République Tunisienne  
Ministère de l'Agriculture, des Ressources Hydrauliques et de la Pêche

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New species of the genus Culicoides (Diptera Ceratopogonidae) for Tunisia,
with detection of Bluetongue viruses in vectors Description

 
Date de publication 2017
Télécharger

1-Bluetongue virus serotype 3 in Western Sicily, November 2017

2-New species of the genus Culicoides
(Diptera Ceratopogonidae) for Tunisia,
with detection of Bluetongue viruses in vectors

Auteur 

S.oufien Sghaier, S. Hammami, M. Goffredo, M. Hammami, O. Portanti, A. Lorusso, G. Savini et Jean C. Delécolle

Mots clés Bluetongue virus, Culicoides, Entomology, Epizootic haemorrhagic disease virus, Surveillance, Tunisia, Vectors.
Résumé  

Bluetongue virus (BTV) and Epizootic haemorrhagic disease virus (EHDV) are double-stranded RNA orbiviruses of the Reoviridae family. Bluetongue virus and EHDV infect domestic and wild ruminants and they are transmitted by biting midges of the genus Culicoides (Diptera: Ceratopogonidae). Since 1999, BTV outbreaks have occurred in Tunisia and 4 serotypes, BTV2, BTV1, BTV4 and BTV3, were involved in 2000, 2006, 2009, and 2016, respectively. Epizootic haemorrhagic disease was detected for the first time in Tunisia and in other Northern African countries in 2006. These incursions have caused considerable economic losses. Our study had the goal to describe diversity, distribution, and seasonal dynamics of Culicoides. Fourteen sampling sites were chosen throughout the country and 2-night trapping of midges was performed monthly from June 2006 to July 2008. A total of 11,582 Culicoides specimens were collected from 336 light traps, comprising 25 species, of which 7 were identified for the first time in Tunisia, increasing to 35 the total number of Culicoides species now reported in this country. Twenty-three pools of parous females belonging to the Culicoides imicola and Culicoides kingi were tested for detection of BTV and EHDV by molecular assays. Both BTV1 and BTV4 were detected in C. imicola.
Métadonnées Fièvre catarrhale ovine, FCO, bluetongue, culicidés, entomologie, virus, surveillance, Tunisie

 

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