Selective Breeding for High Endurance Running Increases Hindlimb Symmetry

Comparative studies provide correlational evidence of morphological adaptations for high locomotor performance, such as the classical indicators of cursoriality in mammals, long limbs and high metatarsal/femur ratios. More recently, enlarged femoral condyles have been suggested as an adaptation for ... Ausführliche Beschreibung

1. Person: Garland,, Theodore
Weitere Personen: Freeman, Patricia W. verfasserin
Quelle: in Evolution : international journal of organic evolution Vol. 59, No. 8 (2005), p. 1851-1854
Weitere Artikel
Format: Online-Artikel
Sprache: English
Veröffentlicht: 2005
Beschreibung: Online-Ressource
Schlagworte: research-article
Adaptation
Aerobic Capacity
Artificial Selection
Asymmetry
Cursoriality
Directional Selection
Experimental Evolution
Locomotion
Online Zugang: Volltext
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Anmerkung: Copyright: Copyright 2005 The Society for the Study of Evolution
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520 |a Comparative studies provide correlational evidence of morphological adaptations for high locomotor performance, such as the classical indicators of cursoriality in mammals, long limbs and high metatarsal/femur ratios. More recently, enlarged femoral condyles have been suggested as an adaptation for high endurance running in the genus Homo. Asymmetry of locomotor appendages should adversely affect locomotor abilities, but this has not been studied in a rigorous evolutionary context. We used experimental evolution to test for morphological adaptations associated with high voluntary wheel running in selectively bred lines of mice. Surprisingly, the classical indicators of cursoriality had not evolved in concert with high activity levels. Instead, high runners had larger femoral condyles and reduced directional asymmetry of hindlimb bones. We hypothesize that greater limb symmetry and larger femoral heads are general adaptations associated with sustained, high-speed locomotion. 
653 |a research-article 
653 |a Adaptation 
653 |a Aerobic Capacity 
653 |a Artificial Selection 
653 |a Asymmetry 
653 |a Cursoriality 
653 |a Directional Selection 
653 |a Experimental Evolution 
653 |a Locomotion 
700 1 |a Freeman, Patricia W.  |e verfasserin  |4 aut 
773 0 8 |i in  |t Evolution : international journal of organic evolution  |d Oxford : Wiley-Blackwell  |g Vol. 59, No. 8 (2005), p. 1851-1854  |q 59:8<1851-1854  |w (DE-601)JST032181701  |x 1558-5646 
856 4 1 |u https://www.jstor.org/stable/3449088  |3 Volltext 
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952 |d 59  |j 2005  |e 8  |h 1851-1854 

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