1 / 6

Tracking Ghosts: using environmental DNA detection to find invasive & endangered species

Tracking Ghosts: using environmental DNA detection to find invasive & endangered species. Chris Wilson Aquatic Research and Development Section, OMNR. http://www.activistangler.com/journal/tag/mississippi-river. Environmental DNA (eDNA).

najila
Télécharger la présentation

Tracking Ghosts: using environmental DNA detection to find invasive & endangered species

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Tracking Ghosts: using environmental DNA detection to find invasive & endangered species Chris Wilson Aquatic Research and Development Section, OMNR

  2. http://www.activistangler.com/journal/tag/mississippi-river

  3. Environmental DNA (eDNA) • cells / DNA shed from living or dead organisms into surrounding environment • “molecular smoke alarm” • doesn’t say what the source was • living / dead; body parts; fluids, cells, free molecules, etc. • doesn’t tell re: age, sex, size, reproductive status, population info • positive detection= DNA from the species was present at that location when the sample was collected (photo: Leung et al. 2012)

  4. Identifying seasonal habitat use of endangered species (spotted gar)

  5. eDNA surveillance for Asian Carp in Lake Erie: rapid response to prevent establishment (photo courtesy of MN DNR) August 2011 samples July 2012 samples MNR samples (Sept-Nov 2012)

  6. qPCR faster and more sensitive than regular detection methods detect < 10 DNA copies in tests from water samples Community eDNA environmental metagenomics not specific to a particular species (non-targeted detection) determine what species are present in eDNA samples; potential detection of “new” invasive or endangered species moving forward: quantitative detection and community eDNA (species ‘roll call’)

More Related