BIOTIC Species Information for Harmothoe spp.
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| Researched by | Dr Paul Somerfield & Prof. Richard Warwick | Data supplied by | PML | ||||||||||||
| Refereed by | This information is not refereed | ||||||||||||||
| Taxonomy | |||||||||||||||
| Scientific name | Harmothoe spp. | Common name | A polychaete worm | ||||||||||||
| MCS Code | P50 | Recent Synonyms | |||||||||||||
| Phylum | Annelida | Subphylum | |||||||||||||
| Superclass | Class | Polychaeta | |||||||||||||
| Subclass | Order | Phyllodocida | |||||||||||||
| Suborder | Family | Polynoidae | |||||||||||||
| Genus | Harmothoe | Species | |||||||||||||
| Subspecies | |||||||||||||||
| Additional Information | |||||||||||||||
| Taxonomy References | Howson & Picton, 1997, | ||||||||||||||
| General Biology | |||||||||||||||
| Growth form | Vermiform segmented |
Feeding method | |||||||||||||
| Mobility/Movement | Environmental position | Epibenthic |
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| Typical food types | Small invertebrates, seagrass, diatoms | Habit | Free living | ||||||||||||
| Bioturbator | Flexibility | High (>45 degrees) | |||||||||||||
| Fragility | Intermediate | Size | Small-medium(3-10cm) | ||||||||||||
| Height | Growth Rate | Not researched | |||||||||||||
| Adult dispersal potential | 100-1000m | Dependency | |||||||||||||
| Sociability | |||||||||||||||
| Toxic/Poisonous? | No | ||||||||||||||
| General Biology Additional Information | |||||||||||||||
| Biology References | Fish & Fish, 1996, Hayward & Ryland, 1995b, Rouse & Pleijel, 2001 , Hayward et al., 1996, Hayward & Ryland, 1995b, | ||||||||||||||
| Distribution and Habitat | |||||||||||||||
| Distribution in Britain & Ireland | Not researched | ||||||||||||||
| Global distribution | Not researched | ||||||||||||||
| Biogeographic range | Not researched | Depth range | |||||||||||||
| Migratory | |||||||||||||||
| Distribution Additional Information | |||||||||||||||
| Substratum preferences | Algae Other species (see additional information) Gravel / shingle Crevices / fissures |
Physiographic preferences | |||||||||||||
| Biological zone | Wave exposure | ||||||||||||||
| Tidal stream strength/Water flow | Salinity | ||||||||||||||
| Habitat Preferences Additional Information | |||||||||||||||
| Distribution References | Hayward & Ryland, 1995b, Hayward & Ryland, 1995b, | ||||||||||||||
| Reproduction/Life History | |||||||||||||||
| Reproductive type | Gonochoristic |
Developmental mechanism | |||||||||||||
| Reproductive Season | See additional information | Reproductive Location | As adult | ||||||||||||
| Reproductive frequency | Regeneration potential | No | |||||||||||||
| Life span | 3-5 years | Age at reproductive maturity | 1-2 years | ||||||||||||
| Generation time | Not researched | Fecundity | 4000 - 5000 eggs per female | ||||||||||||
| Egg/propagule size | Fertilization type | External | |||||||||||||
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| Reproduction Preferences Additional Information | Although fertilisation is external, males and females lie closely together. Reproductive season varies with species. It has been reported as April to May in Harmothoe imbricata, November to January for Harmothoe extenuata and 'spring' for Harmothoe impar (Thorson, 1946; Fish & Fish, 1996) | ||||||||||||||
| Reproduction References | Fish & Fish, 1996, Thorson, 1946, Giangrande, 1997, Rasmussen, 1973, Curtis, 1977, Daly, 1972, | ||||||||||||||
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