栉孔扇贝耗氧率和排氨率的研究

1999年 4～ 6月 ,采用室内实验生态学方法对栉孔扇贝的耗氧率和排氨率进行了研究 .结果表明 ,在适宜的温度范围内 ,栉孔扇贝的耗氧率和排氨率均与温度成正比 ,而与体重呈负相关关系 .在实验室温度 (8～ 2 8℃ )条件下 ,栉孔扇贝的耗氧率为 0 .48～ 9.0 9mg·g-1·h-1,排氨率为 0 .0 5～ 1 0 1mg·g-1·h-1.其中耗氧率在 2 3℃时达到最高值 ,2 8℃时开始下降 ,而排氨率则呈持续升高趋势 .栉孔扇贝的日常代谢明显高于标准代谢 ,耗氧率和排氨率平均值分别提高约 35 .8%和 75 .9% .

Oxygen consumption and ammonia-N excretion rates of Chlamys farreri

The oxygen consumption and ammonia-N excretion rates of Chlamys farreri were studied from April to June, 1999. The results showed that the oxygen consumption and ammonia-N excretion rates of Chlamys farreri were positively correlated with water temperature, and negatively correlated with its body weight under appropriate temperature conditions. Under the test temperature (8-28 degrees C), the oxygen consumption rate ranged from 0.48 to 9.09 mg.g-1.h-1, and the ammonia-N excretion rate ranged from 0.05 to 1.01 mg.g-1.h-1. With the raising water temperature, the oxygen consumption rate reached peak value at 23 degrees C, and began to decrease at 28 degrees C. The ammonia-N excretion rate continuously increased from 8 to 28 degrees C. The routine metabolism of Chlamys farreri under treatment was obvious higher than the standard metabolism, and the oxygen consumption and ammonia-N excretion rates increased by 35.8% and 75.9%, respectively.