Invasion
Invasion Description
1st Record: Venice Island/CA/Sacramento River (1963, Brittan et al. 1963);
Geographic Extent
Venice Island/CA/Sacramento River (1963, Brittan et al. 1963); just downstream from Port of Stockton/CA/Sacramento River (1963, Brittan et al. 1963); (Palo Atlo/CA/Palo Alto Harbor, South San francisco Bay (1964, Brittan et al. 1970); San Rafael/CA/San Pablo Bay (1965, Brittan et al. 1970); Merced County/CA/San Luis Reservoir (1966, Dill and Cordone 1996); CA/'throughout San Francisco Bay and the Delta' (Brittan et al. 1970; Dill and Cordone 1996); Treasure Island, San Francisco/CA/San Francisco Bay (1967, Brittan et al. 1970); CA/Suisun Marsh (1999, Matern et al. 2002); Coon Island/CA/Napa River (2004, Cohen and Bollens 2008, 38°11’36’’N; 122°19’09’’W), Bull Island/CA/Napa River (2004, Cohen and Bollens 2008, 38°13’03’’N; 122° 18’ 17’’ W) and Pond 2A/CA/Napa River (2004, Cohen and Bollens 2008, 38°09’09’’N; 122°19’10’’W).; Eden-Alviso Landing Salt Pond complex, South San Francisco Bay (Mejia et al. 2008)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Hull Fouling |
Regional Impacts
| Ecological Impact | Competition | |
| Competition with native species (Leptocottus armatus- Staghorn Sculpin; (Eucyclogobius newberryi- Tidewater Goby) and introduced species (Tridentiger bifasciatus- Shimofuri Goby) is suspected (Meng et al. 1994; Fuller et al. 1999). | ||
| Ecological Impact | Predation | |
| Predation on eggs, larvae and juveniles of native species (Leptocottus armatus- Staghorn Sculpin; (Eucyclogobius newberryi- Tidewater Goby) is suspected (Meng et al. 1994) | ||
| Ecological Impact | Food/Prey | |
| Acanthogobius flavimanus was the most frequent food item of Harbor Seals (Phoca vitulina richardii) (Gibble and Harvey 2015) in San Francisco Bay. It was the most frequent fish prey of Striped Bass (Morone saxatilis) there, in 2003 (Nobriga and Feyrer 2008). | ||