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Sexual selection drives asymmetric introgression in wall lizards.

While, Geoffrey M; Michaelides, Sozos; Heathcote, Robert J P; MacGregor, Hannah E A; Zajac, Natalia; Beninde, Joscha; Carazo, Pau; Pérez I de Lanuza, Guillem; Sacchi, Roberto and Zuffi, Marco A L, et al. (2015) In Ecology Letters 18(12). p.1366-1375
Abstract
Hybridisation is increasingly recognised as an important cause of diversification and adaptation. Here, we show how divergence in male secondary sexual characters between two lineages of the common wall lizard (Podarcis muralis) gives rise to strong asymmetries in male competitive ability and mating success, resulting in asymmetric hybridisation upon secondary contact. Combined with no negative effects of hybridisation on survival or reproductive characters in F1-hybrids, these results suggest that introgression should be asymmetric, resulting in the displacement of sexual characters of the sub-dominant lineage. This prediction was confirmed in two types of secondary contact, across a natural contact zone and in two introduced populations.... (More)
Hybridisation is increasingly recognised as an important cause of diversification and adaptation. Here, we show how divergence in male secondary sexual characters between two lineages of the common wall lizard (Podarcis muralis) gives rise to strong asymmetries in male competitive ability and mating success, resulting in asymmetric hybridisation upon secondary contact. Combined with no negative effects of hybridisation on survival or reproductive characters in F1-hybrids, these results suggest that introgression should be asymmetric, resulting in the displacement of sexual characters of the sub-dominant lineage. This prediction was confirmed in two types of secondary contact, across a natural contact zone and in two introduced populations. Our study illustrates how divergence in sexually selected traits via male competition can determine the direction and extent of introgression, contributing to geographic patterns of genetic and phenotypic diversity. (Less)
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type
Contribution to journal
publication status
published
subject
in
Ecology Letters
volume
18
issue
12
pages
1366 - 1375
publisher
Wiley-Blackwell
external identifiers
  • pmid:26468006
  • wos:000364519000010
  • scopus:84946197709
ISSN
1461-023X
DOI
10.1111/ele.12531
language
English
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yes
id
702b215a-20df-475b-a386-198ded777d47 (old id 8152259)
date added to LUP
2015-11-16 09:48:49
date last changed
2017-11-19 03:24:02
@article{702b215a-20df-475b-a386-198ded777d47,
  abstract     = {Hybridisation is increasingly recognised as an important cause of diversification and adaptation. Here, we show how divergence in male secondary sexual characters between two lineages of the common wall lizard (Podarcis muralis) gives rise to strong asymmetries in male competitive ability and mating success, resulting in asymmetric hybridisation upon secondary contact. Combined with no negative effects of hybridisation on survival or reproductive characters in F1-hybrids, these results suggest that introgression should be asymmetric, resulting in the displacement of sexual characters of the sub-dominant lineage. This prediction was confirmed in two types of secondary contact, across a natural contact zone and in two introduced populations. Our study illustrates how divergence in sexually selected traits via male competition can determine the direction and extent of introgression, contributing to geographic patterns of genetic and phenotypic diversity.},
  author       = {While, Geoffrey M and Michaelides, Sozos and Heathcote, Robert J P and MacGregor, Hannah E A and Zajac, Natalia and Beninde, Joscha and Carazo, Pau and Pérez I de Lanuza, Guillem and Sacchi, Roberto and Zuffi, Marco A L and Horváthová, Terézia and Fresnillo, Belén and Schulte, Ulrich and Veith, Michael and Hochkirch, Axel and Uller, Tobias},
  issn         = {1461-023X},
  language     = {eng},
  number       = {12},
  pages        = {1366--1375},
  publisher    = {Wiley-Blackwell},
  series       = {Ecology Letters},
  title        = {Sexual selection drives asymmetric introgression in wall lizards.},
  url          = {http://dx.doi.org/10.1111/ele.12531},
  volume       = {18},
  year         = {2015},
}