BIOTIC Species Information for Eurydice pulchra
Researched byLizzie Tyler Data supplied byUniversity of Sheffield
Refereed byThis information is not refereed.
Distribution and Habitat
Distribution in Britain & IrelandWidespread on open coast and estuarine sandy beaches, with reduced abundance in south-east England.
Global distributionEurydice pulchra is found from Norway and the outer Baltic to the Atlantic coast of Morocco, but not in the Mediterranean (Soika, 1955).
Biogeographic rangeNot researched Depth range
Distribution Additional InformationPopulation densities
Eurydice pulchra populations may occur at densities of 1500 per m² or more and, on a South Wales beach studied by Jones (1970b), the population exceeded 4000 per m².
Intertidal distribution
Eurydice pulchra lives on the upper half of the shore, generally being most abundant between mean tide level (MTL) and mean high water of neap tides (MHWN). Eurydice pulchra relies upon the cue of increasing wave action caused by the flood tide (Jones, 1970b) to initiate swimming from the substratum. It swims in search of food, and buries itself in the sand again as the tide ebbs. As the fortnightly spring tides carry water further up the shore, so Eurydice pulchra moves up, and it can be found in the sand right up to the mean high water of spring tides. When the tidal cycles swings again towards neaps, the Eurydice population also moves down shore again, and avoids being stranded above the neap high water mark (Fish, 1970).

Substratum preferencesCoarse clean sand
Fine clean sand
Physiographic preferencesEstuary
Open coast
Strait / sound
Enclosed coast / Embayment
Biological zoneUpper Eulittoral
Mid Eulittoral
Lower Eulittoral
Sublittoral Fringe
Wave exposureExposed
Moderately Exposed
Tidal stream strength/Water flow SalinityFull (30-40 psu)
Habitat Preferences Additional Information
Distribution References Naylor, 1972, Hayward & Ryland, 1995b, Hayward et al., 1996, Fish, 1970, Jones, 1970b, Alheit & Naylor, 1976, Soika, 1955, Jones & Naylor, 1967, Hayward & Ryland, 1990,
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