532 
Fishery Bulletin 96(3), 1998 
*158, and *55, IDHP-1*81 and *119, MDH-A2*65, 
PGM-1*82, *114, and *103, PROT-3*88, SOD -1*109, 
and TPI-1*-41 . Differing PGM-1* alleles and allele 
frequencies contributed most to the overall levels of 
differentiation observed between Alaskan and Atlan- 
tic Ocean C. opilio populations. Multilocus between- 
population chord distance measures ranged from 
0.029 to 0.033 in Alaskan collections and increased to 
0.043 when we added the Atlantic Ocean population. 
Comparison of C. bairdi and 
C. opilio from Alaska 
A total of 27 loci, AAT-1 *,AAT-2*,AH-3*, ADA-1 *, ADA- 
Table 4 
Hierarchical log-likelihood analysis for Chionoecetes bairdi. 
df 
AAT-1 * 
df 
AAT-2* 
df 
AH -3* 
df 
ALAT* 
Total 
16 
13.10 
16 
12.70 
16 
14.72 
8 
2.21 
Among 
2 
1.23 
2 
6.35* 
2 
1.90 
1 
1.60 
Within 
14 
11.87 
14 
6.35 
14 
12.82 
7 
0.61 
Bering Sea 
2 
2.69 
2 
0.62 
2 
2.54 
1 
0.61 
Gulf of Alaska 
12 
9.18 
12 
5.73 
12 
10.28 
6 
0.00 
Among 
2 
1.49 
2 
0.10 
2 
1.54 
1 
0.00 
Within 
10 
7.69 
10 
5.63 
10 
8.74 
5 
0.00 
Northern Gulf 
8 
7.69 
8 
4.83 
8 
5.38 
4 
0.00 
Southeast 
2 
0.00 
2 
0.80 
2 
3.36 
1 
0.00 
df 
CBYR* 
df 
G3PDH-1 * 
df 
G3PDH-2 * 
df 
GPI-A1* 
Total 
8 
2.21 
8 
8.25 
16 
43.07** 
40 
37.66 
Among 
1 
1.61 
1 
0.31 
2 
13.82** 
5 
3.89 
Within 
7 
0.60 
7 
7.94 
14 
29.25** 
35 
33.77 
Bering Sea 
1 
0.60 
1 
1.01 
2 
16.84** 
5 
3.50 
Gulf of Alaska 
6 
0.00 
6 
6.93 
12 
12.41 
30 
30.27 
Among 
1 
0.00 
1 
1.16 
2 
0.49 
5 
6.25 
Within 
5 
0.00 
5 
5.77 
10 
11.92 
25 
24.02 
Northern Gulf 
4 
0.00 
4 
3.85 
8 
9.94 
20 
21.57 
Southeast 
1 
0.00 
1 
1.92 
2 
1.98 
5 
2.45 
df 
IDHP-1 * 
df 
MDH-A1* 
df 
PEP A* 
df 
PGDH* 
Total 
24 
38.63* 
16 
10.40 
16 
30.30* 
24 
15.60 
Among 
3 
3.79 
2 
5.96 
2 
4.55 
3 
2.87 
Within 
21 
34.84* 
14 
4.44 
14 
25.75* 
21 
12.73 
Bering Sea 
3 
3.56 
2 
1.82 
2 
14.04 
3 
3.91 
Gulf of Alaska 
18 
31.28 
12 
2.62 
12 
11.71 
18 
8.82 
Among 
3 
5.51 
2 
0.78 
2 
2.62 
3 
0.77 
Within 
15 
25.77 
10 
1.84 
10 
9.09 
15 
8.05 
Northern Gulf 
12 
20.83 
8 
1.84 
8 
8.22 
12 
7.13 
Southeast 
3 
4.94 
2 
0.00 
2 
0.87 
3 
0.92 
df 
PGM-1* 
df 
PROT-3 * 
df 
TPI-1* 
df 
Overall 
Total 
32 
27.40 
8 
18.22* 
8 
6.29 
256 
280.75 
Among 
4 
6.43 
1 
17.83** 
1 
0.58 
32 
72.71** 
Within 
28 
20.97 
7 
0.39 
7 
5.71 
224 
208.04 
Bering Sea 
4 
3.87 
1 
0.39 
1 
1.21 
32 
57.22 
Gulf of Alaska 
24 
17.10 
6 
0.00 
6 
4.50 
192 
150.82 
Among 
4 
3.01 
1 
0.00 
1 
0.77 
32 
24.49 
Within 
20 
14.09 
5 
0.00 
5 
3.73 
160 
126.33 
Northern Gulf 
16 
13.38 
4 
0.00 
4 
3.73 
128 
108.40 
Southeast 
4 
0.71 
1 
0.00 
1 
0.00 
32 
17.93 
* Test is significant at a = 0.05. 
** Test is significant at a = 0.01. 
