Challenges and lessons from a vector control campaign targeting Glossina palpalis palpalis in an isolated protected forest area in Abidjan, Côte d’Ivoire

Challenges and lessons from a vector control campaign targeting Glossina palpalis palpalis in an isolated protected forest area in Abidjan, Côte d’Ivoire

Vector control (VC) is one of the strategies employed to manage African trypanosomoses. This study aimed at assessing the effectiveness of a VC campaign against Glossina palpalis palpalis using tiny targets (TTs) impregnated with insecticide in an isolated, protected forest in Abidjan, Côte d’Ivoire...

Full description

Saved in:
Bibliographic Details
Main Authors: Konan Yao Jean Rodrigue, Ta Bi Tra Dieudonné, Berté Djakaridja, Coulibaly Bamoro, Coulibaly Kinifo Donatien, Egnankon Nick Steven, Diarrassouba Foungniguée, Djabo Kouassi Albert, Watier-Grillot Stéphanie, Demoncheaux Jean-Paul, De Marie Kouadio Koffi Alain, N’Dri Louis, Solano Philippe, Ravel Sophie, Adingra Guy Pacôme, Barreaux Antoine, Ségard Adeline, Kaba Dramane, Jamonneau Vincent, De Meeûs Thierry, Djohan Vincent
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:Parasite
Subjects:
tsetse flies
vector control
tiny target
african trypanosomoses
population genetics
resistance
Online Access:https://www.parasite-journal.org/articles/parasite/full_html/2025/01/parasite240104/parasite240104.html
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Vector control (VC) is one of the strategies employed to manage African trypanosomoses. This study aimed at assessing the effectiveness of a VC campaign against Glossina palpalis palpalis using tiny targets (TTs) impregnated with insecticide in an isolated, protected forest in Abidjan, Côte d’Ivoire, while considering ecological, genetic, and operational factors. Between January 2020 and September 2022, 2,712 TTs were deployed at 684 sites, covering a total area of 1.7 km2. VC monitoring was conducted using Vavoua traps during 12 evaluation surveys, between June 2020 and March 2023. Five months after the initial TT deployment, tsetse fly density had decreased by 98.53%. Although tsetse density remained low due to TT redeployment and reinforcement, there was a significant increase a few months after the last redeployment. VC appeared to have minimal impact on the genetic structuring of G. p. palpalis. This suggested recruitment of local surviving tsetse flies all along the VC campaign due to a low probability of tsetse coming into contact with TTs, or to the evolution of behavioral or physiological resistance to control efforts. The genetic study revealed that one of the microsatellite markers used, the GPCAG locus, exhibited a selection signature possibly in response to VC. This could partly explain the challenges encountered in eliminating a seemingly isolated tsetse population thriving in a particularly favorable habitat.
ISSN:1776-1042

Similar Items