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Differentiation in putative male sex pheromone components across and within populations of the African butterfly Bicyclus anynana as a potential driver of reproductive isolation

Bacquet, Paul M B; de Jong, Maaike A; Brattström, Oskar LU ; Wang, Hong-Lei LU ; Molleman, Freerk; Heuskin, Stéphanie; Lognay, George; Löfstedt, Christer LU ; Brakefield, Paul M and Vanderpoorten, Alain, et al. (2016) In Ecology and Evolution 6(17). p.6064-6084
Abstract
Sexual traits are often the most divergent characters among closely
related species, suggesting an important role of sexual traits in
speciation. However, to prove this, we need to show that sexual trait
differences accumulate before or during the speciation process, rather
than being a consequence of it. Here, we contrast patterns of divergence
among putative male sex pheromone (pMSP) composition and the genetic
structure inferred from variation in the mitochondrial cytochrome
oxidase 1 and nuclear CAD loci in the African butterfly Bicyclus anynana
(Butler, 1879) to determine whether the evolution of “pheromonal
dialects” occurs before or after the differentiation process. We
... (More)
Sexual traits are often the most divergent characters among closely
related species, suggesting an important role of sexual traits in
speciation. However, to prove this, we need to show that sexual trait
differences accumulate before or during the speciation process, rather
than being a consequence of it. Here, we contrast patterns of divergence
among putative male sex pheromone (pMSP) composition and the genetic
structure inferred from variation in the mitochondrial cytochrome
oxidase 1 and nuclear CAD loci in the African butterfly Bicyclus anynana
(Butler, 1879) to determine whether the evolution of “pheromonal
dialects” occurs before or after the differentiation process. We
observed differences in abundance of some shared pMSP components as well
as differences in the composition of the pMSP among B. anynana populations. In addition, B. anynana
individuals from Kenya displayed differences in the pMSP composition
within a single population that appeared not associated with genetic
differences. These differences in pMSP composition both between and
within B. anynana populations were as large as those found between different Bicyclus species. Our results suggest that “pheromonal dialects” evolved within and among populations of B. anynana and may therefore act as precursors of an ongoing speciation process. (Less)
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publication status
published
subject
keywords
Lepidoptera, male sex pheromone, mitochondrial introgression, population divergence, reproductive isolation, speciation
in
Ecology and Evolution
volume
6
issue
17
pages
21 pages
publisher
Wiley-Blackwell
external identifiers
  • wos:000383362700004
  • scopus:84986295255
ISSN
2045-7758
DOI
10.1002/ece3.2298
language
English
LU publication?
yes
id
b5cc9a37-d8eb-4f9b-ba33-af5894325c53
date added to LUP
2016-09-21 18:13:15
date last changed
2019-08-14 03:29:04
@article{b5cc9a37-d8eb-4f9b-ba33-af5894325c53,
  abstract     = {Sexual traits are often the most divergent characters among closely <br>
related species, suggesting an important role of sexual traits in <br>
speciation. However, to prove this, we need to show that sexual trait <br>
differences accumulate before or during the speciation process, rather <br>
than being a consequence of it. Here, we contrast patterns of divergence<br>
 among putative male sex pheromone (pMSP) composition and the genetic <br>
structure inferred from variation in the mitochondrial cytochrome <br>
oxidase 1 and nuclear CAD loci in the African butterfly <i>Bicyclus anynana</i><br>
 (Butler, 1879) to determine whether the evolution of “pheromonal <br>
dialects” occurs before or after the differentiation process. We <br>
observed differences in abundance of some shared pMSP components as well<br>
 as differences in the composition of the pMSP among <i>B. anynana</i> populations. In addition, <i>B. anynana</i><br>
 individuals from Kenya displayed differences in the pMSP composition <br>
within a single population that appeared not associated with genetic <br>
differences. These differences in pMSP composition both between and <br>
within <i>B. anynana</i> populations were as large as those found between different <i>Bicyclus</i> species. Our results suggest that “pheromonal dialects” evolved within and among populations of <i>B. anynana</i> and may therefore act as precursors of an ongoing speciation process.},
  author       = {Bacquet, Paul M B and de Jong, Maaike A and Brattström, Oskar and Wang, Hong-Lei and Molleman, Freerk and Heuskin, Stéphanie and Lognay, George and Löfstedt, Christer and Brakefield, Paul M and Vanderpoorten, Alain and Nieberding, Caroline M},
  issn         = {2045-7758},
  keyword      = {Lepidoptera,male sex pheromone,mitochondrial introgression,population divergence,reproductive isolation,speciation},
  language     = {eng},
  month        = {09},
  number       = {17},
  pages        = {6064--6084},
  publisher    = {Wiley-Blackwell},
  series       = {Ecology and Evolution},
  title        = {Differentiation in putative male sex pheromone components across and within populations of the African butterfly <i>Bicyclus anynana</i> as a potential driver of reproductive isolation},
  url          = {http://dx.doi.org/10.1002/ece3.2298},
  volume       = {6},
  year         = {2016},
}