Landscape genomics of the American lobster ( Homarus americanus )
Type | Article | ||||||||||||||||
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Date | 2022-10 | ||||||||||||||||
Language | English | ||||||||||||||||
Author(s) | Dorant Yann1, 2, Laporte Martin1, 3, Rougemont Quentin1, 4, Cayuela Hugo1, 5, Rochette Rémy6, Bernatchez Louis1 | ||||||||||||||||
Affiliation(s) | 1 : Institut de Biologie Intégrative des Systèmes (IBIS) Université Laval G1V0A6 Québec QC, Canada 2 : IHPE, Univ. Montpellier, CNRS, Ifremer, Univ. Perpignan Via Domitia, Montpellier, France 3 : Ministère des Forêts de la Faune et des Parcs du Québec ,Canada 4 : CEFE, Univ Montpellier, CNRS, EPHE, IRD Montpellier, France 5 : Laboratoire de Biométrie et Biologie Évolutive Université Lyon 1 CNRS, UMR 5558, Villeurbanne F‐10769622 ,France 6 : Department of Biology University of New Brunswick, P.O. Box 5050 E2L 4L5 Saint John NB ,Canada |
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Source | Molecular Ecology (0962-1083) (Wiley), 2022-10 , Vol. 31 , N. 20 , P. 5182-5200 | ||||||||||||||||
DOI | 10.1111/mec.16653 | ||||||||||||||||
WOS© Times Cited | 9 | ||||||||||||||||
Keyword(s) | adaptive markers, fisheries, genetic units, genomics, lobster | ||||||||||||||||
Abstract | In marine species experiencing intense fishing pressures, knowledge of genetic structure and local adaptation represent a critical information to assist sustainable management. In this study, we performed a landscape genomics analysis in the American lobster to investigate the issues pertaining to the consequences of making use of putative adaptive loci to reliably infer population structure and thus more rigorously delineating biological management units in marine exploited species. Toward this end, we genotyped 14,893 single nucleotide polymorphism (SNPs) in 4,190 lobsters sampled across 96 sampling sites distributed along 1000 km in the northwest Atlantic in both Canada and the USA. As typical for most marine species, we observed a weak, albeit highly significant genetic structure. We also found that adaptive genetic variation allows detecting fine-scale population structure not resolved by neutral genetic variation alone. Using the recent genome assembly of the American lobster, we were able to map and annotate several SNPs located in functional genes potentially implicated in adaptive processes such as thermal stress response, salinity tolerance and growth metabolism pathways. Taken together, our study indicates that weak population structure in high gene flow systems can be resolved at various spatial scales, and that putatively adaptive genetic variation can substantially enhance the delineation of biological management units of marine exploited species. |
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