温度和个体大小对单齿螺耗氧率和排氨率的影响.pdfVIP

第26卷 第3期 生 态 科 学 26(3)：232-236 2oo7年6月 Ecological Science Jun． 2007 温度和个体大小对单齿螺耗氧率和排氨率的影响 朱爱意，谢佳彦，陈金海 浙江海洋学院海洋科学学院，浙江，舟山316004 【摘要】 采用静水法测定了不同温度、不同个体大小的单齿螺耗氧率和排氨率。结果表明：在 16-33℃的实验温度范 围内单齿螺的耗氧率(R0)和排氨率(RN)与软体部干重(W)都呈负相关，它们之间关系可以分别用幂函数Ro=aW-b和RN= alW 表示。16~29℃温度范围内单齿螺的耗氧率和排氨率均随温度的升高而增加，29℃时耗氧率和排氨率达到最大值， 当温度继续升高超过 29℃后，耗氧率和排氨率则随温度的升高而下降，耗氧率、排氨率与温度之间呈显著的指数函数 关系Ro=ee 和RN=cle ’：不同个体大小单齿螺的O：N比在16~20℃时较大，Q10取值范围0．56．3．74，平均值为1．64, 方差分析表明，温度、软体部干重对单齿螺的耗氧率和排氨率均有极显著的影响fPo．01)。 关键词：单齿螺；耗氧率；排氨率；温度；体重 中图分类号：Q89 文献标识码：A 文章编号：1008．8873(2007)03．232．05 Effects of temperature and body size on oxygen consumption rate and ammonia excretion rate ofMonodonta iabio ZHU Ai·-yi；XIE Jia·-yian；CHEN Jin·-hai SchoolofMarineScience＆Technology,Zh~iangOcean Univemi~Zhefiang316004．China Abstract：Effect oftemperature and body size on oxygen consumption rate and ammonia excretion rate of Monodonta labio were determined using hydrostatic method．The results showed that there were negative relationship between dry weight of soft tissue (W)and oxygen consumption rate(R0)or ammonia excretion rate(RN)of Monodonta labio at 1 6—33℃．The relationships between dry weight and Ro and between dry weigh and RN could be expressed by a power function as：Ro=aW。b and RN=alW-b1． The oxygen consumption rate and ammonia excretion rate of Monodonta labio increased with increasing water temperature and reached the maximum at 29℃．The relationships between water temperature and Ro and between dry wei and Rs could be expressed by an exponential function as：Ro=ce们and RN=c1e dl1．The highest Ro／RN(atomicity O／N)was observed at the temperature between 16—20℃．The Q10 value ranged from O．56 to 3．74,ANOVA showed that the Ro and RNwere significantly affected by water temperature and dry weight of soft tissue rPo．0D． Key words：Monodonta