Population Dynamics of an Exploited Stock of the Clam Paphia malabarica of Astamudi Estuary (South India)

Appukuttan, K K and Aravindan, C M and Yohannan, T M and Balasubramanian, N K (1996) Population Dynamics of an Exploited Stock of the Clam Paphia malabarica of Astamudi Estuary (South India). In: The Fourth Indian Fisheries Forum, Proceedings, 24-28 November, 1996, Kochi.

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Abstract

Growth studies conducted in 1989-90 on Ptrphiu nruluh~rrrco from Ashtamudi estuary, South India, showed that it attaines 30 mm length in one year, 38 mm in two years and 41 mm in three years. The La was calculated as 44.4 mm. In commercial catches, I-year class dominated, followed by 0-year, 2-year and 3+year classes. Average total mortality rate Z, was estimated as 2.11, natural mortality rate as 1.17 and fishing mortality rate F as 0.94. The exploitation rate was 0.3915, the annual stock (YIU) 3234.9 t and the estimate of MSY was 3408.8 t. It is concluded that the present level of exploitation is closer to the optimum.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Population Dynamics; Clam; Paphia malabarica; Astamudi Estuary
Subjects:Molluscan Fisheries > Clam
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:4558
Deposited By:INVALID USER
Deposited On:30 Oct 2010 16:27
Last Modified:30 Oct 2010 16:27

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