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Auteur (up) Anderson, P.S.L.; Claverie, T.; Patek, S.N. url  doi
  Titre Levers And Linkages: Mechanical Trade-Offs In A Power-Amplified System Type Article scientifique
  Année 2014 Publication Revue Abrégée Evolution  
  Volume 68 Numéro 7 Pages 1919-1933  
  Mots-Clés amplification; Biomechanics; comparative methods; evolution; kinematic transmission; labrid fishes; mantis shrimp; modularity; morphology; phylogenetic; stomatopods; strike; trade-offs  
  Résumé Mechanical redundancy within a biomechanical system (e. g., many-to-one mapping) allows morphologically divergent organisms to maintain equivalent mechanical outputs. However, most organisms depend on the integration of more than one biomechanical system. Here, we test whether coupled mechanical systems follow a pattern of amplification (mechanical changes are congruent and evolve toward the same functional extreme) or independence (mechanisms evolve independently). We examined the correlated evolution and evolutionary pathways of the coupled four-bar linkage and lever systems in mantis shrimp (Stomatopoda) ultrafast raptorial appendages. We examined models of character evolution in the framework of two divergent groups of stomatopods-“smashers” (hammer-shaped appendages) and “spearers” (bladed appendages). Smashers tended to evolve toward force amplification, whereas spearers evolved toward displacement amplification. These findings show that coupled biomechanical systems can evolve synergistically, thereby resulting in functional amplification rather than mechanical redundancy.  
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0014-3820 ISBN Médium  
  Région Expédition Conférence  
  Notes <p>ISI Document Delivery No.: AL3TK<br/>Times Cited: 1<br/>Cited Reference Count: 40<br/>Anderson, Philip S. L. Claverie, Thomas Patek, S. N.<br/>National Science Foundation [IOS-1149748]<br/>The authors would like to thank S. Price for extensive assistance on phylogenetic comparative methods and L. Revell for help and advice for using his Phytools package for R. We would also like to thank M. Porter, M. Rosario, P. Green, S. Cox, and K. Kagaya for helpful discussions on stomatopod biology as well as two anonymous reviewers for their insightful comments, which have greatly improved the quality of this article. We also thank K. Reed (National Museum of Natural History, Washington, DC) and S. Keable (Australian Museum of Natural History, Sydney) for access to their specimen collections. This work was funded by the National Science Foundation (IOS-1149748) to SNP. The authors declare no conflict of interest.<br/>Wiley-blackwell<br/>Hoboken</p> Approuvé pas de  
  Numéro d'Appel MARBEC @ alain.herve @ collection 1156  
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