Negative Density-dependent Dispersal in Tsetse Flies: A Risk for Control Campaigns?
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.
['De Meeûs|Thierry|T|', 'Ravel|Sophie|S|', 'Solano|Philippe|P|', 'Bouyer|Jérémy|J|']
D063147:Animal Distribution D000818:Animals D006801:Humans D007300:Insect Control D007303:Insect Vectors D018570:Risk Assessment D014353:Trypanosomiasis, African D014370:Tsetse Flies
control campaigns sleeping sickness nagana Glossina effective population size migration rate