fish farmers of the study area were not aware of good aquaculture practice maintaining biosecurity. The present study revealed that there is a lack of scientific knowledge of the fish farmers in the studied areas which demands further improvements of the existing condition.
This study was carried out to explore the fish marketing system and species combination in five v... more This study was carried out to explore the fish marketing system and species combination in five village fish markets of Paikgachha Upazila, Bangladesh. Nine marketing channels were found in the retail markets and the shortest channel was observed when consumers directly bought fish from the producers. Most of the retailers were 30-45 years old whereas, 40% had no opportunity to receive institutional education though all of them can sign their name. In the retail markets, most of the fishes were sold without ice. Moreover, a total of 93 species were found whereas 65.59, 10.75, 9.68 and 13.98% were inland fish, marine fish, exotic fish and crustacean species, respectively. Perciformes (29.03%) outnumbered the other 11 orders and Cyprinidae was represented as dominant following 38 families. Most of the fish and shellfishes were (73.12%) available from capture fisheries and the fishes were harvested from nearby rivers of the study area. In the markets 37, 10, 8 and 6 inland species were in the least concern, near threatened, endangered and vulnerable category, respectively in the aspect of their biodiversity status in Bangladesh. Among the inland fishes, 39 species were small indigenous fish species (SIS) and demands for riverine fishes were higher than the culture fishes. The price of most of the fish and shellfishes were within 251 to 500 BDT per kg whereas, the maximum price of Tenualosa ilisha was higher than 750 BDT kg. Thirteen major constraints in the fish markets were identified by the fish traders.
Uploads
Papers by Prosun Roy