温度和规格对扁玉螺耗氧率和排氨率的影响

王资生; 彭斌

文章摘要

温度和规格对扁玉螺耗氧率和排氨率的影响

Effects of Temperature and Body Size on Oxygen Consumption Rate and Ammonia Excretion Rate of Neverita Didyma

DOI：10.3969/j.issn.1671-5322.2003.04.015

中文关键词: 扁玉螺耗氧率排氨率温度规格

英文关键词: Neverita didyma oxygen consumption rate ammonia excretion rate temperature body size

基金项目:

作者	单位
王资生	盐城工学院，海洋工程系，江苏，盐城，224003
彭斌	盐城工学院，海洋工程系，江苏，盐城，224003

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中文摘要:

在实验生态条件下,研究了温度对不同个体大小扁玉螺耗氧率和排氨率的影响.实验结果表明,在实验温度(10～35℃)条件下,扁玉螺的个体耗氧率(R'0)[mg/个@h]和个体排氨率(R'N)[mg/个@h]与软体部干重(W)呈正相关,而耗氧率(R0)[mg/g@h]、排氨率(RN)[mg/g@h]与软体部干重呈负相关,二者之间均可用幂函数表示;扁玉螺的耗氧率和排氨率均随温度的升高而增加,但超过30℃后,耗氧率则下降,耗氧率(R0)、排氨率(RN)与温度之间呈明显的指数函数关系.不同规格扁玉螺的耗氧率和排氨率的比值(原子数O:N)在20℃时最大.方差分析表明,温度、软体部干重对扁玉螺的耗氧率和排氨率有极显著的影响(P＜P0.01).

英文摘要:

The effects of temperature on oxygen consumption rate and ammonia excretion rate of Neverita didyma were studied in laboratory. The results showed that the oxygen consumption（ R′O ）[mg/个·h]and ammonia excretion（ R′N ）[mg/个·h] of Neverita didyma increased but the oxygen consumption rate（ RO ）[mg/g·h] and ammonia excretion rate （ RN ）[mg/g·h] decreased with its increasing dry weight of soft tissue （ W ）[g]. The relationship between body weight and R′O or R′N could be described as a power function, R′O=aw b or R′N=cw d. The oxygen consumption rate and ammonia excretion rate of Neverita didyma increased with water temperature rising but the oxygen consumption rate decreased while surpassing 30℃. The relationship between water temperature and Ro or RN could be represented by Ro=r1e r2x or RN=q1e q2x. The ratio （atomicity O:N ） between RO and RN was highest at 20 ℃. ANOV showed that the RO and RN were significantly affected by water temperature and dry weight of soft tissue.

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