2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2021 | 2:00 PM - 3:30 PM | Effect of microorganisms on eDNA degradation | Virtual Platform
Effect of microorganisms on eDNA degradation
Environmental DNA (eDNA) is DNA shed into the environment by an organism. Isolating eDNA from environmental samples allows researchers to identify what organisms have been present in the area. But quantification of eDNA amounts is complicated by variation in degradation rates, which makes estimating organism abundance or how long ago the animal shed the DNA difficult. Recent studies suggest the rate of eDNA degradation may be most heavily influenced by bacteria. Bacteria and other microorganisms consume eDNA as a source of phosphorus and nitrogen, and may shorten how long an eDNA fragment remains detectable from four weeks to less than a day. To investigate this, we measured degradation rate of eDNA under different levels of bacteria concentrations. Clarifying the degree to which bacteria impact eDNA degradation will inform future eDNA studies and improve the accuracy of estimations of species presence and abundance based on eDNA.
- Ecosystem Dynamics
- Genomics
- Monitoring
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Presenters/Authors
Emma Teall
(), California State University Monterey Bay, eteall@csumb.edu;
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John Olson
(), Dept of Applied Environmental Science, California State University Monterey Bay, CA, USA, joolson@csumb.edu;
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