MBAI - The Marine Biological Association of India

Induced triploidy in the edible oyster, Crassostrea madrasensis by temperature shock

Volume 48 Issue 2

Jyothi V.Mallia, P.C.Thomas and.P.Muthiah

Abstract

Heat and cold shock were applied for triploid induction in the edible oyster Crassostrea madrasensis. Triploidy was confirmed by metaphase-spread preparation. The highest triploid induction by cold shock (5°C: 10 min) was 42.2% at larval stage and 33.3% at 'D' stage. With heat shock at 35°C (5 min) triploid percentage was 42% during larval stage and 39.1% at 'D' stage.

Date : 30-12-2006

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