Mosquito species associated with horses in Madagascar: A review of their vector status with regard to the epidemiology of West Nile fever

Tantely Luciano Michaël, Guis Hélène, Randriananjantenaina Iavonirina, Raharinirina Manou Rominah, Velonirina Haja Johnson, Cardinale Eric, Raveloarijaona N., Cetre-Sossah Catherine, Garros Claire, Girod R.. 2022. Mosquito species associated with horses in Madagascar: A review of their vector status with regard to the epidemiology of West Nile fever. Medical and Veterinary Entomology, 36 (1) : 1-13.

Liste HCERES des revues (en SHS) : oui

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

Résumé : In Madagascar, the high West Nile virus (WNV) antibody prevalence reported in horse populations suggests a high level of vector-horse contact. This study aims to characterize the mosquito species usually involved in WNV transmission in horse stables in Madagascar. Five horse stables were investigated in October and November 2016 in five distinct inland areas. Mosquitoes were collected using double net traps baited with human, poultry or horse as well as light traps. Blood meal identification from engorged females was performed using host-specific PCRs. A total of 2898 adult mosquitoes were collected with Culex (Culex) antennatus (Becker) (40.7%), and Cx. (Cux.) quinquefasciatus Say (14.9%), being the most abundant species. The mosquito abundance varied between horse stables (P < 10−7) and depending on the bait used in the double net traps (P < 0.003). Among the 190 tested blood meals, 119 consisted of single blood meals with 85 from horse, 17 from human, 16 from chicken, one from cattle and 71 consisted of mixed blood meals. The mosquito species collected during this study exhibited a generalist feeding behaviour allowing them to act as bridge vectors between different vertebrate hosts involved in WNV transmission cycle. Their vector status with regard to West Nile fever epidemiology is reviewed.

Mots-clés Agrovoc : vecteur de maladie, épidémiologie, cheval, Culicidae, transmission des maladies, identification, flavivirus, Enquête pathologique, surveillance épidémiologique, Culex, dynamique des populations, comportement alimentaire, genre humain, fièvre du West Nile

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés libres : Culicidae, Horse, West Nile, Virus, Madagascar

Auteurs et affiliations

• Tantely Luciano Michaël, Institut Pasteur de Madagascar (MDG) - auteur correspondant
• Guis Hélène, CIRAD-BIOS-UMR ASTRE (KHM)
• Randriananjantenaina Iavonirina, Institut Pasteur de Madagascar (MDG)
• Raharinirina Manou Rominah, Institut Pasteur de Madagascar (MDG)
• Velonirina Haja Johnson, Institut Pasteur de Madagascar (MDG)
• Cardinale Eric, CIRAD-BIOS-UMR ASTRE (FRA) ORCID: 0000-0002-3434-3541
• Raveloarijaona N., Ministry of Agriculture, Livestock and Fisheries (Madagascar) (MDG)
• Cetre-Sossah Catherine, CIRAD-BIOS-UMR ASTRE (FRA)
• Garros Claire, CIRAD-BIOS-UMR ASTRE (FRA) ORCID: 0000-0003-4378-5031
• Girod R., Institut Pasteur de Madagascar (MDG)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/604799/)

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