Feds may look at spring-run chinook salmon as genetically distinct
The National Marine Fisheries Service is considering whether the spring-run and fall-run Chinook salmon that occupy the rivers of Northern California and southern Oregon are genetically distinct. The decision … would almost certainly result in a listing under the Endangered Species Act if seen as a separate species. … [T]he dams and reservoirs that have been installed at various points throughout the rivers of the West Coast create problems for spring-run Chinook that are unique and separate from their closely related cousins. It also allows the fall-run species to outcompete the spring run since they both are able to reach the same spots in the river to reproduce.
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