Eradication and Ecosystem Impacts of Rats in the Ogasawara Islands

摘要: Alien rat species have severe negative impacts on ecosystems in many regions, including the Ogasawara Islands. In some cases urgent countermeasures are required, for example, when predation by rats endangers populations of seabirds breeding uninhabited islands. Some countries, notably New Zealand, had success eradicating from islands using rodenticides. 2007, we attempted to eradicate black Rattus rattus Nishijima, We achieved almost complete eradication bait stations and diphacinone as a roden-ticide; were also able minimize risks non-target animals secondary poisoning events. Rodenticide has been broadcast aerially Mukojima Higashijima, still monitoring progress this program. will attempt more alien Islands considering geographical factors, operating conditions, animals.