ArticleProceedings. Biological sciences2005
Patterns of male sterility in a grasshopper hybrid zone imply accumulation of hybrid incompatibilities without selection.
Article in Proceedings. Biological sciences, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed.
- Fluctuating reproductive isolation and stable ancestry structure in a fine-scaled mosaic of hybridizing Mimulus monkeyflowers.PLoS genetics · 2025Article
- Ten years of demographic modelling of divergence and speciation in the sea.Evolutionary applications · 2023Article
- A single pleiotropic locus influences the rate of hybridization between two sibling species ofEcology and evolution · 2020Article
- A two-locus hybrid incompatibility is widespread, polymorphic, and active in natural populations of Mimulus.Evolution; international journal of organic evolution · 2018Article
- Article
- Inconsistent reproductive isolation revealed by interactions betweenEvolution letters · 2017Article
- Differential introgression and the maintenance of species boundaries in an advanced generation avian hybrid zone.BMC evolutionary biology · 2016Article
- Speciation and reduced hybrid female fertility in house mice.Evolution; international journal of organic evolution · 2015Article
- Highly variable reproductive isolation among pairs of Catostomus species.Molecular ecology · 2015Article
- Article
- Fertilisation and early developmental barriers to hybridisation in field crickets.BMC evolutionary biology · 2013Article
- Article
- Article
- A genome scan and linkage disequilibrium analysis among chromosomal races of the Australian grasshopper Vandiemenella viatica.PloS one · 2012Article
- Article
- Genetic architecture of hybrid male sterility in Drosophila: analysis of intraspecies variation for interspecies isolation.PloS one · 2008Article
- Asymmetry and polymorphism of hybrid male sterility during the early stages of speciation in house mice.Evolution; international journal of organic evolution · 2008Article
- What causes partial F1 hybrid viability? Incomplete penetrance versus genetic variation.PloS one · 2007Article
- Article
- Do the benefits of polyandry scale with outbreeding?Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
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Authors and funding
4 authors.
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Abstract
It is now widely accepted that post-zygotic reproductive isolation is the result of negative epistatic interactions between derived alleles fixed independently at different loci in diverging populations (the Dobzhansky-Muller model). What is less clear is the nature of the loci involved and whether the derived alleles increase in frequency through genetic drift, or as a result of natural or sexual selection. If incompatible alleles are fixed by selection, transient polymorphisms will be rare and clines for these alleles will be steep where divergent populations meet. If they evolve by drift, populations are expected to harbour substantial genetic variation in compatibility and alleles will introgress across hybrid zones once they recombine onto a genetic background with which they are compatible. Here we show that variation in male sterility in a naturally occurring Chorthippus parallelus grasshopper hybrid zone conforms to the neutral expectations. Asymmetrical clines for male sterility have long tails of introgression and populations distant from the zone centre show significant genetic variation for compatibility. Our data contrast with recent observations on 'speciation genes' that have diverged as a result of strong natural selection.
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