BIOTIC Species Information for Hydrallmania spp.
Click here to view the MarLIN Key Information Review for Hydrallmania spp.
Researched bySean Lindsley-Leake Data supplied byMarLIN
Refereed byThis information is not refereed
Taxonomy
Scientific nameHydrallmania spp. Common nameA hydroid
MCS CodeD423 Recent SynonymsNot researched

PhylumCnidaria Subphylum
SuperclassHydrozoa ClassLeptolida
SubclassLeptothecatae OrderConica
Suborder FamilySertularidae
GenusHydrallmania Species
Subspecies   

Additional Information
Taxonomy References
General Biology
Growth form Feeding method
Mobility/MovementPermanent attachment
Environmental position
Typical food types HabitErect
BioturbatorNot relevant FlexibilityHigh (>45 degrees)
FragilityFragile SizeMedium(11-20 cm)
HeightUp to 64 cm Growth Rate
Adult dispersal potential10-100m DependencyIndependent
SociabilityColonial
Toxic/Poisonous?No
General Biology Additional Information
Biology References
Distribution and Habitat
Distribution in Britain & IrelandWidespread off all British and Irish coasts.
Global distributionFound from the Arctic to south-west Europe.
Biogeographic rangeCold temperate to temperate. Depth range20 to 100 m.
Migratory   
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 typeBudding
Permanent hermaphrodite
Developmental mechanismLecithotrophic
Reproductive SeasonDecember to April Reproductive LocationInsufficient information
Reproductive frequencyAnnual episodic Regeneration potential Yes
Life spanInsufficient information Age at reproductive maturityInsufficient information
Generation timeInsufficient information FecundityInsufficient information
Egg/propagule size140 µm Fertilization typeInternal
Larvae/Juveniles
Larval/Juvenile dispersal potentialInsufficient information Larval settlement periodInsufficient information
Duration of larval stageInsufficient information   
Reproduction Preferences Additional InformationThe reproductive mechanisms of Hydrallmania are thought to be: planktotrophic planula larvae, with budding within colony.
Reproduction References Kosevich, 2006,
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