Variation in the susceptibility of urban Aedes mosquitoes infected with a densovirus

Perrin Aurélie, Gosselin-Grenet Anne-Sophie, Rossignol Marie, Ginibre Carole, Scheid Bethsabée, Lagneau Christophe, Chandre Fabrice, Baldet Thierry, Ogliastro Mylène, Bouyer Jérémy. 2020. Variation in the susceptibility of urban Aedes mosquitoes infected with a densovirus. Scientific Reports, 10:18654, 10 p.

https://doi.org/10.1038/s41598-020-75765-4

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

Prévisualisation

Version publiée - Anglais
Sous licence

.
Publi densovirus vs aedes species & strains Perrin_Scientific_Reports_2020.pdf
Télécharger (1MB) | Prévisualisation

Url - éditeur : https://rdcu.be/b9EYw

Quartile : Q1, Sujet : MULTIDISCIPLINARY SCIENCES

Résumé : Urban Aedes mosquitoes are vectors of many viruses affecting human health such as dengue, chikungunya and Zika viruses. Insecticide resistance and environmental toxicity risks hamper the effectiveness of chemical control against these mosquito vectors. Alternative control methods, such as the use of mosquito-specific entomopathogenic viruses should be explored. Numerous studies have focused on evaluating the potential of different densoviruses species as biological control agents. However, knowledge on the extent of inter- and intra-specific variations in the susceptibility of Aedes mosquitoes to infection by different densoviruses remains insufficient. In this study, we compared infection and mortality rates induced by the Aedes albopictus densovirus 2 in different strains of Aedes albopictus and Aedes aegypti mosquitoes. The two Aedes species were different in terms of susceptibility to viral infection. Under laboratory conditions, Aedes albopictus densovirus 2 appeared more virulent for the different strains of Aedes aegypti tested than for those of Aedes albopictus. In addition, we also found significant intra-specific variation in infection and mortality rates. Thus, although even if Aedes albopictus densoviruses could be powerful biocontrol agents used in the management of urban Aedes populations, our results also call into question the use of single viral isolate as biocontrol agents.

Mots-clés Agrovoc : Aedes, Aedes albopictus, Aedes aegypti, densovirus, virologie, relation hôte pathogène, agent de lutte biologique, résistance aux maladies, zone urbaine

Mots-clés libres : Invasive species, Virology, Virus–host interactions

Classification Agris : L73 - Maladies des animaux
L70 - Sciences et hygiène vétérinaires - Considérations générales

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Commission

Programme de financement européen : H2020

Projets sur financement : (EU) Revolutionizing Insect Control

Auteurs et affiliations