BIOTIC Species Information for Corystes cassivelaunus
Researched byLizzie Tyler Data supplied byUniversity of Sheffield
Refereed byThis information is not refereed.
Scientific nameCorystes cassivelaunus Common nameMasked crab
MCS CodeS1552 Recent Synonyms

PhylumCrustacea Subphylum
Superclass ClassEumalacostraca
SubclassEucarida OrderDecapoda
SuborderPleocyemata FamilyCorystidae
GenusCorystes Speciescassivelaunus

Additional Information
Taxonomy References Hayward et al., 1996, Naylor, 2000, Campbell, 1982, Howson & Picton, 1997, Hayward & Ryland, 1995b,
General Biology
Growth formArticulate
Feeding methodPredator
Environmental positionEpifaunal
Typical food typesBurrowing invertebrates HabitFree living
BioturbatorNot relevant FlexibilityNone (< 10 degrees)
FragilityFragile SizeSmall-medium(3-10cm)
HeightNot researched Growth RateNot researched
Adult dispersal potentialNot researched DependencyIndependent
General Biology Additional Information
Biology References Hayward & Ryland, 1995b, Crothers & Crothers, 1988, Fish & Fish, 1996, Ingle, 1980, Warner, 1977, Hayward & Ryland, 1990, Julie Bremner, unpub data,
Distribution and Habitat
Distribution in Britain & IrelandFound on all British and Irish coasts.
Global distributionFound in north-west Europe from Sweden to Portugal and in the Mediterrean off the coasts of Malta.
Biogeographic rangeTemperate to warm temperate. Depth range0 - 90 m
MigratoryNon-migratory / Resident   
Distribution Additional Information

Substratum preferencesCoarse clean sand
Fine clean sand
Sandy mud
Muddy sand
Gravelley sand
Physiographic preferencesOpen coast
Offshore seabed
Strait / sound
Enclosed coast / Embayment
Biological zoneSublittoral Fringe
Upper Infralittoral
Lower Infralittoral
Upper Circalittoral
Lower Circalittoral
Circalittoral Offshore
Wave exposureExposed
Moderately Exposed
Very Sheltered
Tidal stream strength/Water flowField unresearched
SalinityFull (30-40 psu)
Habitat Preferences Additional Information
Distribution References Hayward et al., 1996, Hiscock et al, 2001, NBN, 2002, Hayward & Ryland, 1995b, Ingle, 1980, Warner, 1977, Hayward & Ryland, 1990, Julie Bremner, unpub data,
Reproduction/Life History
Reproductive typeGonochoristic
Developmental mechanismPlanktotrophic
Reproductive SeasonMay to July Reproductive LocationAs adult
Reproductive frequencyAnnual protracted Regeneration potential No
Life span3-5 years Age at reproductive maturity1-2 years
Generation timeNot researched Fecundity
Egg/propagule size500 µm diameter Fertilization typeInternal
Larval/Juvenile dispersal potentialNot researched Larval settlement periodJune to August
Duration of larval stage11-30 days   
Reproduction Preferences Additional Information
Reproduction References Mente, 2008, Gurney, 1902, Wenner, 1985, Hayward & Ryland, 1995b, Crothers & Crothers, 1988, Ingle, 1980, Hartnoll, 1968, Julie Bremner, unpub data, Tillin et al., 2006,
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