Studies on some aspects of biology and fishery of the cockle, Anadara granosa (Linnaeus), from Kakinada bay

Narasimham, K A (1969) Studies on some aspects of biology and fishery of the cockle, Anadara granosa (Linnaeus), from Kakinada bay. In: Proceedings of the Symposium on Mollusca ; MBAI, 12-16 January 1968, Cochin.

[img]
Preview
PDF
436Kb

Abstract

Age and growth of A,granosa has been studied by an examination of the size-frequencies of random samples for the period from April 1965 to September 1966. The cockles measure 31 -5 mm. in length at the end of the first year and 49.3 mm. at the end of the second year of life. No growth rings were noticed to be of use in age determination. The commercial catches chiefly consisted of '0' and 1 + age groups in the year April 1965 to March 1966. The cockles reach sexual maturity when they measure 21 mm. and about 7 months old. They appear to breed throughout the year. There is a peak spawning activity in January- April period. The length-weight relationship has been studied.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Cockle; Anadara granosa (Linnaeus); Kakinada bay
Subjects:Molluscan Fisheries > Clam
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:2368
Deposited By:Edwin Joseph
Deposited On:17 Aug 2010 05:57
Last Modified:17 Aug 2010 05:57

Repository Staff Only: item control page