Contrasting population structures of two vectors of African Trypanosomoses in Burkina Faso : consequences for control

Koné Naférima, Bouyer Jérémy, Ravel Sophie, Vreysen Marc J.B., Domagni Kouadjo T., Causse Sandrine, Solano Philippe, De Meeus Thierry. 2011. Contrasting population structures of two vectors of African Trypanosomoses in Burkina Faso : consequences for control. PLoS Neglected Tropical Diseases, 5 (6):e1217, 10 p.

https://doi.org/10.1371/journal.pntd.0001217

Article de revue ; Article de revue à facteur d'impact Revue en libre accès total

Prévisualisation

Version publiée - Anglais
Utilisation soumise à autorisation de l'auteur ou du Cirad.
document_560563.pdf
Télécharger (821kB) | Prévisualisation

Quartile : Q1, Sujet : TROPICAL MEDICINE / Quartile : Q1, Sujet : PARASITOLOGY

Résumé : Background: African animal trypanosomosis is a major obstacle to the development of more efficient and sustainable livestock production systems in West Africa. Riverine tsetse species such as Glossina palpalis gambiensis Vanderplank and Glossina tachinoides Westwood are the major vectors. A wide variety of control tactics is available to manage these vectors, but their removal will in most cases only be sustainable if the control effort is targeting an entire tsetse population within a circumscribed area. Methodology/Principal Findings: In the present study, genetic variation at microsatellite DNA loci was used to examine the population structure of G. p. gambiensis and G. tachinoides inhabiting four adjacent river basins in Burkina Faso, i.e. the Mouhoun, the Comoe´ , the Niger and the Sissili River Basins. Isolation by distance was significant for both species across river basins, and dispersal of G. tachinoides was ,3 times higher than that of G. p. gambiensis. Thus, the data presented indicate that no strong barriers to gene flow exists between riverine tsetse populations in adjacent river basins, especially so for G. tachinoides. Conclusions/Significance: Therefore, potential re-invasion of flies from adjacent river basins will have to be prevented by establishing buffer zones between the Mouhoun and the other river basin(s), in the framework of the PATTEC (Pan African Tsetse and Trypanosomosis Eradication Campaign) eradication project that is presently targeting the northern part of the Mouhoun River Basin. We argue that these genetic analyses should always be part of the baseline data collection before any tsetse control project is initiated.

Mots-clés Agrovoc : Glossina palpalis, Glossina tachinoides, trypanosomose

Mots-clés géographiques Agrovoc : Burkina Faso

Mots-clés complémentaires : Glossina palpalis gambiensis

Classification Agris : L72 - Organismes nuisibles des animaux
L73 - Maladies des animaux

Champ stratégique Cirad : Axe 4 (2005-2013) - Santé animale et maladies émergentes

Auteurs et affiliations