FISHERY BULLETIN: VOL. 85, NO. 4 



£ 



H 



SOLEDUCK RIVER 

 HOH RIVER 

 CLEARWATER RIVER 

 BOGACHIEL RIVER 

 SNOW CREEK 

 CALAWAH RIVER 

 SNOHOMISH RIVER 

 UPPER OUEETS RIVER 

 QUINAULT NFH 



0.004 0.003 0.002 0.001 



Genetic distance 



Figure 7. — Coho salmon — dendrogram showing results of analysis, by the unweighted pair group 

 method, of genetic distance between samples. Distances were based on 24 protein-coding loci or pairs of 

 loci. 



Figure 8. — Coho salmon — two-dimensional representation (from nonmetric multidimensional scaling) of 

 genetic distances among samples collected for this study. Only samples scored for bGala-2 and Idh-3,4 

 were included in the analysis. 



emphasize that the lack of differentiation in fre- 

 quencies of electrophoretically detectable alleles 

 does not preclude the existence of important ge- 

 netic differences or status as separate stocks (ge- 

 netic populations). The high degree of "homing" 



by both chinook salmon (see, e.g., Rich and 

 Holmes 1928) and coho salmon (see, e.g., Shap- 

 avalov and Taft 1954) to the streams from which 

 they originate suggests that salmon from differ- 

 ent drainages should be considered as separate 



692 



