Individual genotypes from environmental DNA: Fingerprinting snow tracks of three large carnivore species.

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State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_155D77B41AD3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Individual genotypes from environmental DNA: Fingerprinting snow tracks of three large carnivore species.
Journal
Molecular Ecology Resources
Author(s)
De Barba M., Baur M., Boyer F., Fumagalli L., Konec M., Miquel C., Pazhenkova E., Remollino N., Skrbinšek T., Stoffel C., Taberlet P.
ISSN
1755-0998 (Electronic)
ISSN-L
1755-098X
Publication state
Published
Issued date
2024
Peer-reviewed
Oui
Volume
24
Pages
e13915
Language
english
Notes
Publication types: Journal Article
Publication Status: aheadofprint
Abstract
Continued advancements in environmental DNA (eDNA) research have made it possible to access intraspecific variation from eDNA samples, opening new opportunities to expand non-invasive genetic studies of wildlife populations. However, the use of eDNA samples for individual genotyping, as typically performed in non-invasive genetics, still remains elusive. We present successful individual genotyping of eDNA obtained from snow tracks of three large carnivores: brown bear (Ursus arctos), European lynx (Lynx lynx) and wolf (Canis lupus). DNA was extracted using a protocol for isolating water eDNA and genotyped using amplicon sequencing of short tandem repeats (STR), and for brown bear a sex marker, on a high-throughput sequencing platform. Individual genotypes were obtained for all species, but genotyping performance differed among samples and species. The proportion of samples genotyped to individuals was higher for brown bear (5/7) and wolf (7/10) than for lynx (4/9), and locus genotyping success was greater for brown bear (0.88). The sex marker was typed in six out of seven brown bear samples. Results for three species show that reliable individual genotyping, including sex identification, is now possible from eDNA in snow tracks, underlining its vast potential to complement the non-invasive genetic methods used for wildlife. To fully leverage the application of snow track eDNA, improved understanding of the ideal species- and site-specific sampling conditions, as well as laboratory methods promoting genotyping success, is needed. This will also inform efforts to retrieve and type nuclear DNA from other eDNA samples, thereby advancing eDNA-based individual and population-level studies.
Keywords
eDNA-based population studies, high-throughput STR genotyping by sequencing, individual identification, large carnivores, non-invasive genetics, snow track sampling
Pubmed
Web of science
Open Access
Yes
Create date
25/11/2023 12:22
Last modification date
07/03/2024 8:13
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