830 
Fishery Bulletin 96(4), 1998 
Table 2 (continued) 
Ubiquitous lineage Scomber australasicus (continued) 
ID 
Haplotype 
A-NZL A-AUS A-MEX A-JPN 
Total 
85 
BAEABABFABAA 
1 
1 
86 
BAEABACFAFAA 
1 
1 
87 
BAEABSCFABAA 
1 
1 
88 
BAEBBACFABAA 
1 
1 
89 
BAFABACEACAA 
1 
1 
90 
BBDABACFABAA 
1 
1 
91 
BBEBBRCFABAA 
1 
1 
92 
BEKBBACFABAA 
1 
1 
93 
CAEABACFABAA 
1 
1 
Scomber scombrus 
ID 
Haplotype 
S-ENG S-MAS 
Total 
94 
ZZZZZZZZZFZZ 
17 7 
24 
95 
ZZZZYZZZZFZZ 
4 
4 
96 
ZZZZYZZZZFZZ 
2 
2 
97 
CZYZZXZZZFZZ 
1 
1 
98 
XZZZZZZZZFYZ 
1 
1 
99 
ZXZZZZZZZFZZ 
1 
1 
100 
ZYZZYZZZZFZZ 
1 
1 
101 
ZZZZXZZZZFZZ 
1 
1 
102 
ZZZZZVYZZFZZ 
1 
1 
103 
ZZZZZWZZZFZZ 
1 
1 
104 
ZZZZZZZXZFZZ 
1 
1 
105 
ZZZZZZZYZFZZ 
1 
1 
106 
ZZZZZZZZZYZZ 
1 
1 
restriction site data. Only one S. scombrus haplo- 
type (no. 94) was shared between the eastern and 
western North Atlantic samples, and it occurred at 
significantly different frequencies in each (0.35 in S- 
ENG, and 0.85 in S-MAS, Table 2). The distribution 
of haplotypes between the two samples was highly 
heterogeneous (P<0.001), although the estimate of 
net nucleotide sequence divergence between S-ENG 
and S-MAS was low (5=0.011%), reflecting the close 
relationship among haplotypes (Fig. 2). 
Scomber australasicus Restriction site analysis of 
S. australasicus mtDNA exhibited a range of in- 
traspecific divergences. Samples collected from Aus- 
tralia and New Zealand were very similar. Three 
haplotypes (nos. 69, 79, and 80), representing two 
genetically divergent matrilines, occurred at similar 
frequencies in each sample (Table 2), and no hetero- 
geneity was revealed (P=0.718, 5=-0.019%). The two 
samples of S. australasicus from the North Pacific 
(A-JPN and A-MEX) revealed greater divergence, of individuals in both samples (n=9 and n~ 12, re- 
comprising twelve haplotypes, of which two were spectively). Haplotype 82 occurred in five individu- 
shared, and one (no. 79) occurred in a large number als from A-MEX but was not present in the A-JPN 
