Data/hora: 10/06/2024 06:20:48

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Using neutral, selected, and hitchhiker loci to assess connectivity of marine populations in the genomic era
Autores: | Gagnaire, Pierre-alexandre; Broquet, Thomas; Aurelle, Didier; Viard, Frederique; Souissi, Ahmed; Bonhomme, Francois; Arnaud-haond, Sophie; Bierne, Nicolas.
Data: | 2015-09
Ano: | 2015
Palavras-chave: | Connectivity; Gene flow; Marine conservation; Population genomics; Population structure.
Resumo: | Estimating the rate of exchange of individuals among populations is a central concern to evolutionary ecology and its applications to conservation and management. For instance, the efficiency of protected areas in sustaining locally endangered populations and ecosystems depends on reserve network connectivity. The population genetics theory offers a powerful framework for estimating dispersal distances and migration rates from molecular data. In the marine realm, however, decades of molecular studies have met limited success in inferring genetic connectivity, due to the frequent lack of spatial genetic structure in species exhibiting high fecundity and dispersal capabilities. This is especially true within biogeographic regions bounded by well-known hotspots of genetic differentiation. Here, we provide an overview of the current methods for estimating genetic connectivity using molecular markers and propose several directions for improving existing approaches using large population genomic datasets. We highlight several issues that limit the effectiveness of methods based on neutral markers when there is virtually no genetic differentiation among samples. We then focus on alternative methods based on markers influenced by selection. Although some of these methodologies are still underexplored, our aim was to stimulate new research to test how broadly they are applicable to nonmodel marine species. We argue that the increased ability to apply the concepts of cline analyses will improve dispersal inferences across physical and ecological barriers that reduce connectivity locally. We finally present how neutral markers hitchhiking with selected loci can also provide information about connectivity patterns within apparently well-mixed biogeographic regions. We contend that one of the most promising applications of population genomics is the use of outlier loci to delineate relevant conservation units and related eco-geographic features across which connectivity can be measured.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00275/38592/37120.pdf

DOI:10.1111/eva.12288

http://archimer.ifremer.fr/doc/00275/38592/

Editor: | Wiley-blackwell
Formato: | application/pdf
Fonte: | Evolutionary Applications (1752-4571) (Wiley-blackwell), 2015-09 , Vol. 8 , N. 8 , P. 769-786

Fonte:

2015 The Authors. Evolutionary Applications published by John Wiley &amp; Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

info:eu-repo/semantics/openAccess

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