Latitude, elevation and body mass variation in Andean passerine birds
Latitude, elevation and body mass variation in Andean passerine birds
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DOI：
10.1046/j.1466-822x.2001.00237.x
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发表时间：
2001-05-01
影响因子：
6.4
通讯作者：
Ruggiero, A
中科院分区：
文献类型：
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作者：
Blackburn, TM;Ruggiero, A
在安第斯雀形目鸟类群中，研究了它们的体重与纬度、体重与海拔的关系2 .各物种的体质量与海拔分布中点呈显著正相关，而与纬度分布中点的关系不显著将其分为安第斯特有种和非特有种，前者的体重与海拔高度呈显著正相关，后者的体重与纬度呈显著正相关（“Bergmann规则”）。利用多元回归控制海拔高度后，安第斯特有物种表现出伯格曼规律这些关系并不是物种在系统发育上不独立的结果。所有这些影响都非常微弱，纬度和海拔只能解释体重变化的百分之几。当系统发育控制分析仅在属内进行时，关系是最强的讨论了这些结果对机械理解伯格曼规则的意义。
1 Relationships between body mass and latitude, and body mass and elevation are examined in the assemblage of Andean passerine birds.2 Across species, body mass is positively correlated with the mid-point of the species elevational distribution, but there is no significant relationship between body mass and latitudinal range mid-point.3 When the assemblage is separated into Andean endemic and non-endemic species, the former group shows a significant positive relationship between body mass and elevation, and the latter a significant positive relationship between body mass and latitude ('Bergmann's rule'). Andean endemic species exhibit Bergmann's rule once elevation is controlled for using multiple regression.4 These relationships are not a consequence of the phylogenetic non-independence of species. All the effects shown are very weak, with latitude and elevation explaining only a few per cent of the variation in body mass. Relationships are strong est when phylogenetically controlled analyses are performed just within genera.5 The implications of these results for the mechanistic understanding of Bergmann's rule are discussed.