ACTIVITY AND THERMOREGULATION OF THE GOPHER TORTOISE (GOPHERUS POLYPHEMUS) IN
ACTIVITY AND THERMOREGULATION OF THE GOPHER TORTOISE (GOPHERUS POLYPHEMUS) IN
复制标题
地鼠龟 (GOPHERUS POLYPHEMUS) 的活动和体温调节
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
J. Layne
中科院分区：
文献类型：
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作者：
Southern Florida;J. Douglass;J. Layne
报道了一项对佛罗里达州南部多头沙鼠种群活动和体温调节的为期8年的研究结果。一年中每个月都会有一些活动发生，5-8月是活动的高峰期，但洞穴外的活动只在冬季温暖的日子发生。昼夜活动周期全年都是单峰的，高峰出现在一天中最热的部分(1300-1600小时)。在一年中的大部分时间里，雄性比雌性更频繁地被捕获，并且在一天中的早些时候和晚些时候都很活跃。夏季洞穴内的气温记录为25.8-27.20摄氏度，活跃动物的平均体温为34.70摄氏度。寻找阴凉处、口腔起泡和呼吸急促与高温应激有关。晒太阳在自然界中很常见。充足的遮荫和水源，以及深洞的使用，使该地区的多头海龟在最高温度和最低相对湿度的时候活跃起来。在体温调节机制上，多头海鞘的体温调节机制与迄今为止所研究的该属其他成员相似，这表明活动模式和洞穴使用的差异，而不是独特的生理适应，是允许这些动物在不同环境中进行有效体温调节的主要机制。
Results of an 8-yr study of activity and thermoregulation in a southern Florida population of Gopherus polyphemus are reported. Some activity occurs in every month of the year, with a peak in May-August, but activity outside of burrows occurs only on warmer days during winter. The diel activity cycle is unimodal throughout the year, with peaks occurring during the hottest parts of the day (1300-1600 h). Males are captured more frequently than females during most of the year, and are active both earlier and later in the day. Air temperatures recorded inside burrows during summer were 25.8-27.20C, and body temperatures of active animals averaged 34.70C. Shade-seeking, frothing at the mouth, and rapid breathing are associated with high temperature stress. Basking occurs commonly in nature. The availability of abundant shade and water and the use of deep burrows permit G. polyphemus at this locality to be active during times of maximum temperature and minimum relative humidity. In its thermoregulatory mechanisms, G. polyphemus is generallv similar to other members of the genus studied thus far, suggesting that differences in activity patterns and burrow use, rather than distinctive physiological adaptations, are the principal mechanisms allowing effective thermoregulation in the diverse environments inhabited by these animals.