Watters and Dick: Length distributions of Sebastes spp. off central California 
297 
Greenspotted rockfish 
I 
35 i 
Canary rockfish 
>» 
Q 
e 
3 
O' 
5 10 15 20 25 30 35 40 45 50 
5 10 15 20 25 30 35 40 45 50 55 60 70 
1 40 
w 
b - 35 
30 
25 
20 
15 
10 
5 
0 
Total length (cm) 
Figure 3 
Length-frequency distributions of 4 species of rockfish (Sebastes spp.) on untrawlable 
high-relief habitat (UT, dark gray bars) and trawlable low relief habitat (T, hatched 
bars) from submersible surveys conducted off central California (36-37°N latitude) dur¬ 
ing 2003-2009. The solid and dashed vertical lines indicate the mean lengths of fish on 
untrawlable and trawlable habitats, respectively. 
Table 3 
Values of 10%, 50%, and 90% total length quantiles (cm) and results of a chi-square two- 
sample test in comparing length distributions of 4 species of rockfish (Sebastes spp.) from 
submersible surveys conducted in untrawlable and trawlable habitat off central California 
(36-37°N latitude) during 2003-2009. Length data were estimated to the nearest 5 cm. 
Species 
10%, 50%, 90% 
length quantiles, 
untrawlable habitat 
10%, 50%, 90% 
length quantiles, 
trawlable habitat 
Chi-square 
two-sample test 
Greenspotted rockfish 
10, 25, 40 
10, 15, 30 
235.33, df=9, P<0.001 
Greenstriped rockfish 
10, 20, 30 
5, 15, 25 
466.99, df=7, PcO.001 
Vermilion rockfish 
30, 40, 50 
35, 45, 50 
9.2217, df=9, P=0.4171 
Canary rockfish 
25, 40, 60 
15, 30, 45 
202.52, df=ll, P<0.001 
