Cargando…

Human influence on brown trout juvenile body size during metapopulation expansion

Change in body size can be driven by social (density) and non-social (environmental and spatial variation) factors. In expanding metapopulations, spatial sorting by means of dispersal on the expansion front can further drive the evolution of body size. However, human intervention can dramatically af...

Descripción completa

Detalles Bibliográficos
Autores principales: Aulus-Giacosa, L., Guéraud, F., Gaudin, P., Buoro, M., Aymes, J. C., Labonne, J., Vignon, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8548077/
https://www.ncbi.nlm.nih.gov/pubmed/34699739
http://dx.doi.org/10.1098/rsbl.2021.0366
_version_ 1784590494549934080
author Aulus-Giacosa, L.
Guéraud, F.
Gaudin, P.
Buoro, M.
Aymes, J. C.
Labonne, J.
Vignon, M.
author_facet Aulus-Giacosa, L.
Guéraud, F.
Gaudin, P.
Buoro, M.
Aymes, J. C.
Labonne, J.
Vignon, M.
author_sort Aulus-Giacosa, L.
collection PubMed
description Change in body size can be driven by social (density) and non-social (environmental and spatial variation) factors. In expanding metapopulations, spatial sorting by means of dispersal on the expansion front can further drive the evolution of body size. However, human intervention can dramatically affect these founder effects. Using long-term monitoring of the colonization of the remote Kerguelen islands by brown trout, a facultative anadromous salmonid, we analyse body size variation in 32 naturally founded and 10 human-introduced populations over 57 years. In naturally founded populations, we find that spatial sorting promotes slow positive changes in body size on the expansion front, then that body size decreases as populations get older and local density increases. This pattern is, however, completely different in human-introduced populations, where body size remains constant or even increases as populations get older. The present findings confirm that changes in body size can be affected by metapopulation expansion, but that human influence, even in very remote environments, can fully alter this process.
format Online
Article
Text
id pubmed-8548077
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Royal Society
record_format MEDLINE/PubMed
spelling pubmed-85480772021-10-27 Human influence on brown trout juvenile body size during metapopulation expansion Aulus-Giacosa, L. Guéraud, F. Gaudin, P. Buoro, M. Aymes, J. C. Labonne, J. Vignon, M. Biol Lett Evolutionary Biology Change in body size can be driven by social (density) and non-social (environmental and spatial variation) factors. In expanding metapopulations, spatial sorting by means of dispersal on the expansion front can further drive the evolution of body size. However, human intervention can dramatically affect these founder effects. Using long-term monitoring of the colonization of the remote Kerguelen islands by brown trout, a facultative anadromous salmonid, we analyse body size variation in 32 naturally founded and 10 human-introduced populations over 57 years. In naturally founded populations, we find that spatial sorting promotes slow positive changes in body size on the expansion front, then that body size decreases as populations get older and local density increases. This pattern is, however, completely different in human-introduced populations, where body size remains constant or even increases as populations get older. The present findings confirm that changes in body size can be affected by metapopulation expansion, but that human influence, even in very remote environments, can fully alter this process. The Royal Society 2021-10-27 /pmc/articles/PMC8548077/ /pubmed/34699739 http://dx.doi.org/10.1098/rsbl.2021.0366 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Evolutionary Biology
Aulus-Giacosa, L.
Guéraud, F.
Gaudin, P.
Buoro, M.
Aymes, J. C.
Labonne, J.
Vignon, M.
Human influence on brown trout juvenile body size during metapopulation expansion
title Human influence on brown trout juvenile body size during metapopulation expansion
title_full Human influence on brown trout juvenile body size during metapopulation expansion
title_fullStr Human influence on brown trout juvenile body size during metapopulation expansion
title_full_unstemmed Human influence on brown trout juvenile body size during metapopulation expansion
title_short Human influence on brown trout juvenile body size during metapopulation expansion
title_sort human influence on brown trout juvenile body size during metapopulation expansion
topic Evolutionary Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8548077/
https://www.ncbi.nlm.nih.gov/pubmed/34699739
http://dx.doi.org/10.1098/rsbl.2021.0366
work_keys_str_mv AT aulusgiacosal humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion
AT gueraudf humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion
AT gaudinp humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion
AT buorom humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion
AT aymesjc humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion
AT labonnej humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion
AT vignonm humaninfluenceonbrowntroutjuvenilebodysizeduringmetapopulationexpansion