Seasonal gonadal changes, spawning and condition index of oyster Crassostrea madrasensis (Preston) in the Korampallam creek, Tuticorin

Palaniswami, Rani (1993) Seasonal gonadal changes, spawning and condition index of oyster Crassostrea madrasensis (Preston) in the Korampallam creek, Tuticorin. Indian Journal of Fisheries, 40 (4). pp. 242-246.

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Abstract

Seanod changca in the gonad of edible oyrter Crassosma madmsensis were oberved hir- tologically in samples colleated &om Korampallam creek during February 1987 to January 1988. Two peak spawning reasons wore observed in March and September. Gametogenerir atarted in May 1987 and ripe atagea wore noticed from September 1987. Spawning occurred during Sep- tember to Ootober. A second cycle of gametogenerir began during November 1987 and higher percentage of ripe rtages were noticed during March 1987 and spawning commenced in early March. Oyaten showed 5.60% of apent stage8 with reridual eggs throughout the year except August, September. December and February. Oyden panred through indoterminate atage before the advance of gametogenesis. No hermaphrodites were observed during thin period.

Item Type:Article
Uncontrolled Keywords:oyster; Crassostrea madrasensis; Tuticorin
Subjects:Molluscan Fisheries > Edible oyster
Divisions:CMFRI-Tuticorin
ID Code:495
Deposited By:Edwin Joseph
Deposited On:10 May 2010 18:23
Last Modified:25 May 2012 14:22

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