Parafossarulus manchouricus

Parafossarulus manchouricus is a species of freshwater snail with gills and an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae.

Parafossarulus manchouricus
Drawing of an apertural view of the shell of Parafossarulus manchouricus.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Bithyniidae
Genus:	Parafossarulus
Species:	P. manchouricus
Binomial name
Parafossarulus manchouricus (Gerstfeldt in Bourguignat, 1860)[1]
Synonyms[2]
Bythinia manchourica Gerstfeldt – Bourguignat, 1860

This species is medically important as a host for the liver fluke Clonorchis sinensis in East Asia.

Subspecies

• Parafossarulus manchouricus japonicus (Pilsbry, 1901)

Description

The shell has 5.5 whorls.^[1] The width of the shell is 6 mm.^[1] The height of the shell is 10 mm.^[1]

The haploid chromosome number of Parafossarulus manchouricus is n=17.^[3][4]

Distribution

This species occurs in: Russia (Amur River basin),^[5] Japan (Honshū, Kyushu and Shikoku), Korea, Taiwan^[6] and China.^[7]

The type locality is the Amur River and other rivers in the southern Siberia ("le fleuve Amour et divers cours d'eau de la Sibérie méridionale").^[1]

Habitat

Parafossarulus manchouricus lives in shallow ponds and in irrigation channels.^[8]

Parasites

This species is a first intermediate host for Clonorchis sinensis.^[9]