Evidence map›Paper›PMID 31575968›Full record

ArticleScientific reports2019

Combining ddPCR and environmental DNA to improve detection capabilities of a critically endangered freshwater invertebrate.

Quentin Mauvisseau, John Davy-Bowker, Mark Bulling, Rein Brys, Sabrina Neyrinck, Christopher Troth, Michael Sweet

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

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  18. Molecular Diagnostic Tools Applied for Assessing Microbial Water Quality.International journal of environmental research and public health · 2022
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Quentin MauvisseauAquatic Research Facility, Environmental Sustainability Research Centre, University of Derby, Derby, DE22 1GB, United Kingdom. quentin.mauvisseau@gmail.com.ORCID http://orcid.org/0000-0003-1215-2987
John Davy-BowkerFreshwater Biological Association, River Laboratory, East Stoke, Wareham, Dorset, BH20 6BB, United Kingdom.
Mark BullingAquatic Research Facility, Environmental Sustainability Research Centre, University of Derby, Derby, DE22 1GB, United Kingdom.
Rein BrysResearch Institute for Nature and Forest, Gaverstraat 4, 9500, Geraardsbergen, Belgium.
Sabrina NeyrinckResearch Institute for Nature and Forest, Gaverstraat 4, 9500, Geraardsbergen, Belgium.
Christopher TrothAquatic Research Facility, Environmental Sustainability Research Centre, University of Derby, Derby, DE22 1GB, United Kingdom.ORCID http://orcid.org/0000-0001-6403-9447
Michael SweetAquatic Research Facility, Environmental Sustainability Research Centre, University of Derby, Derby, DE22 1GB, United Kingdom.ORCID http://orcid.org/0000-0003-4983-8333

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Isogenus nubecula is a critically endangered Plecoptera species. Considered extinct in the UK, I. nubecula was recently rediscovered (in one location of the River Dee, Wales), after 22 years of absence. In a similar way to many other species of Perlodidae, I. nubecula could be utilised as a bio-indicator, for assessing water quality and health status of a given freshwater system. However, conventional monitoring of invertebrates via kick-sampling, is invasive and expensive (time consuming). Further, such methods require a high level of taxonomic expertise. Here, we compared the traditional kick-sampling method with the use of eDNA detection using qPCR and ddPCR-analyses. In spring 2018, we sampled eDNA from twelve locations on the River Dee. I. nubecula was detected using kick-sampling in five of these locations, three locations using both eDNA detection and kick-sampling and one location using eDNA detection alone - resulting in a total of six known and distinct populations of this critically endangered species. Interestingly, despite the eDNA assay being validated in vitro and in silico, and results indicating high sensitivity, qPCR analysis of the eDNA samples proved to be ineffective. In contrast, ddPCR analyses resulted in a clear detection of I. nubecula at four locations suggesting that inhibition most likely explains the large discrepancy between the obtained qPCR and ddPCR results. It is therefore important to explore inhibition effects on any new eDNA assay. We also highlight that ddPCR may well be the best option for the detection of aquatic organisms which are either rare or likely to shed low levels of eDNA into their environment.

Indexed as

Endangered SpeciesAnimalsDNAFresh WaterInsectaPolymerase Chain ReactionRiversSentinel SpeciesWalesWater QualityDNA

Identifiers

PMID31575968
PMCPMC6773776

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.