Salmon spawn fierce debate over protecting endangered species, thanks to a single gene-Science Magazine


interesting news…big possible impacts for dam removal projects.

…Researchers had concluded that the Klamath’s spring-run Chinook are genetically similar to fall-run Chinook.

New research findings, however, are forcing scientists and federal officials to revisit that decision. In 2017, researchers announced that they’d identified a single gene that appears to control whether Chinook salmon, as well as steelhead, a closely related species of rainbow trout, migrate upriver before or after reaching sexual maturity. They concluded that the genetic change that produced spring-run Chinook occurred only once in the species’s history.

http://www.sciencemag.org/news/2018/05/salmon-spawn-fierce-debate-over-protecting-endangered-species-thanks-single-gene

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