Journal of the Marine Biological Association of India

Volume 45 Issue 2

Effect of temperature on polar body formation in the edible oyster,Crassostrea madrasensis

Jyothi V. Mallia and P. C. Thomas

Freshly fertilized eggs of edible oyster Crassostrea madrasensis were maintained at temperatures of 23,29 and 31°C and the biological developments were viewed under a light microscope to monitor the kinetics of polar body extrusion at these temperatures. Time of release of fifty percent of polar bodies at 23"C, 28°C and 31°C were 18,16 and 15 minutes post fertilization respectively, indicating the temperature dependence of this event.


Date : 30-12-2003