620 



Fishery Bulletin 94(4). 1996 



Chehalis 

 Cowichon 

 onoimo 



c 



1 — Coldstream 

 1 — Wahleoch 

 Momquam 



- Puntledge 



£B Ouolicum 

 ChilliwacW 

 ■Nitinal 

 - I Quolicum 



'■ 



■4. 



V 



2i 



10 



Generalized distance 



Figure 3 



A neighbor-joining dendrogram of relationships among 39 stocks of chum 

 salmon based on allele frequencies at the Ssa-A33 and Ssa-A34 loci and 

 on band counts of occurrence for the probe Ssal. 



the six individual Fraser River stocks, derived from a 

 baseline for Fraser River only, indicate that discrimi- 

 nation among the stocks was possible (Table 7). Simi- 

 lar results were also observed when an ECVI-only or 

 WCVI-only baseline was used and when ECVI and 

 WCVI fish were in the simulated mixtures as appro- 

 priate. When an 18-stock regional baseline was used, 

 there was a clear indication of separation among Fraser 

 River, ECVI, and WCVI stocks (Table 7). 



Identification of individuals 



The accuracy of classifying individuals to specific 

 stocks or regions was dependent upon the specific 

 stock under consideration; the greatest accuracy was 

 observed for the more distinctive stocks or regional 

 groups. With a 39-stock baseline (Sliammon, 

 Cheakamus, and Kamchatka were removed owing 

 to lack of Ssal band counts), classification accuracy 



