Population dynamics of Nemipterus japonicus (block) In the trawling grounds off Madras

Vivekanandan, E and James, D B (1986) Population dynamics of Nemipterus japonicus (block) In the trawling grounds off Madras. Indian Journal of Fisheries, 33 (2). pp. 145-154.

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Abstract

Nemipterus japonicus matures at 145 mm total length and has an extended spawning season from June to March with maximum spawning activity in December- March. The length-weight relationship of fish can be expressed as: log W = —4.8665 + 2.9661 log L. The von Bertalanfly parameters of growth are estimated thus: K = 1.004; t„ = 0.2257; Leo = 305 mm. The natural mortality and fishing mortality rates are estimated at 2.5254 and 0.4599, respectively. Both the annual stock (2300 t) and the standing crop (731 t) are higher than the estimated annual catch (336 t), indicating that the present fishing effort can safely be increased without the stock being affected.

Item Type: Article
Uncontrolled Keywords: Population dynamics; Nemipterus japonicus; Madras
Subjects: Marine Fisheries > Population Dynamics
Divisions: CMFRI-Cochin > Marine Capture > Demersal Fisheries
Subject Areas > CMFRI Brochures > CMFRI-Cochin > Marine Capture > Demersal Fisheries
Depositing User: Dr. V Mohan
Date Deposited: 09 Apr 2010 10:49
Last Modified: 09 Sep 2015 15:06
URI: http://eprints.cmfri.org.in/id/eprint/378

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