| Summary: | Chinook salmon in western Alaska have experienced declines in productivity and the mechanisms driving these declines are poorly understood. Thiamine (vitamin B1) deficiency has been responsible for declines in numerous salmonid populations and its prevalence in western Alaska Chinook salmon was investigated in 2014 and 2015. The data associated with this study is contained in a Microsoft Excel format and describes where female Chinook salmon were sampled and the total egg thiamine concentration of their eggs. These data were created by using fluorescence spectroscopy coupled with High Performance Liquid Chromatography to measure thiamine concentrations in Chinook salmon eggs collected from the Yukon, Kuskokwim, and Unalakleet rivers. Eggs were collected from the Yukon, Unalakleet, and Kuskokwim rivers in July and August in 2014 and 2015. Column name definitions: Group = General grouping assigned to each Chinook salmon sampled; i.e., river system or reach of the Yukon River. River = River that the Chinook salmon was sampled from. Location = Specific tributary that the Chinook salmon was sampled. Total. Thiamine = The egg thiamine concentration for the Chinook salmon sampled, measured in nmol/g. LAT and LON = Latitude and longitude measurements, displayed in decimal degrees, for each sampling
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