Hydrobia acuta neglecta

Hydrobia acuta neglecta is a European subspecies of small brackish water snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae.^[2]

Hydrobia acuta neglecta
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Hydrobiidae
Genus:	Hydrobia
Species:	H. acuta
Subspecies:	H. a. neglecta
Trinomial name
Hydrobia acuta neglecta Muus, 1963[1]
Synonyms
Hydrobia neglecta Muus, 1963

Distribution

This species which has a distribution type: oceanic temperate occurs on the coasts of the North Sea, in countries and islands including:

• Iceland
• Denmark
• Sweden
• Great Britain
• Ireland
• France

Ecology

Hydrobia acuta neglecta occurs in coastal lagoons where incoming freshwater dilutes sea water. The preferred salinity range is 10-24 ‰.^[3]

Status

The status of this taxon is uncertain. Hydrobia neglecta is treated as a full species in Fauna Europaea,^[4] but in 1995 it had been suggested that H. neglecta is a synonym of the Mediterranean Hydrobia acuta (Draparnaud).^[5] Then a neglecta colony in northern France was shown to be acuta.^[6] In 2000 a molecular study concluded that north-west European populations were not specifically distinct from the Mediterranean Hydrobia acuta and designated them subspecies neglecta Muus.^[7]