Les invertébrés introduits dans l’archipel néo-calédonien : espèces envahissantes et potentiellement envahissantes. Première évaluation et recommandations pour leur gestion

Jourdan, Hervé; Mille, Christian

doi:10.4000/books.irdeditions.7672

Cited by 10 publications

(16 citation statements)

References 18 publications

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“…Two species of highly invasive ants were recorded from scattered sites along the plateau, the Yellow Crazy Ant Anoplolepis gracilipes (Jerdon) and Little Red Fire Ant Wasmannia auropunctata (Roger). Another invasive ant Solenopsis geminata (Fabricius) is also known from previous visits on Walpole island (Jourdan and Mille 2006), but was not recorded during our survey, being associated with cliffs and open littoral areas, habitats not investigated in 2013. Wasmannia auropunctata has been identified as a serious environmental threat in the region (Jourdan 1997;Jourdan and Mille 2006), and has been demonstrated to have a negative impact on lizard population abundance in dry forest habitat (Jourdan et al 2001) in New Caledonia.…”

Section: Discussionmentioning

confidence: 78%

“…Another invasive ant Solenopsis geminata (Fabricius) is also known from previous visits on Walpole island (Jourdan and Mille 2006), but was not recorded during our survey, being associated with cliffs and open littoral areas, habitats not investigated in 2013. Wasmannia auropunctata has been identified as a serious environmental threat in the region (Jourdan 1997;Jourdan and Mille 2006), and has been demonstrated to have a negative impact on lizard population abundance in dry forest habitat (Jourdan et al 2001) in New Caledonia. Booms in populations of Anoplolepis gracilipes have been flagged as a contributing factor in the crashes (and possible extinction) of lizard populations on Christmas Island in the Indian Ocean (Smith et al 2012).…”

Section: Discussionmentioning

confidence: 78%

“…The threats posed by these ants are complex (Jourdan et al 2001(Jourdan et al , 2015Le Breton et al 2003;Gasc et al 2018), but likely include the physical displacement lizards from sheltering and foraging sites by the presence of large numbers of ants during boom periods, and indirectly from loss and changes in composition of the invertebrate fauna that constitute a major part of the diet of lizards. On Walpole, Wasmannia auropunctata appears to have only been present for 20-30 years (Jourdan and Mille 2006), but the 2013 survey showed there to be an ongoing spread of this ant across all the habitats on the island. Although adult Epibator insularis n. sp.…”

Section: Discussionmentioning

confidence: 99%

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Epibator insularis, a New Species of Scincid Lizard from l'Île Walpole, New Caledonia

et al. 2019

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A new species of skink in the genus Epibator is described from Île Walpole, a small, isolated, raised vegetated limestone platform, ∼200 km ESE of southern New Caledonia. The new species is distinguished from its congeners Epibator nigrofasciolatus and E. greeri primarily by its coloration and pattern (both species), differences in scalation (greeri), and substantial genetic differentiation (nigrofasciolatus). The new species is the only extant endemic terrestrial vertebrate on Walpole. The island is small (<1.7 km 2), and has a long history of past human occupation (over the last 2,500 years, including European-era exploitation for guano), resulting in degradation of the vegetation cover and introduction of invasive animal species, most significantly ants (Little Fire Ant, Yellow Crazy Ant) and rats (Pacific Rat). The species' very limited distribution in combination with the threats posed by invasive species place it at a level of risk sufficient to be considered as Critically Endangered under IUCN Red List criteria.

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

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Epibator insularis, a New Species of Scincid Lizard from l'Île Walpole, New Caledonia

et al. 2019

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“…New Caledonian Odonata have been considered in several other investigations, which can be grouped as follows: a) species checklists for French overseas departments and territories (Dommanget 2000;Dommanget & Mashaal 2000Meurgey 2004;Grand 2006); b) taxonomic and phylogenetic studies (Kalkman et al 2010a, b;Kalkman & Theischinger 2013;Dijkstra et al 2014), c) general overviews for conservation purposes (Rowe 2004;Grand 2005); d) museum and private collections (Voisin 2001;Papazian 2002); e) hydrobiological studies (Mary 1999(Mary , 2002(Mary , 2017Pöllabauer et al 2005); f) studies on invertebrates that include Odonata (Bigot 1985;Jourdan & Mille 2006); g) studies over larger regions that encompass New Caledonia (Lieftinck 1959;Starmühlner 1986); h) general species distribution (Endersby 2002), and i) a bibliography checklist (Chazeau 1995). However, some of these publications should be treated with caution considering their use of nomenclature and the unknown accuracy of their identifications.…”

Section: Resultsmentioning

confidence: 99%

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2019

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Compared to other archipelagos of the Pacific, the New Caledonian Odonata fauna is rich and diverse with 56 valid species or subspecies (23 endemics, 41%) from eight families (four Zygoptera: Argiolestidae, Coenagrionidae, Isostictidae, Lestidae, and four Anisoptera: Aeshnidae, Corduliidae, Synthemistidae, Libellulidae) and 31 genera (including four endemics, 13%). In Zygoptera, we record 19 species including 12 endemics (63%), and among Anisoptera, we record 37 species or subspecies, including 11 endemics (30%). we removed five species from the list that had been erroneously recorded also doubtful, but we were unable to clarify to which taxon this record referred hence we excluded it from our update. From a biogeographic perspective, the New Caledonian fauna has mostly Australian affinities with some connections with southeast Asia and the Pacific region. we provide for each species, whenever information was available, a distribution map with a brief review of its known ecology, behaviour and phenology. we also evaluated each species' conservation status, in light of known threats (range restriction, scarcity and human activity including altered water flow). we consider seventeen species (30%) endangered. The most immediate threats concern water pollution including alteration to the flow of water courses caused by mining, deforestation and fires. Invasive species, such as alien fish, may be predators of concern for odonata larva, although this has not yet been proven in New Caledonia. RésuméPar rapport aux autres archipels du Pacifique, la faune des Odonates de Nouvelle-Calédonie est riche et diversifiée avec 56 espèces ou sous-espèces valides (23 espèces endémiques, 41 %) de huit familles (quatre de Zygoptères: Argiolestidae, Coenagrionidae, Isostictidae, Lestidae et quatre d'Anisoptères: Aeshnidae, Corduliidae, Synthemistidae, Libellulidae) et 31 genres (dont quatre endémiques, 13 %). Parmi les Zygoptères, nous comptons 19 taxa dont 12 endémiques (63%). Parmi les Anisoptères, nous comptons 37 espèces ou sous-espèces, dont 11 endémiques (30%). Nous avons retiré 5 espèces de la liste faunistique de Nouvelle-Calédonie, celles-ci ayant été attribuées de façon erronée à l'archipel:

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“…These alien species movements are of concern especially for island countries where biodiversity issues are high, such as New Caledonia, which is recognized as a world biodiversity hotspot (Myers et al 2000;Grandcolas et al 2008;Mille et al 2012). As already pointed out in the context of New Caledonia, these exotic species can bring major imbalance in both eco-and agro-systems (Beauvais et al 2006;Jourdan and Mille 2006;Jourdan and Loope 2006). The spread of insect pests is increasingly recorded more accurately in the context of international trade agreements and associated phytosanitary regulations, but records that document the spread of BCAs are much scarcer and should be regarded as 'good news'.…”

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Recent spread of the Sida Leafbeetle, Calligrapha pantherina Stål, 1859 (Coleoptera: Chrysomelidae: Chrysomelinae) in New Caledonia

Mille¹,

Rigault²,

Cazères³

et al. 2016

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We report the recent arrival and subsequent spread of the Sida Leafbeetle, Calligrapha pantherina Stål, 1859, in the archipelago of New Caledonia. The species seems to have a rapid spread as it is now recorded all along the west coast and also have spread to the Loyalty Islands. The first specimen was caught in November 2012. This is a biocontrol agent which was introduced in the Pacific Region against invasive Malvaceae (Sida spp.). This accidental arrival would help to control the alien weed, Sida acuta Burm. f., in New Caledonia. But this establishment raises some questions about potential threats on the two endemic New Caledonian Sida species. We also discuss this arrival and subsequent installation in the context of global change and biosecurity issues, particularly in such a biodiversity hotspot.

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Les invertébrés introduits dans l’archipel néo-calédonien : espèces envahissantes et potentiellement envahissantes. Première évaluation et recommandations pour leur gestion

Cited by 10 publications

References 18 publications

Epibator insularis, a New Species of Scincid Lizard from l'Île Walpole, New Caledonia

Epibator insularis, a New Species of Scincid Lizard from l'Île Walpole, New Caledonia

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Recent spread of the Sida Leafbeetle, Calligrapha pantherina Stål, 1859 (Coleoptera: Chrysomelidae: Chrysomelinae) in New Caledonia

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