Recent hybrids recapitulate ancient hybrid outcomes.

Autor:	Chaturvedi S; Department of Biology, Utah State University, Logan, UT, 84322, USA.; Ecology Center, Utah State University, Logan, UT, 84322, USA.; Department of Organismic & Evolutionary Biology, Harvard University, Cambridge, MA, 02138, USA., Lucas LK; Department of Biology, Utah State University, Logan, UT, 84322, USA., Buerkle CA; Department of Botany, University of Wyoming, Laramie, WY, 82071, USA., Fordyce JA; Department of Ecology & Evolutionary Biology, University of Tennessee, Knoxville, TN, 37996, USA., Forister ML; Department of Biology, University of Nevada, Reno, NV, 89557, USA., Nice CC; Department of Biology, Texas State University, San Marcos, TX, 78666, USA., Gompert Z; Department of Biology, Utah State University, Logan, UT, 84322, USA. zach.gompert@usu.edu.; Ecology Center, Utah State University, Logan, UT, 84322, USA. zach.gompert@usu.edu.
Jazyk:	angličtina
Zdroj:	Nature communications [Nat Commun] 2020 May 01; Vol. 11 (1), pp. 2179. Date of Electronic Publication: 2020 May 01.
DOI:	10.1038/s41467-020-15641-x
Abstrakt:	Genomic outcomes of hybridization depend on selection and recombination in hybrids. Whether these processes have similar effects on hybrid genome composition in contemporary hybrid zones versus ancient hybrid lineages is unknown. Here we show that patterns of introgression in a contemporary hybrid zone in Lycaeides butterflies predict patterns of ancestry in geographically adjacent, older hybrid populations. We find a particularly striking lack of ancestry from one of the hybridizing taxa, Lycaeides melissa, on the Z chromosome in both the old and contemporary hybrids. The same pattern of reduced L. melissa ancestry on the Z chromosome is seen in two other ancient hybrid lineages. More generally, we find that patterns of ancestry in old or ancient hybrids are remarkably predictable from contemporary hybrids, which suggests selection and recombination affect hybrid genomes in a similar way across disparate time scales and during distinct stages of speciation and species breakdown.
Databáze:	MEDLINE
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