Abstract:
The aim of this study to report about population parameter, growth, mortality and
exploitation level of cockles, Scapharca cornea at lagoon,Setiu Wetland that are
examined between May 2012 until April 2013. There are significant correlations
between length and weight for all month of fresh weight monthly data. Monthly
length frequency data of S. cornea were analyzed by FiSA T software for estimation of
population parameters like asymptotic length (Lex:), growth co-efficient (K) and
recruitment pattern to evaluate the status of the cockles at Kg Kuala Setiu. Asymp-
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totic length (Lex:) was 4.46 cm and growth co-efficient (K) was 0.84 yr . The growth
performance index (D ) was 1.22. The growth pattern showed negative allometric
growths with b value range are 1.164 to 2.6592 was obtained. This Arcidae family
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have total mortality (Z) was estimated by length-converted catch curve at 1.54 yr ,
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fishing mortality (F) at 1.17 yr , and natural mortality (M) at 2. 71 yr . The
exploitation level (E) of S. cornea was 0.76 and the maximum allowable limit of
exploitation (E ) was 0.42. The recruitment pattern was continuous with twice peak
max
event per year. The higer exploitation rate (E = 0.76) than allowable exploitation
estimation E5 o (0.27) show that stock condition was exploited at maximun level in the
lagoon of Setiu Wetland, Terengganu through higher commercial scale by community
of Setiu Wetland.
