Invasion
Invasion Description
1st Record: WA/Willapa Bay (1946, Kincaid 1947, cited by Carlton 1979)
Geographic Extent
WA/Willapa Bay (1946, Kincaid 1947, cited by Carlton 1979); WA/Stackpole Slough, Willapa Bay (2000, Cohen et al. 2001); Omerara Point/WA/Willapa Bay (2000, Cohen et al. 2001); Goose Point/WA/Willapa Bay (2000, Cohen et al. 2001); Round Island/WA/Willapa Bay (2000, Cohen et al. 2001)
Vectors
| Level | Vector |
|---|---|
| Probable | Oyster Accidental |
Regional Impacts
| Economic Impact | Fisheries | |
| Ruditapes philippinarum (Manila Clam, Japanese Littleneck) is reared in shellfish farms and fished recreationally in Willapa Bay (Ruesink et al. 2006; Washington Department of Fish and Wildlife 2013). | ||
References
Carlton, James T. (1979) History, biogeography, and ecology of the introduced marine and estuarine invertebrates of the Pacific Coast of North America., Ph.D. dissertation, University of California, Davis. Pp. 1-904Cohen, Andrew N. and 22 authors (2001) <missing title>, Washington State Department of Natural Resources, Olympia. Pp. <missing location>
Ruesink, J. L. and 6 authors (2014) Spatio-temporal recruitment variability of naturalized Manila clams (Ruditapes philippinarum) in Willapa Bay, Washington, USA, Fisheries Research 151: 199-204
Ruesink, J. L.; Freshley, N.; Herrold, S.; Trimble, A. C.; Patten, K. (2014) Influence of substratum on non-native clam recruitment in Willapa Bay, Washington, USA, Journal of Experimental Marine Biology and Ecology 459: 23-30
Ruesink, J. L.; Feist, B. E.; Harvey, C. J., Hong, J. S.; Trimble, A. C.; Wisehart , L. M. (2006) Changes in productivity associated with four introduced species: ecosystem transformation of a ‘pristine’ estuary., Marine Ecology Progress Series 311: 203-215.
Tsai, Chaochung; Yang, Sylvia; Trimble, Alan C.; Ruesink, Jennifer L. (2010) Interactions between two introduced species: Zostera japonica(dwarf eelgrass) facilitates itself and reduces condition of Ruditapes philippinarum (Manila clam) on intertidal flats, Marine Biology 157: 1929-1936
2013 Hardshell Clams. http://wdfw.wa.gov/fishing/shellfish/clams/