BIOTIC

BIOTIC Species Information for Hyale prevostii
All Taxonomy Biology Distribution Reproduction

Researched by	Jacqueline Hill	Data supplied by	MarLIN
Refereed by	Prof. P. Geoff Moore
Distribution and Habitat
Distribution in Britain & Ireland	All coasts of Britain and Ireland.
Global distribution	In Europe from southwest Iceland, north Norway and the Faeroes to the Mediterranean Sea. On the Atlantic coast of north America from south Labrador and the St Lawrence estuary to Connecticut. May be locally common.
Biogeographic range	Not researched	Depth range	Not relevant
Migratory	Seasonal (environment)
Distribution Additional Information	Hyale prevostii nestles in the damp apertures of live gastropods particularly during neap tides, vacating them at spring tide when the species migrates to higher levels of the shore (Moore, 1977).

Substratum preferences	Other species (see additional information) Algae Bedrock	Physiographic preferences	Open coast Estuary Strait / sound Enclosed coast / Embayment
Biological zone	Upper Eulittoral Mid Eulittoral Lower Eulittoral	Wave exposure	Moderately Exposed Sheltered Very Sheltered Extremely Sheltered
Tidal stream strength/Water flow	Strong (3-6 kn) Moderately Strong (1-3 kn) Weak (<1 kn) Very Weak (negligible)	Salinity	Reduced (18-30 psu) Variable (18-40 psu) Full (30-40 psu)
Habitat Preferences Additional Information
Distribution References	Lincoln, 1979, Hayward & Ryland, 1995b, Eno et al., 1997, Moore, 1986, Moore, 1977(c),