Invasion

Invasion Description

1st Records: Waikeke Island/New Zealand/Bay of Islands (1994-2010, Westfall and Gardner 2010, 36° 47.272' S 175° 05.264' E); Wellington, North Island/New Zealand/Cook Strait (Daguin and Borsa 2000; Hilbish et al. 2000, southern gentoype); Mussel Point, South Island/New Zealand/Pacific Ocean (1994-2010, Westfall and Gardner 2010, 41° 43.989' S 174° 16.052' E; at all sites, hybrids of Northern Hemisphere M. galloprovincialis with M. edulis, no purebred M. edulis found).

Genetic studies of Mytilus mussels in the Southern Hemisphere indicate that they include a Southern Hemisphere genotype of M. galloprovinicalis derived from pre-human natural dispersal, recently introduced Northern Hemisphere genotypes of M. galloprovincialis, and hybrids of northern M. galloprovincialis with introduced M. edulis, from the Northern Hemisphere. So far, purebred populations of M. edulis have not been reported from the sothern Hemisphere (Westfall and Gardner 2010)

Geographic Extent

Waikeke Island/New Zealand/Bay of Islands (1994-2010, Westfall and Gardner 2010, 36° 47.272' S 175° 05.264' E); Wellington, North Island/New Zealand/Cook Strait (Daguin and Borsa 2000; Hilbish et al. 2000, southern gentoype); Mussel Point, South Island/New Zealand/Pacific Ocean (1994-2010, Westfall and Gardner 2010, 41° 43.989' S 174° 16.052' E; At all sites, hybrids of Northern Hemisphere M. galloprovincialis with M. edulis, no purebred M. edulis found)