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Modelling the effects of diurnal temperature variation on malaria infection dynamics in mosquitoes

Abstract:
Mosquito infection experiments that characterise how sporogony changes with temperature are increasingly being used to parameterise malaria transmission models. In these experiments, mosquitoes are exposed to a range of temperatures, with each group experiencing a single temperature. Diurnal temperature variation can, however, affect the sporogonic cycle of Plasmodium parasites. Mosquito dissection data is not available for all temperature profiles, so we investigate whether mathematical models of mosquito infection parameterised with constant temperature thermal performance curves can predict the effects of diurnal temperature variation. We use this model to predict two key parameters governing disease transmission: the human-to-mosquito transmission probability and extrinsic incubation period – and, embed this model into a malaria transmission model to simulate sporozoite prevalence with and without the effects of diurnal and seasonal temperature variation for a single site in Burkina Faso. Simulations incorporating diurnal temperature variation better predict changes in sporogony in laboratory mosquitoes, indicating that constant temperature experiments can be used to predict the effects of fluctuating temperatures. Including the effects of diurnal temperature variation, however, did not substantially improve the predictive ability of the transmission model to predict changes in sporozoite prevalence in wild mosquitoes, indicating further research is needed in more settings.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s42003-025-07949-5

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Role:
Author
ORCID:
0000-0003-4612-5004
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Role:
Author
ORCID:
0000-0002-3598-8800
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Role:
Author
ORCID:
0000-0003-1761-0019
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Role:
Author
ORCID:
0000-0002-6627-1490


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Funder identifier:
https://ror.org/03x94j517
Funding agency for:
Stopard, IJ
Churcher, TS
Grant:
MR/X020258/1
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Funder identifier:
https://ror.org/029chgv08
Grant:
226072/Z/22/Z
200222/Z/15/Z
Funding agency for:
Sanou, A
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Funder identifier:
https://ror.org/02b5d8509
Funding agency for:
Stopard, IJ
Grant:
NE/P012345/1
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Funder identifier:
https://ror.org/021nxhr62
Grant:
DEB-1518681
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Funder identifier:
https://ror.org/043z4tv69
Grant:
R01AI110793


Publisher:
Nature Research
Journal:
Communications Biology More from this journal
Volume:
8
Issue:
1
Article number:
581
Publication date:
2025-04-08
Acceptance date:
2025-03-04
DOI:
EISSN:
2399-3642
ISSN:
2399-3642


Language:
English
Pubs id:
2093477
Local pid:
pubs:2093477
Deposit date:
2025-03-05
ARK identifier:

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