Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Acta Tropica art. 105030 [8 p.] Aedes aegypti Anopheles minimus beta-Caryophyllene oxide Contact irritancy Non-contact repellency 2019 fdi:010077388 ENG Acta Tropica 0001-706X ISI:000500182400006 10.1016/j.actatropica.2019.05.021 https://www.documentation.ird.fr/hor/fdi:010077388 https://www.documentation.ird.fr/intranet/publi/2019/12/010077388.pdf 197 Horizon (IRD) Contact irritant and non-contact repellent activities of beta-caryophyllene oxide were evaluated against laboratory strains of female Aedes aegypti (USDA strain), a major arbovirus vector and Anopheles minimus (KU strain), a major malaria parasite vector, compared with the synthetic repellent DEET, using an excito-repellency test system. beta-caryophyllene oxide and DEET were tested at concentrations of 0.1, 0.25, 0.5 and 1.0% (v/v). Anopheles minimus was found to be more sensitive to beta-caryophyllene oxide than that of Ae. aegypti and exhibited high avoidance response rates (86-96% escape) at 0.5% and 1.0% concentrations in contact and non-contact trials compared with Ae. aegypti (22-59% escape). However, at the same concentrations, DEET displayed lower irritancy and repellency capacities against these two mosquito species (range 0-54% escape) compared to beta-aryophyllene oxide. The analysis of escape responses showed significant differences between mosquito species at all concentrations (P < 0.05) except for 0.1%. For both species, there were significant differences in irritant and repellent responses between beta-caryophyllene oxide and DEET at higher concentrations (0.5 and 1.0%). 052 ; 020 UR237 / UR050 Thaïlande