Slamgeesh Sockeye & Kokanee Interaction

It is generally assumed that the salmon species Oncorhynchus nerka exists in two forms, freshwater residents called ‘kokanee’ and an ocean-going form called ‘sockeye’, and that the two forms are separate and do not interbreed. However, if kokanee and ocean-going sockeye do sometimes interbreed, then current methods to estimate population size for management purposes will produce underestimates. The combined, larger population would be more resistant to environmental stresses from climate change and fishing. This project, led by the Gitksan Watershed Authorities, investigates the extent of kokanee-sockeye interbreeding at Slamgeesh Lake. The results will improve our ability to accurately monitor and assess the status of sockeye conservation units.

project objectives
Increase understanding of the interaction between sockeye and kokanee salmon in order to improve our ability to monitor and assess the status of sockeye conservation units.
project status
complete
project timeline
June 1, 2010
to April 30, 2011
project lead
Gitksan Watershed Authorities
subjects
life history, stock assessment
location
Slamgeesh Lake
related species
kokanee, sockeye