BACKGROUND: Populations of red palm weevil (RPW), a severe pest of palms in Mediterranean countries, might be limited by semiochemical-based behaviour-disrupting methods. We evaluated the effects of electroantennogram (EAG)-active plant volatiles on the behaviour of RPWs from Italy and Israel. In field experiments, α-pinene, citronellol, geraniol, citral and 1-octen-3-ol were tested for their ability to disrupt attraction to pheromone-kairomone and molasses baited traps. Those that were found to be disruptive in the field were evaluated in a laboratory choice bioassay in individual cages for their effect on RPW female feeding and oviposition. RESULTS: Field experiments showed reduced captures in traps loaded with geraniol (-57%), 1-octen-3-ol (-50%) or α-pinene (-45% to -60%); captures in citronellol- or citral-loaded traps did not differ from control. In laboratory experiments, 1-octen-3-ol was the most potent behaviour-modifying compound, eliciting a significant/marginally significant reduction in both feeding and oviposition at the lowest dose tested in both populations. Geraniol generally caused a strong reduction in feeding and oviposition at each dose tested (Israel), or at the highest dose (Italy). α-Pinene caused some reduction in feeding activity at the highest dose tested (Italy), but no consistent repellency (Israel). CONCLUSION: Field and laboratory data suggest the potential for the use of 1-octen-3-ol, geraniol and α-pinene for RPW population management.

Guarino, S., Colazza, S., Peri, E., Bue, P., Germanà, M., Kuznetsova, T., et al. (2015). Behaviour-modifying compounds for management of the red palm weevil (Rhynchophorus ferrugineus Oliver). PEST MANAGEMENT SCIENCE, 71(12), 1605-1610 [10.1002/ps.3966].

Behaviour-modifying compounds for management of the red palm weevil (Rhynchophorus ferrugineus Oliver)

GUARINO, Salvatore;COLAZZA, Stefano;PERI, Ezio;GERMANA', Maria Pia;
2015

Abstract

BACKGROUND: Populations of red palm weevil (RPW), a severe pest of palms in Mediterranean countries, might be limited by semiochemical-based behaviour-disrupting methods. We evaluated the effects of electroantennogram (EAG)-active plant volatiles on the behaviour of RPWs from Italy and Israel. In field experiments, α-pinene, citronellol, geraniol, citral and 1-octen-3-ol were tested for their ability to disrupt attraction to pheromone-kairomone and molasses baited traps. Those that were found to be disruptive in the field were evaluated in a laboratory choice bioassay in individual cages for their effect on RPW female feeding and oviposition. RESULTS: Field experiments showed reduced captures in traps loaded with geraniol (-57%), 1-octen-3-ol (-50%) or α-pinene (-45% to -60%); captures in citronellol- or citral-loaded traps did not differ from control. In laboratory experiments, 1-octen-3-ol was the most potent behaviour-modifying compound, eliciting a significant/marginally significant reduction in both feeding and oviposition at the lowest dose tested in both populations. Geraniol generally caused a strong reduction in feeding and oviposition at each dose tested (Israel), or at the highest dose (Italy). α-Pinene caused some reduction in feeding activity at the highest dose tested (Italy), but no consistent repellency (Israel). CONCLUSION: Field and laboratory data suggest the potential for the use of 1-octen-3-ol, geraniol and α-pinene for RPW population management.
Settore AGR/11 - Entomologia Generale E Applicata
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1526-4998
Guarino, S., Colazza, S., Peri, E., Bue, P., Germanà, M., Kuznetsova, T., et al. (2015). Behaviour-modifying compounds for management of the red palm weevil (Rhynchophorus ferrugineus Oliver). PEST MANAGEMENT SCIENCE, 71(12), 1605-1610 [10.1002/ps.3966].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/217608
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