Aylacostoma [SEP] parent taxon
Aylacostoma
Aylacostoma is a genus of tropical freshwater snails with an operculum, aquatic gastropod molluscs in the family Thiaridae. They are found in South and Central America. As a consequence of the Yacyretá Dam, two species are entirely extinct and another is extinct in the wild.
Species.
Species within genus "Aylacostoma" include:
- "Aylacostoma brunneum"
- "Aylacostoma chloroticum"
- "Aylacostoma ci"
- "Aylacostoma exoplicata"
- "Aylacostoma francana"
- "Aylacostoma glabrum"
- "Aylacostoma guaraniticum"
- "Aylacostoma osculati" - synonym: "Hemisinus osculati"
- "Aylacostoma stigmaticum"
- "Aylacostoma tenuilabris"
Distribution.
The native distribution of this genus includes Central and South America.
Life habits.
Some species in this genus used to live in areas of white water in the Yacyretá Rapids, Paraná River, feeding on the algae that grow attached to the rocks on the bottom. The water in the area is saturated with oxygen, from the fast