Reproductive biology of Venus clam Gafrarium tumidum (Roding, 1798) from Southeast coast of India

Jagadis, I and Rajagopal, S (2007) Reproductive biology of Venus clam Gafrarium tumidum (Roding, 1798) from Southeast coast of India. Aquaculture Research, 38 . pp. 1117-1122.

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Abstract

The reproductive biology of tumid venus clamGafrarium tumidum (Roding) was studied in detail from the Southeast coast of India. Sample size ranged from 10.3 to 41.3mm. Sexes are separate but not di¡erentiated externally. Annual sex ratio male:female (M:F) deviated signi¢cantly from the 1:1 ratio with females dominating. Based on ova diameter progression of gonad smear and histology, four and two maturity stages of gonads were di¡erentiated in female and male clams, respectively. Peak spawning was observed during November and a minor one in April.

Item Type:Article
Uncontrolled Keywords:Reproductive biology; Venus clam; Gafrarium tumidum; Southeast coast of India; spawning; condition index; sex ratio; size at first maturity
Subjects:Fish and Fisheries > Fish biology
Molluscan Fisheries > Clam
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:5803
Deposited By:Arun Surendran
Deposited On:28 Oct 2010 14:19
Last Modified:28 Oct 2010 14:19

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