Angulyagra polyzonata

{{Short description|Species of gastropod}} {{Speciesbox | fossil_range = | image = Naturalis Biodiversity Center - RMNH.MOL.156949 - Filopaludina polyzonata Frauenfeld - Viviparidae - Mollusc shell.jpeg | image_caption = ''Angulyagra polyzonata'' shells | status = LC | status_system = IUCN3.1 | status_ref = <ref name="iucn status 19 November 2021">{{cite iucn |author=Sri-aroon, P. |author2=Richter, K. |date=2012 |title=''Angulyagra polyzonata'' |volume=2012 |article-number=e.T166246A1121937 |doi=10.2305/IUCN.UK.2012-1.RLTS.T166246A1121937.en |access-date=19 November 2021}}</ref> | genus = Angulyagra | species = polyzonata | authority = (Frauenfeld, 1862) | synonyms_ref = <ref name="iucn status 19 November 2021" /> | synonyms = ''Sinotaia polyzonata'' Frauenfeld, 1862<br/> ''Taia polyzonata'' (Fravenfeld, 1862)<br/> ''Vivipara polyzonata'' Kobelt, 1909<br/> ''Viviparus polyzonata'' Kobelt, 1909<br/> ''Filopaludina polyzonata'' }}

'''''Angulyagra polyzonata''''' is a species of a freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae.

== Distribution == This species is found in southern and southeastern China<ref name="iucn status 19 November 2021" /> and in northern Vietnam.<ref name="iucn status 19 November 2021" /><ref name="Madsen 2015">Madsen H. & Hung N. M. (2015). "Reprint of "An overview of freshwater snails in Asia with main focus on Vietnam"". ''Acta Tropica'' '''141'''(Part B): 372–384. {{doi|10.1016/j.actatropica.2014.10.014}}.</ref> It is non-indigenous in Taiwan.<ref>{{in lang|zh}} 蔡政達(Cheng-Da Tasi), 蘇俊育(Chun-Yu Su) & 邱郁文(Yuh-Wen Chiu) (2009). "臺灣新紀錄外來種：多稜角螺Angulyagra polyzonata (Frauenfeld, 1862)（腹足綱：田螺科）之形態描述與生殖生物學初探. A Morphological Description and Reproductive Biology of ''Angulyagra polyzonata'' (Frauenfeld, 1862) (Gastropoda: Viviparidae) as a Snail Newly Recorded Specice to Taiwan". ''Bulletin of Malacology'' '''33'''(1): 1-14. [http://www.airitilibrary.com/Publication/alDetailedMesh?docid=02506378-200912-201005250062-201005250062-1-14 abstract].</ref>

==Description== The width of the shell is 11.2–21.4 mm.<ref name="Hung 2013"/> The height of the shell is 13.8–32.5 mm.<ref name="Hung 2013"/>

Similar species is ''Bellamya heudei''.<ref>Shea, M. (1994). The Chinese viviparid snail Bellamya heudei guangdungensis (Kobelt, 1906) in Australia (Prosobranchia: Viviparidae). Molluscan Research, 15(1), 3-11. {{doi|10.1080/13235818.1994.10673652}}.</ref>

==Ecology== === Habitat === ''Angulyagra polyzonata'' lakes, rivers, creeks and drains.<ref name="iucn status 19 November 2021" /> It is a common species in aquaculture ponds.<ref name="Hung 2013"/>

===Parasites and predators=== ''Angulyagra polyzonata'' is a host of a trematode ''Multicotyle purvisi''.<ref>{{Cite journal|last1=Alevs|first1=Philippe V.|last2=Vieira|first2=Fabiano M.|last3=Santos|first3=Cláudia P.|last4=Scholz|first4=Tomáš|last5=Luque|first5=José L.|s2cid=11731430|date=2015-02-12|title=A Checklist of the Aspidogastrea (Platyhelminthes: Trematoda) of the World|journal=Zootaxa|language=en|volume=3918|issue=3|pages=339–96|doi=10.11646/zootaxa.3918.3.2|pmid=25781098|issn=1175-5334}}</ref>

Predators of ''Angulyagra polyzonata'' include the black carp ''Mylopharyngodon piceus''.<ref name="Hung 2013">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. {{doi|10.1080/02705060.2013.800826}}.</ref>

== Human use == This species is eaten by people and it is used as fish, poultry and livestock raising.<ref name="iucn status 19 November 2021" /> It is usually collected from the aquaculture pond when the pond is empty.<ref name="Hung 2013"/>

== References == {{Commons category|Filopaludina polyzonata}} {{Reflist}}

Category:Viviparidae