Hybridization, sex-specific genomic architecture and local adaptation
(2018) In Philosophical Transactions of the Royal Society B: Biological Sciences 373(1757).- Abstract
While gene flow can reduce the potential for local adaptation, hybridization may conversely provide genetic variation that increases the potential for local adaptation. Hybridization may also affect adaptation through altering sexual dimorphism and sexual conflict, but this remains largely unstudied. Here, we discuss how hybridization may affect sexual dimorphism and conflict due to differential effects of hybridization on males and females, and then how this, in turn, may affect local adaptation. First, in species with heterochromatic sexes, the lower viability of the heterogametic sex in hybrids could shift the balance in sexual conflict. Second, sex-specific inheritance of the mitochondrial genome in hybrids may lead to cytonuclear... (More)
While gene flow can reduce the potential for local adaptation, hybridization may conversely provide genetic variation that increases the potential for local adaptation. Hybridization may also affect adaptation through altering sexual dimorphism and sexual conflict, but this remains largely unstudied. Here, we discuss how hybridization may affect sexual dimorphism and conflict due to differential effects of hybridization on males and females, and then how this, in turn, may affect local adaptation. First, in species with heterochromatic sexes, the lower viability of the heterogametic sex in hybrids could shift the balance in sexual conflict. Second, sex-specific inheritance of the mitochondrial genome in hybrids may lead to cytonuclear mismatches, for example, in the form of 'mother's curse', with potential consequences for sex ratio and sex-specific expression. Third, sex-biased introgression and recombination may lead to sex-specific consequences of hybridization. Fourth, transgressive segregation of sexually antagonistic alleles could increase sexual dimorphism in hybrid populations. Sexual dimorphism can reduce sexual conflict and enhance intersexual niche partitioning, increasing the fitness of hybrids. Adaptive introgression of alleles reducing sexual conflict or enhancing intersexual niche partitioning may facilitate local adaptation, and could favour the colonization of novel habitats. We review these consequences of hybridization on sex differences and local adaptation, and discuss how their prevalence and importance could be tested empirically.This article is part of the theme issue 'Linking local adaptation with the evolution of sex differences'.
(Less)
- author
- Runemark, Anna LU ; Eroukhmanoff, Fabrice ; Nava-Bolaños, Angela ; Hermansen, Jo S. and Meier, Joana I.
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- asymmetric introgression, hybridization, intersexual correlations, local adaptation, sex-specific inheritance, sex-specific recombination
- in
- Philosophical Transactions of the Royal Society B: Biological Sciences
- volume
- 373
- issue
- 1757
- publisher
- Royal Society Publishing
- external identifiers
-
- scopus:85067271778
- pmid:30150218
- ISSN
- 1471-2970
- DOI
- 10.1098/rstb.2017.0419
- language
- English
- LU publication?
- yes
- id
- 8e84ad84-cc96-4cb2-93e9-042297cabc53
- date added to LUP
- 2019-07-04 14:45:59
- date last changed
- 2024-06-11 21:13:08
@article{8e84ad84-cc96-4cb2-93e9-042297cabc53,
abstract = {{<p>While gene flow can reduce the potential for local adaptation, hybridization may conversely provide genetic variation that increases the potential for local adaptation. Hybridization may also affect adaptation through altering sexual dimorphism and sexual conflict, but this remains largely unstudied. Here, we discuss how hybridization may affect sexual dimorphism and conflict due to differential effects of hybridization on males and females, and then how this, in turn, may affect local adaptation. First, in species with heterochromatic sexes, the lower viability of the heterogametic sex in hybrids could shift the balance in sexual conflict. Second, sex-specific inheritance of the mitochondrial genome in hybrids may lead to cytonuclear mismatches, for example, in the form of 'mother's curse', with potential consequences for sex ratio and sex-specific expression. Third, sex-biased introgression and recombination may lead to sex-specific consequences of hybridization. Fourth, transgressive segregation of sexually antagonistic alleles could increase sexual dimorphism in hybrid populations. Sexual dimorphism can reduce sexual conflict and enhance intersexual niche partitioning, increasing the fitness of hybrids. Adaptive introgression of alleles reducing sexual conflict or enhancing intersexual niche partitioning may facilitate local adaptation, and could favour the colonization of novel habitats. We review these consequences of hybridization on sex differences and local adaptation, and discuss how their prevalence and importance could be tested empirically.This article is part of the theme issue 'Linking local adaptation with the evolution of sex differences'.</p>}},
author = {{Runemark, Anna and Eroukhmanoff, Fabrice and Nava-Bolaños, Angela and Hermansen, Jo S. and Meier, Joana I.}},
issn = {{1471-2970}},
keywords = {{asymmetric introgression; hybridization; intersexual correlations; local adaptation; sex-specific inheritance; sex-specific recombination}},
language = {{eng}},
number = {{1757}},
publisher = {{Royal Society Publishing}},
series = {{Philosophical Transactions of the Royal Society B: Biological Sciences}},
title = {{Hybridization, sex-specific genomic architecture and local adaptation}},
url = {{http://dx.doi.org/10.1098/rstb.2017.0419}},
doi = {{10.1098/rstb.2017.0419}},
volume = {{373}},
year = {{2018}},
}