Population Dynamics of Anchovies Encrasicholina devisi and Encrasicholina punctifer at Lawas and Labuan Coastal Water

Nur Syakirah, Jamil (2022) Population Dynamics of Anchovies Encrasicholina devisi and Encrasicholina punctifer at Lawas and Labuan Coastal Water. [Final Year Project Report] (Unpublished)

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Abstract

The population dynamics of anchovies sampled from the coastal waters of Lawas and Labuan from 2017 to 2018 was described using the length-L and weight-W relationships (W=aLb). The study identified the major anchovy species in Lawas and Labuan waters, which were E. devisi and E.punctifer. The FiSAT II program was used to calculate the length-weight relationship. E. devisi has a TL of 3.7 cm – 7.2 cm and E.punctifer has a TL of 0.7 cm – 8.9 cm. For E. devisi, the length-weight associations were W = 0.08839L2.7633 , r2 = 0.7014, and for E.punctifer, W = 0.04431L1.9059 , r2 = 0.5490. The asymptotic length (L) was calculated to be 7.67 cm, the growth coefficient (K) to be 0.650 yr-1, total mortality (Z) to be 2.87 yr-1, and natural mortality to be 2.87 yr-1 (M). The information obtained was important as a guideline for the management to establish a fishing regulation for a sustainable fishery in the waters of Lawas and Labuan.

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