Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands
International audience In a context of global change, biological invasions are one of the main causes of biodiversity loss. Non-native species can disperse naturally but the rate of dispersion has increased during the last decades through anthropogenic and natural introductions. In both cases, orga...
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ftunivnantes:oai:HAL:hal-02154572v1 2023-05-15T13:59:06+02:00 Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands Aulus Giacosa, Lucie Gaudin, Philippe Vignon, Matthias 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) Rennes, France 2018-10-22 https://hal.archives-ouvertes.fr/hal-02154572 en eng HAL CCSD hal-02154572 https://hal.archives-ouvertes.fr/hal-02154572 PRODINRA: 471656 Colloque du GDR Invasions Biologiques https://hal.archives-ouvertes.fr/hal-02154572 Colloque du GDR Invasions Biologiques, Oct 2018, Rennes, France sea trout introduced species salmo trutta espèce introduite trait de vie évolution spatiotemporelle kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/conferenceObject Conference papers 2018 ftunivnantes 2022-11-16T01:27:12Z International audience In a context of global change, biological invasions are one of the main causes of biodiversity loss. Non-native species can disperse naturally but the rate of dispersion has increased during the last decades through anthropogenic and natural introductions. In both cases, organisms can adapt or move to be resilient to the global warming, leading to the colonization of new habitat. The study of colonization is of major interest to manage appropriately their invasiveness, to understand their response to global warming and to conserve natural biodiversity.As a consequence of ice retreat in the highest latitude, newly opened rivers could become welcoming habitats for the establishment of colonizing fish. Thus, temperate species will be expected to move to higher latitudes. Salmonids are thought to be good candidates for colonizing such environments since they generally display intrinsic ability to become invasive.Because of its unique characteristics, invasion by the Brown trout (Salmo trutta L.) in sub-Antarctic Kerguelen Islands represents a good model to improve our knowledge in fish population dynamics in a post-glacial invasion context. This facultative anadromous iteroparous species shows various life history strategies patterns and is characterized by high phenotypic plasticity where migration plays a significant role in the spatial dynamics of populations. Introduced in the 1950s in a dozen freshwater systems originally deprived of any fish species, the species colonized more than thirty streams in only ten generations. Thanks to longterm monitoring, our data would shed light on the future of polar regions where,because of ice melting, fishfree ecosystems become increasingly accessible to invasion by fish species Conference Object Antarc* Antarctic Kerguelen Islands Université de Nantes: HAL-UNIV-NANTES Antarctic Kerguelen Kerguelen Islands |
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Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
sea trout introduced species salmo trutta espèce introduite trait de vie évolution spatiotemporelle kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
sea trout introduced species salmo trutta espèce introduite trait de vie évolution spatiotemporelle kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology Aulus Giacosa, Lucie Gaudin, Philippe Vignon, Matthias Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands |
topic_facet |
sea trout introduced species salmo trutta espèce introduite trait de vie évolution spatiotemporelle kerguelen [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience In a context of global change, biological invasions are one of the main causes of biodiversity loss. Non-native species can disperse naturally but the rate of dispersion has increased during the last decades through anthropogenic and natural introductions. In both cases, organisms can adapt or move to be resilient to the global warming, leading to the colonization of new habitat. The study of colonization is of major interest to manage appropriately their invasiveness, to understand their response to global warming and to conserve natural biodiversity.As a consequence of ice retreat in the highest latitude, newly opened rivers could become welcoming habitats for the establishment of colonizing fish. Thus, temperate species will be expected to move to higher latitudes. Salmonids are thought to be good candidates for colonizing such environments since they generally display intrinsic ability to become invasive.Because of its unique characteristics, invasion by the Brown trout (Salmo trutta L.) in sub-Antarctic Kerguelen Islands represents a good model to improve our knowledge in fish population dynamics in a post-glacial invasion context. This facultative anadromous iteroparous species shows various life history strategies patterns and is characterized by high phenotypic plasticity where migration plays a significant role in the spatial dynamics of populations. Introduced in the 1950s in a dozen freshwater systems originally deprived of any fish species, the species colonized more than thirty streams in only ten generations. Thanks to longterm monitoring, our data would shed light on the future of polar regions where,because of ice melting, fishfree ecosystems become increasingly accessible to invasion by fish species |
author2 |
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 |
Conference Object |
author |
Aulus Giacosa, Lucie Gaudin, Philippe Vignon, Matthias |
author_facet |
Aulus Giacosa, Lucie Gaudin, Philippe Vignon, Matthias |
author_sort |
Aulus Giacosa, Lucie |
title |
Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands |
title_short |
Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands |
title_full |
Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands |
title_fullStr |
Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands |
title_full_unstemmed |
Long-term evolution of anadromy in the introduced brown trout (Salmo truttaL.) and its impact on invasion dynamics in the Kerguelen Islands |
title_sort |
long-term evolution of anadromy in the introduced brown trout (salmo truttal.) and its impact on invasion dynamics in the kerguelen islands |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-02154572 |
op_coverage |
Rennes, France |
geographic |
Antarctic Kerguelen Kerguelen Islands |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands |
genre |
Antarc* Antarctic Kerguelen Islands |
genre_facet |
Antarc* Antarctic Kerguelen Islands |
op_source |
Colloque du GDR Invasions Biologiques https://hal.archives-ouvertes.fr/hal-02154572 Colloque du GDR Invasions Biologiques, Oct 2018, Rennes, France |
op_relation |
hal-02154572 https://hal.archives-ouvertes.fr/hal-02154572 PRODINRA: 471656 |
_version_ |
1766267479987847168 |