English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/114207
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Potential for adaptive evolution at species range margins: Contrasting interactions between red coral populations and their environment in a changing ocean

AuthorsLedoux, J. B. ; Aurelle, D.; Bensoussan, Nathaniel; Marschal, C.; Féral, J.P.; Garrabou, Joaquim
KeywordsReciprocal transplants
Potential for local adaptation
Phenotypic buffering
Marginal populations
Deep refugia hypothesis
Corallium rubrum
Common garden
Issue DateMar-2015
PublisherJohn Wiley & Sons
CitationEcology and Evolution 5(6): 1178-1192 (2015)
AbstractStudying population-by-environment interactions (PEIs) at species range margins offers the opportunity to characterize the responses of populations facing an extreme regime of selection, as expected due to global change. Nevertheless, the importance of these marginal populations as putative reservoirs of adaptive genetic variation has scarcely been considered in conservation biology. This is particularly true in marine ecosystems for which the deep refugia hypothesis proposes that disturbed shallow and marginal populations of a given species can be replenished by mesophotic ones. This hypothesis therefore assumes that identical PEIs exist between populations, neglecting the potential for adaptation at species range margins. Here, we combine reciprocal transplant and common garden experiments with population genetics analyses to decipher the PEIs in the red coral, Corallium rubrum. Our analyses reveal partially contrasting PEIs between shallow and mesophotic populations separated by approximately one hundred meters, suggesting that red coral populations may potentially be locally adapted to their environment. Based on the effective population size and connectivity analyses, we posit that genetic drift may be more important than gene flow in the adaptation of the red coral. We further investigate how adaptive divergence could impact population viability in the context of warming and demonstrate differential phenotypic buffering capacities against thermal stress. Our study questions the relevance of the deep refugia hypothesis and highlights the conservation value of marginal populations as a putative reservoir of adaptive genetic polymorphism. In marine conservation, the deep-refugia hypothesis proposes that disturbed shallow and marginal populations of a given species can be replenished by mesophotic populations. Combining reciprocal transplant and common garden experiments with population genetics analyses we question the relevance of this hypothesis in the red coral, Corallium rubrum. Our study highlights the conservation value of marginal populations as a putative reservoir of adaptive genetic polymorphism. © 2015 Published by John Wiley & Sons Ltd.
Description15 pages, 4 figures, 2 tables, supporting information http://onlinelibrary.wiley.com/doi/10.1002/ece3.1324/suppinfo
Publisher version (URL)http://dx.doi.org/10.1002/ece3.1324
URIhttp://hdl.handle.net/10261/114207
DOI10.1002/ece3.1324
Identifiersdoi: 10.1002/ece3.1324
issn: 2045-7758
e-issn: 2045-7758
Appears in Collections:(ICM) Artículos
Files in This Item:
File Description SizeFormat 
Ledoux_et_al_2015.pdf871,92 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.