The invasion of Patagonia by Chinook salmon (Oncorhynchus tshawytscha): inferences from mitochondrial DNA patterns

RIVA ROSSI, C.M.; PASCUAL, M.A.; AEDO, E.; BASSO, N.; CIANCIO, J.E; MEZGA, B.; FERNANDEZ, D.F.; ERNST, B.

GENETICA

SPRINGER

Lugar: Berlin; Año: 2012

0016-6707

The Chinook salmon Oncorhynchus tshawytscha,which was introduced deliberately in Chile four decadesago for sport fishing and aquaculture, represents a rareexample of a successful translocation of an anadromousPacific salmon into the southern Hemisphere, offering aunique opportunity to examine the role of introductionhistory and genetic variability in invasion success. We usedhistorical information and mitochondrial displacement loopsequences (D-loop) from seven colonized sites in Chile andArgentina and from native and naturalized Chinook salmonpopulations to determine population sources and to examinelevels of genetic diversity associated with the invasion.