Pitcairn Islands

There is no specific legislation regarding invasive species in the Pitcairn Islands.

The JNCC database contains 276 introduced species for the Pitcairn Island Group. This includes over 250 plant species, 11 invertebrates and 10 vertebrates.

Problems with invasive non-native species

Pacific rats (Rattus exulans) are regarded as a major threat, particularly to breeding birds although they may also be implicated in the extinction of some land snail species. In 1997 rats were eradicated from Ducie and Oeno. Introduced invasive plant species such as Rose-apple (Syzgium jambos), (Lantana camara) and (Passisflora maliformis) are posing a threat to endemic plant species some of which have a limited range and low numbers.

Two fruit flies (the Queensland fruit fly (Bactrocera tryoni) and a Mediterranean fruit fly (Ceratitis capitata) damage fruit trees.

Priority invasive non-native species and actions

Although rats have been eradicated from Ducie and Oeno there is a continuing threat of reintroduction from Pitcairn Island where two eradication attempts have failed. Eradication of rats on Henderson Island is currently underway. Baiting of the island with rat poison took place during 2011 but follow up monitoring indicates that this has not been successful. Future efforts will also look at improving biosecurity in order to prevent introduction of rats from elsewhere.

An introduced fruit fly (Ceratitis capitata) that is a pest of Citrus is subject to management through the annual issue of insect pheromone traps by the Conservation Officer. The aim is to reduce the number of male fruit flies available for breeding.


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