Invasion history affects genetic structure in island rat populations
International audience Invasive species usually go through a period of reduced genetic variability due to a bottleneck. The genetic constitution of an invading population should therefore reflect the time since invasion and the number of introduction events. We studied genetic population structure o...
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ftunivavignon:oai:HAL:hal-01445183v1 2024-02-11T10:08:13+01:00 Invasion history affects genetic structure in island rat populations Theuerkauf, J. Kuehn, R. Gula, R. Sztencel-Jablonka, A. Jourdan, Herve Taugamoa, A. Labrousse, D. Bogdanowicz, W. Space Science and Engineering Center Madison (SSEC) University of Wisconsin-Madison Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) 2015-03 https://hal.science/hal-01445183 https://doi.org/10.1111/jzo.12206 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/jzo.12206 hal-01445183 https://hal.science/hal-01445183 doi:10.1111/jzo.12206 ISSN: 0952-8369 EISSN: 1469-7998 Journal of Zoology https://hal.science/hal-01445183 Journal of Zoology, 2015, 295 (3), pp.197--205. ⟨10.1111/jzo.12206⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2015 ftunivavignon https://doi.org/10.1111/jzo.12206 2024-01-23T23:42:35Z International audience Invasive species usually go through a period of reduced genetic variability due to a bottleneck. The genetic constitution of an invading population should therefore reflect the time since invasion and the number of introduction events. We studied genetic population structure of three rat species occurring sympatrically on the island of Futuna (46km(2)), where they were introduced recently (Rattus rattus), 80-170 years ago (R.norvegicus) and about 3000 years ago (R.exulans). From 2007 to 2012, we trapped 3900 rats during a rodent regulation programme over 20000 trap nights and took 565 rat tissue samples for genetic analyses. By examining genetic variation and spatial distribution of genetic resemblance, we evaluated the consequences of the time after introduction for genetic population structure. Observed heterozygosity, expected heterozygosity, number of alleles and allelic richness generally increased with increasing length of time a species was introduced to the island. The species with longer invasion history had also higher spatial admixture. However, in R.norvegicus, the observed heterozygosity was lower and inbreeding higher than expected by the invasion history. We relate this with the assumption that this species was introduced once or a few times and in low numbers, while R.exulans was intentionally introduced many times by Polynesian navigators and R.rattus had a high chance of being introduced on multiple occasions in recent times. Article in Journal/Newspaper Rattus rattus Université d'Avignon et des Pays de Vaucluse: HAL Journal of Zoology 295 3 197 205 |
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Open Polar |
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Université d'Avignon et des Pays de Vaucluse: HAL |
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ftunivavignon |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology Theuerkauf, J. Kuehn, R. Gula, R. Sztencel-Jablonka, A. Jourdan, Herve Taugamoa, A. Labrousse, D. Bogdanowicz, W. Invasion history affects genetic structure in island rat populations |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Invasive species usually go through a period of reduced genetic variability due to a bottleneck. The genetic constitution of an invading population should therefore reflect the time since invasion and the number of introduction events. We studied genetic population structure of three rat species occurring sympatrically on the island of Futuna (46km(2)), where they were introduced recently (Rattus rattus), 80-170 years ago (R.norvegicus) and about 3000 years ago (R.exulans). From 2007 to 2012, we trapped 3900 rats during a rodent regulation programme over 20000 trap nights and took 565 rat tissue samples for genetic analyses. By examining genetic variation and spatial distribution of genetic resemblance, we evaluated the consequences of the time after introduction for genetic population structure. Observed heterozygosity, expected heterozygosity, number of alleles and allelic richness generally increased with increasing length of time a species was introduced to the island. The species with longer invasion history had also higher spatial admixture. However, in R.norvegicus, the observed heterozygosity was lower and inbreeding higher than expected by the invasion history. We relate this with the assumption that this species was introduced once or a few times and in low numbers, while R.exulans was intentionally introduced many times by Polynesian navigators and R.rattus had a high chance of being introduced on multiple occasions in recent times. |
author2 |
Space Science and Engineering Center Madison (SSEC) University of Wisconsin-Madison Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Theuerkauf, J. Kuehn, R. Gula, R. Sztencel-Jablonka, A. Jourdan, Herve Taugamoa, A. Labrousse, D. Bogdanowicz, W. |
author_facet |
Theuerkauf, J. Kuehn, R. Gula, R. Sztencel-Jablonka, A. Jourdan, Herve Taugamoa, A. Labrousse, D. Bogdanowicz, W. |
author_sort |
Theuerkauf, J. |
title |
Invasion history affects genetic structure in island rat populations |
title_short |
Invasion history affects genetic structure in island rat populations |
title_full |
Invasion history affects genetic structure in island rat populations |
title_fullStr |
Invasion history affects genetic structure in island rat populations |
title_full_unstemmed |
Invasion history affects genetic structure in island rat populations |
title_sort |
invasion history affects genetic structure in island rat populations |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-01445183 https://doi.org/10.1111/jzo.12206 |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
ISSN: 0952-8369 EISSN: 1469-7998 Journal of Zoology https://hal.science/hal-01445183 Journal of Zoology, 2015, 295 (3), pp.197--205. ⟨10.1111/jzo.12206⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/jzo.12206 hal-01445183 https://hal.science/hal-01445183 doi:10.1111/jzo.12206 |
op_doi |
https://doi.org/10.1111/jzo.12206 |
container_title |
Journal of Zoology |
container_volume |
295 |
container_issue |
3 |
container_start_page |
197 |
op_container_end_page |
205 |
_version_ |
1790607246730723328 |