Loher et al.: Growth of Paralithodes camtschaticus 
583 
Modal mean carapace length 
Figure 8 
Mean CL ±1 SD of all strong size modes of Bristol Bay red king crabs appearing in the annual length- 
frequency data from NMFS Bering Sea trawl surveys, 1975-1999; only modes with mean CL <100 mm 
are plotted. Size modes are plotted in length-sequential order along the x-axis, starting with the smallest 
observed mean CL. The numbers adjacent to each mode indicate the year during which that mode was 
observed. A grouping of modes separate from the remaining data, indicated by the dashed line and the 
arrow, likely represents a discrete age class; these small crabs are most likely age 2.9 (refer to Fig. 4). The 
remaining observations are continuous; substantial size overlap between consecutive modes suggest that 
discrete size-at-age categories are lacking at >~40 mm mean CL. 
Year 
Figure 9 
Area-averaged June bottom temperatures in the Bristol Bay region from 1975 to 
1999. The five-year running averages represent a five-year period that includes 
the plotted date and the four years preceding it; for example, the five-year average 
temperature plotted at 1981 (3.0°C) represents mean area-averaged temperature 
from 1977 to 1981. 
