How do species, population and active ingredient influence insecticide susceptibility in Culicoides biting midges (Diptera: Ceratopogonidae) of veterinary importance?
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Author
Venail, Roger
Lhoir, Jonathan
Fall, Moussa
del Río, Ricardo
Labuschagne, Karien
Miranda, Miguel
Venter, Gert
Rakotoarivony, Ignace
Allène, Xavier
Scheid, Bethsabée
Gardès, Laëtitia
Gimonneau, Geoffrey
Lancelot, Renaud
Garros, Claire
Cêtre-Sossah, Catherine
Balenghien, Thomas
Carpenter, Simon
Baldet, Thierry
Publication date
2015-08-28ISSN
1756-3305
Abstract
Background: Culicoides biting midges are biological vectors of internationally important arboviruses of livestock and equines. Insecticides are often employed against Culicoides as a part of vector control measures, but systematic assessments of their efficacy have rarely been attempted. The objective of the present study is to determine baseline susceptibility of multiple Culicoides vector species and populations in Europe and Africa to the most commonly used insecticide active ingredients. Six active ingredients are tested: three that are based on synthetic pyrethroids (alpha-cypermethrin, deltamethrin and permethrin) and three on organophosphates (phoxim, diazinon and chlorpyrifos-methyl). Methods: Susceptibility tests were conducted on 29,064 field-collected individuals of Culicoides obsoletus Meigen, Culicoides imicola Kieffer and a laboratory-reared Culicoides nubeculosus Meigen strain using a modified World Health Organization assay. Populations of Culicoides were tested from seven locations in four different countries
(France, Spain, Senegal and South Africa) and at least four concentrations of laboratory grade active ingredients were assessed for each population. Results: The study revealed that insecticide susceptibility varied at both a species and population level, but that broad conclusions could be drawn regarding the efficacy of active ingredients. Synthetic pyrethroid insecticides were found to inflict greater mortality than organophosphate active ingredients and the colony strain of C. nubeculosus was significantly more susceptible than field populations. Among the synthetic pyrethroids, deltamethrin was found to be the most toxic active ingredient for all species and populations. Conclusions: The data presented represent the first parallel and systematic assessment of Culicoides insecticide susceptibility across several countries. As such, they are an important baseline reference to monitor the susceptibility status of Culicoides to current insecticides and also to assess the toxicity of new active ingredients with practical
implications for vector control strategies.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
619 - Veterinary science
Pages
9
Publisher
BMC
Is part of
Parasites and Vectors
Citation
Venail, Roger, Jonathan Lhoir, Moussa Fall, Ricardo del Río, Sandra Talavera, Karien Labuschagne, and Miguel Miranda et al. 2015. "How Do Species, Population And Active Ingredient Influence Insecticide Susceptibility In Culicoides Biting Midges (Diptera: Ceratopogonidae) Of Veterinary Importance?". Parasites & Vectors 8 (1). doi:10.1186/s13071-015-1042-8.
Grant agreement number
EC/FP7/261504/EU/Surveillance and control of vector-borne infections/EDENEXT
Program
Sanitat Animal
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2805]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/