Host plant volatiles induce oriented flight behaviour in male European grapevine moths, Lobesia botrana

Plant Volatiles Enhance Behavioral Responses of Grapevine Moth Males, Lobesia botrana to Sex Pheromone

“…The compounds, (E)-β-caryophyllene, (Z)-3-hexenyl acetate, (Z)-3-hexenol, methyl salicylate, and (E)-β-farnesene, have been found previously to enhance attraction of Eupoecilia ambiguella and Cydia pomonella to their respective sex pheromones (Yang et al, 2004;Schmidt-Buesser et al, 2009). Furthermore, 1-hexanol, (E)-β-caryophyllene, (Z)-3-hexenyl acetate, or 1-octen-3-ol attract grapevine moth males on their own when used at similar release rates as in the current study (von Arx et al, 2011). The lack of response, reported by Masante-Roca et al (2007), of L. botrana males to grapevines could be due to variables associated with the plant material tested (e.g., grape variety, amount of plant material, cut vs. undamaged plants and the release rate of plant volatiles).…”

“…Although we tested plant compounds individually, one might expect multi-component blends to enhance attractiveness of under-dosed pheromone to a greater extent, based on our finding that grapevine emissions had additive effects on moth attraction when added to the optimal pheromone dose (Ta-ble 1), and from experiments in which multicomponent blends were more attractive to grapevine moths than simpler blends or single components (Tasin et al, 2007;von Arx et al, 2011). Because of the high responses of L. botrana males to the optimal pheromone dose, we explored the effects of single host-plant volatiles on pheromone attraction at an under-dosed level.…”

“…Grapevine moth larvae were reared on artificial diet under a 16 L:8D photoperiod, 65% RH and 25°C during photophase, and 85% RH and 18°C during scotophase, as described in von Arx et al (2011).…”

“…Plant compounds tested were those shown to elicit antennal receptor cell responses in L. botrana males, or that had been identified as key semiochemicals in behavioral assays with L. botrana females (Tasin et al, 2007, von Arx et al, 2011 [222][223][224][225]2012 which should be used for any reference to this work . Then, we tested responses of males to single plant chemicals at a suboptimal dose (0.1 pg.min −1 ) of pheromone.…”

Three physical barriers with obvious effects on Carposina sasakii selection behavior to two dominant jujube tree volatiles

“…Leaf acetate attracted male Grapholita molesta (Busck) in laboratory experiments (Varela et al., ) and increased the trapping efficiency of G. molesta sex pheromones in field experiments (Yu et al., ,b). Thus, leaf acetate was used as a potentiator for the sex pheromones of G. molesta (Yu et al., ,b) and also enhanced the attractive effect of Lobesia botrana (Denis & Schiffermüller) sex pheromones on males (Von Arx et al., , ). Our results indicated that unmated PFM males have higher EAG values than females to the optimum dose of leaf acetate.…”