The Thermal Dependence of Locomotion, Tongue Flicking, Digestion, and Oxygen Consumption in the Wandering Garter Snake
The Thermal Dependence of Locomotion, Tongue Flicking, Digestion, and Oxygen Consumption in the Wandering Garter Snake
复制标题
游走袜带蛇运动、舌头弹动、消化和耗氧量的热依赖性
DOI：
10.1086/physzool.58.1.30161219
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
Joyce S. Tsuji
中科院分区：
文献类型：
--
作者：
R. Stevenson;C. Peterson;Joyce S. Tsuji
束带蛇(Thamnophim Elegans)的体温在一天中(例如4-33摄氏度)可能会有很大的变化，需要关于TB如何影响生理和行为过程的信息，以评估这种变化的重要性。我们测量了在华盛顿东部采集的蛇的爬行速度、游泳速度、舌动速度、消化率和在5-35℃温度下的耗氧量，这些蛇适应了9月的野外光周期和温度循环。所有功能都强烈依赖于结核病。爬行(X̄=0.74m S−1)的最大速度出现在Tb=34.5C，游泳(X̄=0.69m S−1)出现在Tb=28.5时。在摄氏30度时，蛇的爬行速度比它们游泳的速度慢，但在结核病较高的情况下，情况正好相反。在Tb=30℃时，蛇的舌头以最大22赫兹的速度上下移动。消化速度在20℃以上急剧增加，在25-35℃的TB范围内最高可达0.45只/天。所有的蛇在10℃时都会回吐食物。5-15℃、15-25℃和25-35℃TB范围内的质量比耗氧量的Q10值分别为2.4、1.3和5.0。在所研究的表现中，游泳速度对结核病最不敏感，而消化率对结核病最敏感。FieldTb数据表明，所有功能在白天将接近最高水平，但在晚上将显着减少。我们得出的结论是，没有单一的结核最适合于捕食、躲避捕食者和节约能源的生态任务。
The body temperature (Tb) of garter snakes (Thamnophis elegans) can vary considerably in the course of a day (e.g., 4-33 C), and information on how Tb affects physiological and behavioral processes is required to evaluate the significance of that variation. We measured crawling speed, swimming speed, tongue-flicking rate, digestive rate, and oxygen consumption at Tb's of 5-35 C in snakes collected in eastern Washington and acclimated to September field photoperiod and temperature cycles. All functions were strongly dependent on Tb. The maximum speed of crawling (X̄ = 0.74 m s−1) occurred at Tb = 34.5 C; that of swimming (X̄ = 0.69 m s−1) occurred at Tb = 28.5. At < 30 C, the snakes crawled more slowly than they swam, but the reverse was true at higher Tb. At Tb = 30 C, the snakes moved their tongues up and down at a maximum rate of 22 Hz. Digestion rate increased sharply above 20 C, to a maximum of 0.45 mice/day within the Tb range of 25-35 C. All snakes regurgitated their meal at 10 C. The Q10 values for mass-specific oxygen consumption over the 5-15, 15-25, and 25-35 C Tb ranges were 2.4, 1.3, and 5.0, respectively. Among the performances studied, swimming speed was the least sensitive, and digestion rate the most sensitive, to Tb. FieldTb data indicate that all functions would be near maximum levels during the day but would be significantly reduced at night. We conclude that no single Tb is best for the ecological tasks of prey capture, predator avoidance, and energy conservation.