BIOTIC Species Information for Thracia 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 | Thracia spp. | Common name | A bivalve mollusc | ||||||||||||
| MCS Code | W2227 | Recent Synonyms | |||||||||||||
| Phylum | Mollusca | Subphylum | |||||||||||||
| Superclass | Class | Pelecypoda | |||||||||||||
| Subclass | Order | Pholadomyoida | |||||||||||||
| Suborder | Family | Thraciidae | |||||||||||||
| Genus | Thracia | Species | |||||||||||||
| Subspecies | |||||||||||||||
| Additional Information | |||||||||||||||
| Taxonomy References | Howson & Picton, 1997, | ||||||||||||||
| General Biology | |||||||||||||||
| Growth form | Bivalved |
Feeding method | Active suspension feeder |
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| Mobility/Movement | Burrower |
Environmental position | Infaunal |
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| Typical food types | Phytoplankton, detritus. | Habit | Free living | ||||||||||||
| Bioturbator | Flexibility | None (< 10 degrees) | |||||||||||||
| Fragility | Intermediate | Size | Small-medium(3-10cm) | ||||||||||||
| Height | Growth Rate | Not researched | |||||||||||||
| Adult dispersal potential | Not researched | Dependency | Independent | ||||||||||||
| Sociability | Solitary | ||||||||||||||
| Toxic/Poisonous? | No | ||||||||||||||
| General Biology Additional Information | |||||||||||||||
| Biology References | Tebble, 1976, | ||||||||||||||
| Distribution and Habitat | |||||||||||||||
| Distribution in Britain & Ireland | Found on all British and Irish coasts. | ||||||||||||||
| Global distribution | Found in western Europe from Norway to the Mediterranean. | ||||||||||||||
| Biogeographic range | Temperate. | Depth range | 2 - 50 m. | ||||||||||||
| Migratory | Non-migratory / Resident | ||||||||||||||
| Distribution Additional Information | |||||||||||||||
| Substratum preferences | Coarse clean sand Fine clean sand Muddy sand Gravelley sand |
Physiographic preferences | |||||||||||||
| Biological zone | Sublittoral Fringe Upper Infralittoral Lower Infralittoral Upper Circalittoral Lower Circalittoral |
Wave exposure | |||||||||||||
| Tidal stream strength/Water flow | Salinity | Full (30-40 psu) Variable (18-40 psu) |
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| Habitat Preferences Additional Information | |||||||||||||||
| Distribution References | Tebble, 1976, MBA, 1957, | ||||||||||||||
| Reproduction/Life History | |||||||||||||||
| Reproductive type | Permanent hermaphrodite |
Developmental mechanism | Planktotrophic |
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| Reproductive Season | June to September | Reproductive Location | As adult | ||||||||||||
| Reproductive frequency | Regeneration potential | No | |||||||||||||
| Life span | Insufficient information | Age at reproductive maturity | Insufficient information | ||||||||||||
| Generation time | Not researched | Fecundity | Insufficient information | ||||||||||||
| Egg/propagule size | Insufficient information | Fertilization type | Insufficient information | ||||||||||||
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| Reproduction Preferences Additional Information | |||||||||||||||
| Reproduction References | MBA, 1957, | ||||||||||||||
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