BIOTIC Species Information for Thieliana navis
Researched byNicola White Data supplied byMarLIN
Refereed byDr Richard S.K. Barnes
Distribution and Habitat
Distribution in Britain & IrelandWidewater lagoon, West Sussex.
Global distributionRecorded from only 3 locations worldwide: Kiel Canal, Widewater lagoon in Sussex and attached to a ship's hull in South Africa.
Biogeographic rangeNot researched Depth rangeInsufficient information
MigratoryNon-migratory / Resident   
Distribution Additional InformationThieliana navis is presumed to be an introduced species since it has only ever been recorded in the vicinity of ports and harbours. It is probably transported on ships hulls. It was first recorded in the UK in 1973 in Widewater Lagoon, Shoreham, West Sussex (Eno et al., 1997). It was last recorded there (as Clavopsella navis) by Sheader (1990) in 1990 when it was relatively abundant attached to algae. It is presumed extinct in South Africa as it has only been recorded from one ship's hull in 1959. The condition of the population in Kiel is not known.

Substratum preferencesAlgae
Physiographic preferencesIsolated saline water (Lagoon)
Biological zoneInsufficient information
Wave exposureVery Sheltered
Tidal stream strength/Water flowWeak (<1 kn)
SalinityReduced (18-30 psu)
Habitat Preferences Additional InformationNone entered
Distribution References Barnes, 1994, Millard, 1975, Sheader & Sheader, 1990, Eno et al., 1997, Anonymous, 1999(s), Reise et al., 1999, Boero, 1984,
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