Run Timing, Migratory Patterns, and Harvest Information of Chinook Salmon Stocks within the Yukon River. Alaska Fisheries Technical Report Number 92

摘要

Chinook salmon (Oncorhynchus tshawytscha) spawn throughout the Yukon River drainage and support important subsistence and commercial fisheries. In the Yukon River, fisheries that harvest Chinook salmon are managed to meet established escapement and transboundary passage goals. Providing for fisheries and escapement is made difficult by the compressed return time and mixed-stock nature of the run (stock in this report refers to a particular river or stream where a collection was made). However, mixed-stock analysis (MSA), a method of estimating the proportion of individuals from different source stocks contributing to a mixture, can help management meet these obligations by supplying information to prevent excessive exploitation and protect genetic diversity, both essential for sustained salmon productivity.