摘要
爬行类动物在升温和降温时不同的心率变化(心率滞后)是其进行生理性体温调节的重要机制。在与爬行类系统进化关系较远的甲壳类动物脊尾白虾Exopalaemon carinicauda的研究中发现,在升温和降温时也出现心率滞后现象,这对温度敏感的甲壳类动物的体温调节十分有利,同时对其体温调节的可能生理机制进行了讨论。
Different heart rates during heating and cooling （ heart rate ＇ hysteresis＇） are an important thermoregulatory mechanism in reptiles. This phenomenon occurs in a lineage of crustaceans with vascularised circulatory systems, which is phylogenetically distant from reptiles. We measured the heart rate in response to convective heat transfer in the crustacean Exopalaemon carinicattda. The heart rate during convective heating （ from 20 to 30°G ） was significantly faster than during cooling for any given body temperature. The heart rate declined rapidly immediately following the removal of the heat source, despite only negligible losses in body temperature. This presumed to confer thermoregulatory benefits particularly given the thermal sensitivity of many physiological rate functions in crustaceans.
出处
《四川动物》
CSCD
北大核心
2009年第4期558-560,564,共4页
Sichuan Journal of Zoology
基金
国家自然科学基金(30660038)
温州医学院人才启动项目(QIJ06005)
关键词
体温
心率
体温调节
循环系统
脊尾白虾
body temperature
heart rate
thermoregulation
circulatory system
Exopalaemon carinicauda
