Sex ratio, fecundity and reproductive potential in two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) along the Karnataka coast

Sukumaran, K K and Neelakantan, B (1997) Sex ratio, fecundity and reproductive potential in two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) along the Karnataka coast. Indian Journal of Marine Sciences, 26. pp. 43-48.

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Abstract

Chi-square values for the pooled data were significant at a probability level of 0.05 indicating that there was significant variation in sex ratio in P.{P) sanguinolentus and P. (P) pelagicus. The fecundity increased with the size of the crab from 0.044 to 1.19 x 10' eggs in P.{P) sanguinolentus and from 0.056 to 1.07 x 10' eggs in P. (P) pe/agicus and the correlation coefficient values were significant at P:;O.OOI level between the parameters studied. The productivity was found to increase from a low of 0.1 in 80-90 mm to a maximum of 2.2 in 120-130 mm in the former and 130-140 mm in the latter species.

Item Type: Article
Uncontrolled Keywords: Sex ratio; fecundity; reproductive potential; marine portunid crab; Portunus sanguinolentus; Portunus pelagicus; Karnataka coast
Subjects: Crustacean Fisheries > Crabs
Divisions: CMFRI-Cochin > Marine Capture > Crustacean Fisheries
Subject Areas > CMFRI Brochures > CMFRI-Cochin > Marine Capture > Crustacean Fisheries
Depositing User: Arun Surendran
Date Deposited: 17 Jan 2011 09:42
Last Modified: 09 Sep 2015 15:41
URI: http://eprints.cmfri.org.in/id/eprint/7011

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