Latitudinal variation in body size in Fejervarya limnocharis supports the inverse of Bergmann's rule
Latitudinal variation in body size in Fejervarya limnocharis supports the inverse of Bergmann's rule
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Fejervarya limnocharis 体型的纬度变化支持了伯格曼规则的逆命题
DOI：
10.1163/15707563-17000129
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发表时间：
2018-01-01
期刊：
影响因子：
1.2
通讯作者：
Liao, Wen Bo
中科院分区：
文献类型：
--
作者：
Liu, Qiao;Feng, Hao;Liao, Wen Bo
伯格曼法则指出，在一个恒温动物物种中，较小的个体在温暖的条件下被发现，这对几乎所有的恒温动物都是一致的，而在外温动物中，身体大小模式则不太一致。两栖动物作为变温脊椎动物，其形态可能受到气候条件的影响。在这里，我们研究了蛙类蛙，Fejervarya limnocharis，身体大小的纬度变化，根据文献和我们自己的数据，平均身体大小的3637个个体从50个种群和2873个个体的平均年龄在中国。结果表明，个体大小与环境温度呈显著正相关，与降水量无显著相关。该物种的个体大小与纬度呈负相关，这支持了Bergmann的逆规则。我们的研究结果表明，在低纬度人群中较大的身体尺寸与较长的生长季节有关，较高的环境温度。
Bergmann's rule states that within a species of endotherms smaller individuals are found in warmer conditions, which is consistent for nearly all endotherms, while in ectotherms body size patterns are less consistent. As ectothermic vertebrates, the morphology of amphibians is likely impacted by climatic conditions. Here, we examined latitudinal variation in body size in the ranid frog, Fejervarya limnocharis, based on literature and our own data on mean body size of 3637 individuals from 50 populations and average age of 2873 individuals from 40 populations in China. The results showed that body size was positively correlated with environmental temperature, but not with precipitation. Body size was negatively correlated with latitude among populations in this species, which supported the inverse of Bergmann's rule. Our findings suggest that a larger body size in low-latitude populations is associated with a longer growing season related to the higher environmental temperature.