130 
Fishery Bulletin 116(2) 
Table 2 
Total number of Dungeness crab (Cancer magister) that were tagged and released between October 2012 and April 
2014 and whose tags were returned, by fishery (commercial ocean off Oregon and recreational in Yaquina Bay, Oregon, 
by boat and shoreside). Totals are given by sex and shell hardness (combined), and reflex impairment score, which is 
equal to the number of absent reflexes (out of 6 reflexes assessed). 
Reflex impairment score 
0 
1 
2 
3 
4 
5 
6 
Total 
Commercial 
Total 
Tagged 
2432 
334 
85 
20 
5 
2 
6 
2884 
Returned 
242 
32 
4 
0 
0 
0 
0 
278 
Female hard-shell 
Tagged 
1429 
226 
70 
20 
5 
2 
6 
1758 
Returned 
86 
12 
3 
0 
0 
0 
0 
101 
Female soft-shell 
Tagged 
37 
5 
1 
- 
- 
- 
- 
43 
Returned 
1 
0 
0 
- 
- 
- 
- 
1 
Male hard-shell 
Tagged 
871 
97 
12 
- 
- 
- 
- 
980 
Returned 
148 
20 
1 
- 
- 
- 
- 
169 
Male soft-shell 
Tagged 
95 
6 
2 
- 
- 
- 
- 
103 
Returned 
7 
0 
0 
- 
- 
- 
- 
7 
Recreational-boat 
Total 
Tagged 
831 
57 
19 
2 
1 
0 
1 
911 
Returned 
108 
11 
2 
1 
0 
0 
0 
122 
Female hard-shell 
Tagged 
114 
9 
- 
- 
- 
- 
1 
124 
Returned 
6 
1 
- 
- 
- 
- 
0 
7 
Female soft-shell 
Tagged 
35 
2 
1 
- 
- 
- 
- 
38 
Returned 
2 
0 
0 
- 
- 
- 
- 
2 
Male hard-shell 
Tagged 
586 
38 
17 
1 
1 
- 
- 
643 
Returned 
87 
7 
1 
1 
0 
- 
- 
96 
Male soft-shell 
Tagged 
96 
8 
1 
1 
- 
- 
- 
106 
Returned 
13 
3 
1 
0 
- 
- 
- 
17 
Recreational-shoreside 
Total 
Tagged 
266 
22 
7 
3 
0 
0 
0 
298 
Returned 
29 
1 
0 
0 
0 
0 
0 
30 
Female hard-shell 
Tagged 
46 
- 
1 
1 
- 
- 
- 
48 
Returned 
4 
- 
0 
0 
- 
- 
- 
4 
Female soft-shell 
Tagged 
14 
- 
- 
- 
- 
- 
- 
14 
Returned 
0 
- 
- 
- 
- 
- 
- 
0 
Male hard-shell 
Tagged 
184 
20 
4 
1 
- 
- 
- 
209 
Returned 
23 
1 
0 
0 
- 
- 
- 
24 
Male soft-shell 
Tagged 
22 
2 
2 
1 
- 
- 
- 
27 
Returned 
2 
0 
0 
0 
- 
- 
- 
2 
Total 
Tagged 
3529 
413 
111 
25 
6 
2 
7 
4093 
Returned 
379 
44 
6 
1 
0 
0 
0 
430 
this was the place where fishermen returned tags for a 
previous Dungeness crab tagging study. We attempted 
to make the tag return process simple by providing 
multiple ways to exchange the tag for a reward, by 
requiring minimal paperwork, by allowing fishermen 
to be instantly rewarded with cash, and by distribut¬ 
ing tag-return packets that included tag-return forms, 
a pen, tape to attach the tag to the form, information 
on the project, and where to return tags, all inside a 
waterproof envelope. 
Relative short-term survival 
We compared relative short-term (5-d) survival data 
from the Yochum et al. (2017) laboratory study with 
data from the tag-return study described here to de¬ 
termine whether delayed mortality rates for discarded 
Dungeness crab were under- or over-estimated when 
using laboratory-based RAMP methods. We evaluated 
relative survival rates between score-0 crab (i.e., no 
reflex responses missing) and those with scores great¬ 
er than 0, using an approach described by Hueter et 
al. (2006). This analysis estimates relative survival 
between 2 conditions of animals (e.g., good vs. poor) 
and is done with the assumption that there is a dis¬ 
proportionate survival between the 2 conditions during 
a short-term “recovery period,” and that subsequent 
survival rates are assumed to be equal for both con¬ 
ditions. The “recovery period” was set at 5 d because 
the laboratory study considered mortalities only with- 
