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首页> 外文期刊>Journal of Thermal Biology >Does thermoregulatory behaviour of green toads (Bufo viridis) constrain geographical range in the west? A comparison with the performance of syntopic natterjacks (Bufo calamita)
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Does thermoregulatory behaviour of green toads (Bufo viridis) constrain geographical range in the west? A comparison with the performance of syntopic natterjacks (Bufo calamita)

机译：绿蟾蜍（Bufo viridis）的体温调节行为是否会限制西部的地理范围？与对讲机（Bufo calamita）的性能比较

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(1) Behavioural regulation of body temperature (t(b)) was monitored in 23 free-ranging Bufo calamita (Bc) and 17 syntopic Bufo viridis (Bv) at Urmitz (Rhineland-Palatinate, Germany) using temperature-sensitive transmitters implanted to the abdominal cavity.(2) In field tb varied between +0.5 and 37.4 degrees C in Bc and between +0.6 and 33.7 degrees C in By. Maximum tb of a Bc measured during an experimental trial was 38.8 degrees C.(3) Natterjack toads avoided environmental temperature extremes by burrowing actively into moist sandy soil (2-90 cm deep), whereas green toads hid exclusively in mammal burrows or pre-existing subterranean cavities. Shelter choice did not vary between summer and winter.(4) Average tb of Bc exceeded significantly that of By during summer (26.7 degrees C vs. 24.7 degrees C), while the reverse was true during winter (4.2 vs. 7.2 degrees C). Following hibernation the body condition of By was significantly lower than that of Bc.(5) We conclude that green toads fail to colonise regions west of the Rhine valley because of a combination of winter temperatures impeding foraging trips for prolonged periods, the choice of warm hibernacula increasing metabolic costs and/or predation risk and reduced fecundity
机译：（1）在Urmitz（德国莱茵兰-普法尔茨州）的23个自由放养的Bufo calamita（Bc）和17个同位Bufo viridis（Bv）中，使用植入式传感器的温度敏感变送器监测了体温的行为调节（t（b）） （2）在视野tb中，Bc的温度在+0.5至37.4摄氏度之间，在By区域的+0.6至33.7摄氏度之间变化。在实验试验中测得的Bc的最大tb为38.8摄氏度。（3）Natterjack蟾蜍主动向潮湿的沙土（2-90厘米深）挖洞，​​从而避免了极端的环境温度，而绿色蟾蜍则专门藏在哺乳动物的洞穴中或现有的地下洞。夏季和冬季，庇护所的选择没有变化。（4）夏季（26.7℃vs. 24.7℃），Bc的平均tb明显超过By的平均值，而冬季（4.2 vs. 7.2℃）则相反。 。冬眠后，By的身体状况显着低于Bc。（5）我们得出结论，由于冬季温度的高低阻碍了长时间的觅食旅行，青蟾蜍无法在莱茵河谷以西的地区定居，温暖的选择冬虫夏草增加了代谢成本和/或捕食风险并降低了繁殖力

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