Willamette Institute of Continued Learning Pre spawn Mortality in Oregon Chinook Salmon

The presentation covers investigations on the cause of prespawn mortality (PSM) in adult Chinook Salmon in Oregon, which in some river systems often exceeds 50% in certain years. The researchers lead studies on the role of pathogens and specific pathologic changes in this phenomenon, and most recently they have discovered a severe intestinal disease/premature senescence that is correlated with PSM.