南极小红蛤生理生态学研究

A PHYSIOLOGICAL STUDY OF ANTARCTIC KIDDERIA SUBQUADRATUM

本文在实验室条件下研究了南极小红蛤的摄食、呼吸和排泄。随着小红蛤的个体大小（壳长）和干重的增加，单位个体的摄食率、耗氧率、排氨率、ＭＣＲ、Ｏ／Ｎ增大，而单位干重的耗氧率、ＭＣＲ、Ｏ／Ｎ下降。本文还利用Ｏ／Ｎ比探讨了小红蛤的代谢能源机制。

The ingestion,oxygen consumption and ammonia excretion of Kidderia subquadratum have been studied under the experimental conditions in the Great Wall Station of Antarctica during the austral summer of 1993-1994.The study of the grazing rate was conducted using chlorophyll pigment analysis of gut content. With the increasing body size and weight,the rates of grazing and oxygen consumption and ammonia excretion increased per individual. But the rates decreased per unit weight. On the average,the bivalve grazed chlorophyll 19.700 μg·ind. -1 ·d -1 and consumed oxygen 9.407 μg·ind. -1 ·d -1 and produced ammonia 0.489 μg·ind. -1 ·d -1 . The O/N ratio was between 9.8～16.3,which indicated the protein was the main metabolic substrate used by K.subquadratrum.