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USFWS Scientists Examine Adaptation to Thiamine Deficiency in New Paper

The cover article in the April issue of Molecular Ecology estimates the adaptive genetic potential of landlocked Atlantic salmon to respond to thiamine deficiency and shows how scientists are using adaptive management at White River National Fish Hatchery and Dwight D. Eisenhower National Fish Hatcheries to help with the restoration of salmon in Lake Champlain. This paper was authored by researchers from Purdue University and the U.S. Fish and Wildlife Service Lake Champlain Fish and Wildlife Conservation Office.

Scientists are moving on to next steps of evaluating the survival and reproductive success of smolts stocked into Lake Champlain from the Low Thiamine Tolerant and Maximum Genetic Diversity broodstocks at White River National Fish Hatchery developed in parallel with this study. The first smolts will be stocked into the Winooski River and Boquet River in spring of 2021.  Hopefully, we will see increased survival and reproductive success of smolts stocked from the Low Thiamine Tolerant broodstock.

Harder, A.M., Willoughby, J.R., Ardren, W.R. and Christie, M.R., 2019. Among\family variation in survival and gene expression uncovers adaptive genetic variation in a threatened fish. Molecular Ecology. 29:1035C1049.

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