Hindlimb morphology and locomotor performance in waders: an evolutionary approach

被引:13
作者
Barbosa, A [1 ]
Moreno, E [1 ]
机构
[1] CSIC, Museo Nacl Ciencias Nat, Dpt Ecol Evolutiva, E-28006 Madrid, Spain
关键词
ecomorphology; evolution; locomotion performance; hindlimb; morphology; osteology; myology; waders;
D O I
10.1006/bijl.1998.0282
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Locomotion performance (measured as stride frequency and stride length) was studied in 16 species of waders. Differences in hindlimb morphology (osteology? and myology) were analysed among species. Evolutionary changes in both locomotion and morphological variables were analysed using comparative methods revealing the existence of some ecomorphological patterns relating these two sets of characters. Evolutionary changes in stride frequency were correlated with changes in the muscles M. iliotibialis cranialis, M. iliotibiales lateralis and hi, gastrocnemius, whereas changes in stride length showed correlated evolution with changes in the length of distal segments of the leg. We identify two different evolutionary strategies in locomotion of waders. One is a change in distal leg segments (skeletal system), an adaptive modification that increases stride length; the second is a change in the skeletal-muscular system, providing an increase in muscular performance (force or speed of contraction) in several muscles, and is an adaptation that increases stride frequency. (C) 1999 The Linnean Society of London.
引用
收藏
页码:313 / 330
页数:18
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