Fishery and the population dynamics of the blood clam Anadara granosa (Linnaeus) in the Kakinada bay

Narasimham, K A (1988) Fishery and the population dynamics of the blood clam Anadara granosa (Linnaeus) in the Kakinada bay. CMFRI Bulletin, 42 (1). pp. 130-134.

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Abstract

The blood clam, Anadara granosa is fished throughout the year in the Kakinada Bay by fishermen residing in 15 villages. During 1978-81. at Yatlmoga Kakinada) the blood clam catch, effort and catch per unit effort varied from 104 to 222 t, 3414 to 6295 man-days and 30.4 to 35.3 kg/man day respectively. The instantaneous rates of total (Z), natural (M) and fishing (F) mortality rates are estimated at 3.9,1.3 and 2 6 respectively- In the presently exploited population, other parameters estimated are the age at recruitment (tr) = 0.29 yr, age at first capture [to] = 1-0 yr and the maximum age [ta] = 5.62 yr. At present the yield in weight per recruit [Yw/R] is about 9-5 g; It Increases with increase In F and it is less for greater values of tc. It is suggested that at the current level of F, maximum Yw/R value of 10 42 g is possible if tc is reduced to 0.6 yr.

Item Type:Article
Uncontrolled Keywords:Fishery; population dynamics; blood clam; Anadara granosa (Linnaeus); Kakinada bay
Subjects:Molluscan Fisheries
Molluscan Fisheries > Clam
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:2558
Deposited By:Dr. V Mohan
Deposited On:24 Aug 2010 12:45
Last Modified:24 Aug 2010 12:45

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