Comparative effect of three neurotoxic insecticides with different modes of action on adult males and females of three tortricid moth pests
Bosch Serra, Dolors
Valls Marsal, Joan
MetadataShow full item record
Insecticides are the dominant pest management method in fruit and vegetable crops worldwide owing to their quick effect, low cost, and relatively easy application, but they bear negative effects on human health and the environment. Insecticide mode of action (MoA), target species, and sex are variables that could affect insecticide-induced mortality. We recorded the mortality caused by three neurotoxic insecticides with different modes of action (chlorpyrifos [organophosphate, acetylcholinesterase inhibitor], λ-cyhalothrin [pyrethroid, sodium channel modulator], and thiacloprid [neonicotinoid, nicotinic acetylcholinesterase receptor agonist]) applied topically to adult males and females of three economically important tortricid species [Cydia pomonella (L.), Grapholita molesta (Busck), and Lobesia botrana (Denis & Schiffermüller)] that strongly depend on insecticide use for their control. Concentration and dose-mortality curves were recorded at 24 and 48 h postapplication. Large mortality differences between insecticides (maximum 7,800-fold for LD50) were followed by much lower, yet important, differences between species (maximum 115-fold), and sexes (maximum 41.5-fold). Significant interactions between the three factors indicate that they are not independent from each other. Interestingly, with the organophosphate chlorpyrifos, males of the three species were less susceptible than females, which was unexpected, as females are larger than males. Higher female sensitivity to organophosphates has been reported previously but only in G. molesta, not in other moth species. Our results highlight the importance of taking into account sex in dose-mortality studies with adult moths.
Is part ofJournal of Economic Entomology, 2017, vol. 110, núm. 4, p. 1740–1749
European research projects
Showing items related by title, author, creator and subject.
Comparative effect of three neurotoxic insecticides with different modes of action on adult males and females of three tortricid moth pests [Research data] Navarro Roldán, Miguel Ángel; Avilla Hernández, Jesús; Bosch Serra, Dolors; Valls Marsal, Joan; Gemeno Marín, César (Universitat de Lleida, 2016)We recorded the mortality caused by three neurotoxic insecticides with different modes of action [Chlorpyrifos (organophosphate, acetylcholinesterase inhibitor), λ-Cyhalothrin (pyrethroid, sodium channel modulator) and ...
Enzymatic detoxification strategies for neurotoxic insecticides in adult tortricids [Research data] Navarro Roldán, Miguel Ángel; Bosch Serra, Dolors; Gemeno Marín, César; Siegwart, Myriam (Universitat de Lleida, 2017)We assess the main detoxification metabolic mechanisms to three neurotoxic insecticides in male and female adults of three economically important tortricid moth pests [Cydia pomonella (L.), Grapholita molesta (Busck), and ...
Ordinary glomeruli in the antennal lobe of male and female tortricid moth Grapholita molesta (Busck) (Lepidoptera: Tortricidae) process sex pheromone and host-plant volatiles Varela, Nelia; Avilla Hernández, Jesús; Gemeno Marín, César; Anton, Sylvia (Company of Biologists Ltd., 2011-02)Both sexes of Grapholita molesta, a key pest of stone fruits, are able to detect host-plant volatiles and the sex pheromone emitted by females, and to modify their behaviour accordingly. How olfactory information is processed ...