Répartition de la fièvre catarrhale ovine et des Culicoides spp. de 2005 à 2008 au Portugal

Auteurs

    T. Nunes, I. Fonseca, A. Baptista, H. Martins, C. Agrela Pinheiro, J. Lucientes, F. Boinas

DOI :

https://doi.org/10.19182/remvt.10043

Mots-clés


Culicoides, Fièvre catarrhale ovine, Bluetongue, Portugal

Résumé

The first outbreak of bluetongue (BT) in Portugal occurred in 1956 and was caused by BT virus serotype 10 (BTV-10). The dis­ease was declared eradicated in 1960. Forty-four years later, in November 2004, BT re-occurred in Portugal, caused by BTV-4, and again, in September 2007, by BTV-1. It has persisted in some regions of the country since then. To help control the disease, a BT entomological programme was implemented in Portugal in 2005 and some of the results are now reported, focusing on Culicoides species as BTV potential vectors. In the framework of the national entomological programme, the country was divided into 45 geographical units (GUs) (50 km side squares). Mini-CDC light traps were used to collect insects in selected ruminant herds in different GUs. During the period of September 2005 to May 2008, 2990 valid catches were made and ten Culicoides species were identified. C. imicola was the main species identified and accounted for 81.73% of the specimens collected, with a peak occurrence in September. C. Obsoletus complex accounted for 4.45% of the specimens, with peaks occurring from May to July. C. pulicaris accounted for 0.04% only of the collections. C. imicola was caught 18.3 times more and mean specimens were collected 8.9 times more per trap than C. obsoletus. Although C. imicola was collected in more northern latitudes than previously reported in Portugal, these catches were sporadic and with a low number of specimens. C. imicola predominantly occurred in the East-Central and South regions of Portugal and prevailed in the areas where BT outbreaks occurred. Its marked seasonal occur­rence coincided with the period of BT outbreaks in Portugal. C. imicola is thus considered the main vector of BTV in Portugal, and official sanitary prophylactic and control measures should be implemented accordingly to decrease the risk of transmission.

Téléchargements

Les données relatives au téléchargement ne sont pas encore disponibles.

Affiliations

  • T. Nunes Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Polo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
  • I. Fonseca Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Polo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
  • A. Baptista Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Polo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
  • H. Martins Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Polo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
  • C. Agrela Pinheiro Direcção Geral de Veterinária, Portugal.
  • J. Lucientes Parasitología y Enfermedades Parasitarias, Departamento de Patología Animal (Sanidad Animal), Spain.
  • F. Boinas Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Polo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.

Téléchargements

Métriques
Vues/Téléchargements
  • Résumé
    309
  • PDF
    150

Reçu

18-12-2014

Publié

01-02-2009

Comment citer

Nunes, T., Fonseca, I., Baptista, A., Martins, H., Agrela Pinheiro, C., Lucientes, J. et Boinas, F. (2009) « Répartition de la fièvre catarrhale ovine et des Culicoides spp. de 2005 à 2008 au Portugal », Revue d’élevage et de médecine vétérinaire des pays tropicaux. Montpellier, France, 62(2-4), p. 133–133. doi: 10.19182/remvt.10043.

Numéro

Rubrique

Santé animale et épidémiologie

Catégories