Evidence map›Paper›PMID 17711832›Full record

ArticleProceedings. Biological sciences2007

Transmission stage investment of malaria parasites in response to in-host competition.

Andrew R Wargo, Jacobus C de Roode, Silvie Huijben, Damien R Drew, Andrew F Read

Open access · hybridAbstract read
In one paragraph

Article in Proceedings. Biological sciences, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

48 citing papers in PubMed, 88 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. HIV-1 Impact on Malaria Transmission: A Complex and Relevant Global Health Concern.Frontiers in cellular and infection microbiology · 2021
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Prevalence of asymptomaticWellcome open research · 2020
    Article
  14. Frontiers in cellular and infection microbiology · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Competition between strains ofProceedings. Biological sciences · 2018
    Article
  19. Article
  20. 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

5 authors at 4 institutions in 2 countries.

Andrew R WargoInstitutes of Evolution, Immunology and Infection Research, Ashworth Laboratories, School of Biological Sciences, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh EH9 3JT, UK. awargo@u.washington.edu
Jacobus C de Roode
Silvie Huijben
Damien R Drew
Andrew F Read
Centre for Immunity, Infection and Evolution · GBUniversity of Edinburgh · GBUniversity of Georgia · USWestern Fisheries Research Center

Funding

Wellcome Trust
6 · The paper itself

Abstract

Conspecific competition occurs in a multitude of organisms, particularly in parasites, where several clones are commonly sharing limited resources inside their host. In theory, increased or decreased transmission investment might maximize parasite fitness in the face of competition, but, to our knowledge, this has not been tested experimentally. We developed and used a clone-specific, stage-specific, quantitative PCR protocol to quantify Plasmodium chabaudi replication and transmission stage densities in mixed-clone infections. We co-infected mice from two strains with an avirulent and virulent parasite clone and found competitive suppression of in-host (blood-stage) parasite densities and generally corresponding reductions in transmission stage production, with the virulent clone obtaining overall competitive superiority. In response to competitive suppression, there was little evidence of any alteration in transmission stage investment, apart from a small reduction by one of the two clones in one of the two host strains. This alteration did not result in a competitive advantage, although it might have reduced the disadvantage. This study supports much of the current literature, which predicts that conspecific in-host competition will result in a competitive advantage and positive selection for virulent clones and thus the evolution of higher virulence.

Indexed as

AnimalsFemaleHost-Parasite InteractionsMalariaMiceMice, Inbred C57BLMice, Inbred CBAPlasmodium chabaudi

Identifiers

PMID17711832
PMCPMC1975767
OpenAlexW1978546837

What OpenQuestion holds

Textmetadata
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.