Growth and seasonal changes in biochemical composition in black clam Villorita cyprinoides (Grey)

Y. Modassir

Abstract



Seasonal changes in growth and biochemical composition of backwaters clam, Villorita cyprinoides was studied. Mean monthly shell length showed that the relative and specific growth decreased with increasing length. The growth in younger specimens was higher than the older ones. The clam breeds twice a year. Body composition and biochemical constituents showed seasonal variation with two maxima and two minima. The high calorific values were associated with the development of the gonads and low values observed during the breeding season. Water content of the body showed a reciprocal relationship with the biochemical composition. Fluctuations in body constituents were related to adverse conditions affecting the nutrition of the animal

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