RAD sequencing sheds new light on the genetic structure and local adaptation of European scallops and resolves their demographic histories

Type Article
Date 2019-05
Language English
Author(s) Vendrami David L. J.1, de Noia Michele1, 2, Telesca Luca3, 4, Handal William5, Charrier Gregory5, Boudry PierreORCID6, Eberhart-Phillips Luke7, Hoffman Joseph I.1, 4
Affiliation(s) 1 : Department of Animal Behavior, University of Bielefeld, Postfach 100131, 33615, Bielefeld, Germany
2 : Institute of Biodiversity, Animal Health & Comparative Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
3 : Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom
4 : British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 OET, United Kingdom
5 : University of Brest, Laboratoire des Sciences de l’Environnement Marin (LEMAR, UMR 6539, UBO/CNRS/IRD/Ifremer), European University Institute for the Sea (IUEM), rue Dumont d’Urville, 29280, Plouzané, France
6 : Ifremer, Laboratoire des Sciences de l’Environnement Marin (UBO/CNRS/IRD/Ifremer), Plouzané, France
7 : Department of Evolutionary Ecology and Behavioural Genetics, Max Planck Institute for Ornithology, Seewiesen, Germany
Source Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2019-05 , Vol. 9 , N. 1 , P. 7455 (13p.)
DOI 10.1038/s41598-019-43939-4
WOS© Times Cited 30

Recent developments in genomics are advancing our understanding of the processes shaping population structure in wild organisms. In particular, reduced representation sequencing has facilitated the generation of dense genetic marker datasets that provide greater power for resolving population structure, investigating the role of selection and reconstructing demographic histories. We therefore used RAD sequencing to study the great scallop Pecten maximus and its sister species P. jacobeus along a latitudinal cline in Europe. Analysis of 219 samples genotyped at 82,439 single nucleotide polymorphisms clearly resolved an Atlantic and a Norwegian group within P. maximus as well as P. jacobeus, in support of previous studies. Fine-scale structure was also detected, including pronounced differences involving Mulroy Bay in Ireland, where scallops are commercially cultured. Furthermore, we identified a suite of 279 environmentally associated loci that resolved a contrasting phylogenetic pattern to the remaining neutral loci, consistent with ecologically mediated divergence. Finally, demographic inference provided support for the two P. maximus groups having diverged during the last glacial maximum and subsequently expanded, whereas P. jacobeus diverged around 95,000 generations ago and experienced less pronounced expansion. Our results provide an integrative perspective on the factors shaping genome-wide differentiation in a commercially important marine invertebrate.

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Vendrami David L. J., de Noia Michele, Telesca Luca, Handal William, Charrier Gregory, Boudry Pierre, Eberhart-Phillips Luke, Hoffman Joseph I. (2019). RAD sequencing sheds new light on the genetic structure and local adaptation of European scallops and resolves their demographic histories. Scientific Reports, 9(1), 7455 (13p.). Publisher's official version : https://doi.org/10.1038/s41598-019-43939-4 , Open Access version : https://archimer.ifremer.fr/doc/00497/60901/