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Molecular Ecology Laboratory

Molecular ecology is the study of the earth and its ecosystems through genetic methods. The objectives of our research program are to: Identify and fill gaps in our knowledge about species and population diagnosis, biodiversity, and the health of wildlife and their habitats to inform decision making by management agencies and provide molecular science applications and protocols for our partners.

Publications

Molecular detection and characterization of highly pathogenic H5N1 clade 2.3.4.4b avian influenza viruses among hunter-harvested wild birds provides evidence for three independent introductions into Alaska

We detected and characterized highly pathogenic avian influenza viruses among hunter-harvested wild waterfowl inhabiting western Alaska during September–October 2022 using a molecular sequencing pipeline applied to RNA extracts derived directly from original swab samples. Genomic characterization of 10 H5 clade 2.3.4.4b avian influenza viruses detected with high confidence provided evidence for th
Authors
Andrew M. Ramey, Laura Celeste Scott, Christina Ahlstrom, Evan James Buck, Alison Williams, Mia Kim Torchetti, David E. Stallknecht, Rebecca L. Poulson

The DDT-induced decline influenced genetic diversity in naturally-recovered peregrine falcons (Falco peregrinus) nesting within the Alaska Arctic and eastern Interior

We assessed the influence of the severe mid-20th century population decline on genetic diversity in non-augmented peregrine falcon (Falco peregrinus) populations nesting within Alaska Arctic and eastern Interior. Microsatellite and mitochondrial DNA (mtDNA) data were analyzed for peregrine falcons sampled from three periods: pre-decline, decline, and post-decline. The influence of the decline on g
Authors
Sarah A. Sonsthagen, Ted Swem, Skip Ambrose, Melanie J. Flamme, Clayton M White, George K Sage, Sandra L Talbot

Dynamic landscapes in northwestern North America structured populations of wolverines (Gulo gulo)

Cyclic climatic and glacial fluctuations of the Late Quaternary produced a dynamic biogeographic history for high latitudes. To refine our understanding of this history in northwestern North America, we explored geographic structure in a wide-ranging carnivore, the wolverine (Gulo gulo). We examined genetic variation in populations across mainland Alaska, coastal Southeast Alaska, and mainland wes
Authors
Dianna M Krejsa, Sandra L. Talbot, George K. Sage, Sarah A. Sonsthagen, Thomas S Jung, Audrey J Magoun, Joseph A. Cook

Science

Q&A: The Molecular Ecology Lab at the USGS Alaska Science Center

The Molecular Ecology Lab at the USGS Alaska Science Center provides genetic information on the health and status of biological resources for diverse local, state, and federal partners. Hypothesis-driven research projects are designed to fill data gaps and inform decisions for Department of Interior and other management agencies. The Molecular Ecology Lab research portfolio currently includes...
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Q&A: The Molecular Ecology Lab at the USGS Alaska Science Center

The Molecular Ecology Lab at the USGS Alaska Science Center provides genetic information on the health and status of biological resources for diverse local, state, and federal partners. Hypothesis-driven research projects are designed to fill data gaps and inform decisions for Department of Interior and other management agencies. The Molecular Ecology Lab research portfolio currently includes...
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