Morphological adaptations linked to flight efficiency and aerial lifestyle determine natal dispersal distance in birds

被引:37
作者
Weeks, Brian C. [1 ]
O'Brien, Bruce K. [1 ]
Chu, Jonathan J. [2 ,3 ]
Claramunt, Santiago [2 ,3 ]
Sheard, Catherine [4 ]
Tobias, Joseph A. [5 ]
机构
[1] Univ Michigan, Sch Environm & Sustainabil, Ann Arbor, MI 48109 USA
[2] Royal Ontario Museum, Dept Nat Hist, Toronto, ON, Canada
[3] Univ Toronto, Dept Ecol & Evolutionary Biol, Toronto, ON, Canada
[4] Univ Bristol, Sch Earth Sci, Bristol, Avon, England
[5] Imperial Coll London, Dept Life Sci, Ascot, Berks, England
基金
加拿大自然科学与工程研究理事会;
关键词
bird traits; dispersal; functional traits; morphology; natal dispersal; BREEDING DISPERSAL; CLIMATE-CHANGE; DIVERSITY; EVOLUTION; DIVERSIFICATION; IMPACTS; ABILITY;
D O I
10.1111/1365-2435.14056
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Natal dispersal-the movement from birthplace to breeding location-is often considered the most significant dispersal event in an animal's lifetime. Natal dispersal distances may be shaped by a variety of intrinsic and extrinsic factors, and remain poorly quantified in most groups, highlighting the need for indices that capture variation in dispersal among species. In birds, it is hypothesized that dispersal distance can be predicted by flight efficiency, which can be estimated using wing morphology. However, the use of morphological indices to predict dispersal remains contentious and the mechanistic links between flight efficiency and natal dispersal are unclear. Here, we use phylogenetic comparative models to test whether hand-wing index (HWI, a morphological proxy for wing aspect ratio) predicts natal dispersal distance across a global sample of 114 bird species. In addition, we assess whether HWI is correlated with flight usage in foraging and daily routines. We find that HWI is a strong predictor of both natal dispersal distance and a more aerial lifestyle. Our results support the use of HWI as a valid proxy for relative natal dispersal distance, and also suggest that evolutionary adaptation to aerial lifestyles is a major factor connecting flight efficiency with patterns of natal dispersal. Read the free Plain Language Summary for this article on the Journal blog.
引用
收藏
页码:1681 / 1689
页数:9
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