Some aspects of biology and biochemistry of the backwater clam, Meretrix casta (Chemnitz)

L. Krishnakumari, M.D. Rajagopal, Sumitra-Vijayaraghavan


Studies on the changes in the biochemical constituents and energy values of the backwater clam Meretrix casta have been carried out in relation to some aspects of its biology. Despite the sexual differences, there seems to be no significant difference in the biochemical constituents. Mean values of calories and lipids irrespective of sex were 4.1 kcal/g ash-free dry weight and 10.51% respectively. The percentage edibility was found to vary between 11.26 and 12.08, whereas, the condition index ranged from 2.8 to 3.56%. Compared with premonsoon and postmonsoon the values of calories and protein were found to be higher during monsoon. Suitable periods for harvesting these clams and culture possibilities have been indicated


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