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Selection on male sex pheromone composition contributes to butterfly reproductive isolation.

In English

Författare

Summary, in English

Selection can facilitate diversification by inducing character displacement in mate choice traits that reduce the probability of maladaptive mating between lineages. Although reproductive character displacement (RCD) has been demonstrated in two-taxa case studies, the frequency of this process in nature is still debated. Moreover, studies have focused primarily on visual and acoustic traits, despite the fact that chemical communication is probably the most common means of species recognition. Here, we showed in a large, mostly sympatric, butterfly genus, a strong pattern of recurrent RCD for predicted male sex pheromone composition, but not for visual mate choice traits. Our results suggest that RCD is not anecdotal, and that selection for divergence in male sex pheromone composition contributed to reproductive isolation within the Bicyclus genus. We propose that selection may target olfactory mate choice traits as a more common sensory modality to ensure reproductive isolation among diverging lineages than previously envisaged.

Publiceringsår

2015

Språk

Engelska

Publikation/Tidskrift/Serie

Royal Society of London. Proceedings B. Biological Sciences

Volym

282

Issue

1804

Dokumenttyp

Artikel i tidskrift

Förlag

Royal Society Publishing

Ämne

  • Zoology

Status

Published

Projekt

  • Evolutionary mechanisms of pheromone divergence in Lepidoptera

Forskningsgrupp

  • Pheromone Group

ISBN/ISSN/Övrigt

  • ISSN: 1471-2954