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首页> 外文期刊>Journal of Molluscan Studies >Respiration Rates in Bithynia Tentaculata (L.) (Gastropoda:Bithyniidae) in Response to Acclimation Temperature and AcuteTemperature Change
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Respiration Rates in Bithynia Tentaculata (L.) (Gastropoda:Bithyniidae) in Response to Acclimation Temperature and AcuteTemperature Change

机译：百日草（L.）（天麻：Bithyniidae）的呼吸速率对适应温度和急性温度变化的响应

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摘要

The aerobic metabolic rate of the freshwater prosobranch Bithynia tentaculata (L.) was measured as the rate of oxygen consumption by groups of snails acclimated to temperatures of 12 degree C, 18 degree C and 24 degree C. Responses to acute temperature alteration were also monitored. The results revealed that metabolic rate is essentially independent of ambient temperature: no differences were found among the respiration rates of the three differently acclimated groups. Metabolic effects of acutely elevated temperature were usually compensated in a highly efficient manner, resulting in low Q sub(10) values between 1.08 and 2.24. However, the 12 degree C-acclimated snails remained inactive at temperatures above 18 degree C, which is a typical stress response in B. Tentaculata. The same behaviour occurred in 24 degree C-acclimated snails at experimental temperatures below 24 degree C. In both cases no active respiration rates could be determined. When the 18 degree C-acclimated group was exposed to an experimental temperature of 12 degree C, their oxygen consumption rate declined with a Q sub(10) of 5.53. In relation to previous findings on life-cycle strategy, as well as nutritional and reproductive physiology in B. Tentaculata, the present results are discussed in the context of a seasonally controlled metabolism, reflecting the seasonally varying physiological needs of this species.
机译：以适应温度分别为12°C，18°C和24°C的蜗牛组的耗氧率来测量淡水前分支Bithynia tentaculata（L.）的有氧代谢率。还监测了对急性温度变化的响应。结果表明，代谢速率基本上与环境温度无关：三个不同适应组的呼吸速率之间未发现差异。急性升高温度的代谢效应通常以高效的方式进行补偿，从而导致Q sub（10）值在1.08至2.24之间较低。但是，适应温度为12摄氏度的蜗牛在高于18摄氏度的温度下仍保持不活动状态，这是B. Tentaculata中典型的应力响应。在低于24摄氏度的实验温度下，在适应24摄氏度的蜗牛中也发生了相同的行为。在这两种情况下，都无法确定主动呼吸频率。当适应18°C的组暴露于12°C的实验温度时，其氧气消耗率下降，Q sub（10）为5.53。关于先前的生命周期策略研究，以及五味子藻的营养和生殖生理学，目前的结果是在季节性控制的新陈代谢的背景下讨论的，反映了该物种季节性变化的生理需要。

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