ArticlePloS one2013
Genomic consequences of ecological speciation in astyanax cavefish.
Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 27 citations in OpenAlex.
- Sex-dependent increase of movement activity in the freshwater isopodCurrent zoology · 2023Article
- Bypassing Mendel's First Law: Transmission Ratio Distortion in Mammals.International journal of molecular sciences · 2023Review
- Parent-offspring genotyped trios unravelling genomic regions with gametic and genotypic epistatic transmission bias on the cattle genome.Frontiers in genetics · 2023Article
- Genomic Analysis of the Only Blind Cichlid Reveals Extensive Inactivation in Eye and Pigment Formation Genes.Genome biology and evolution · 2020Article
- Sperm swimming behaviors are correlated with sperm haploid genetic variability in the Mexican tetra, Astyanax mexicanus.PloS one · 2019Article
- Article
- Towards an integrated approach to understand Mexican cavefish evolution.Biology letters · 2018Review
- The Evolution of Gene Expression Underlying Vision Loss in Cave Animals.Molecular biology and evolution · 2018Article
- Unique sperm haplotypes are associated with phenotypically different sperm subpopulations in Astyanax fish.BMC biology · 2018Article
- Distinct genetic architecture underlies the emergence of sleep loss and prey-seeking behavior in the Mexican cavefish.BMC biology · 2015Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The cave environment is consistently radically different than the surface environment because it lacks light, and animals adapting to cave life are subject to strong selective forces much different than those experienced by their ancestors who evolved in the presence of light. As such, their divergence from surface ancestors and eventual speciation is likely to be driven by the shift in ecology. We report here that hybrids between cave and surface Astyanax mexicanus fishes produce offspring with allelic frequencies that differ significantly from Mendelian expectations both for transmission ratios and for independent assortment of unlinked markers. Comparison of allelic content of DNA from fin clips and sperm pools show that the transmission ratio distortion likely occurs during spermatogenesis. Departures from expectations of independent assortment are essentially epistatic phenomena generating linkage disequilibrium. A novel analysis of the epistatic interactions reveals an apparent network of interactions among genes known or suspected to be involved in cave adaptation, implying that the epistasis arose as a "by product" of the divergence due to cave adaptation.
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