Temperature-associated selection linked to putative chromosomal inversions in king scallop ( Pecten maximus ).

Autor:	Hollenbeck CM; Department of Life Sciences, Texas A&M University Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.; Texas A&M AgriLife Research, College Station, TX, USA., Portnoy DS; Department of Life Sciences, Texas A&M University Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA., Garcia de la Serrana D; Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain., Magnesen T; Department of Biological Sciences, University of Bergen, Thormøhlensgt 53B, Bergen, Norway., Matejusova I; Marine Science Scotland, Marine Laboratory, 375 Victoria Road, Aberdeen AB11 9DB, UK., Johnston IA; Scottish Oceans Institute, School of Biology, University of St Andrews, St Andrews, Fife KY16 8LB, UK.; Xelect Ltd, Horizon House, Abbey Walk, St Andrews KY16 9LB, UK.
Jazyk:	angličtina
Zdroj:	Proceedings. Biological sciences [Proc Biol Sci] 2022 Oct 12; Vol. 289 (1984), pp. 20221573. Date of Electronic Publication: 2022 Oct 05.
DOI:	10.1098/rspb.2022.1573
Abstrakt:	The genomic landscape of divergence-the distribution of differences among populations or species across the genome-is increasingly characterized to understand the role that microevolutionary forces such as natural selection and recombination play in causing and maintaining genetic divergence. This line of inquiry has also revealed chromosome structure variation to be an important factor shaping the landscape of adaptive genetic variation. Owing to a high prevalence of chromosome structure variation and the strong pressure for local adaptation necessitated by their sessile nature, bivalve molluscs are an ideal taxon for exploring the relationship between chromosome structure variation and local adaptation. Here, we report a population genomic survey of king scallop ( Pecten maximus ) across its natural range in the northeastern Atlantic Ocean, using a recent chromosome-level genome assembly. We report the presence of at least three large (12-22 Mb), putative chromosomal inversions associated with sea surface temperature and whose frequencies are in contrast to neutral population structure. These results highlight a potentially large role for recombination-suppressing chromosomal inversions in local adaptation and suggest a hypothesis to explain the maintenance of differences in reproductive timing found at relatively small spatial scales across king scallop populations.
Databáze:	MEDLINE
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