The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species

The terrestrial arthropod fauna of Rapa Nui has been negatively impacted by human activities, including accidental and purposeful species introductions, which have led to high levels of extinction and extirpation of the native fauna. Unfortunately, the absence of a single, standardized resource docu...

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Main Authors: J. Judson Wynne, Francis G. Howarth, Darko D. Cotoras, Sergio Rothmann, Sergio Ríos, Carolina Valdez, Pedro Lazo Hucke, Cristian Villagra, Luis Flores-Prado
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Global Ecology and Conservation
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Online Access:http://www.sciencedirect.com/science/article/pii/S2351989424004840
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author J. Judson Wynne
Francis G. Howarth
Darko D. Cotoras
Sergio Rothmann
Sergio Ríos
Carolina Valdez
Pedro Lazo Hucke
Cristian Villagra
Luis Flores-Prado
author_facet J. Judson Wynne
Francis G. Howarth
Darko D. Cotoras
Sergio Rothmann
Sergio Ríos
Carolina Valdez
Pedro Lazo Hucke
Cristian Villagra
Luis Flores-Prado
author_sort J. Judson Wynne
collection DOAJ
description The terrestrial arthropod fauna of Rapa Nui has been negatively impacted by human activities, including accidental and purposeful species introductions, which have led to high levels of extinction and extirpation of the native fauna. Unfortunately, the absence of a single, standardized resource documenting all Rapa Nui’s native and non-native species hinders protecting surviving native species, as well as recognizing new invasions. Here, we present a comprehensive list of terrestrial arthropod species recorded up to 2024. We compiled this list from the literature, unpublished museum records, and field sampling. We also consulted 29 taxonomic specialists, who assisted in verifying species in this checklist. A total of 539 arthropod species were cataloged including 25 endemic, 27 indigenous, 345 accidentally introduced, and 66 purposefully introduced species, and 76 species of unknown origin. Most, if not all, of the unknown records represent non-native species. Eleven endemic and 14 indigenous species have not been recorded since their original description, which suggests their extinction or extirpation. However, the lack of targeted surveys prevents verification of their persistence on the island. For non-native species, one-third (33 %) have cosmopolitan or nearly cosmopolitan distributions, while 31 % originated from the tropics. Overall, this checklist will serve as a comprehensive resource for the identification of established species and facilitate the detection of new arrivals. It will also contribute to the protection of the island’s surviving native species.
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spelling doaj-art-5efc3ac3111245049dd943d4ddb696992025-01-23T05:26:51ZengElsevierGlobal Ecology and Conservation2351-98942025-01-0157e03280The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native speciesJ. Judson Wynne0Francis G. Howarth1Darko D. Cotoras2Sergio Rothmann3Sergio Ríos4Carolina Valdez5Pedro Lazo Hucke6Cristian Villagra7Luis Flores-Prado8Department of Biological Sciences and Center for Adaptable Western Landscapes, Northern Arizona University, Flagstaff, USA; Correspondence to: Department of Biological Sciences, Northern Arizona University, Flagstaff, USA.Department of Natural Sciences, Bishop Museum, Honolulu, Hawaii, USADepartment of Terrestrial Zoology, Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany; Department of Entomology, California Academy of Sciences, San Francisco, CA, USAServicio Agrícola y Ganadero, Lo Aguirre Office, Talagante, ChileServicio Agrícola y Ganadero, Rapa Nui Office, Easter Island, ChileServicio Agrícola y Ganadero, Quilpué Office, Quilpué, ChileCONAF, Rapa Nui Office, Easter Island, ChileInstituto de Entomología, Universidad Metropolitana de Ciencias de la Educación, Santiago, ChileInstituto de Entomología, Universidad Metropolitana de Ciencias de la Educación, Santiago, ChileThe terrestrial arthropod fauna of Rapa Nui has been negatively impacted by human activities, including accidental and purposeful species introductions, which have led to high levels of extinction and extirpation of the native fauna. Unfortunately, the absence of a single, standardized resource documenting all Rapa Nui’s native and non-native species hinders protecting surviving native species, as well as recognizing new invasions. Here, we present a comprehensive list of terrestrial arthropod species recorded up to 2024. We compiled this list from the literature, unpublished museum records, and field sampling. We also consulted 29 taxonomic specialists, who assisted in verifying species in this checklist. A total of 539 arthropod species were cataloged including 25 endemic, 27 indigenous, 345 accidentally introduced, and 66 purposefully introduced species, and 76 species of unknown origin. Most, if not all, of the unknown records represent non-native species. Eleven endemic and 14 indigenous species have not been recorded since their original description, which suggests their extinction or extirpation. However, the lack of targeted surveys prevents verification of their persistence on the island. For non-native species, one-third (33 %) have cosmopolitan or nearly cosmopolitan distributions, while 31 % originated from the tropics. Overall, this checklist will serve as a comprehensive resource for the identification of established species and facilitate the detection of new arrivals. It will also contribute to the protection of the island’s surviving native species.http://www.sciencedirect.com/science/article/pii/S2351989424004840Alien invasive speciesAnthropogenic impactsBiodiversity lossRelict species
spellingShingle J. Judson Wynne
Francis G. Howarth
Darko D. Cotoras
Sergio Rothmann
Sergio Ríos
Carolina Valdez
Pedro Lazo Hucke
Cristian Villagra
Luis Flores-Prado
The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species
Global Ecology and Conservation
Alien invasive species
Anthropogenic impacts
Biodiversity loss
Relict species
title The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species
title_full The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species
title_fullStr The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species
title_full_unstemmed The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species
title_short The terrestrial arthropods of Rapa Nui: A fauna dominated by non-native species
title_sort terrestrial arthropods of rapa nui a fauna dominated by non native species
topic Alien invasive species
Anthropogenic impacts
Biodiversity loss
Relict species
url http://www.sciencedirect.com/science/article/pii/S2351989424004840
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