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Fishery Bulletin 1 13(3) 
58" N 
57" N 
174° W 
172" W 
170" W 
Figure 1 
Release and recapture locations of morphometrically mature male snow crabs ( Chi - 
onoecetes opilio) tagged with data storage tags (DSTs) during 2010 and 2011 in the 
eastern Bering Sea, northwest of the Pribilof Islands, which include St. Paul Island. 
Small black triangles indicate releases in 2010 of crabs with DSTs and spaghetti- 
only tags. Large and small gray triangles indicate recaptures of DSTs and spaghetti 
tags, respectively, from crabs released in 2010. Small black squares indicate releases 
in 2011 of crabs with DSTs. Large gray squares indicate recaptures of DSTs from 
crabs released in 2011. Lines with numbers indicate contours of bottom depths. 
with 2 post-terminal-molt age categories represent- 
ing MM males that recently terminally molted (in the 
current year; having a new shell) or in previous years 
(having an older shell). The new- and older-shell cat- 
egories correspond to the shell conditions <2 and >3, 
respectively, as defined in Foy and Armistead (2013). 
MM males were distinguished from adolescent males 
by using a linear regression function relating ln(CH) to 
ln(CW) as calculated in Rugolo et al. 1 , where for each 
measured specimen s, MM status was assigned where 
qjj > g 1.2899xln(CW s )-2.8628 Q) 
Because crabs measured for CH were subsampled 
from the catch at each station, their numbers were 
extrapolated to the entire catch at each station. Also, 
because males subsampled for CH were too few in 
number (mean: 24/station/year) to examine geograph- 
ic distributions on an annual basis, data were pooled 
across years (1989-2011) for each station in the sur- 
vey. For each survey station i, the relative proportion 
of MM males (PROP) was calculated with the following 
equation: 
PROP, 
V^L 
( 2 ) 
where Ny = the extrapolated number of MM males at 
station i during year j. 
If CHs were not measured within a particular year and 
station, each missing value of Ny was estimated as the 
