Evidence map›Paper›PMID 35730338›Full record

ArticleMolecular ecology resources2022

Environmental nucleic acids: A field-based comparison for monitoring freshwater habitats using eDNA and eRNA.

Joanne E Littlefair, Michael D Rennie, Melania E Cristescu

Abstract read
In one paragraph

Article in Molecular ecology resources, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

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  20. Methodological considerations for aqueous environmental RNA collection, preservation, and extraction.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2023
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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

3 authors.

Joanne E LittlefairDepartment of Biology, McGill University, Montréal, Quebec, Canada.ORCID https://orcid.org/0000-0002-4481-0211
Michael D RennieIISD Experimental Lakes Area, Winnipeg, Manitoba, Canada.ORCID https://orcid.org/0000-0001-7533-4759
Melania E CristescuDepartment of Biology, McGill University, Montréal, Quebec, Canada.ORCID https://orcid.org/0000-0002-0854-4040

Funding

Canada Research Chairs 230517Canada Research Chairs 237170Mitacs IT08003Natural Sciences and Engineering Research Council of Canada 04331-2017Natural Sciences and Engineering Research Council of Canada 2016-04016Natural Sciences and Engineering Research Council of Canada 523760-2018Quebec Centre for Biodiversity ScienceWSP Montreal Environment department
6 · The paper itself

Abstract

Nucleic acids released by organisms and isolated from environmental substrates are increasingly being used for molecular biomonitoring. While environmental DNA (eDNA) has received much attention, the potential of environmental RNA as a biomonitoring tool remains under-explored. Several recent studies using paired DNA and RNA metabarcoding of bulk samples suggest that RNA might better reflect "metabolically active" parts of the community. However, such studies mainly capture organismal eDNA and eRNA. For larger eukaryotes, isolation of extra-organismal RNA will be important, but viability needs to be examined in a field-based setting. In this study we evaluate (a) whether extra-organismal eRNA release from macroeukaryotes can be detected given its supposedly rapid degradation, and (b) if the same field collection methods for eDNA can be applied to eRNA. We collected eDNA and eRNA from water in lakes where fish community composition is well documented, enabling a comparison between the two nucleic acids in two different seasons with monitoring using conventional methods. We found that eRNA is released from macroeukaryotes and can be filtered from water and metabarcoded in a similar manner as eDNA to reliably provide species composition information. eRNA had a small but significantly greater true positive rate than eDNA, indicating that it correctly detects more species known to exist in the lakes. Given relatively small differences between the two molecules in describing fish community composition, we conclude that if eRNA provides significant advantages in terms of lability, it is a strong candidate to add to the suite of molecular monitoring tools.

Indexed as

DNA, EnvironmentalNucleic AcidsAnimalsBiodiversityDNADNA Barcoding, TaxonomicEcosystemEnvironmental MonitoringFishesLakesRNAWaterDNADNA, EnvironmentalNucleic AcidsRNAWaterenvironmental DNAenvironmental RNAfishfreshwatermetabarcodingseasonality

Identifiers

PMID35730338
PMCPMC9796649

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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.