Productivity of a Kokanee spawning channel
At some time in the past, circumstances were appropriate for the evolution of two types of kokanee salmon (Oncorhynchus nerka) in Okanagan Lake. Although all Okanagan Lake kokanee appear to live together under similar conditions during growth, at sexual maturity half migrate to their place of hatching in streams, while the other half migrate to their place of hatching along the lake shore-line. In this study I describe the similarities and differences in the spawning behaviour of stream- and shore-spawning kokanee salmon, and attempt to explain the causation of the differences.
See Also  links to the Kokanee Salmon Heritage Project.
See Also  links to the abstract of Dr. Dill’s presentation Kokanee in Okanagan Lake.