摘要
本试验研究了在饱食状态下各种大小的河蚬在不同温度下的耗氧率和排氨率及其昼夜变化的特征。结果表明，温度和河蚬的个体大小均对其耗氧率和排氨率有显著影响。其中，河蚬耗氧率与其体重之间呈幂函数关系，排氨率与其体重之间呈指数函数关系；而温度对河蚬耗氧率和排氨率的影响，则表现为，在一定的温度范围内，河蚬的耗氧率和排氨率，随温度的升高而增加，超过某一温度，则随温度的升高而降低。还发现，河蚬的耗氧率存在着明显昼夜变化规律，白天的耗氧率明显高于晚间耗氧率；而其排氨率的昼夜变化节律不明显。
Oxygen consumption rate (OCR) and amrnonla excretory rate (AER) of different size, well fed fresh water clam, Corbicula fluminea, under various water temperature are measured in this paper. The resUlts indicate that both the water temperature and size of the clam have significant effects on OCR and AER. An exponential decrease occurs for both OCR and AER as the clam grows, while OCR and AER increase when water temperature rises within a certain range. Over the upper limit of that range (about 28℃ ), both OCR and AER decrease as water temperature continues to rise. Besides, an evident diurnal rhythm in the respiration of the clam is also found, i e, OCR of the clam is higher during the day than that at night, and there is no such diurnal rhythm AER.
出处
《上海水产大学学报》
CSCD
1999年第4期298-303,共6页
Journal of Shanghai Fisheries University
关键词
河蚬
耗氧率
排氨率
温度
昼夜变化
Corbicula fluminea, oxygen consumption rate, ammonia excretory r e
