My name is Md. Fida Hassan Kafi, at present i am a B.Sc. Fisheries final year student of Bangladesh Agricultural University. My passion is remaining attached in fisheries research all over my life. Phone: +8801721704822
A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh... more A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh. The study was aimed to formulate recommendation for effective management of the fisheries of the river. Different fish capture methods, fishing gears and crafts were usually used in the study area. Various types of fishing gears were found to operate in this river, among them, a total of six types of fishing nets were used by the fishermen. A total of 20 species of fishes were identified in the catches of different nets in this river. The highest numbers (20) of species were recorded in the catches of ber jal while the lowest numbers (3) were recorded in case of moiya jal. Different species of fish fauna were caught by the fishers in Meghna river including carps, barbs, minnows, catfish, gobies, perch, murrels, eels, small prawn, miscellaneous species. Most of them are found all the year round except carps, perch and Murrells. Maximum catches are obtained during the month of July to De...
The present study was conducted to evaluate the effects of dissolved oxygen concentrations on gro... more The present study was conducted to evaluate the effects of dissolved oxygen concentrations on growth, survival and gonadal development of freshwater pearl mussel (Lamellidens marginalis). Twenty adult L. marginalis were exposed to each of the five different concentrations of dissolved oxygen (DO) i.e (T0, no aeration), and T1, T2, T3 and T4 with one, two, three and four air stone aerators, respectively in fifteen glass aquaria each containing 10L of pond water. DO concentrations were significantly higher in all the treatments compared to the control but there were no significant differences among the treatments. There were significant differences in the growth and survival rates between control and treatments. The relative growth rates (%) were significantly higher in the highest oxygen concentration (T4) compared to other treatments. The survival rate was zero in control (T0), whereas it was 66.67%, 70.00%, 71.67% and 73.33%, respectively for T1, T2, T3 and T4. On day-30, oocytes i...
The present study was conducted to evaluate the effects of dissolved oxygen concentrations on gro... more The present study was conducted to evaluate the effects of dissolved oxygen concentrations on growth, survival and gonadal development of freshwater pearl mussel (Lamellidens marginalis). Twenty adult L. marginalis were exposed to each of the five different concentrations of dissolved oxygen (DO) i.e (T0, no aeration), and T1, T2, T3 and T4 with one, two, three and four air stone aerators, respectively in fifteen glass aquaria each containing 10L of pond water. DO concentrations were significantly higher in all the treatments compared to the control but there were no significant differences among the treatments. There were significant differences in the growth and survival rates between control and treatments. The relative growth rates (%) were significantly higher in the highest oxygen concentration (T4) compared to other treatments. The survival rate was zero in control (T0), whereas it was 66.67%, 70.00%, 71.67% and 73.33%, respectively for T1, T2, T3 and T4. On day-30, oocytes in T0 were found to be smaller in size, with developing acini and no previtellogenic oocytes; whereas in T1, T2, T3 and T4, previtellogenic oocytes and larger acini were evident. On day-60, vitellogenic oocytes along with few underdeveloped oocytes started to detach from the acini walls, as well as some already started migration to germinal duct on day-90. This indicates that ovaries of all the treatments were ripe and were ready to spawn between day-60 and-90. On day-30, secondary spermatocytes were observed in testicular acini in case of T0, whereas more developed and dense spermatids were evident in T1, T2, T3 and T4. These results indicate that testes were in late development stages in T0, whereas they were ripe in all the treatments. The current findings indicate that hypoxia slows down growth, reduces survival rate and retards development of reproductive organs in L. marginalis.
A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh... more A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh. The
study was aimed to formulate recommendation for effective management of the fisheries of the river.
Different fish capture methods, fishing gears and crafts were usually used in the study area. Various types
of fishing gears were found to operate in this river, among them, a total of six types of fishing nets were
used by the fishermen. A total of 20 species of fishes were identified in the catches of different nets in this
river. The highest numbers (20) of species were recorded in the catches of ber jal while the lowest numbers
(3) were recorded in case of moiya jal. Different species of fish fauna were caught by the fishers in Meghna
river including carps, barbs, minnows, catfish, gobies, perch, murrels, eels, small prawn, miscellaneous
species. Most of them are found all the year round except carps, perch and Murrells. Maximum catches are
obtained during the month of July to December. The highest catch 500g and 86.11% was recorded whereas
the lowest was 8g and 1.39% during the study period. The highest percentage of respondent (45%) caught
fish of 3.1-4.0 kg/person with maximum duration of 6-7h of fishing. Decline in fish catch (100%) was the
greatest problem to the fishers followed by lack of capital for purchase of fishing gear and net. The status of
fisheries at Meghna river is closely related to the livelihood of fishermen. Steps to be taken at government
and non government level to support their livelihood.
The study was conducted to determine the socio-economic condition of the fisher’s community over ... more The study was conducted to determine the socio-economic condition of the fisher’s community over an area of 4 kilometers of Meghna River at Ashuganj upazila under Brahmanbaria district from January to April 2009. In this study, 10 fishers were randomly selected from each kilometer, thus the total sample size was 40. Studies on socio-economic conditions of Meghna river fishermen were carried out in terms of religious status, age structure, educational status, health facilities, and drinking water facilities, housing condition, sanitary facilities and annual income, catch and species composition. It was found that 90% of the fishermen were Hindus and 10% were Muslim in study area 1 and 65% of the fishermen were Muslim and 35% were Hindus in study area 2. About 2.5% had literacy up to secondary level and 45% can sign only. About 75% and 80% of the fishermen had katcha house while 7.5% and 2.5% fishermen had half-building house in study area 1 and study area 2 respectively. Sanitary conditions of the fishermen were very poor and most of the toilets (50%) were katcha. About 15% of the fishermen have their own tube well and 50% of the fishermen used katcha toilet in study area-1 and in study area-2 47.5% of the fishermen used katcha toilet, 42.5% used semi pucca toilet and the rest of them used pucca toilet. Family size of the fishermen consisted of 2-11 persons. Among those, small family consisted of 2-4 members and large family consisted above 7 members. The highest income of fishermen from Tk 1,00,000-2,00,000/year was 52.5% and the lowest income of fishermen from Tk 25,000-50,000/year was 5%. Besides, various recommendations and necessary measures have been suggested to improve livelihood of fishers’ community of the Meghna river.
A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh... more A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh. The study was aimed to formulate recommendation for effective management of the fisheries of the river. Different fish capture methods, fishing gears and crafts were usually used in the study area. Various types of fishing gears were found to operate in this river, among them, a total of six types of fishing nets were used by the fishermen. A total of 20 species of fishes were identified in the catches of different nets in this river. The highest numbers (20) of species were recorded in the catches of ber jal while the lowest numbers (3) were recorded in case of moiya jal. Different species of fish fauna were caught by the fishers in Meghna river including carps, barbs, minnows, catfish, gobies, perch, murrels, eels, small prawn, miscellaneous species. Most of them are found all the year round except carps, perch and Murrells. Maximum catches are obtained during the month of July to De...
The present study was conducted to evaluate the effects of dissolved oxygen concentrations on gro... more The present study was conducted to evaluate the effects of dissolved oxygen concentrations on growth, survival and gonadal development of freshwater pearl mussel (Lamellidens marginalis). Twenty adult L. marginalis were exposed to each of the five different concentrations of dissolved oxygen (DO) i.e (T0, no aeration), and T1, T2, T3 and T4 with one, two, three and four air stone aerators, respectively in fifteen glass aquaria each containing 10L of pond water. DO concentrations were significantly higher in all the treatments compared to the control but there were no significant differences among the treatments. There were significant differences in the growth and survival rates between control and treatments. The relative growth rates (%) were significantly higher in the highest oxygen concentration (T4) compared to other treatments. The survival rate was zero in control (T0), whereas it was 66.67%, 70.00%, 71.67% and 73.33%, respectively for T1, T2, T3 and T4. On day-30, oocytes i...
The present study was conducted to evaluate the effects of dissolved oxygen concentrations on gro... more The present study was conducted to evaluate the effects of dissolved oxygen concentrations on growth, survival and gonadal development of freshwater pearl mussel (Lamellidens marginalis). Twenty adult L. marginalis were exposed to each of the five different concentrations of dissolved oxygen (DO) i.e (T0, no aeration), and T1, T2, T3 and T4 with one, two, three and four air stone aerators, respectively in fifteen glass aquaria each containing 10L of pond water. DO concentrations were significantly higher in all the treatments compared to the control but there were no significant differences among the treatments. There were significant differences in the growth and survival rates between control and treatments. The relative growth rates (%) were significantly higher in the highest oxygen concentration (T4) compared to other treatments. The survival rate was zero in control (T0), whereas it was 66.67%, 70.00%, 71.67% and 73.33%, respectively for T1, T2, T3 and T4. On day-30, oocytes in T0 were found to be smaller in size, with developing acini and no previtellogenic oocytes; whereas in T1, T2, T3 and T4, previtellogenic oocytes and larger acini were evident. On day-60, vitellogenic oocytes along with few underdeveloped oocytes started to detach from the acini walls, as well as some already started migration to germinal duct on day-90. This indicates that ovaries of all the treatments were ripe and were ready to spawn between day-60 and-90. On day-30, secondary spermatocytes were observed in testicular acini in case of T0, whereas more developed and dense spermatids were evident in T1, T2, T3 and T4. These results indicate that testes were in late development stages in T0, whereas they were ripe in all the treatments. The current findings indicate that hypoxia slows down growth, reduces survival rate and retards development of reproductive organs in L. marginalis.
A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh... more A survey was conducted to determine the current status of fisheries of Meghna river of Bangladesh. The
study was aimed to formulate recommendation for effective management of the fisheries of the river.
Different fish capture methods, fishing gears and crafts were usually used in the study area. Various types
of fishing gears were found to operate in this river, among them, a total of six types of fishing nets were
used by the fishermen. A total of 20 species of fishes were identified in the catches of different nets in this
river. The highest numbers (20) of species were recorded in the catches of ber jal while the lowest numbers
(3) were recorded in case of moiya jal. Different species of fish fauna were caught by the fishers in Meghna
river including carps, barbs, minnows, catfish, gobies, perch, murrels, eels, small prawn, miscellaneous
species. Most of them are found all the year round except carps, perch and Murrells. Maximum catches are
obtained during the month of July to December. The highest catch 500g and 86.11% was recorded whereas
the lowest was 8g and 1.39% during the study period. The highest percentage of respondent (45%) caught
fish of 3.1-4.0 kg/person with maximum duration of 6-7h of fishing. Decline in fish catch (100%) was the
greatest problem to the fishers followed by lack of capital for purchase of fishing gear and net. The status of
fisheries at Meghna river is closely related to the livelihood of fishermen. Steps to be taken at government
and non government level to support their livelihood.
The study was conducted to determine the socio-economic condition of the fisher’s community over ... more The study was conducted to determine the socio-economic condition of the fisher’s community over an area of 4 kilometers of Meghna River at Ashuganj upazila under Brahmanbaria district from January to April 2009. In this study, 10 fishers were randomly selected from each kilometer, thus the total sample size was 40. Studies on socio-economic conditions of Meghna river fishermen were carried out in terms of religious status, age structure, educational status, health facilities, and drinking water facilities, housing condition, sanitary facilities and annual income, catch and species composition. It was found that 90% of the fishermen were Hindus and 10% were Muslim in study area 1 and 65% of the fishermen were Muslim and 35% were Hindus in study area 2. About 2.5% had literacy up to secondary level and 45% can sign only. About 75% and 80% of the fishermen had katcha house while 7.5% and 2.5% fishermen had half-building house in study area 1 and study area 2 respectively. Sanitary conditions of the fishermen were very poor and most of the toilets (50%) were katcha. About 15% of the fishermen have their own tube well and 50% of the fishermen used katcha toilet in study area-1 and in study area-2 47.5% of the fishermen used katcha toilet, 42.5% used semi pucca toilet and the rest of them used pucca toilet. Family size of the fishermen consisted of 2-11 persons. Among those, small family consisted of 2-4 members and large family consisted above 7 members. The highest income of fishermen from Tk 1,00,000-2,00,000/year was 52.5% and the lowest income of fishermen from Tk 25,000-50,000/year was 5%. Besides, various recommendations and necessary measures have been suggested to improve livelihood of fishers’ community of the Meghna river.
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study was aimed to formulate recommendation for effective management of the fisheries of the river.
Different fish capture methods, fishing gears and crafts were usually used in the study area. Various types
of fishing gears were found to operate in this river, among them, a total of six types of fishing nets were
used by the fishermen. A total of 20 species of fishes were identified in the catches of different nets in this
river. The highest numbers (20) of species were recorded in the catches of ber jal while the lowest numbers
(3) were recorded in case of moiya jal. Different species of fish fauna were caught by the fishers in Meghna
river including carps, barbs, minnows, catfish, gobies, perch, murrels, eels, small prawn, miscellaneous
species. Most of them are found all the year round except carps, perch and Murrells. Maximum catches are
obtained during the month of July to December. The highest catch 500g and 86.11% was recorded whereas
the lowest was 8g and 1.39% during the study period. The highest percentage of respondent (45%) caught
fish of 3.1-4.0 kg/person with maximum duration of 6-7h of fishing. Decline in fish catch (100%) was the
greatest problem to the fishers followed by lack of capital for purchase of fishing gear and net. The status of
fisheries at Meghna river is closely related to the livelihood of fishermen. Steps to be taken at government
and non government level to support their livelihood.
study was aimed to formulate recommendation for effective management of the fisheries of the river.
Different fish capture methods, fishing gears and crafts were usually used in the study area. Various types
of fishing gears were found to operate in this river, among them, a total of six types of fishing nets were
used by the fishermen. A total of 20 species of fishes were identified in the catches of different nets in this
river. The highest numbers (20) of species were recorded in the catches of ber jal while the lowest numbers
(3) were recorded in case of moiya jal. Different species of fish fauna were caught by the fishers in Meghna
river including carps, barbs, minnows, catfish, gobies, perch, murrels, eels, small prawn, miscellaneous
species. Most of them are found all the year round except carps, perch and Murrells. Maximum catches are
obtained during the month of July to December. The highest catch 500g and 86.11% was recorded whereas
the lowest was 8g and 1.39% during the study period. The highest percentage of respondent (45%) caught
fish of 3.1-4.0 kg/person with maximum duration of 6-7h of fishing. Decline in fish catch (100%) was the
greatest problem to the fishers followed by lack of capital for purchase of fishing gear and net. The status of
fisheries at Meghna river is closely related to the livelihood of fishermen. Steps to be taken at government
and non government level to support their livelihood.