Teel et al.: Genetic analysis of juvenile Oncorhynchus kisutch 



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Dimension 1 



Figure 2 



Multidimensional scaling (MDS) of Cavalli-Sforza and Edwards ( 1967) chord distances based on 56 

 allozyme loci between samples of 89 populations of coho salmon extending from northern California 

 to southern British Columbia. Location numbers are given in Table 1 and Figure 1. Populations 

 within regions are identified with polygons where possible. Open circles indicate populations that 

 did not cluster closely with nearby populations. Populations 2 from the California coast and 89 from 

 the upper Fraser River fall beyond the scale of the plot. 



in the two northern most transects along the Washington 

 coast, 24% in three transects closest to the Columbia River, 

 and 10% in the four most southern transects along the 

 Oregon coast. Samples from these three areas comprised 

 43%, 23%, and 33%, respectively, of the 275 fish caught 

 in September trawls. The numbers of offshore juveniles 



caught in 1998 were too small to provide accurate mixed- 

 stock estimates; therefore the ocean samples collected in 

 1999 and 2000, and a sample pooled over 1998-2000, were 

 analyzed separately. In the 1998-2000 pooled sample, 

 Columbia River populations were estimated to be the 

 major contributing regional group in June (47%, SD=6%) 



