Skip to main content

Lisette Waits

thumbnail
What is Environmental DNA?DNA, short for deoxyribonucleic acid, is the hereditary material in organisms that contains the biological instructions for building and maintaining them. The chemical structure of DNA is the same for all organisms, but differences exist in the order of the DNA building blocks, known as base pairs. Unique sequences of base pairs, particularly repeating patterns, provide a means to identify species, populations, and even individuals.Environmental DNA (eDNA) is nuclear or mitochondrial DNA that is released from an organism into the environment. Sources of eDNA include secreted feces, mucous, and gametes; shed skin and hair; and carcasses. eDNA can be detected in cellular or extracellular...
thumbnail
The goal of this study is to use eDNA as a cost effective tool for documenting the occurrence and distribution of ESA-listed spring-chinook (Oncorhynchus tshawytscha) throughout the Okanogan and Methow watersheds in an effort to map habitat use and connectivity. Our approach will use eDNA to detect low density spring-chinook in filtered water samples to inventory distribution and re-colonization of tributaries at strategically-sampled points throughout entire stream networks. This approach will provide one of the first applications of eDNA technology for monitoring distribution of native fish species of conservation concern. The findings will help the Colville Tribe Fisheries Managers assess aquatic connectivity...
ScienceBase brings together the best information it can find about USGS researchers and offices to show connections to publications, projects, and data. We are still working to improve this process and information is by no means complete. If you don't see everything you know is associated with you, a colleague, or your office, please be patient while we work to connect the dots. Feel free to contact sciencebase@usgs.gov.