Fat Guam partula

Fat Guam partula
Conservation status
	; Critically Endangered (IUCN 2.3)
	; Endangered (ESA)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Partulidae
Genus:	Partula
Species:	P. gibba
Binomial name
	Partula gibba; Férussac, 1821
Synonyms
	Partula bicolor Pease, 1872; Partula mastersi L. Pfeiffer, 1853;

The fat Guam partula or humped tree snail, scientific name Partula gibba, is an endangered species of air-breathing land snail, a terrestrial gastropod mollusk in the family Partulidae.

Distribution

This species occurs throughout the Mariana Archipelago, and has been reported in the greatest densities and population sizes on the isle of Sarigan.^[4]

Ecology

On Sarigan, the species has been recorded most frequently in high-elevation native forests on the trunks of large Erythrina variegata specimens, often resting at the base of branches. On 19 May 2015 specimens were found consuming the Pandanus-fruit ejecta of the Mariana fruit bat on the leaves of a Pandanus tectorius tree. Mariana partulids have been noted to consume plant material, both living and decaying.^[4]^[5]

References

^ Mollusc Specialist Group (1996). "Partula gibba". IUCN Red List of Threatened Species. 1996: e.T16274A5595102. doi:10.2305/IUCN.UK.1996.RLTS.T16274A5595102.en. Retrieved 15 November 2021.
^ "Humped tree snail (Partula gibba)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 21 April 2023.
^ 80 FR 59424
^ ^a ^b Berry, Lainie (January 2016). "Partula gibba feeding on Mariana fruit bat ejecta of Pandanus sp. fruit on Sarigan, Northern Mariana Islands" (PDF). Micronesica. 1: 1–4.
^ Perez, Kathryn E. (February 2010). "Current Research on Land Snails and Land Snail Conservation: Leslie Hubricht Memorial Symposium on Terrestrial Gastropods". American Malacological Bulletin. 28 (1–2): 13–14. doi:10.4003/006.028.0206. ISSN 0740-2783. S2CID 85018835.

Férussac A. E. J. (1821-1822). Tableaux systématiques des animaux mollusques suivis d'un Prodrome général pour tous les mollusques terrestres ou fluviatiles vivants ou fossilesPremière partie, Tableaux systématiques généraux, pp. i-xlvii. Deuxième partie, Tableaux particuliers des mollusques terrestres et fluviatiles, Classe des Gastéropodes. 1, Tableau de la famille des limaces, pp. 1–28. 2, Tableau de la famille des limaçons, pp. 1–92. 3, Tableau de la famille des auricules, pp. 93–114. [for details of dates of publication see Kennard A.S., 1942, Proceedings of the Malacological Society of London 25(3): 105-110]. Paris: Arthus-Bertrand. page(s): 66