BIOTIC Species Information for Tridonta spp.
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| Researched by | Sean Lindsley-Leake |
Data supplied by | MarLIN |
| Refereed by | This information is not refereed |
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| Taxonomy |
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| Scientific name | Tridonta spp. |
Common name | A bivalve mollusc |
| MCS Code | W1930 |
Recent Synonyms | Astarte |
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| Phylum | Mollusca |
Subphylum | Conchifera |
| Superclass | |
Class | Pelecypoda |
| Subclass | Heterodonta |
Order | Veneroida |
| Suborder | |
Family | Astartoidea |
| Genus | Tridonta |
Species | |
| Subspecies | |
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| Additional Information | type species Tridonta montagui accepted to ERMS(2004) as Astarte montagui |
| Taxonomy References |
ERMS, 2004, |
| General Biology |
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| Growth form | |
Feeding method | |
| Mobility/Movement | Burrower
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Environmental position | |
| Typical food types | phytoplankton |
Habit | Free living |
| Bioturbator | |
Flexibility | None (< 10 degrees) |
| Fragility | Robust |
Size | Small(1-2cm) |
| Height | not relevant |
Growth Rate | Not researched |
| Adult dispersal potential | Not researched |
Dependency | Independent |
| Sociability | Solitary |
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| Toxic/Poisonous? | No |
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| General Biology Additional Information | |
| Biology References |
Schander, 2001, |
| Distribution and Habitat |
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| Distribution in Britain & Ireland | Found in northern Britain off the coasts of Scotland and in the northern to central North Sea, off northern Ireland and off the coasts of Plymouth. |
| Global distribution | Found from northern Russia to south-west Britain. |
| Biogeographic range | Boreal to temperate. |
Depth range | |
| Migratory | |
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| Distribution Additional Information | |
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| Substratum preferences | |
Physiographic preferences | |
| Biological zone | |
Wave exposure | |
| Tidal stream strength/Water flow | |
Salinity | |
| Habitat Preferences Additional Information | |
| Distribution References |
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| Reproduction/Life History |
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| Reproductive type | Gonochoristic
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Developmental mechanism | Lecithotrophic
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| Reproductive Season | Oct and Nov in North Atlantic. |
Reproductive Location | Water column |
| Reproductive frequency | Annual protracted |
Regeneration potential |
No |
| Life span | Insufficient information |
Age at reproductive maturity | Insufficient information |
| Generation time | Insufficient information |
Fecundity | 4000-5500 |
| Egg/propagule size | 180 µm |
Fertilization type | External |
| Larvae/Juveniles |
| Larval/Juvenile dispersal potential | Insufficient information |
Larval settlement period | Insufficient information |
| Duration of larval stage | Insufficient information |
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| Reproduction Preferences Additional Information | Notes are for Astarte genus. As there is no information on Tridonta. The boreal forms spawn over a relatively short period in the spring and summer. The Arctic forms were to be found over long periods with mature gonads. They begin to spawn in winter or early spring. |
| Reproduction References |
Schander, 2001, von Oertzen, 1972, |
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