''Angulyagra polyzonata'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of a

freshwater snail Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...

with a

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

and an operculum, an aquatic

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the family

Viviparidae Viviparidae, sometimes known as the river snails or mystery snails, are a family of large operculate freshwater snails, aquatic gastropod mollusks. This family is classified in the informal group Architaenioglossa according to the taxonomy of ...

Distribution

This species is found in southern and southeastern

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

and in northern

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

.Madsen H. & Hung N. M. (2015). "Reprint of “An overview of freshwater snails in Asia with main focus on Vietnam”". ''

Acta Tropica Elsevier () is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as ''The Lancet'', ''Cell'', the ScienceDirect collection of electronic journals, '' Trends'', the ...

'' 141(Part B): 372–384. . It is non-indigenous in Taiwan.

Description

The width of the shell is 11.2–21.4 mm. The height of the shell is 13.8–32.5 mm. Similar species is ''

Bellamya heudei ''Bellamya'' was a supertanker, built in 1976 by Chantiers de l'Atlantique at Saint-Nazaire for the French branch of Shell Oil. She was the second Batillus class supertanker. ''Bellamya'', together with her sister ships ''Batillus, Pierre Guil ...

''.

Ecology

Habitat

''Angulyagra polyzonata'' lakes, rivers, creeks and drains. It is a common species in aquaculture ponds.

Parasites and predators

''Angulyagra polyzonata'' is a host of a trematode '' Multicotyle purvisi''. Predators of ''Angulyagra polyzonata'' include the

black carp The black carp (''Mylopharyngodon piceus'') or Chinese black roach is a species of cyprinid freshwater fish and the sole extant species of the genus ''Mylopharyngodon''. It is native to lakes and rivers in East Asia, ranging from the Amur Basin ac ...

''Mylopharyngodon piceus''.Hung, N. M., Stauffer, J. R., & Madsen, H. (2013). Prey species and size choice of the molluscivorous fish, black carp (Mylopharyngodon piceus). Journal of freshwater ecology, 28(4), 547-560. .

Human use

This species is eaten by people and it is used as fish, poultry and livestock raising. It is usually collected from the aquaculture pond when the pond is empty.

References

External links

Viviparidae {{Viviparidae-stub