238 
Fishery Bulletin 115(2) 
zones; therefore, the effects of surface temperature 
were evaluated separately for each depth category. Us¬ 
ing logistic regressions, we compared recapture rates, 
hy warm and cool surface temperature categories, for 
each size group of small, medium, and large fish with¬ 
in each depth zone. A significant difference for zone 2 
fish was found only for small fish, with the probabil¬ 
ity of recapture increasing when surface temperatures 
at tagging were cooler (Table 3; Wald statistic: 4.4, 
P<0.001). For fish initially captured in zone 3, there 
were no significant differences between recapture rates 
of small, medium, or large fish for the tagging tempera¬ 
ture categories. However, the sample size for small fish 
was only a total of 25 recaptured fish and therefore 
limits our confidence in this result. 
Small-scale movements among depths 
Fish initially captured in depth zone 1 tended to 
be recaptured at deeper depths, with recaptures at 
depths from 124 to 1207 m (Figs. 3 and 4). However, 
55% of the recaptures were at depths within 200 m 
of the initial capture depth. Fish were recaptured 
at greater depths during the spawning season (from 
November through April) than during the nonspawn¬ 
ing season (ANCOVA: Fj 438=26.6, P<0.001). Recap¬ 
ture depths increased with time at large (Fj 438=29.4, 
F<0.001) but did not differ with fish size (Fi438=1.8, 
F=0.184). Fish initially captured in depth zone 2 
were recaptured at depths from 73 to 1220 m; how¬ 
ever, 86% of the recaptures were within 200 m of the 
initial depth. As observed for fish from depth zone 
1, depth of recapture was greater during the spawn¬ 
ing vs. nonspawning season (ANOVA: Fijo54=68.1, 
P<0.001), recapture depth increased with time at 
large (F^ io54=64.4, P<0.001), and there was no effect 
of initial fish size (F^ io54=3-0) P=0.081). Fish initially 
captured in zone 3 tended to be recaptured near their 
original depth or shallower, at depths from 238 to 
1280 m; 56% were recaptured within 200 m of their 
initial depth. In contrast to the result for fish from the 
shallower depth zones, recapture depth of zone 3 fish 
did not differ by season (ANOVA: F^ 253=0-2, P=0.698). 
Recaptures tended to be deeper with both increasing 
time at large (Fi 253=83.6, P<0.001), and with larger 
initial fish size (Fj 253=27.6, P<0.001). 
