Invasion
Invasion Description
1st Record: Charleston Boat Basin/OR/Coos Bay (1978, Carlton 1989)
Geographic Extent
Charleston Boat Basin/OR/Coos Bay (1978, Carlton 1989; 2003, de Rivera et al. 2005a); Port Adams Jetty, Coos Bay/OR/Coos Bay (1988, Hewitt 1993)
Vectors
Level | Vector |
---|---|
Alternate | Hull Fouling |
Alternate | Oyster Accidental |
Regional Impacts
Ecological Impact | Food/Prey | |
In feeding trials, the native crabs Hemigrapsus oregonensis, the flatworm Eurylepta leoparda and the nudibranch Hermissenda crassicornis fed heavily on the native tuinicate Distaplia occidentalis but at much lower rates on the non-native Botryllus schlosseri and Botrylloides violaceus) (Kincaid and de Rivera 2020). | ||