Evidence map›Paper›PMID 32859251›Full record

ArticleParasites & vectors2020

Humic-acid-driven escape from eye parasites revealed by RNA-seq and target-specific metabarcoding.

Kristina Noreikiene, Mikhail Ozerov, Freed Ahmad, Toomas Kõiv, Siim Kahar, Riho Gross, Margot Sepp, Antonia Pellizzone, Eero J Vesterinen, Veljo Kisand and 1 more

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.1field-weighted citation impact, top 22% of its field
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

7 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. DNA barcodingCurrent research in parasitology & vector-borne diseases · 2026
    Review
  3. Article
  4. Article
  5. TrematodeFrontiers in immunology · 2024
    Article
  6. Subtle transcriptomic response of Eurasian perch (International journal for parasitology. Parasites and wildlife · 2023
    Article
  7. Article
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

11 authors at 3 institutions in 4 countries.

Kristina NoreikieneChair of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 46, 51006, Tartu, Estonia. kriste.noreikiene@gmail.com.ORCID http://orcid.org/0000-0001-7529-4902
Mikhail OzerovDepartment of Biology, University of Turku, 20014, Turku, Finland.
Freed AhmadDepartment of Biology, University of Turku, 20014, Turku, Finland.
Toomas KõivChair of Hydrobiology and Fishery, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, 51006, Tartu, Estonia.
Siim KaharChair of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 46, 51006, Tartu, Estonia.
Riho GrossChair of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 46, 51006, Tartu, Estonia.
Margot SeppChair of Hydrobiology and Fishery, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, 51006, Tartu, Estonia.
Antonia PellizzoneDepartment of Biology, University of Turku, 20014, Turku, Finland.
Eero J VesterinenBiodiversity Unit, University of Turku, 20014, Turku, Finland.
Veljo KisandInstitute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia.
Anti VasemägiChair of Aquaculture, Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 46, 51006, Tartu, Estonia. anti.vasemagi@slu.se.
Estonian University of Life Sciences · EEUniversity of Turku · FIUniversity of Tartu · EE

Funding

Academy of Finland 266321Eesti Teadusagentuur (EE) PRG852Eesti Teadusagentuur (EE) PUTJD954Estonian Ministry of Education and Research IUT 21-2Estonian Ministry of Education and Research IUT8-2European Regional Development Fund and the programme MobilitasPluss MOBJD344
6 · The paper itself

Abstract

backgroundNext generation sequencing (NGS) technologies are extensively used to dissect the molecular mechanisms of host-parasite interactions in human pathogens. However, ecological studies have yet to fully exploit the power of NGS as a rich source for formulating and testing new hypotheses.

methodsWe studied Eurasian perch (Perca fluviatilis) and its eye parasite (Trematoda, Diplostomidae) communities in 14 lakes that differed in humic content in order to explore host-parasite-environment interactions. We hypothesised that high humic content along with low pH would decrease the abundance of the intermediate hosts (gastropods), thus limiting the occurrence of diplostomid parasites in humic lakes. This hypothesis was initially invoked by whole eye RNA-seq data analysis and subsequently tested using PCR-based detection and a novel targeted metabarcoding approach.

resultsWhole eye transcriptome results revealed overexpression of immune-related genes and the presence of eye parasite sequences in RNA-seq data obtained from perch living in clear-water lakes. Both PCR-based and targeted-metabarcoding approach showed that perch from humic lakes were completely free from diplostomid parasites, while the prevalence of eye flukes in clear-water lakes that contain low amounts of humic substances was close to 100%, with the majority of NGS reads assigned to Tylodelphys clavata.

conclusionsHigh intraspecific diversity of T. clavata indicates that massively parallel sequencing of naturally pooled samples represents an efficient and powerful strategy for shedding light on cryptic diversity of eye parasites. Our results demonstrate that perch populations in clear-water lakes experience contrasting eye parasite pressure compared to those from humic lakes, which is reflected by prevalent differences in the expression of immune-related genes in the eye. This study highlights the utility of NGS to discover novel host-parasite-environment interactions and provide unprecedented power to characterize the molecular diversity of cryptic parasites.

Indexed as

AnimalsDNA, HelminthEyeFish DiseasesHost-Parasite InteractionsHumansHumic SubstancesLakesPerchesPolymerase Chain ReactionRNA-SeqSnailsTrematodaTrematode InfectionsDNA, HelminthHumic SubstancesDiplostomidaeHost-parasite interactionHumic substancesMetabarcodingPerca fluviatilisRNA-seq

Identifiers

PMID32859251
PMCPMC7456052
OpenAlexW3082242605

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.