Population dynamics of venus clam Meretrix meretrix from the Moheshkali Island in the Coxs bazar coast of Bangladesh

Nurul Amin S. M., . and Zafar M., . and Barua M., . Population dynamics of venus clam Meretrix meretrix from the Moheshkali Island in the Coxs bazar coast of Bangladesh. pp. 1031-1043. ISSN 0116-6514

The population structure growth mortality and exploitation status of Venus clam Meretrix meretrix were examined in the Moheshkali channel of Bangladesh coast between June 2003 and May 2004. Monthly length frequency data of M. meretrix were analyzed by FiSAT software for estimation of population parameters like asymptotic length (L�) growth co-efficient (K) and recruitment pattern to evaluate the status of the stock. Asymptotic length (L�) was 8.14 cm and growth co-efficient (K) was 0.97 yr-. The growth performance index (/) was 2.07. The growth pattern showed negative allometric growth with an asymptotic weight (W�) of 129.69 g obtained. This Venus clam attained 5.05 cm at the end of one year. Total mortality (Z) was estimated by length-converted catch curve at 2.63 yr- fishing mortality (F) at 0.02 yr- and natural mortality (M) at 2.61 yr-. The exploitation level (E) of M. meretrix was 0.01 and the maximum allowable limit of exploitation (Emax) was 0.58. The recruitment pattern was continuous with one major peak event per year. Habitat temperature dissolved oxygen and salinity range of Venus clam were 25.5-31C 4.02-6.50 mg.L- and 12.36 to 26 ppt respectively. The exploitation rate (E 0.01) indicated that the fishing pressure on M. meretrix was very low and the stock condition might be unexploited in the Moheskhali channel of Bangladesh.

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Abstract

The population structure growth mortality and exploitation status of Venus clam Meretrix meretrix were examined in the Moheshkali channel of Bangladesh coast between June 2003 and May 2004. Monthly length frequency data of M. meretrix were analyzed by FiSAT software for estimation of population parameters like asymptotic length (L�) growth co-efficient (K) and recruitment pattern to evaluate the status of the stock. Asymptotic length (L�) was 8.14 cm and growth co-efficient (K) was 0.97 yr-. The growth performance index (/) was 2.07. The growth pattern showed negative allometric growth with an asymptotic weight (W�) of 129.69 g obtained. This Venus clam attained 5.05 cm at the end of one year. Total mortality (Z) was estimated by length-converted catch curve at 2.63 yr- fishing mortality (F) at 0.02 yr- and natural mortality (M) at 2.61 yr-. The exploitation level (E) of M. meretrix was 0.01 and the maximum allowable limit of exploitation (Emax) was 0.58. The recruitment pattern was continuous with one major peak event per year. Habitat temperature dissolved oxygen and salinity range of Venus clam were 25.5-31C 4.02-6.50 mg.L- and 12.36 to 26 ppt respectively. The exploitation rate (E 0.01) indicated that the fishing pressure on M. meretrix was very low and the stock condition might be unexploited in the Moheskhali channel of Bangladesh.

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Item Type:	Article
AGROVOC Term:	Meretrix
AGROVOC Term:	Meretrix meretrix
AGROVOC Term:	Bivalvia
AGROVOC Term:	Clams
AGROVOC Term:	Aquatic animals
AGROVOC Term:	Aquatic organisms
AGROVOC Term:	Population dynamics
AGROVOC Term:	Random sampling
AGROVOC Term:	Computer software
AGROVOC Term:	Techniques
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:53
URI:	http://webagris.upm.edu.my/id/eprint/7846

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