The biogeography and conservation of rainbow trout, Oncorhynchus mykiss ...

• Main Author: McCusker, Megan R.
• Format: Text
• Language: English
• Published: University of British Columbia 2009
• Subjects: Kamchatka; Siberia
• Online Access: https://dx.doi.org/10.14288/1.0089407; https://doi.library.ubc.ca/10.14288/1.0089407

Northwestern North America has been repeatedly glaciated over the past million years, with the most recent glaciation occurring between 60,000 and 10,000 years ago. Where species survived glaciation and what dispersal routes they used during recolonization most likely had a profound effect on their intraspecific genetic variation. In this study, molecular techniques were used to investigate biogeographical, taxonomic and conservation issues in the rainbow trout, Oncorhynchus mykiss. Allozyme data were consolidated from the literature to assess relationships of rainbow trout throughout its range, and a divergence between coastal and inland populations from California to Kamchatka in eastern Siberia was supported. For greater detail, a mitochondrial DNA analysis of restriction fragment length polymorphism was done, focusing mainly on British Columbia and the northern distribution of the species. Two phylogenetically distinct mitochondrial lineages were found with an average of 1.03% sequence divergence, with ...