Invasion
Invasion Description
1st records: Tacoma/WA/Puget Sound (1888, introduced from Willapa Bay, Smith 1896, cited by Carlton 1979; Carlton 2023a); Vancouver Island/British Columbia/Departure Bay, Straits of Georgia (Taylor 1895, cited by Carlton 1979; Carlton 2023a)
Geographic Extent
Ketchikan/AK/Tongass Narrows (1946, Hanna 1966; Carlton 2023a); Graham Island, Haida Gwai (Queen Charlotte Islands)/British Columbia/Naden Harbour (1955, Quayle 1960, cited by Carlton 1979); Graham Island, Queen Charlotte Islands/British Columbia/Masset Inlet (1939, Quayle 1943, cited by Carlton 1979; Carlton 2023); Prince Rupert/British Columbia/Hecate Straits (1955, Quayle 1960, cited by Carlton 1979; 2008; Choi et al. 2016); Kitimat/British Columbia/Kitimat Arm, Douglas Channel (2008, Choi et al. 2016); Vancouver Island/British Columbia/Mud Bay (2007, Mach et al. 2016); British Columbia/Clayoquot Sound (Newcomb 1893, cited by Carlton 1979; Carlton 2023); Vancouver Island/British Columbia/Barkley Sound (Quayle and Bernard 1966, cited by Carlton 1979); Vancouver Island/British Columbia/Cowichan Bay (2007, Mach et al. 2017 Port Alberni, Vancouver Island/British Columbia/Alberni Inlet (2007, Mach et al. 2016; Kitimat/BC/Kitimat Arm, Douglas Channel (2008, Choi et al. 2016); Vancouver Island/British Columbia/Departure Bay, Straits of Georgia (Taylor 1895, cited by Carlton 1979); ; Mayne Island/British Columbia/Straits of Georgia (Schrenk 1945, cited by Carlton 1979); Coffin Island/British Columbia/Straits of Georgia (1936, Quayle 1970, cited by Carlton 1979); British Columbia/Boundary Bay (1976, Swinbanks and Murray 1981); San Juan Islands/WA/Straits of Juan de Fuca (Smith 1896, cited by Carlton 1979); Orcas Island/WA/Straits of Juan de Fuca (Baker 1910, cited by Carlton 1979); San Juan Island/WA/Friday Harbor (Oldroyd 1918, cited by Carlton 1979); Bellingham/WA/Bellingham Bay (MacGinitie 1959, cited by Carlton 1979); WA/Padilla Bya (Riggs 2011); WA/Skagit Bay Porter (1973, cited by Carlton 1979); Tacoma/WA/Puget Sound (1888, introduced from Willapa Bay, Smith 1896, cited by Carlton 1979; Carlton 2023a); WA/Mud Bay, Eld Inlet, Puget Sound (2000, Cohen et al. 2001); Magnolia Park, Seattle/WA/Elliott Bay, Puget Sound (2000, Cohen et al. 2001); Seattle/WA/Kellogg Island Passage, Elliott Bay, Puget Sound (2000, Cohen et al. 2001); WA/Neah Bay (2001, de Rivera et al. 2005); WA/Discovery Bay (1999, Wilson and Partridge 2007)
Vectors
| Level | Vector |
|---|---|
| Probable | Fisheries Intentional |
Regional Impacts
| Economic Impact | Fisheries | |
| In Washington, they are less popular than Butter Clams (Saxidomus gigantea) or Littlenecks (Leukoma staminea- Pacific Littleneck; Venerupis philippinarum- Japanese Littleneck). However, commercial culture is taking place on private grounds in Skagit Bay and Port Susan (Washington Department of Fish and Wildlife 2012, http://wdfw.wa.gov/fishing/shellfish/clams/eastern_softshell.html). In British Columbia, they are occasionally harvested recreationally, but fisheries are often closed due to red tides (British Columbia Provincial Government, http://www.shim.bc.ca/species/softshel.htm). | ||