@article{fdi:010061427, title = {{R}epellent, irritant and toxic effects of 20 plant extracts on adults of the malaria vector {A}nopheles gambiae mosquito}, author = {{D}eletre, {E}. and {M}artin, {T}. and {C}ampagne, {P}. and {B}ourguet, {D}. and {C}adin, {A}. and {M}enut, {C}. and {B}onafos, {R}. and {C}handre, {F}abrice}, editor = {}, language = {{ENG}}, abstract = {{P}yrethroid insecticides induce an excito-repellent effect that reduces contact between humans and mosquitoes. {I}nsecticide use is expected to lower the risk of pathogen transmission, particularly when impregnated on long-lasting treated bednets. {W}hen applied at low doses, pyrethroids have a toxic effect, however the development of pyrethroid resistance in several mosquito species may jeopardize these beneficial effects. {T}he need to find additional compounds, either to kill disease-carrying mosquitoes or to prevent mosquito contact with humans, therefore arises. {I}n laboratory conditions, the effects (i. e., repellent, irritant and toxic) of 20 plant extracts, mainly essential oils, were assessed on adults of {A}nopheles gambiae, a primary vector of malaria. {T}heir effects were compared to those of {DEET} and permethrin, used as positive controls. {M}ost plant extracts had irritant, repellent and/or toxic effects on {A}n. gambiae adults. {T}he most promising extracts, i. e. those combining the three types of effects, were from {C}ymbopogon winterianus, {C}innamomum zeylanicum and {T}hymus vulgaris. {T}he irritant, repellent and toxic effects occurred apparently independently of each other, and the behavioural response of adult {A}n. gambiae was significantly influenced by the concentration of the plant extracts. {M}echanisms underlying repellency might, therefore, differ from those underlying irritancy and}, keywords = {}, booktitle = {}, journal = {{P}los {O}ne}, volume = {8}, numero = {12}, pages = {e82103}, ISSN = {1932-6203}, year = {2013}, DOI = {10.1371/journal.pone.0082103}, URL = {https://www.documentation.ird.fr/hor/fdi:010061427}, }