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Journal of the Marine Biological Association of India
Indescriminate destruction of juveniles of spiny cheek grouper Epinephelus diacanthus (Valenciennes) off Quilon. Kerala
An incidence of juvenile capture of Epirleplrelus diacantlrus (Val.) (Family: Serranidae) off Quilon, South west Coast of India is reported. They formed 65% of the discards landed on 13-10-2005 with an estimated catch of 2,610kg. The juveniles were in the size range of 88-140mm (mean size = 110 mm) with the modes at 106-110mm and at 116-120mm. They fed on crabs (Charybdis sp.), mysids, Acetes sp., and alima larvae of Squilla. Length-weight relationship of these small fishes was worked out as Log W = - 5.421865 +3.26 Log L (r =0.9193). It is estimated that the juveniles with an average calculated weight of 17.2g, if allowed to grow would have yielded a biomass of 76t with each individual attaining a total weight of 504g at the end of first year. Necessary management measures such as establishing Marine Protected Areas (MPAs) are necessary for protecting their nursery/spawning grounds.
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