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Cipangopaludina cathayensis facts for kids

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Cipangopaludina cathayensis
Cipangopaludina cathayensis shell.png
Shell and operculum from type description.
Conservation status
Scientific classification
Synonyms

Paludina catayensis Heude, 1890 (orthographic error)
Paludina cathayensis Heude, 1890

Cipangopaludina cathayensis is a species of large, freshwater snail with an operculum and a gill, an aquatic gastropod mollusk in the family Viviparidae, the river snails.

Taxonomy

This species was described under the name Paludina catayensis by French Jesuit Pierre Marie Heude in 1890. Later reviewers treated the specific name catayensis as an orthographic error and changed the specific name to cathayensis. There is high intraspecific variation of shells within the genus Cipangopaludina, so Wilhelm Kobelt (1909) considered this taxon as a subspecies of Vivipara chinensis. Later authors Yen (1943), Liu (1991) and Lu et al (2014) considered this taxon as a separate species.

Distribution

The species has a wide distribution throughout central and southeastern China, occurring in East China (provinces Shandong, Anhui, Jiangsu, Zhejiang, Jiangxi), Northeast China (Jilin), North China (Shanxi, Hebei) and Central China (Henan, Hubei, Hunan).

Description

The width of the shell is 24.3–50.5 mm. The height of the shell is 27.7–58.5 mm. The shell has from five to six whorls. The apex is pointed.

Cipangopaludina cathayensis shell 2
Drawing of an apertural view.
Cipangopaludina cathayensis shell 3
Drawing of an abapertural view.

C. cathayensis has gills and an operculum. The kidney is triple-shaped. The diploid chromosome number of C. cathayensis is 2n=18. The complete mitochondrial genome of Cipangopaludina cathayensis is known since 2014. Its length is 17,157 bp.

Ecology

It inhabits lakes, reservoirs and ponds, as well as grassy paddies, where it clings to aquatic plants.

Each gravid female carries more than 60 embryos inside her. The shell of embryo has three whorls.

The pollutant removal in constructed wetlands with these snails was better, than in constructed wetlands without them.

Parasites of Cipangopaludina cathayensis include trematode Aspidogaster conchicola.

Human use

Cipangopaludina cathayensis
Nutritional value per 100 g (3.5 oz)
3.83 g
Protein
Threonine 2.952 g
Isoleucine 2.026 g
Leucine 5.198 g
Lysine 3.700 g
Methionine 1.145 g
Cystine 1.233 g
Phenylalanine 1.894 g
Tyrosine 2.731 g
Valine 1.894 g
Arginine 4.537 g
Histidine 1.057 g
Alanine 3.524 g
Aspartic acid 6.211 g
Glutamic acid 9.868 g
Glycine 3.340 g
Proline 1.850 g
Serine 2.996 g
Other constituents Quantity
Water 77.30 g
Crude fat 0.60 g
Crude protein 13.72 g
Crude ash 4.55 g
Percentages estimated using US recommendations for adults.

It is used as human food and in the preparation of medicines, and as feed for fish, poultry and livestock. It is also used as a fertilizer.

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