Negative density-dependent dispersal in tsetse flies: A risk for control campaigns?

De Meeus Thierry, Ravel Sophie, Solano Philippe, Bouyer Jérémy. 2019. Negative density-dependent dispersal in tsetse flies: A risk for control campaigns?. Trends in Parasitology, 35 (8) : 615-621.

https://doi.org/10.1016/j.pt.2019.05.007

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Quartile : Outlier, Sujet : PARASITOLOGY

Résumé : Tsetse flies are vectors of parasites that cause diseases responsible for significant economic losses and health issues in sub-Saharan Africa, including sleeping sickness in humans and nagana in domestic animals. Efficient vector-control campaigns require good knowledge of the demographic parameters of the targeted populations. In the last decade, population genetics emerged as a convenient way to measure population densities and dispersal in tsetse flies. Here, by revealing a strong negative density-dependent dispersal in two dimensions, we suggest that control campaigns might unleash dispersal from untreated areas. If confirmed by direct measurement of dispersal before and after control campaigns, area-wide and/or sequential treatments of neighboring sites will be necessary to prevent this issue.

Mots-clés Agrovoc : Glossina, surveillance épidémiologique, distribution géographique

Mots-clés géographiques Agrovoc : Afrique au sud du Sahara

Mots-clés libres : Glossina, Sleeping sickness, Nagana, Control campaigns, Effective population size, Migration rate

Classification Agris : L73 - Maladies des animaux
L20 - Écologie animale

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

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