Structural adaptations to diverse fighting styles in sexually selected weapons
Identifieur interne : 000377 ( Main/Exploration ); précédent : 000376; suivant : 000378Structural adaptations to diverse fighting styles in sexually selected weapons
Auteurs : Erin L. Mccullough ; Bret W. Tobalske ; Douglas J. EmlenSource :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2014.
Abstract
Animal weapons are among nature’s most diverse structures. Intuitively, species have different types of weapons because they fight in different ways, yet no studies have directly tested whether weapons perform better at the animals’ own style of fighting than they do at others. We constructed biomechanical models of the horns of different rhinoceros beetle species to evaluate the functional performance of horns in response to both species-typical and species-atypical fighting loads. We found that horns are both stronger and stiffer in response to species-typical fighting loads, which suggests selection for improved performance under different fighting styles played an important role in the diversification of weapon form.
Url:
DOI: 10.1073/pnas.1409585111
PubMed: 25201949
PubMed Central: 4209975
Affiliations:
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Le document en format XML
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