Alzoniella
Encyclopedia
Alzoniella is a genus
of minute freshwater spring snail
s, aquatic
gastropod mollusks or micromollusk
s in the family Hydrobiidae
.
All the species within the snail genus Alzoniella are crenobiotic, i.e. they are dependent on spring
s.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of minute freshwater spring snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
gastropod mollusks or micromollusk
Micromollusk
A micromollusk is a descriptive term for a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small...
s in the family Hydrobiidae
Hydrobiidae
Hydrobiidae, common name mud snails, is a large cosmopolitan taxonomic family of very small freshwater snails and brackish water snails that have an operculum, aquatic gastropod mollusks in the clade Littorinimorpha.- Distribution :...
.
All the species within the snail genus Alzoniella are crenobiotic, i.e. they are dependent on spring
Spring (hydrosphere)
A spring—also known as a rising or resurgence—is a component of the hydrosphere. Specifically, it is any natural situation where water flows to the surface of the earth from underground...
s.
Species
The genus Alzoniella contains the following species:- Alzoniella hartwigschuettiAlzoniella hartwigschuettiAlzoniella hartwigschuetti is a species of spring snail, an aquatic gastropod in the family Hydrobiidae. This species is endemic to Austria....
- Alzoniella slovenicaAlzoniella slovenicaAlzoniella slovenica is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae, which are sometimes known as the snouted water snails.- Distribution :...