Mechanical transmission of Trypanosoma vivax and Trypanosoma congolense by common african tabanids Atylotus agrestis and Atylotus fuscipes

Desquesnes Marc, Dia Mamadou Lamine, Bouyer Jérémy, Fatehi M.. 2004. Mechanical transmission of Trypanosoma vivax and Trypanosoma congolense by common african tabanids Atylotus agrestis and Atylotus fuscipes. In : Multidiscipinarity for parasites, vectors and parasitic diseases.Volume 2 Articles fo free oral papers and posters. Proceedings of the IX European Multicolloquium of Parasitology, Valencia, July 18-23, 2004. Ed. Santiago Mas-Coma. Bologna : Medimond, 143-147. European Multicolloquium of Parasitology. 9, Valencia, Espagne, 18 Juillet 2004/23 Juillet 2004.

Résumé : To demonstrate mechanical transmission of African trypanosomes by tabanids, a series of 3 experiments was carried out in Lahirasso, Burkina Faso. Ten heifers free of trypanosome infection, were kept together in a corral covered by a mosquito net. In the two first experiments, 2 heifers were experimentally infected with a local stock of T. vivax. Tabanids freshly-captured with 2 Nzi traps were released into the fly proof corral, during 20 days: on average 32 Atylotus agrestis / heifer / day in the first experiment, and 54 Atylotus fuscipes in the second one. Mechanical transmission of T. vivax was demonstrated in both cases with high incidence rates: respectively 63% and 75%. In a third experiment 2 heifers were experimentally infected with a local stock of T. congolense. On average 29 freshly-captured Atylotus agrestis per heifer / day were released in the same conditions. The incidence rate of T. congolense infection was 25%. Impact of tabanids as mechanical vectors of trypanosomes should be re-considered in light of these results.

Mots-clés Agrovoc : changement climatique, impact sur l'environnement, Trypanosoma vivax, Trypanosoma congolense

Mots-clés géographiques Agrovoc : Burkina Faso

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

Auteurs et affiliations

• Desquesnes Marc, CIRAD-EMVT-SANTE ANIMALE (BFA) ORCID: 0000-0002-7665-2422
• Dia Mamadou Lamine, CIRDES (BFA)
• Bouyer Jérémy, CIRAD-EMVT-SANTE ANIMALE (FRA) ORCID: 0000-0002-1913-416X
• Fatehi M., CIRDES (BFA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/534491/)

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