G Boussarie
Environmental DNA illuminates the dark diversity of sharks
Boussarie, G; Bakker, Judith; Wangensteen Fuentes, OS; Mariani, S; Bonnin, L; Juhel, J-B; Kiszka, JJ; Kulbicki, M; Manel, S; Robbins, WD; Vigliola, L; Mouillot, D
Authors
Judith Bakker
OS Wangensteen Fuentes
S Mariani
L Bonnin
J-B Juhel
JJ Kiszka
M Kulbicki
S Manel
WD Robbins
L Vigliola
D Mouillot
Abstract
In the era of "Anthropocene defaunation," large species are often no longer detected in habitats where they formerly occurred. However, it is unclear whether this apparent missing, or "dark," diversity of megafauna results from local species extirpations or from failure to detect elusive remaining individuals. We find that despite two orders of magnitude less sampling effort, environmental DNA (eDNA) detects 44% more shark species than traditional underwater visual censuses and baited videos across the New Caledonian archipelago (south-western Pacific). Furthermore, eDNA analysis reveals the presence of previously unobserved shark species in human-impacted areas. Overall, our results highlight a greater prevalence of sharks than described by traditional survey methods in both impacted and wilderness areas. This indicates an urgent need for large-scale eDNA assessments to improve monitoring of threatened and elusive megafauna. Finally, our findings emphasize the need for conservation efforts specifically geared toward the protection of elusive, residual populations.
Citation
Boussarie, G., Bakker, J., Wangensteen Fuentes, O., Mariani, S., Bonnin, L., Juhel, J., …Mouillot, D. (2018). Environmental DNA illuminates the dark diversity of sharks. Science Advances, 4(5), eaap9661. https://doi.org/10.1126/sciadv.aap9661
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 16, 2018 |
Online Publication Date | May 2, 2018 |
Publication Date | May 2, 2018 |
Deposit Date | May 18, 2018 |
Publicly Available Date | May 18, 2018 |
Journal | Science Advances |
Publisher | American Association for the Advancement of Science |
Volume | 4 |
Issue | 5 |
Pages | eaap9661 |
DOI | https://doi.org/10.1126/sciadv.aap9661 |
Publisher URL | https://doi.org/10.1126/sciadv.aap9661 |
Related Public URLs | http://advances.sciencemag.org/ |
Additional Information | Funders : Total Foundation;Pew Charitable Trusts;Government of New Caledonia;University of Salford Projects : Pristine;APEX;e(lasmo)DNA |
Files
eaap9661.full.pdf
(1.4 Mb)
PDF
Licence
http://creativecommons.org/licenses/by-nc/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by-nc/4.0/
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