New insights on the population genetic structure of the great scallop ( Pecten maximus ) in the English Channel, coupling microsatellite data and demogenetic simulations

Type Article
Date 2020-10
Language English
Author(s) Handal William1, Szostek Claire2, Hold Natalie2, 3, Andrello Marco4, Thiébaut Eric5, Harney Ewan1, 6, Lefebvre Gwendoline1, Borcier Elodie1, Jolivet Aurélie7, Nicolle Amandine5, 8, Boyé AurelienORCID1, Foucher EricORCID9, Boudry PierreORCID10, Charrier Gregory1
Affiliation(s) 1 : Univ Brest CNRS, IRD, Ifremer, LEMAR F‐29280, Plouzané, France
2 : School of Ocean ScienceBangor University Bangor Wales, UK
3 : Environment Centre Wales, Molecular Ecology and Fisheries Genetics Laboratory School of Biological Sciences, College of Natural Sciences, Bangor University Bangor, Wales, UK
4 : Biodiversité Marine, Exploitation et Conservation (MARBEC), Centre national de la recherche scientifique (CNRS), L'Institut Français de Recherche pour l'Exploitation de la Mer (Ifremer), L'Institut de recherche pour le développement (IRD), Université de Montpellier Sète, France
5 : Station Biologique de Roscoff, UMR 7144, Adaptation et Diversité en Milieu Marin Centre national de la recherche scientifique (CNRS), Sorbonne Université Roscoff ,France
6 : Institute of Integrative Biology University of Liverpool Liverpool ,UK
7 : TBM Environnement, Porte Océane Auray, France
8 : École nationale supérieure de techniques avancées (ENSTA) Bretagne, Pôle STIC/HOP Brest ,France
9 : Laboratoire de Ressources Halieutiques, L'Institut Français de Recherche pour l'Exploitation de la Mer (Ifremer) en Manche Mer du Nord, Port en Bessin, France
10 : Ifremer Univ Brest, CNRS, IRD, LEMAR Plouzané, France
Source Aquatic Conservation-marine And Freshwater Ecosystems (1052-7613) (Wiley), 2020-10 , Vol. 30 , N. 10 , P. 1841-1853
DOI 10.1002/aqc.3316
WOS© Times Cited 5
Keyword(s) English Channel, gene flow, genetic modelling, genetic resources management, great scallop, low genetic structure, microsatellites
Abstract

The great scallop (Pecten maximus) is a commercially important bivalve in Europe, particularly in the English Channel, where fisheries are managed at regional and local scales through the regulation of fishing effort. In the long term, knowledge about larval dispersal and gene flow between populations is essential to ensure proper stock management. Yet, previous population genetic studies have reported contradictory results.

In this study, scallop samples collected across the main fishing grounds along the French and English coasts of the English Channel (20 samples with temporal replicates for three sites, n = 1059 individuals), and the population genetic structure was analysed using 13 microsatellite loci. Coupling empirical genetic data with demogenetic modelling based on a biophysical model simulating larval exchanges among scallop beds revealed a subtle genetic differentiation between south‐west English populations and the rest of the English Channel, which was consistent with larval dispersal simulations.

The present study provides a step forward in the understanding of great scallop population biology in the English Channel, underlining the fact that even in a context of potentially high gene flow and recent divergence times since the end of the last glacial maximum, weak but significant spatial genetic structure can be identified at a regional scale.

Full Text
File Pages Size Access
13 4 MB Access on demand
176 KB Access on demand
Author's final draft 32 792 KB Open access
Top of the page

How to cite 

Handal William, Szostek Claire, Hold Natalie, Andrello Marco, Thiébaut Eric, Harney Ewan, Lefebvre Gwendoline, Borcier Elodie, Jolivet Aurélie, Nicolle Amandine, Boyé Aurelien, Foucher Eric, Boudry Pierre, Charrier Gregory (2020). New insights on the population genetic structure of the great scallop ( Pecten maximus ) in the English Channel, coupling microsatellite data and demogenetic simulations. Aquatic Conservation-marine And Freshwater Ecosystems, 30(10), 1841-1853. Publisher's official version : https://doi.org/10.1002/aqc.3316 , Open Access version : https://archimer.ifremer.fr/doc/00648/76025/