BIOTIC Species Information for Hydrallmania falcata
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| Researched by | Charlotte Marshall | Data supplied by | MarLIN | ||||||||||||
| Refereed by | This information is not refereed. | ||||||||||||||
| Taxonomy | |||||||||||||||
| Scientific name | Hydrallmania falcata | Common name | A hydroid | ||||||||||||
| MCS Code | D424 | Recent Synonyms | Not researched | ||||||||||||
| Phylum | Cnidaria | Subphylum | |||||||||||||
| Superclass | Hydrozoa | Class | Leptolida | ||||||||||||
| Subclass | Leptothecatae | Order | Conica | ||||||||||||
| Suborder | Plumulariida | Family | Sertulariidae | ||||||||||||
| Genus | Hydrallmania | Species | falcata | ||||||||||||
| Subspecies | |||||||||||||||
| Additional Information | |||||||||||||||
| Taxonomy References | |||||||||||||||
| General Biology | |||||||||||||||
| Growth form | Articulate |
Feeding method | Passive suspension feeder |
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| Mobility/Movement | Permanent attachment |
Environmental position | Epifaunal Epilithic |
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| Typical food types | Habit | Erect | |||||||||||||
| Bioturbator | Not relevant | Flexibility | High (>45 degrees) | ||||||||||||
| Fragility | Fragile | Size | Medium(11-20 cm) | ||||||||||||
| Height | Up to 64 cm | Growth Rate | |||||||||||||
| Adult dispersal potential | 10-100m | Dependency | Independent | ||||||||||||
| Sociability | Colonial | ||||||||||||||
| Toxic/Poisonous? | No | ||||||||||||||
| General Biology Additional Information | Height can reach 64 cm although it is more commonly 10-30 cm (Cornelius, 1995b). | ||||||||||||||
| Biology References | Cornelius, 1995b, Kosevich, 2006, | ||||||||||||||
| Distribution and Habitat | |||||||||||||||
| Distribution in Britain & Ireland | Common off all British coasts (Hayward & Ryland, 1995b). | ||||||||||||||
| Global distribution | Global distribution from the Arctic to south-west Europe. | ||||||||||||||
| Biogeographic range | Not researched | Depth range | Depth range 20-100 m. | ||||||||||||
| Migratory | |||||||||||||||
| Distribution Additional Information | |||||||||||||||
| Substratum preferences | Pebbles Coarse clean sand Fine clean sand |
Physiographic preferences | |||||||||||||
| Biological zone | Wave exposure | ||||||||||||||
| Tidal stream strength/Water flow | Salinity | ||||||||||||||
| Habitat Preferences Additional Information | Common in sandy areas on shells, stones etc (Hayward & Ryland, 1995b). | ||||||||||||||
| Distribution References | Hayward & Ryland, 1995b, | ||||||||||||||
| Reproduction/Life History | |||||||||||||||
| Reproductive type | Developmental mechanism | ||||||||||||||
| Reproductive Season | December to April | Reproductive Location | Insufficient information | ||||||||||||
| Reproductive frequency | Annual episodic | Regeneration potential | Yes | ||||||||||||
| Life span | Insufficient information | Age at reproductive maturity | Insufficient information | ||||||||||||
| Generation time | Insufficient information | Fecundity | Insufficient information | ||||||||||||
| Egg/propagule size | 140 µm | Fertilization type | Internal | ||||||||||||
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| Reproduction Preferences Additional Information | Planula larvae (Hayward & Ryland, 1995b). The Marine Biological Association (1957) reported the reproductive season as December to April in the south-west of England. | ||||||||||||||
| Reproduction References | Hayward & Ryland, 1995b, MBA, 1957, Kosevich, 2006, | ||||||||||||||
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