284 
Fishery Bulletin 108(3) 
136°W 134“W 132"W 130°W 128°W 126"W 124°W 122“W 
I36°W 
134°W 
132°W 
13Q°W 
! 
128°W 
i 
126°W 
i 
124°W 122°W 
i !_ 
B 
Surveys 
' Haida Gwaii Groundfish 
j?H^| Hecate Strait Groundfish 
Queen Charlotte Sound Groundfish 
Queen Charlotte Sound Shrimp 
i=E==i West Coast Vancouver Island Groundfish 
HHm West Coast Vancouver Island Shrimp 
lll|||]iii U S. Triennial 
3 
British Columbia 
Vancouver 
Island 
200 100 
0 
200 Kilometers 
Can. 
USA^ 
-54°N 
-53°N 
-52°N 
■51 °N 
■50“N 
■49’N 
-48°N 
Figure 1 
(A) Locations where bocaccio ( Sebastes paucispinis ) were caught in commercial and 
research trawls, 2004-08. The 200-m depth contour is shown by a thin gray line. (B) 
Locations of trawl surveys in outside waters of British Columbia. 
for q„ ross to deviate from unity and may be conceived to 
act multiplicatively (Millar and Methot, 2002): 
Qgross ~~ Qnet x Qtrawlable X ^-available ’ 
where q net = the fraction of exploitable biomass that is 
within the path (i.e., between the trawl 
doors) of a given type of survey net and 
that is on average captured by the net; 
