Evidence map›Paper›PMID 24911425›Full record

ArticleJournal of insect physiology2014

Ambient temperature and dietary supplementation interact to shape mosquito vector competence for malaria.

Courtney C Murdock, Simon Blanford, Shirley Luckhart, Matthew B Thomas

Open access · greenAbstract read
In one paragraph

Article in Journal of insect physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. A Systematic Review of the Effects of Temperature onInternational journal of environmental research and public health · 2021
    Pooled it
  2. Article
  3. Thermal adaptation inProceedings. Biological sciences · 2025
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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

4 authors at 2 institutions in 1 country.

Courtney C MurdockCenter for Infectious Disease Dynamics, Department of Entomology, Pennsylvania State University, Merkle Lab, Orchard Road, University Park, PA 16802, United States. Electronic address: ccm15@psu.edu.
Simon BlanfordCenter for Infectious Disease Dynamics, Department of Entomology, Pennsylvania State University, Merkle Lab, Orchard Road, University Park, PA 16802, United States. Electronic address: stb13@psu.edu.
Shirley LuckhartDepartment of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA 95616, United States. Electronic address: sluckhart@ucdavis.edu.
Matthew B ThomasCenter for Infectious Disease Dynamics, Department of Entomology, Pennsylvania State University, Merkle Lab, Orchard Road, University Park, PA 16802, United States. Electronic address: mbt13@psu.edu.
Pennsylvania State University · USUniversity of California, Davis · US

Funding

Effects of temperature on mosquito immunity and vector competence: do some like iR21AI096036 · NIAID · PENNSYLVANIA STATE UNIVERSITY, THE · PI THOMAS, MATTHEW B · 2011 to 2012
$405k
NIAID NIH HHS R21 AI096036NIAID NIH HHS R21 AI096036-01
6 · The paper itself

Abstract

The extent to which environmental factors influence the ability of Anopheles mosquitoes to transmit malaria parasites remains poorly explored. Environmental variation, such as change in ambient temperature, will not necessarily influence the rates of host and parasite processes equivalently, potentially resulting in complex effects on infection outcomes. As proof of principle, we used Anopheles stephensi and the rodent malaria parasite, Plasmodium yoelii, to examine the effects of a range of constant temperatures on one aspect of host defense (detected as alterations in expression of nitric oxide synthase gene - NOS) to parasite infection. We experimentally boosted mosquito midgut immunity to infection through dietary supplementation with the essential amino acid l-Arginine (l-Arg), which increases midgut nitric oxide (NO) levels by infection-induced NOS catalysis in A. stephensi. At intermediate temperatures, supplementation reduced oocyst prevalence, oocyst intensity, and sporozoite prevalence suggesting that the outcome of parasite infection was potentially dependent upon the rate of NOS-mediated midgut immunity. At low and high temperature extremes, however, infection was severely constrained irrespective of supplementation. The effects of l-Arg appeared to be mediated by NO-dependent negative feedback on NOS expression, as evidenced by depressed NOS expression in l-Arg treated groups at temperatures where supplementation decreased parasite infection. These results suggest the need to consider the direct (e.g. effects of mosquito body temperature on parasite physiology) and indirect effects (e.g. mediated through changes in mosquito physiology/immunity) of environmental factors on mosquito-malaria interactions in order to understand natural variation in vector competence.

Indexed as

Host-Parasite InteractionsAnimalsAnophelesArginineDigestive SystemGene ExpressionInsect VectorsMalariaNitric OxideNitric Oxide SynthaseOocystsPlasmodium yoeliiSporozoitesTemperatureArginineNitric OxideNitric Oxide SynthaseAmbient temperatureArginineImmunityMalariaMosquitoNitric oxide

Identifiers

PMID24911425
PMCPMC4107084
OpenAlexW2147648315

What OpenQuestion holds

Textmetadata
LicenceTDM
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.