202 
Fishery Bulletin 1 10(2) 
6 1 
5 - 
O 
▲ 
▲ 
o 
O Other resident reef dwelling 
A Transient 
□ Subadult rockfishes 
■ Adult rockfishes 
O 
o 
o 
□ 
-1 
1 2 3 4 5 6 7 
9 10 11 12 13 14 
Prey category rank 
Figure 6 
Mean relative prey “preference” (Johnson’s [19801 - t) of 186 
lingcod ( Ophiodon elongatus ) captured at two sites off Oregon 
containing prey from 14 prey categories, listed from most 
preferred (rank 1) to least preferred (rank 14). Values with 
the same underline are not significantly different (P>0.05, 
Waller-Duncan multiple comparison). Rank numbers identify 
prey categories as listed in Table 1. Both juvenile and adult 
rockfishes ( Sebastes spp.) were significantly avoided as prey 
types in comparison with all other prey groups. 
for help with Figure 1; three anonymous reviewers; and 
Captain J. W. Cheesman (1962-2011). 
Literature cited 
Anderson, W. B., and G. A. Polis. 
1998. Marine subsidies of island communities in the 
Gulf of California: evidence from stable carbon and 
nitrogen isotopes. Oikos 81:75-80. 
Ault, J. S., S. G. Smith, J. A. Bohnsack, J. Luo, D. E. Harper, and 
D. B. McClellan. 
2006. Building sustainable fisheries in Florida’s coral reef 
ecosystem: positive signs in the Dry Tortugas. Bull. 
Mar. Sci. 73:633-654. 
Baum, J. K., and B. Worm. 
2009. Cascading top-down effects of changing oceanic 
predator abundances. J. Anim. Ecol. 78:699-714. 
Beaudreau, A. H., and T. E. Essington. 
2007. Spatial, temporal, and ontogenetic patterns of 
predation on rockfishes by lingcod. Trans. Am. Fish. 
Soc. 136:1438-1452. 
2009. Development of a new field-based approach for 
estimating consumption rates of fishes and comparison 
with a bioenergetics model for lingcod ( Ophiodon elon- 
gatus). Can. J. Fish. Aquat. Sci. 66:565-578. 
Bock, C. E. 
1987. Distribution-abundance relationships of some Ari- 
zona landbirds: A matter of scale? Ecology 68:124-129. 
Bohnsack, J. A. 
1996. Two visually based methods for monitoring coral 
reef fishes. In Coral reef symposium on practical, reli- 
able, low cost monitoring methods for assessing the biota 
and habitat conditions of coral reefs, January 26-27, 
1995 (M. P. Crosby, G. R. Gibson, and K. W. Potts, 
eds.), p. 31-36. Office of Ocean and Coastal Resource 
Management, NOAA, Silver Spring, MD. 
Bruno, J. F., and M. I. O’Connor. 
2005. Cascading effects of predatory diversity and 
omnivory in a marine food web. Ecol. Lett. 8:1048-1056. 
Chaneton, E. J., and M. B. Bonsall. 
2000. Enemy-mediated apparent competition: empirical 
patterns and the evidence. Oikos 88:380-394. 
Clarke, K. R. 
1993. Non-parametric multivariate analyses of changes 
in community structure. Aust. J. Ecol. 18:117-143. 
Clarke, K. R., and R. N. Gorley. 
2006. Primer, vers. 6: User manual/tutorial. PRIMER- 
E, Plymouth, U.K. 
Coleman, F. C., and C. C. Koenig. 
2010. The effects of fishing, climate change, and other 
anthropogenic disturbances on red grouper and other 
reef fishes in the Gulf of Mexico. Integ. Comp. Biol. 
50:201-212. 
Cowan Jr., J. H., C. B. Grimes, W. F. Patterson III, C. J. Walters, 
A. C. Jones, W. J. Lindberg, D. J. Shelby, W. E. Pine III, J. E. 
Powers, M. D. Campbell, K. C. Lindeman, S. L. Diamond, R. 
Hilborn, H. T. Gibson, and K. A. Rose. 
2010. Red snapper management in the Gulf of Mexico: sci- 
ence- or faith-based? Rev. Fish. Biol. Fish. 21:187-204. 
Creel, S., and D. Christianson. 
2007. Relationships between direct predation and risk 
effects. Trends Ecol. Evol. 23:194-201. 
