251 research outputs found
Electroantennographic responses of Aromia bungii (Faldermann, 1835) (Coleoptera, Cerambycidae) to a range of volatile compounds
The red-necked longhorn beetle, Aromia bungii, is one of the most damaging pests of stone fruit trees. Native to the south-eastern Palearctic and Oriental regions, it invaded and is established to some extent in the Campania Region (Southern Italy). In several cerambycid species, volatile organic compounds (VOCs) have been shown to play a role in mate and host plant location. Increasing EAG amplitudes from the basal to the distal antennal segments were recorded in response to six selected plant volatiles. From the distal flagellomeres, the largest EAG responses (>0.8 mV) were elicited by 2-hexanol, octanal, sulcatone, guaiacol, sulcatol, 2,4-dimethyl-3-hexanol, 2,4-dimethyl-2-hexanone, heptanal, nonanal, (Z)-3-hexenol, and 1-heptanol in both sexes, and by linalool, (E)-2-heptenal, 1-octen-3-ol, (E)-2-octenal, 3-octanol, (E)-2-octen-1-ol, alfa-phellandrene, and alfa-terpinene in males. The olfactory system of both sexes proved to be sensitive to changes in stimulus concentration and compound structure. This study demonstrates the capability of A. bungii males and females to detect and discriminate among a wide range of VOCs and provides a basis for further olfactometer and field trapping experiments aimed at identifying behaviorally-active compounds useful for the implementation of semiochemical-based control strategies for this pest
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Attività insetticida di estratti di Scrophularia canina L. verso adulti di Sitophilus granarius (L.) (Coleoptera, Curculionidae).
Electroantennogram responses of Malacosoma neustrium (L.) (Lepidoptera: Lasiocampidae) and its parasitoids Brachymeria intermedia (Nees) (Hymenoptera: Chalcididae) and Pimpla instigator F. (Hymenoptera: Ichneumonidae) to some volatile organic compounds (VOCs).
Efficacia di alcoli e aldeidi alifatici per la riduzione dell’attrattività dei cereali verso Sitophilus granarius (L.) (Coleoptera, Curculionidae).
Attrattività di composti volatili di origine vegetale verso gli adulti di Sesamia nonagriodes (Lepidoptera, Noctuidae)
Possibilità di integrazione periferica del segnale olfattivo in presenza di neuroni generalisti sensibili a composti feromonici e di origine vegetale
RISULTATI PRELIMINARI DELLO STUDIO SULLA MACROLEPIDOTTEROFAUNA DELLA RISERVA MAN AND BIOSPHERE DI MONTEDIMEZZO VASTOGIRARDI
Chemical, electrophysiological, and behavioral investigations on the sex pheromone of lackey moth, Malacosoma neustrium
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