Species Information

Moussonia fuscula

Species Authority

(Mousson, 1870)

Species Status

Near Threatened

Organism Type

Mollusc

Taxonomy

Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Architaenioglossa
Family: Diplommatinidae

Environment/System

terrestrial

Invasive Species Threat Summary

This Near Threatened endemic forest snail is known from twelve islands in Fiji where it is threatened by invasive introduced species and human disturbance. Over a large part of the species' range (notably on Lakeba, Oneata, Namuka-i-Lau, but also other human-inhabited islands) forest habitat is subject to ongoing loss and degradation through the influence of shifting subsistence agriculture, harvesting of wood and invasive species. Pacific rat (Rattus exulans) and black rat (Rattus rattus) are established throughout the species' range. These animals, coupled with domestic fowl (Gallus gallus), pigs (Sus scrofa), cattle (Bos taurus), horses (Equus caballus) and goats (Capra hircus) on Aiwa are likely threats to this snail though disturbance of the microhabitat of the forest floor and/or predation. Other invasive species of concern are predatory ants including forest parrot ants (Paratrechina vaga), crazy ants (Paratrechina longicornis), predatory ghost ants (Tapinoma melanocephalum), pennant ants (Tetramorium bicarinatum) and yellow crazy ants (Anoplolepis gracilipes) (Solem 1990; Ward & Wetterer 2006).

Invasive Species Management Summary

Surveys to determine the current distribution and population status of this snail are recommended and research is needed to explore options for indigenous snail site/habitat protection. Continued biosecurity measures are critical to prevent the giant African snail (Achatina fulica), predatory rosy wolf snail (a href=http://www.issg.org/database/species/ecology.asp?si=92&fr=1&sts=&lang=EN>Euglandina rosea) and predatory flatworm (Platydemus manokwari) from establishing in Fiji. The giant African has the potential to displace indigenous land snails and has recently been shown to have predatory behaviour (Meyer et al. 2008). The predatory rosy wolf snail is used as a biological control against the giant African snail with resulting devastating consequences for indigenous land snail prey species (Cowie 2001, Barker and Efford 2004).

References

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CountryLocationTypeInvasive SpeciesCommon NameImpact Mechanism
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FijiAiwa LevuIslandPolynesian ratPredation (potential)
FijiAiwa LevuIslanddomestic goatGrazing/Herbivory/Browsing (potential)
FijiAiwa LevuIslandblack ratPredation (potential)
FijiAiwa LevuIslandferal pigPredation (potential)
FijiAiwa LevuIslandHorseTrampling (potential)
FijiAiwa LevuIslandRed JunglefowlHabitat alteration (potential)
FijiAiwa LevuIslandred junglefowlHabitat alteration (potential)
FijiAiwa LevuIslandCattleGrazing/Herbivory/Browsing (potential)
FijiFijiCountryGuinea antOther-physical disturbance (potential)
FijiFijiCountryYellow crazy antPredation (potential)

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An Initiative of the ACP Group, funded by the European Union under the 10th EDF