Invasion
Invasion Description
1st Record: CA/Suisun Bay (1993, Orsi and Ohtsuka 1999)
Geographic Extent
CA/Suisun Bay (1993, Orsi and Ohtsuka 1999; Hoof and Bollens 2004); CA/Carquinez Straits (1997-1999, Hoof and Bollens 2004); CA/San Pablo Bay (1997-1999, Hoof and Bollens 2004); CA/Central San Francisco Bay (1997-1999, Hoof and Bollens 2004); CA/South San Francisco Bay (Hoof and Bollens 2004); Bull Island/CA/Napa River (2003-2005, Bollens et al. 2014)
Vectors
| Level | Vector |
|---|---|
| Probable | Ballast Water |
Regional Impacts
| Ecological Impact | Predation | |
| Predatory impact of T. dextrilobatus on native Acartia spp. averaged a decrease of 3% of individuals per day for 1997-1999, peaking at 63%; and on introduced Oithona davisae averaged 1% decrease per day, peaking at 22% (Hooff and Bollens 2004). | ||