BIOTIC Species Information for Edwardsia ivelli
Researched byAngus Jackson Data supplied byMarLIN
Refereed byDr Simon K. Davy
Taxonomy
Scientific nameEdwardsia ivelli Common nameIvell's sea anemone
MCS CodeD768 Recent SynonymsNone
PhylumCnidaria Subphylum
SuperclassAnthozoa ClassHexacorallia
Subclass OrderActiniaria
SuborderNynantheae FamilyEdwardsiidae
GenusEdwardsia Speciesivelli
Subspecies   
Additional InformationNo text entered
Taxonomy References Howson & Picton, 1997, Howson & Picton, 1997, Manuel, 1988, Sheader & Sheader, 1990, Manuel, 1975,
General Biology
Growth formVermiform unsegmented
 Feeding methodPassive suspension feeder
Mobility/MovementBurrower
Temporary attachment
 Environmental positionInfaunal
Typical food typesNo text entered HabitBurrow dwelling
BioturbatorNot relevant FlexibilityHigh (>45 degrees)
FragilityFragile SizeSmall(1-2cm)
HeightNot relevant Growth RateInsufficient information
Adult dispersal potentialInsufficient information DependencyIndependent
SociabilitySolitary
Toxic/Poisonous?No
General Biology Additional InformationNo text entered
Biology References Manuel, 1988, Sheader & Sheader, 1990, Manuel, 1975, Anonymous, 1999(d),
Distribution and Habitat
Distribution in Britain & IrelandWidewater lagoon, West Sussex.
Global distributionWidewater lagoon, West Sussex, England.
Biogeographic rangeNot researched Depth range<1 m
MigratoryNon-migratory / Resident   
Distribution Additional InformationThis species has not been recorded since 1983. Three surveys have since failed to record this species. It may be that it exists in such low numbers that rediscovery in surveys is unlikely. Additionally, the conditions in the lagoon have varied considerably over the last 20 years. Water levels have fallen as a result of little seawater input, the remaining water is hypersaline. Areas of the lagoon basin have become exposed, subsequently changes in the lagoon community have been recorded. It has been suggested that this species may now be extinct.
Substratum preferencesMud
 Physiographic preferencesIsolated saline water (Lagoon)
Biological zoneLagoonal
 Wave exposureNot relevant
Ultra Sheltered
Extremely Sheltered
Tidal stream strength/Water flowVery Weak (negligible)
 SalinityNot relevant
Insufficient information
Habitat Preferences Additional Information
Distribution References Manuel, 1988, Sheader & Sheader, 1990, Manuel, 1975,
Reproduction/Life History
Reproductive type Developmental mechanism
Reproductive SeasonInsufficient information Reproductive LocationInsufficient information
Reproductive frequencyInsufficient information Regeneration potential No
Life spanInsufficient information Age at reproductive maturityInsufficient information
Generation timeInsufficient information FecundityInsufficient information
Egg/propagule sizeInsufficient information Fertilization typeInsufficient information
Larvae/Juveniles
Larval/Juvenile dispersal potentialInsufficient information Larval settlement periodInsufficient information
Duration of larval stageInsufficient information   
Reproduction Preferences Additional InformationNo text entered
Reproduction References
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