Selection on male sex pheromone composition contributes to butterfly reproductive isolation.
نویسندگان
چکیده
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.
منابع مشابه
Male sex pheromone components in the butterfly Heliconius
10 Sex specific pheromones are known to play an important role in butterfly courtship, and may 11 influence both individual reproductive success and reproductive isolation between species. 12 Extensive ecological, behavioural and genetic studies of Heliconius butterflies have made a 13 substantial contribution to our understanding of speciation. However, although long suspected 14 to play an im...
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Sex-specific pheromones are known to play an important role in butterfly courtship, and may influence both individual reproductive success and reproductive isolation between species. Extensive ecological, behavioural and genetic studies of Heliconius butterflies have made a substantial contribution to our understanding of speciation. Male pheromones, although long suspected to play an important...
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ورودعنوان ژورنال:
- Proceedings. Biological sciences
دوره 282 1804 شماره
صفحات -
تاریخ انتشار 2015