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Dynamic evolution of locomotor performance independent of changes in extended phenotype use in spiders.
Kelly, Michael B J; Khan, Md Kawsar; Wierucka, Kaja; Jones, Braxton R; Shofner, Ryan; Derkarabetian, Shahan; Wolff, Jonas O.
Afiliação
  • Kelly MBJ; Evolutionary Biomechanics, Zoological Institute and Museum, University of Greifswald, Loitzer Strasse 26, 17489 Greifswald, Germany.
  • Khan MK; School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia.
  • Wierucka K; School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia.
  • Jones BR; Institute of Biology, Freie Universität Berlin, Königin-Luise-Straße 1-3, 14195 Berlin, Germany.
  • Shofner R; School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia.
  • Derkarabetian S; Behavioural Ecology and Sociobiology Unit, German Primate Center - Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany.
  • Wolff JO; School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia.
Proc Biol Sci ; 290(2009): 20232035, 2023 10 25.
Article em En | MEDLINE | ID: mdl-37876190
Many animals use self-built structures (extended phenotypes) to enhance body functions, such as thermoregulation, prey capture or defence. Yet, it is unclear whether the evolution of animal constructions supplements or substitutes body functions-with disparate feedbacks on trait evolution. Here, using brown spiders (Araneae: marronoid clade), we explored if the evolutionary loss and gain of silken webs as extended prey capture devices correlates with alterations in traits known to play an important role in predatory strikes-locomotor performance (sprint speed) and leg spination (expression of capture spines on front legs). We found that in this group high locomotor performance, with running speeds of over 100 body lengths per second, evolved repeatedly-both in web-building and cursorial spiders. There was no correlation with running speed, and leg spination only poorly correlated, relative to the use of extended phenotypes, indicating that web use does not reduce selective pressures on body functions involved in prey capture and defence per se. Consequently, extended prey capture devices serve as supplements rather than substitutions to body traits and may only be beneficial in conjunction with certain life-history traits, possibly explaining the rare evolution and repeated loss of trapping strategies in predatory animals.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Corrida / Aranhas Limite: Animals Idioma: En Revista: Proc Biol Sci Assunto da revista: BIOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Corrida / Aranhas Limite: Animals Idioma: En Revista: Proc Biol Sci Assunto da revista: BIOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Alemanha