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Fishery of sand lobster Thenus orientalis (Lund) \ud along Chennai coast

By V Thangaraj Subramanian

Abstract

The sand lobster Thenus orientalis formed a minor fishery supplementing the \ud trawl catches along Chennai coast. The annual landings of the species during \ud 1982-1999 varied between 6.7 and 114.6t, with the catch trend showing gradual \ud progress leading to sharp rise in 1991-95 followed by moderate decline. Main \ud fishery season extended over September-February, with peak abundance in \ud monsoon months, October-November. Females were slightly larger among \ud population, as the mean-size was 156.9 mm, against 153.6 mm for male. The L” \ud was 298.25 mm and K, 0.2967/yr for female and 288.91 mm and 0.3216/yr for \ud males, which worked out the growth performance of 4.422 and 4.426 for the \ud respective sex. The overall sex-ratio of M:F was 46.3:53.7 and the minimum \ud size at maturity of female was 105.5 mm. The species showed two major spawning \ud spells around February-March and June-August and peak recruitments appeared \ud during January-February and May-July

Topics: Lobsters
Publisher: CMFRI
Year: 2004
OAI identifier: oai:eprints.cmfri.org.in:151

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