Kastelle et al. : Age validation of Microstomas pacificus by means of bomb radiocarbon 
379 
TabSe 1 
Age estimates (in years) and radiocarbon measurements from Dover sole (Microstomus pacificus) otoliths collected from the 
Gulf of Alaska. Category 1 represents easy-to-age specimens and category 2 represents difficult-to-age specimens. Estimated 
birth year was calculated from final age and known capture date. The final ages are re-evaluated ages undertaken in 
the current study after initial aging for stock assessments. Postmeasurement min. -max. ages were generated after the 
radiocarbon values were known. Results are reported as 4 14 C (which is defined in Stuiver and Polach [1977] as the relative 
difference between an international standard [base year 1950] and sample activity), 4 14 C 95% confidence intervals (Cl) were 
derived from accelerator mass spectrometry error, and the <5 13 C measurements were used to correct for natural effects of 
isotopic fractionation. 
Specimen no. 
Category 
Estimated 
birth year 
Age estimates (years) 
Postmeasurement 
Final min. -max. 
h 14 C 
(%o) 
4 14 C 
95% Cl 
<5 13 C 
(%c) 
3 
1 
1972 
12 
80.7 
7.2 
-1.34 
11 
1 
1965 
33 
43.8 
6.8 
-1.86 
17 
1 
1968 
30 
80.9 
8.4 
-1.99 
18 
1 
1963 
35 
27.2 
7.8 
-1.6 
20 
1 
1974 
24 
57.6 
7.0 
-1.5 
21 
1 
1957 
41 
-86.3 
6.2 
-0.97 
24 
1 
1958 
47 
-68.0 
6.0 
-1.65 
34' 
1 
1953 
45 
-108.1 
5.6 
-0.97 
36 
1 
1974 
10 
80.3 
7.2 
-1.77 
48 
1 
1959 
39 
-64.9 
6.6 
-1.12 
49 
1 
1969 
29 
81.5 
7.4 
-1.06 
54 
1 
1957 
27 
-76.2 
6.6 
-0.98 
66 
1 
1960 
24 
-65.2 
8.0 
-1.11 
73 
1 
1964 
20 
49.2 
10.2 
-2.26 
82 
1 
1966 
32 
68.0 
7.2 
-2.03 
84 
1 
1977 
21 
36.2 
8.0 
-1.88 
85 
1 
1966 
32 
86.4 
8.2 
-1.26 
89 
1 
1959 
39 
-84.7 
7.0 
-1.14 
102 
1 
1967 
31 
73.7 
8.2 
-1.12 
130 
1 
1964 
34 
38.3 
7.8 
-0.76 
138 
1 
1969 
15 
72.7 
6.6 
-1.4 
143 
1 
1953 
31 
-108.2 
5.6 
-0.7 
157 i 
1 
1970 
28 
57.5 
6.6 
-0.95 
159 
1 
1976 
8 
72.6 
10.0 
-1.88 
160 
1 
1962 
36 
21.4 
7.6 
-2.07 
210 
1 
1951 
33 
-109.5 
5.4 
-0.57 
273 
1 
1963 
21 
9.5 
8.6 
-2.06 
302 
1 
1975 
9 
64.9 
9.8 
-1.53 
33 
1 
1959 
39 
-52.7 
6.2 
-1.92 
34' 
1 
1963 
35 
41.5 
9.0 
-1.6 
35 
1 
1970 
28 
54.3 
6.4 
-1.17 
52 
1 
1969 
29 
83.6 
8.4 
-1.66 
71 
1 
1955 
43 
-86.7 
5.6 
-0.71 
157' 
1 
1974 
10 
62.2 
6.8 
-1.06 
201 
1 
1955 
29 
-104.3 
6.4 
-1.32 
257 
1 
1966 
18 
38.0 
6.8 
-1.34 
271 
1 
1972 
12 
67.3 
8.2 
-1.41 
310 
1 
1967 
17 
52.3 
7.2 
-2.78 
95 
2 
1957 
48 
37-50 
-120.1 
5.8 
-1.59 
146 
2 
1958 
26 
16-26 
75.7 
10.2 
-0.84 
188 
2 
1953 
52 
37-59 
-105.1 
6.8 
-0.92 
225 
2 
1964 
20 
17-32 
56.9 
7.2 
-1.33 
317 
2 
1961 
23 
19-23 
54.7 
10.2 
-1.41 
1 Specimens with repeated identification numbers do not represent repeat measurements but are different specimens with the same identification 
numbers from different collection years. 
