Reproductive character displacement of epicuticular compounds and their contribution to mate choice in drosophila subquinaria and drosophila recens

Dyer, Kelly A., White, Brooke E., Sztepanacz, Jacqueline L., Bewick, Emily R. and Rundle, Howard D. (2014) Reproductive character displacement of epicuticular compounds and their contribution to mate choice in drosophila subquinaria and drosophila recens. Evolution, 68 4: 1163-1175. doi:10.1111/evo.12335


Author Dyer, Kelly A.
White, Brooke E.
Sztepanacz, Jacqueline L.
Bewick, Emily R.
Rundle, Howard D.
Title Reproductive character displacement of epicuticular compounds and their contribution to mate choice in drosophila subquinaria and drosophila recens
Formatted title
Reproductive character displacement of epicuticular compounds and their contribution to mate choice in Drosophila subquinaria and Drosophila recens
Journal name Evolution   Check publisher's open access policy
ISSN 1558-5646
0014-3820
Publication date 2014-04
Year available 2014
Sub-type Article (original research)
DOI 10.1111/evo.12335
Open Access Status
Volume 68
Issue 4
Start page 1163
End page 1175
Total pages 13
Place of publication Oxford, United Kingdom
Publisher Wiley-Blackwell Publishing
Collection year 2015
Language eng
Formatted abstract
Interactions between species can alter selection on sexual displays used in mate choice within species. Here we study the epicuticular pheromones of two Drosophila species that overlap partially in geographic range and are incompletely reproductively isolated. Drosophila subquinaria shows a pattern of reproductive character displacement against Drosophila recens, and partial behavioral isolation between conspecific sympatric versus allopatric populations, whereas D. recens shows no such variation in mate choice. First, using manipulative perfuming experiments, we show that females use pheromones as signals for mate discrimination both between species and among populations of D. subquinaria. Second, we show that patterns of variation in epicuticular compounds, both across populations and between species, are consistent with those previously shown for mating probabilities: pheromone compositions differ between populations of D. subquinaria that are allopatric versus sympatric with D. recens, but are similar across populations of D. recens regardless of overlap with D. subquinaria. We also identify differences in pheromone composition among allopatric regions of D. subquinaria. In sum, our results suggest that epicuticular compounds are key signals used by females during mate recognition, and that these traits have diverged among D. subquinaria populations in response to reinforcing selection generated by the presence of D. recens.
Keyword Mate choice
Pheromones
Reinforcement
Sexual selection
Speciation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Biological Sciences Publications
 
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