Mini-review: distribution of the Mediterranean mussel Mytilus galloprovincialis and hybrids in the Northeast Pacific
|Title||Mini-review: distribution of the Mediterranean mussel Mytilus galloprovincialis and hybrids in the Northeast Pacific|
|Publication Type||Journal Article|
|Year of Publication||2004|
|Authors||Wonham, M. J.|
|Journal||Journal of Shellfish Research|
The non native Mediterranean mussel Mytilus galloprovincialis is broadly established in the northeast Pacific. Until recently, the coast north of Humboldt Bay, California, USA, was not considered a major zone of sympatry and hybridization with the native sibling species M. trossulus. However, M. galloprovincialis has been introduced in Washington, USA, and British Columbia, Canada. for aquaculture, has been collected from ballast water in-bound to Oregon, USA, and is now reported widely in Puget Sound, Washington. Here 1 review published reports of M. galloprovincialis alleles in the Northeast Pacific, including recent data showing that these alleles are more widespread and abundant in Washington than previously known. These results indicate the presence of a major zone of sympatry and hybridization in Washington waters that may be contiguous with the California zone. Because M. galloprovincialis has likely been introduced to the region on multiple occasions via multiple routes, it is unlikely that a sole source can be identified. Factors influencing the success and impacts of this now widespread invader remain to be investigated.