Vol. 53 - Alaska Resources Library and Information Services

1+ crabs were found, no age 2 crabs and only one age 2+ crab was
encountered. Age 3, age 3+ and age 4 crabs totaled 31, 12 and 19,
respectively. A total of 38 age 4++ crabs was found, including eight
adult females.
The male:female ratios at ages 1, 3, 4 and 4++ were 0.67:1, 1.4:1, 2.2:1
and 1.1:1, respectively. No age 2 crabs were found. The total male:
female ratio for all juveniles through age 4 was 1.4:1 (Table 3.4-2).
Cruise 83-5 (9-23 September 1983). Epibenthic sampling for king crab in
September yielded 184 crabs collected at 13 stations (Table 3.4-3). The
population was composed of 79 (43%) males, 70 (38%) immature females, 35
(17%) crabs of unidentified sex and 3 (2%) adult females. The crabs
sampled during September measured from 3-117 mm carapace length. True
young-of-the-year crabs (3-8 mm) dominated, yielding 73% (n=134) of the
catch. Most of the young-of-the-year crabs (95%) were 4-5 mm. Age 1
crabs totaled 24; age 1+ crabs totaled 24. Crabs belonging to age
classes 2, 2+, 3, and 4 were not encountered. Only one crab was found
in the age 3+ class. Among the five crabs over four years old (age
4++), three were adult females.
The male:female ratios at ages 1 and 4++ were 0.6:1 and 0.25:1, respectively.
The male:female ratio of all juvenile crabs through age 4 was
1.1:1 (Table 3.4-3).
3.5 Juvenile Distribution and Abundance
The number of epifaunal samples and the number of stations sampled per
cruise are presented by sampling subarea in Table 3.5-1. The distributions
of samples by gear type are presented in Figures 3.5-1 through
3.5-3 and Appendix B. The inner and outer Bristol Bay (BB) subareas
were sampled primarily with the trynet; the Kvichak Bay (KB) subarea was
sampled primarily with the rock dredge. The remaining subareas were
sampled with both gear types, although the trynet was generally more
often used.
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