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Proc Biol Sci

Title:		Selection on male sex pheromone composition contributes to butterfly reproductive isolation
Author(s):		Bacquet PM; Brattstrom O; Wang HL; Allen CE; Lofstedt C; Brakefield PM; Nieberding CM;
Address:		"Evolutionary Ecology and Genetics Group, Biodiversity Research Centre, Earth and Life Institute, Universite Catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium. Department of Zoology, University Museum of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. Department of Biology, Pheromone Group, Lund University, SE-223 62 Lund, Sweden. Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA. Evolutionary Ecology and Genetics Group, Biodiversity Research Centre, Earth and Life Institute, Universite Catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium caroline.nieberding@uclouvain.be"
Journal Title:		Proc Biol Sci
Year:		2015
Volume:		282
Issue:		1804
Page Number:		20142734 -
DOI:		10.1098/rspb.2014.2734
ISSN/ISBN:		1471-2954 (Electronic) 0962-8452 (Print) 0962-8452 (Linking)
Abstract:		"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"
Keywords:		Africa Animals Butterflies/genetics/*physiology Insect Proteins/*genetics/metabolism Male Molecular Sequence Data Phylogeny *Reproductive Isolation Sex Attractants/*genetics/metabolism Sympatry chemical communication comparative analysis rapid evolution s;
Notes:		"MedlineBacquet, P M B Brattstrom, O Wang, H-L Allen, C E Lofstedt, C Brakefield, P M Nieberding, C M eng Research Support, Non-U.S. Gov't England 2015/03/06 Proc Biol Sci. 2015 Apr 7; 282(1804):20142734. doi: 10.1098/rspb.2014.2734"