BIOTIC Species Information for Polycarpa spp.
Researched bySean Lindsley-Leake Data supplied byMarLIN
Refereed byThis information is not refereed
Scientific namePolycarpa spp. Common nameA sea squirt
MCS CodeZD110 Recent Synonyms

PhylumChordata Subphylum
Superclass ClassAscidiacea
Subclass OrderStolidobranchia
Suborder FamilyStyelidae
GenusPolycarpa Species

Additional Information
Taxonomy References Millar, 1970,
General Biology
Growth form Feeding method
Mobility/MovementPermanent attachment
Environmental position
Typical food types HabitAttached
Bioturbator FlexibilityHigh (>45 degrees)
FragilityFragile SizeSmall-medium(3-10cm)
Height Growth Rate
Adult dispersal potential DependencyIndependent
General Biology Additional Information
Biology References Millar, 1970,
Distribution and Habitat
Distribution in Britain & Ireland
Global distribution
Biogeographic range Depth range
Distribution Additional Information

Substratum preferences Physiographic preferences
Biological zone Wave exposure
Tidal stream strength/Water flow Salinity
Habitat Preferences Additional Information
Distribution References
Reproduction/Life History
Reproductive typePermanent hermaphrodite
Developmental mechanismLecithotrophic
Reproductive SeasonApril to November Reproductive LocationWater column
Reproductive frequencyAnnual episodic Regeneration potential Yes
Life spanInsufficient information Age at reproductive maturity<1 year
Generation time<1 year Fecundity20000
Egg/propagule size150-240 µm Fertilization typeExternal
Larval/Juvenile dispersal potential10-100m Larval settlement periodFollowing day
Duration of larval stage<1 day   
Reproduction Preferences Additional InformationPolycarpa produces lecithotrophic tadpole larvae.
Reproduction References Chen & Dai, 2000, Millar, 1970,
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