Invasion
Invasion Description
None
Geographic Extent
Azores/Atlantic Ocean (Johannson 1988)
Vectors
| Level |
Vector |
| Alternate
|
Dry Ballast |
| Alternate
|
Hull Fouling |
References
Johannesson, K. (1988) The paradox of Rockall: why is a brooding gastropod (Littorina saxatilis) more widespread than one having a planktonic larval dispersal stage (L. littorea)?, Marine Biology 99: 507-513