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La liste préventive des espèces exotiques envahissantes de Wallis et Futuna a été créée en 2024 par une révision de la règlementation, à la suite d'une prestation d’une biologiste, et de la consultation d’associations et de services du territoire. Elle répertorie 123 espèces absentes du territoire mais présentes dans la région et dont Wallis et Futuna entend se préserver. Le document compile des fiches techniques de reconnaissance et de gestion des 123 espèces figurant sur la liste préventive, relatives aux milieux terrestres, humides et de rivières et marins. Le document détaille également les 6 étapes du plan d'intervention rapide élaboré pour répondre aux introductions d'espèces exotiques envahissantes à Wallis et Futuna : (i) réceptionner le signalement, et collecter les informations; (ii) confirmer l'identification de l'espèce; (iii) améliorer la connaissance sur la répartition de l'espèce; (iv) évaluer la situation et choisir l'option de gestion; (v) élaborer et mettre en place un plan d'intervention et (vi) veiller.

Rodents remain one of the most widespread and damaging invasive alien species on islands globally. The current toolbox for insular rodent eradications is reliant on the application of sufficient anticoagulant toxicant into every potential rodent territory across an island. Despite significant advances in the use of these toxicants over recent decades, numerous situations remain where eradication is challenging or not yet feasible. These include islands with significant human populations, unreceptive stakeholder communities, co-occurrence of livestock and domestic animals, or vulnerability of native species. Developments in diverse branches of science, particularly the medical, pharmaceutical, invertebrate pest control, social science, technology and defense fields offer potential insights into the next generation of tools to eradicate rodents from islands. Horizon scanning is a structured process whereby current problems are assessed against potential future solutions. We undertook such an exercise to identify the most promising technologies, techniques and approaches that might be applied to rodent eradications from islands. We highlight a Rattus-specific toxicant, RNA interference as species-specific toxicants, rodenticide research, crab deterrent in baits, prophylactic treatment for protection of non-target species, transgenic rodents, virus vectored immunocontraception, drones, self-resetting traps and toxicant applicators, detection probability models and improved stakeholder community engagement methods. We present a brief description of each method, and discuss its application to rodent eradication on islands, knowledge gaps, challenges, whether it is incremental or transformative in nature and provide a potential timeline for availability. We outline how a combination of new tools may render previously intractable rodent eradication problems feasible.

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