Invasion
Invasion Description
Type Locality: Brighton, SussexEngland/English Channel (Lister 1834, cited by Kott 2001; MarLin 2007)
Geographic Extent
Orkney Island/Scotland/North Sea (2012-2017, Kakonnen et al. 2018); North Sea; Irish Sea; English Channel (Lister 1834, cited by Kott 2001; MarLin 2007); Sunderland Marina on the north-east coast of England (54°55'05.47"N 01°22'02.10"W)/England/North Sea (2006, Vance et al. 2008, 112 km from nearest previous location); Netherlands/North Sea (1st record 1977, Gittenberger et. 2007)
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
Regional Impacts
| Ecological Impact | Competition | |
| Diplosoma listerianum has been reported to foul cultured shellfish in the United Kingdom (Isle of Man) (da Rocha et al. 2009). Da Rocha et al. (2009) suggest that because of the thinness of D. listerianum colonies, its impact on mussel growth might be small, but this hypothesis still needs to be tested. Vance et al. (2008) observed that D. listerianum rapidly overgrew other fouling organisms on plates in newly colonized regions on the North sea coast of England. Schmidt and Warner (1986) found that D. listerianum outcompeted Trididemnurn tenerurn, Botryllus schlosseri and Botrylloides leachii in 39% of trials on fouling plates and reached stand-offs in 61%. | ||
| Economic Impact | Fisheries | |
| Diplosoma listerianum has been reported to foul cultured shellfish in the United Kingdom (Isle of Man) (da Rocha et al. 2009). Da Rocha et al. (2009) suggest that because of the thinness of D. listerianum colonies, its impact on mussel growth might be small, but this hypothesis still needs to be tested. | ||