Bergmann's rule does not apply to geometrid moths along an elevational gradient in an Andean montane rain forest
Bergmann's rule does not apply to geometrid moths along an elevational gradient in an Andean montane rain forest
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DOI：
10.1111/j.1466-882x.2004.00069.x
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发表时间：
2004-01-01
影响因子：
6.4
通讯作者：
Fiedler, K
中科院分区：
文献类型：
--
作者：
Brehm, G;Fiedler, K
目标伯格曼规则通常预测气候较冷时动物的体型会更大。我们检验了伯格曼法则在种间水平上是否适用于蛾类（鳞翅目：地理蛾科）沿着一个扩展的海拔梯度在厄瓜多尔安第斯山脉。位置蛾采样在22个地点在省萨莫拉-方法对厄瓜多尔南部海拔1040 ~ 2677 m森林生境中的953种2282只尺蠖雄蛾的翅幅进行了测量，结果尺蠖蛾平均翼展与海拔高度呈负相关（r =-0.59，P < 0.005），不支持Bergmann法则。Geometridae的体型和海拔之间的关系似乎是假的，因为Larentiinae亚科的物种明显小于Ennominae亚科的物种，同时它们的比例沿着梯度增加。一个显着的减少翼展也被发现在ennomine部落Ourapterygini，但没有一致的身体大小模式被发现在其他六个类群的研究。在大多数类群中，身体大小的变化随海拔高度的增加，这表明，制约身体大小的因素可能是较弱的高elevation.Main结论的结果是按照以前的研究，不能检测一致的身体大小模式在昆虫种间水平沿着气候梯度。
Aim Bergmann's rule generally predicts larger animal body sizes with colder climates. We tested whether Bergmann's rule at the interspecific level applies to moths (Lepidoptera: Geometridae) along an extended elevational gradient in the Ecuadorian Andes.Location Moths were sampled at 22 sites in the province Zamora-Chinchipe in southern Ecuador in forest habitats ranging from 1040 m to 2677 m above sea level.Methods Wingspans of 2282 male geometrid moths representing 953 species were measured and analysed at the level of the family Geometridae, as well as for the subfamily Ennominae with the tribes Boarmiini and Ourapterygini, and the subfamily Larentiinae with the genera Eois, Eupithecia and Psaliodes.Results Bergmann's rule was not supported since the average wingspan of geometrid moths was negatively correlated with altitude (r = -0.59, P < 0.005). The relationship between body size and altitude in Geometridae appears to be spurious because species of the subfamily Larentiinae are significantly smaller than species of the subfamily Ennominae and simultaneously increase in their proportion along the gradient. A significant decrease of wingspan was also found in the ennomine tribe Ourapterygini, but no consistent body size patterns were found in the other six taxa studied. In most taxa, body size variation increases with altitude, suggesting that factors acting to constrain body size might be weaker at high elevations.Main conclusions The results are in accordance with previous studies that could not detect consistent body size patterns in insects at the interspecific level along climatic gradients.