Invasion

Invasion Description

1st Record: Port Arthur/Tasmania/Pacific Ocean (1994-2010, Westfall and Gardner 2010, 43° 08.489' S 147° 51.397' E) Molecular analyses indicate that most of these populations were derived from Pleistocene migrations of M. galloprovincialis and or M. edulis and represent one or more undescribed species (Daguin and Borsa 2000; Hilbish et al. 2000). However, hybrids between the northern M. galloprovincialis genotype and M. edulis were found at Port Arthur (Westfall and Gardner 2010). The absence of purebred northern genotypes indicates that recent introductions have not occurred (Westfall and Gardner 2013).

Geographic Extent

Tasmania/Huon River estuary (Daguin and Borsa 2000, southern genotype); Port Arthur/Tasmania/Pacific Ocean (1994-2010, Westfall and Gardner 2010, 43° 08.489' S 147° 51.397' E, northern M. galloprovincialis, northern M. galloprovincialis X M. edulis, southern M. galloprovincialis; Westfall and Gardner 2013); Tasmania/Snug Cove (2009, Colgan and Middlefart 2011, 43 58 S, 147 15 53 E); Triabunna/Tasmania (2009, Colgan and Middlefart 2011, aquaculture site); SE Coast/Tasmamia/Pacific Ocean (a mixture of northern and southern ,em>M. galloprovincialis_genotypes, Zbawicka et al. 2019);