ArticleG3 (Bethesda, Md.)2015
Genes with Restricted Introgression in a Field Cricket (Gryllus firmus/Gryllus pennsylvanicus) Hybrid Zone Are Concentrated on the X Chromosome and a Single Autosome.
Article in G3 (Bethesda, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 27 citations in OpenAlex.
- Admixture in a butterfly species complex creates a genomic mosaic of ancestry with distinct histories for different chromosomes.bioRxiv : the preprint server for biology · 2025Article
- Patterns of Genomic Heterogeneity in a Classic Field Cricket Mosaic Hybrid Zone.Ecology and evolution · 2024Article
- Enrichment of hard sweeps on the X chromosome compared to autosomes in six Drosophila species.Genetics · 2024Article
- Enrichment of hard sweeps on the X chromosome compared to autosomes in six Drosophila species.bioRxiv : the preprint server for biology · 2023Article
- Limited movement of an avian hybrid zone in relation to regional variation in magnitude of climate change.Molecular ecology · 2022Article
- Restricted X chromosome introgression and support for Haldane's rule in hybridizing damselflies.Proceedings. Biological sciences · 2022Article
- Dissecting cricket genomes for the advancement of entomology and entomophagy.Biophysical reviews · 2022Review
- Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes.Ecology and evolution · 2022Article
- A dense linkage map for a large repetitive genome: discovery of the sex-determining region in hybridizing fire-bellied toads (Bombina bombina and Bombina variegata).G3 (Bethesda, Md.) · 2021Article
- Article
- Gene exchange between two divergent species of the fungal human pathogen, Coccidioides.Evolution; international journal of organic evolution · 2019Article
- Evaluating genomic signatures of "the large X-effect" during complex speciation.Molecular ecology · 2018Review
- Recent admixture between species of the fungal pathogenEvolution letters · 2018Article
- Supervised machine learning reveals introgressed loci in the genomes of Drosophila simulans and D. sechellia.PLoS genetics · 2018Article
- The Genetic Architecture of Intra-Species Hybrid Mito-Nuclear Epistasis.Frontiers in genetics · 2018Article
- Mapping reduced introgression loci to the X chromosome of the hybridizing field crickets, Gryllus firmus and G. pennsylvanicus.PloS one · 2018Article
- Heterogeneous genome divergence, differential introgression, and the origin and structure of hybrid zones.Molecular ecology · 2016Article
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4 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Characterizing the extent of genomic differentiation between recently diverged lineages provides an important context for understanding the early stages of speciation. When such lineages form discrete hybrid zones, patterns of differential introgression allow direct estimates of which genome regions are likely involved in speciation and local adaptation. Here we use a backcross experimental design to construct a genetic linkage map for the field crickets Gryllus firmus and Gryllus pennsylvanicus, which interact in a well-characterized hybrid zone in eastern North America. We demonstrate that loci with major allele frequency differences between allopatric populations are not randomly distributed across the genome. Instead, most are either X-linked or map to a few small autosomal regions. Furthermore, the subset of those highly differentiated markers that exhibit restricted introgression across the cricket hybrid zone are also concentrated on the X chromosome (39 of 50 loci) and in a single 7-cM region of one autosome. Although the accumulation on the sex chromosome of genes responsible for postzygotic barriers is a well-known phenomenon, less attention has been given to the genomic distribution of genes responsible for prezygotic barriers. We discuss the implications of our results for speciation, both in the context of the role of sex chromosomes and also with respect to the likely causes of heterogeneous genomic divergence. Although we do not yet have direct evidence for the accumulation of ecological, behavioral, or fertilization prezygotic barrier genes on the X chromosome, faster-X evolution could make these barriers more likely to be X-linked.
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