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Disruptive sexual selection on male body size in the polyphenic black scavenger fly Sepsis thoracica

Busso, Juan Pablo ; Blanckenhorn, Wolf U.

In: Behavioral Ecology, 2018, vol. 29, no. 3, p. 769-777

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    Titre
    • Disruptive sexual selection on male body size in the polyphenic black scavenger fly Sepsis thoracica
    Auteur
    • Busso, Juan Pablo. Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse, CH, Zürich, Switzerland
    • Blanckenhorn, Wolf U.. Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse, CH, Zürich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Behavioral Ecology, 2018, vol. 29, no. 3, p. 769-777. Oxford University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:331920
    Summary
    Males of the fly Sepsis thoracica, which breeds in livestock dung, are either small and black or large and amber. In trying to understand the evolution of this rare phenomenon, we found that large amber males were more successful in obtaining mates, while small black males had greater mating success than males of intermediate size and color. This was mediated by different alternative aggressive mating behaviors that mainly differed in extent.