The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot
International audience Squamata are one of the most threatened groups among island vertebrates, facing high pressure from exotic species. However, the contribution of small terrestrial reptiles in invasive rodents' diet remains poorly investigated, partly because of the lack of tools for accura...
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2018
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Online Access: | https://doi.org/10.1371/journal.pone.0192249 https://hal.archives-ouvertes.fr/hal-01793845/file/journal.pone.0192249.pdf https://hal.archives-ouvertes.fr/hal-01793845 |
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fttriple:oai:gotriple.eu:10670/1.e40kd5 2023-05-15T18:05:06+02:00 The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot Thibault, Martin VIDAL, Eric Potter, Murray Alan Sanchez, Thierry Brescia, Fabrice Université du Québec en Outaouais (UQO) Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement IRD : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU) Institut Agronomique Néo-Calédonien (IAC) 2018-02-01 https://doi.org/10.1371/journal.pone.0192249 https://hal.archives-ouvertes.fr/hal-01793845/file/journal.pone.0192249.pdf https://hal.archives-ouvertes.fr/hal-01793845 en eng HAL CCSD Public Library of Science hal-01793845 doi:10.1371/journal.pone.0192249 IRD: fdi:010072073 10670/1.e40kd5 https://hal.archives-ouvertes.fr/hal-01793845/file/journal.pone.0192249.pdf https://hal.archives-ouvertes.fr/hal-01793845 lic_creative-commons Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE PLoS ONE, Public Library of Science, 2018, 13 (2), ⟨10.1371/journal.pone.0192249⟩ island conservation Rattus rattus diet analysis endemic skinks Rattus exulans envir socio Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.1371/journal.pone.0192249 2023-01-22T17:27:19Z International audience Squamata are one of the most threatened groups among island vertebrates, facing high pressure from exotic species. However, the contribution of small terrestrial reptiles in invasive rodents' diet remains poorly investigated, partly because of the lack of tools for accurately identifying chewed prey fragments in gut contents. The New Caledonia archipelago (South Pacific) hosts an exceptional terrestrial squamata fauna (105 species, 91.6% endemic) that are faced with many invasive species (rodents, feral cats, feral pigs, ants) and strong human pressures. Our study aimed to evaluate the frequency of occurrence of endemic skink remains by gut content analysis of two species of invasive rodents. Four rodent trapping sessions were implemented at two ultramafic sites and for two distinct habitats (closed canopy forest and open shrubland habitat). A total of 284 rats were trapped from two species (the ship rat Rattus rattus and the Pacific rat R. exulans) over 1200 trap nights. Combined analysis of stomach and caecum contents provided far more information than traditional stomach analysis alone. Analyses showed that 15.9% of rat samples included remains of at least 12 different skink species out of the 23 present. Six species are classified as threatened by the IUCN, the most endangered being Marmorosphax taom (CR) and Kanakysaurus viviparus (EN). This study provides new prospects for the assessment of invasive rodent impacts and new insights into the respective impacts of two sympatric invasive rodent species on native skinks. Article in Journal/Newspaper Rattus rattus Unknown Pacific PLOS ONE 13 2 e0192249 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
island conservation Rattus rattus diet analysis endemic skinks Rattus exulans envir socio |
spellingShingle |
island conservation Rattus rattus diet analysis endemic skinks Rattus exulans envir socio Thibault, Martin VIDAL, Eric Potter, Murray Alan Sanchez, Thierry Brescia, Fabrice The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
topic_facet |
island conservation Rattus rattus diet analysis endemic skinks Rattus exulans envir socio |
description |
International audience Squamata are one of the most threatened groups among island vertebrates, facing high pressure from exotic species. However, the contribution of small terrestrial reptiles in invasive rodents' diet remains poorly investigated, partly because of the lack of tools for accurately identifying chewed prey fragments in gut contents. The New Caledonia archipelago (South Pacific) hosts an exceptional terrestrial squamata fauna (105 species, 91.6% endemic) that are faced with many invasive species (rodents, feral cats, feral pigs, ants) and strong human pressures. Our study aimed to evaluate the frequency of occurrence of endemic skink remains by gut content analysis of two species of invasive rodents. Four rodent trapping sessions were implemented at two ultramafic sites and for two distinct habitats (closed canopy forest and open shrubland habitat). A total of 284 rats were trapped from two species (the ship rat Rattus rattus and the Pacific rat R. exulans) over 1200 trap nights. Combined analysis of stomach and caecum contents provided far more information than traditional stomach analysis alone. Analyses showed that 15.9% of rat samples included remains of at least 12 different skink species out of the 23 present. Six species are classified as threatened by the IUCN, the most endangered being Marmorosphax taom (CR) and Kanakysaurus viviparus (EN). This study provides new prospects for the assessment of invasive rodent impacts and new insights into the respective impacts of two sympatric invasive rodent species on native skinks. |
author2 |
Université du Québec en Outaouais (UQO) Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement IRD : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU) Institut Agronomique Néo-Calédonien (IAC) |
format |
Article in Journal/Newspaper |
author |
Thibault, Martin VIDAL, Eric Potter, Murray Alan Sanchez, Thierry Brescia, Fabrice |
author_facet |
Thibault, Martin VIDAL, Eric Potter, Murray Alan Sanchez, Thierry Brescia, Fabrice |
author_sort |
Thibault, Martin |
title |
The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
title_short |
The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
title_full |
The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
title_fullStr |
The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
title_full_unstemmed |
The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
title_sort |
invasive red-vented bulbul (pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://doi.org/10.1371/journal.pone.0192249 https://hal.archives-ouvertes.fr/hal-01793845/file/journal.pone.0192249.pdf https://hal.archives-ouvertes.fr/hal-01793845 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE PLoS ONE, Public Library of Science, 2018, 13 (2), ⟨10.1371/journal.pone.0192249⟩ |
op_relation |
hal-01793845 doi:10.1371/journal.pone.0192249 IRD: fdi:010072073 10670/1.e40kd5 https://hal.archives-ouvertes.fr/hal-01793845/file/journal.pone.0192249.pdf https://hal.archives-ouvertes.fr/hal-01793845 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.1371/journal.pone.0192249 |
container_title |
PLOS ONE |
container_volume |
13 |
container_issue |
2 |
container_start_page |
e0192249 |
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