Reproductive studies on the short neck clam Paphia malabarica (Chemnitz) from Dharmadom Estuary, Kerala, India

Thomas, Sujitha (2013) Reproductive studies on the short neck clam Paphia malabarica (Chemnitz) from Dharmadom Estuary, Kerala, India. Indian Journal of Fisheries, 60 (4). pp. 47-50.

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Abstract

Maturation and spawning of the short neck clam Paphia malabarica was studied from Dharmadom Estuary, in northern Kerala, India. The breeding season was from October to February, with peak spawning in November and December. Sexual activity commenced from March onwards and lasted till September. The peak somatic period was from February to April when more numbers of indeterminates appeared in the population. There was not much difference in the size at maturity (Lm) for females and males; Lm was estimated to be 20 mm for females and 22 mm for males. Chi-square test indicated that the sex ratio differed significantly (p<0.01) from the theoretical 1:1 ratio, only in the month of May. The abundance of mature clams showed positive correlation with salinity and negative correlation with temperature.

Item Type:	Article
Uncontrolled Keywords:	Estuary; Paphia malabarica; Reproduction; Size at maturity
Subjects:	Molluscan Fisheries > Clam
Divisions:	CMFRI-Mangalore
Depositing User:	Arun Surendran
Date Deposited:	03 Feb 2014 11:12
Last Modified:	09 Sep 2015 15:57
URI:	http://eprints.cmfri.org.in/id/eprint/9813

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