Publications des scientifiques de l'IRD

Vantaux Amélie, Lefèvre Thierry, Cohuet Anna, Dabire K. R., Roche Benjamin, Roux Olivier. (2016). Larval nutritional stress affects vector life history traits and human malaria transmission. Scientific Reports - Nature, 6, p. art. 36778 [10 p.]. ISSN 2045-2322.

Titre du document
Larval nutritional stress affects vector life history traits and human malaria transmission
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000387540900001
Auteurs
Vantaux Amélie, Lefèvre Thierry, Cohuet Anna, Dabire K. R., Roche Benjamin, Roux Olivier
Source
Scientific Reports - Nature, 2016, 6, p. art. 36778 [10 p.] ISSN 2045-2322
Exposure to stress during an insect's larval development can have carry-over effects on adult life history traits and susceptibility to pathogens. We investigated the effects of larval nutritional stress for the first time using field mosquito vectors and malaria parasites. In contrast to previous studies, we show that larval nutritional stress may affect human to mosquito transmission antagonistically: nutritionally deprived larvae showed lower parasite prevalence for only one gametocyte carrier; they also had lower fecundity. However, they had greater survival rates that were even higher when infected. When combining these opposing effects into epidemiological models, we show that larval nutritional stress induced a decrease in malaria transmission at low mosquito densities and an increase in transmission at high mosquito densities, whereas transmission by mosquitoes from well-fed larvae was stable. Our work underscores the importance of including environmental stressors towards understanding host-parasite dynamics to improve disease transmission models and control.
Plan de classement
Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
BURKINA FASO
Localisation
Fonds IRD [F B010068363]
Identifiant IRD
fdi:010068363
Contact