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Gyraulus (Gyraulus)chinensis (Dunker, 1848)

Diagnostic features

The shell has a peripheral angulation (not a keel), and spiral sculpture is weak or lacking. Distinguished from all other Australian Gyraulus by the blotchy pigmentation of the mantle.

Classification

Gyraulus (Gyraulus)chinensis (Dunker, 1848)

Class Gastropoda

Subclass Heterobranchia

Order Hygrophila

Superfamily Planorboidea

Family Planorbidae

Genus Gyraulus Charpentier, 1837

Original name: Planorbis chinensis Dunker, 1848. Dunker, G. (1848). Diagnoses specierum novarum generis Planorbis collectionis Cumingianae. Proceedings of the Zoological Society of London 1848: 40-43.

Type locality: Hong Kong.

Biology and ecology

An invasive species in western Europe and Guinea Bissau in West Africa, Pond dweller from a locality in South Australia. This is the only species of Gyraulus found in Australia with blotchy mantle pigmentation.

Brown (2001) described the anatomy of this species.

Distribution

This Asian species is known from a single locality near Mt. Gambier in South Australia. It is native in E and S Asia.

Notes

This Asian species is also established in parts of Europe and the UK.

Further reading

Brown, D. S. (1981). Observations on the Planorbidae from Australia and New Guinea. Journal of the Malacological Society of Australia 5: 67-80.

Brown, D. S. (1998). Freshwater snails of the genus Gyraulus (Gastropoda: Planorbidae) in Australia: the taxa of Tasmania. Molluscan Research 19: 105-154.

Brown, D. S. (2001). Freshwater snails of the genus Gyraulus (Planorbidae) in Australia: taxa of the mainland. Molluscan Research 21: 17-107.

Hubendick, B. (1955). Phylogeny of the Planorbidae. Transactions of the Zoological Society of London 28: 453-542.

Ng, T.H., Tan, S.K., Wong, W.H., Meier, R., Chan, S-Y., Tan, H.H. and Yeo, D.C.J. 2016. Molluscs for Sale: Assessment of Freshwater Gastropods and Bivalves in the Ornamental Pet Trade. PLOS One. DOI:10.1371/journal.pone.0161130.