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Mapping landscape friction to locate isolated tsetse populations candidate for elimination

Bouyer Jérémy, Dicko Ahmadou Hamady, Cecchi Giuliano, Ravel Sophie, Guerrini Laure, Solano Philippe, Vreysen Marc J.B., De Meeus Thierry, Lancelot Renaud. 2015. Mapping landscape friction to locate isolated tsetse populations candidate for elimination. Proceedings of the National Academy of Sciences of the United States of America, 112 (47) : pp. 14575-14580.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Economie-gestion; Psychologie-éthologie-ergonomie

Additional Information : Des fichiers de données complémentaires sont accessibles dans l'article : http://www.pnas.org/content/suppl/2015/11/04/1516778112.DCSupplemental

Abstract : Tsetse flies are the cyclical vectors of deadly human and animal trypanosomes in sub-Saharan Africa. Tsetse control is a key component for the integrated management of both plagues, but local eradication successes have been limited to less than 2% of the infested area. This is attributed to either resurgence of residual populations that were omitted from the eradication campaign or reinvasion from neighboring infested areas. Here we focused on Glossina palpalis gambiensis, a riverine tsetse species representing the main vector of trypanosomoses in West Africa. We mapped landscape resistance to tsetse genetic flow, hereafter referred to as friction, to identify natural barriers that isolate tsetse populations. For this purpose, we fitted a statistical model of the genetic distance between 37 tsetse populations sampled in the region, using a set of remotely sensed environmental data as predictors. The least-cost path between these populations was then estimated using the predicted friction map. The method enabled us to avoid the subjectivity inherent in the expert-based weighting of environmental parameters. Finally, we identified potentially isolated clusters of G. p. gambiensis habitat based on a species distribution model and ranked them according to their predicted genetic distance to the main tsetse population. The methodology presented here will inform the choice on the most appropriate intervention strategies to be implemented against tsetse flies in different parts of Africa. It can also be used to control other pests and to support conservation of endangered species. (Résumé d'auteur)

Mots-clés Agrovoc : Glossina palpalis, Dynamique des populations, Génétique des populations, Distribution géographique, Paysage, Modèle mathématique, Télédétection, Éradication des maladies, Trypanosomose africaine, Surveillance épidémiologique, Gestion du risque, Lutte intégrée antimaladie

Mots-clés géographiques Agrovoc : Afrique occidentale, Burkina Faso, Sénégal, Ghana

Mots-clés complémentaires : Glossina palpalis gambiensis

Mots-clés libres : Area-wide integrated pest management, Eradication, Vector control, Remote sensing, Resistance surface

Classification Agris : L72 - Pests of animals
U30 - Research methods
L73 - Animal diseases
U10 - Computer science, mathematics and statistics

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Bouyer Jérémy, CIRAD-BIOS-UMR CMAEE (SEN) ORCID: 0000-0002-1913-416X
  • Dicko Ahmadou Hamady, CIRAD-BIOS-UMR CMAEE (FRA)
  • Cecchi Giuliano, FAO (ITA)
  • Ravel Sophie, IRD (FRA)
  • Guerrini Laure, CIRAD-ES-UPR AGIRs (ZWE)
  • Solano Philippe, IRD (FRA)
  • Vreysen Marc J.B., AIEA (AUT)
  • De Meeus Thierry, CNRS (FRA)
  • Lancelot Renaud, CIRAD-BIOS-UMR CMAEE (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/578016/)

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