Invasion
Invasion Description
1st Record: CA/Tomales Bay (1941, established, Copeland 1941, cited by Carlton 1979; Carlton and Roth 1975, cited by Carlton 1979)
Geographic Extent
CA/Tomales Bay (1941, established, Copeland 1941, cited by Carlton 1979; Carlton and Roth 1975, cited by Carlton 1979, presence variable, McLean, in Carlton 2007); CA/Morro Bay (1966, 2 live specimens, establishment unknown, Carlton 1979)
Vectors
| Level | Vector |
|---|---|
| Probable | Oyster Accidental |
Regional Impacts
| Ecological Impact | Predation | |
| Ocinebrellus inornatus was a major predator on Olympia Oysters (Ostrea lurida), especially on the eastern side of the Bay, when low salinities and high temperatures, reduced predation by native Rock Crabs (Cancer productus). Climate warming my increase predatpory impacts by this snail (Cheng et al. 2016). Native predatory snails (Acanthinucella spirata) appeared to have little impact on Olymbic Oyster populations (Cheng and Grosholz 2016). | ||