Evidence map›Paper›PMID 31500667›Full record

ArticleParasites & vectors2019

Lack of influence by endosymbiont Wolbachia on virus titer in the common bed bug, Cimex lectularius.

Michael L Fisher, Jay F Levine, James S Guy, Hiroyuki Mochizuki, Matthew Breen, Coby Schal, David W Watson

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Counting rareMicrobiology spectrum · 2025
    Article
  3. Article
  4. Detection, Quantification, and Elimination of Wolbachia in Bed Bugs.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  5. Pathogens and global health · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. 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

7 authors at 1 institution in 1 country.

Michael L FisherDepartment of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA. ento4life@gmail.com.
Jay F LevineDepartment of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USA.
James S GuyDepartment of Population Health and Pathobiology, North Carolina State University, Raleigh, NC, 27607, USA.
Hiroyuki MochizukiDepartment of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, USA.
Matthew BreenDepartment of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, USA.
Coby SchalDepartment of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA.
David W WatsonDepartment of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA.
North Carolina State University · US

Funding

W. M. Keck Foundation 2016scholarship
6 · The paper itself

Abstract

backgroundThe common bed bug, Cimex lectularius, is an obligatory blood-feeding ectoparasite that requires a blood meal to molt and produce eggs. Their frequent biting to obtain blood meals and intimate association with humans increase the potential for disease transmission. However, despite more than 100 years of inquiry into bed bugs as potential disease vectors, they still have not been conclusively linked to any pathogen or disease. This ecological niche is extraordinarily rare, given that nearly every other blood-feeding arthropod is associated with some type of human or zoonotic disease. Bed bugs rely on the bacteria Wolbachia as an obligate endosymbiont to biosynthesize B vitamins, since they acquire a nutritionally deficient diet, but it is unknown if Wolbachia confers additional benefits to its bed bug host. In some insects, Wolbachia induces resistance to viruses such as Dengue, Chikungunya, West Nile, Drosophila C and Zika, and primes the insect immune system in other blood-feeding insects. Wolbachia might have evolved a similar role in its mutualistic association with the bed bug. In this study, we evaluated the influence of Wolbachia on virus replication within C. lectularius.

methodsWe used feline calicivirus as a model pathogen. We fed 40 bed bugs from an established line of Wolbachia-cured and a line of Wolbachia-positive C. lectularius a virus-laden blood meal, and quantified the amount of virus over five time intervals post-feeding. The antibiotic rifampicin was used to cure bed bugs of Wolbachia.

resultsThere was a significant effect of time post-feeding, as the amount of virus declined by ~90% over 10 days in both groups, but no significant difference in virus titer was observed between the Wolbachia-positive and Wolbachia-cured groups.

conclusionsThese findings suggest that other mechanisms are involved in virus suppression within bed bugs, independent of the influence of Wolbachia, and our conclusions underscore the need for future research.

Indexed as

Microbial InteractionsViral LoadAnimalsBedbugsCalicivirus, FelineWolbachiaCimex lectulariusCimicidaeEndosymbiontssRNAVirus suppressionWolbachia

Identifiers

PMID31500667
PMCPMC6734260
OpenAlexW2972637012

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.