Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands
International audience Human-mediated biological invasions constitute interesting case studies to understand evolutionary processes, including the role of founder effects. Population expansion of newly introduced species can be highly dependant on barriers caused by landscape features, but identifyi...
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ftunivpau:oai:HAL:hal-02655643v1 2023-11-12T04:20:08+01:00 Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands Launey, Sophie Brunet, Géraldine Guyomard, René, R. Davaine, Patrick Unité de recherche Génétique des Poissons (UGP) Institut National de la Recherche Agronomique (INRA) Écologie et santé des écosystèmes (ESE) Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST Ecologie Comportementale et Biologie des Populations de Poissons (ECOBIOP) Institut National de la Recherche Agronomique (INRA)-Université de Pau et des Pays de l'Adour (UPPA) 2010 https://hal.inrae.fr/hal-02655643 https://doi.org/10.1093/jhered/esp130 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/jhered/esp130 hal-02655643 https://hal.inrae.fr/hal-02655643 doi:10.1093/jhered/esp130 PRODINRA: 37844 WOS: 000276747000002 ISSN: 0022-1503 EISSN: 1471-8505 Journal of Heredity https://hal.inrae.fr/hal-02655643 Journal of Heredity, 2010, 101 (3), pp.270-283. ⟨10.1093/jhered/esp130⟩ http://jhered.oxfordjournals.org/ adaptation environmental factor genetic variability landscape migration salmo trutta [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2010 ftunivpau https://doi.org/10.1093/jhered/esp130 2023-10-15T20:41:43Z International audience Human-mediated biological invasions constitute interesting case studies to understand evolutionary processes, including the role of founder effects. Population expansion of newly introduced species can be highly dependant on barriers caused by landscape features, but identifying these barriers and their impact on genetic structure is a relatively recent concern in population genetics and ecology. Salmonid populations of the Kerguelen Islands archipelago are a favorable model system to address these questions as these populations are characterized by a simple history of introduction, little or no anthropogenic influence, and demographic monitoring since the first introductions. We analyzed genetic variation at 10 microsatellite loci in 19 populations of brown trout (Salmo trutta L.) in the Courbet Peninsula (Kerguelen Islands), where the species, introduced in 3 rivers only, has colonized the whole water system in 40 years. Despite a limited numbers of introductions, trout populations have maintained a genetic diversity comparable with what is found in hatchery or wild populations in Europe, but they are genetically structured. The main factor explaining the observed patterns of genetic diversity is the history of introductions, with each introduced population acting as a source for colonization of nearby rivers. Correlations between environmental and genetic parameters show that within each "source population" group, landscape characteristics (type of coast, accessibility of river mouth, distances between rivers, river length .) play a role in shaping directions and rates of migration, and thus the genetic structure of the colonizing populations. Article in Journal/Newspaper Kerguelen Islands HAL e2s UPPA (Université de Pau et des Pays de l'Adour) Kerguelen Kerguelen Islands Journal of Heredity 101 3 270 283 |
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Open Polar |
collection |
HAL e2s UPPA (Université de Pau et des Pays de l'Adour) |
op_collection_id |
ftunivpau |
language |
English |
topic |
adaptation environmental factor genetic variability landscape migration salmo trutta [SDV]Life Sciences [q-bio] |
spellingShingle |
adaptation environmental factor genetic variability landscape migration salmo trutta [SDV]Life Sciences [q-bio] Launey, Sophie Brunet, Géraldine Guyomard, René, R. Davaine, Patrick Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands |
topic_facet |
adaptation environmental factor genetic variability landscape migration salmo trutta [SDV]Life Sciences [q-bio] |
description |
International audience Human-mediated biological invasions constitute interesting case studies to understand evolutionary processes, including the role of founder effects. Population expansion of newly introduced species can be highly dependant on barriers caused by landscape features, but identifying these barriers and their impact on genetic structure is a relatively recent concern in population genetics and ecology. Salmonid populations of the Kerguelen Islands archipelago are a favorable model system to address these questions as these populations are characterized by a simple history of introduction, little or no anthropogenic influence, and demographic monitoring since the first introductions. We analyzed genetic variation at 10 microsatellite loci in 19 populations of brown trout (Salmo trutta L.) in the Courbet Peninsula (Kerguelen Islands), where the species, introduced in 3 rivers only, has colonized the whole water system in 40 years. Despite a limited numbers of introductions, trout populations have maintained a genetic diversity comparable with what is found in hatchery or wild populations in Europe, but they are genetically structured. The main factor explaining the observed patterns of genetic diversity is the history of introductions, with each introduced population acting as a source for colonization of nearby rivers. Correlations between environmental and genetic parameters show that within each "source population" group, landscape characteristics (type of coast, accessibility of river mouth, distances between rivers, river length .) play a role in shaping directions and rates of migration, and thus the genetic structure of the colonizing populations. |
author2 |
Unité de recherche Génétique des Poissons (UGP) Institut National de la Recherche Agronomique (INRA) Écologie et santé des écosystèmes (ESE) Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST Ecologie Comportementale et Biologie des Populations de Poissons (ECOBIOP) Institut National de la Recherche Agronomique (INRA)-Université de Pau et des Pays de l'Adour (UPPA) |
format |
Article in Journal/Newspaper |
author |
Launey, Sophie Brunet, Géraldine Guyomard, René, R. Davaine, Patrick |
author_facet |
Launey, Sophie Brunet, Géraldine Guyomard, René, R. Davaine, Patrick |
author_sort |
Launey, Sophie |
title |
Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands |
title_short |
Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands |
title_full |
Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands |
title_fullStr |
Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands |
title_full_unstemmed |
Role of Introduction History and Landscape in the Range Expansion of Brown Trout (Salmo trutta L.) in the Kerguelen Islands |
title_sort |
role of introduction history and landscape in the range expansion of brown trout (salmo trutta l.) in the kerguelen islands |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.inrae.fr/hal-02655643 https://doi.org/10.1093/jhered/esp130 |
geographic |
Kerguelen Kerguelen Islands |
geographic_facet |
Kerguelen Kerguelen Islands |
genre |
Kerguelen Islands |
genre_facet |
Kerguelen Islands |
op_source |
ISSN: 0022-1503 EISSN: 1471-8505 Journal of Heredity https://hal.inrae.fr/hal-02655643 Journal of Heredity, 2010, 101 (3), pp.270-283. ⟨10.1093/jhered/esp130⟩ http://jhered.oxfordjournals.org/ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/jhered/esp130 hal-02655643 https://hal.inrae.fr/hal-02655643 doi:10.1093/jhered/esp130 PRODINRA: 37844 WOS: 000276747000002 |
op_doi |
https://doi.org/10.1093/jhered/esp130 |
container_title |
Journal of Heredity |
container_volume |
101 |
container_issue |
3 |
container_start_page |
270 |
op_container_end_page |
283 |
_version_ |
1782336247219355648 |