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Journal article
The effect of bivalve filtration on eDNA-based detection of aquatic organisms
PloS one, Vol.14(11), p.e0222830
11/13/2019
PMCID: PMC6853284
PMID: 31721779
Web of Science ID: WOS:000532720700007
Abstract
As the use of environmental-DNA (eDNA) expands as a method to detect the presence and quantity of aquatic taxa, factors potentially impacting the efficacy of this technique must be investigated. Many studies have examined the effects of abiotic parameters on the degradation of environmental-DNA (e.g. UV radiation, pH, temperature, etc.), however, few have focused on biotic effectors. Through high-filtering rates coupled with dense colonization, Asian clams (Corbicula fluminea) are able to drastically alter the quantity of particulate matter through translocation into the sediment, potentially including sources of eDNA in lotic and lentic systems. Using a longitudinal, laboratory experiment, we tested the effect of varying densities of Asian clams on the translocation rate of common goldfish (Carassius auratus) DNA. Target DNA in testing tanks was quantified through quantitative PCR (qPCR) at regular intervals and compared. Tanks housing the highest density of Asian clams produced significantly lower DNA concentrations over time compared to tanks of lower densities. These results show, for the first time, a density-dependent reduction of local eDNA sources by bivalve filtration that may lead to the obstructed detection of target species through the sampling of eDNA. Based on these findings, we recommend highly concentrated bivalve populations be taken into consideration when choosing the time and locality of eDNA sampling efforts.
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- Title
- The effect of bivalve filtration on eDNA-based detection of aquatic organisms
- Publication Details
- PloS one, Vol.14(11), p.e0222830
- Resource Type
- Journal article
- Publisher
- Public Library Science
- Number of pages
- 9
- Grant note
- : CJ, KS, and RF were supported by Alabama Department of Conservation & Natural Resources (Grant#:G00012245)
- Copyright
- © 2019 Friebertshauser et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
- Identifiers
- WOS:000532720700007; 99380178358906600
- Academic Unit
- Hal Marcus College of Science and Engineering ; Biology
- Language
- English