Geographic Distribution of Chromosome and Microsatellite DNA Polymorphisms in Oncorhynchus mykiss Native to Western Washington
Ostberg CO and Thorgaard GH. 1999. Geographic Distribution of Chromosome and Microsatellite DNA Polymorphisms in Oncorhynchus mykiss Native to Western Washington. Copeia. 1999(2):287-298
Chromosome studies of native populations of (Oncorhynchus mykiss (steelhead and rainbow trout) in western Washington and southern British Columbia revealed the presence of two evolutionarily distinct chromosome lineages. Populations between, and including the Elwha River, Washington, and Chillwack River, British Columbia contained 2n=60 chromosomes. Populations on the central Washington coast contained 2n=58 chromosomes. The north Washington coast and western Strait of Juan de Fuca contained individuals with 58, 59, or 60 chromosomes, suggesting this is a transition zone between 58 and 60 chromosome groups. ... A hypothesis is presented concerning the origin of the 60 chromosome lineage.
- Type
- Journal Article
- Authors
- Ostberg, Carl; Thorgaard, Gary
- Units
- OLYM
- Keywords
- DNA analysis, Genetics, Steelhead (Oncorhynchus mykiss)