The spawning of sockeye salmon on island beaches in Iliamna
Lake is predictable in space and time. Commencement date of
spawning usually varies by only a few days over years (e.g.,
Quinn and Foote 1994; this study). Spawning site locations are
also highly predictable over a broad scale (kilometres, Blair et
al. 1993) and a very fine scale (metres, Hendry et al. 1995). Our
results indicate that slimy and coastrange sculpins make significant
use of this highly predictable resource by feeding extensively
on salmon eggs.