BIOTIC Species Information for Echinocyamus pusillus
Click here to view the MarLIN Key Information Review for Echinocyamus pusillus
Researched byLizzie Tyler Data supplied byUniversity of Sheffield
Refereed byThis information is not refereed.
Taxonomy
Scientific nameEchinocyamus pusillus Common namePea urchin
MCS CodeZB211 Recent Synonyms

PhylumEchinodermata SubphylumEchinozoa
Superclass ClassEchinoidea
Subclass OrderClypeasteroidea
Suborder FamilyFibulariidae
GenusEchinocyamus Speciespusillus
Subspecies   

Additional Information
Taxonomy References Howson & Picton, 1997,
General Biology
Growth formGlobose
Feeding methodSurface deposit feeder
Sub-surface deposit feeder
Mobility/MovementBurrower
Environmental positionInfaunal
Typical food typesOrganic detritus HabitFree living
Bioturbator FlexibilityNone (< 10 degrees)
FragilityFragile SizeSmall(1-2cm)
Height0 Growth RateNot researched
Adult dispersal potentialNot researched DependencyIndependent
SociabilitySolitary
Toxic/Poisonous?No
General Biology Additional Information
Biology References Picton, 1993, Fish & Fish, 1996, Hayward & Ryland, 1995b, Hayward & Ryland, 1990, Julie Bremner, unpub data,
Distribution and Habitat
Distribution in Britain & IrelandFound on most British and Irish coasts although rare off south-east Britain.
Global distributionFound in western Europe from Norway to the Azores and the Mediterranean and south to western Africa.
Biogeographic rangeTemperate to warm temperate. Depth range0 - 1250 m
MigratoryInsufficient info.   
Distribution Additional Information

Substratum preferencesCoarse clean sand
Gravel / shingle
Physiographic preferences
Biological zone Wave exposure
Tidal stream strength/Water flow Salinity
Habitat Preferences Additional Information
Distribution References Foster-Smith, 2000, Picton, 1993, Hayward & Ryland, 1995b, Hayward & Ryland, 1990, Julie Bremner, unpub data,
Reproduction/Life History
Reproductive typeGonochoristic
Developmental mechanismPlanktotrophic
Reproductive SeasonSummer Reproductive LocationAs adult
Reproductive frequency Regeneration potential No
Life spanInsufficient information Age at reproductive maturity1 year
Generation timeNot researched Fecundity
Egg/propagule size224 µm diameter Fertilization typeExternal
Larvae/Juveniles
Larval/Juvenile dispersal potentialNot researched Larval settlement periodAugust to September
Duration of larval stage1-2 months   
Reproduction Preferences Additional Information
Reproduction References Fish & Fish, 1996, Thorson, 1946, Julie Bremner, unpub data,
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