Olfactory neuroethology of the Oriental fruit moth, Grapholita molesta (Busck)
Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal
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The oriental fruit moth, Grapholita molesta, is one of the main pests of peach trees worldwide. It is conThe oriental fruit moth, Grapholita molesta, is one of the main pests of peach trees worldwide. Plant volatiles are a promising technique to attract G. molesta under mating disruption conditions. In my thesis I have characterized the response of olfactory receptor neurons (ORN) to pheromone and plant odors by means of single-sensillum electrophisiology. I then used this information to determine that a previously reported pheromone-plant synergism does not result from pheromone-plant interactions at the ORN level. I have compared several plant volatile blends previously tested in Australia and China, and have found that none of them attracted moths in the field, but they synergized pheromone responses in the laboratory. Finally, I investigated the role of plant blends and alcohols on the response to unnatural pheromone blend ratios or overdosed pheromone concentrations. With these studies we hopefully advanced on basic and applied aspects of the olfactory neuroethology of this species.
European research projects
- Tesis Doctorals 
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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 ...
Synergism of pheromone and host-plant volatile blends in the attraction of Grapholita molesta males Varela, Nelia; Avilla Hernández, Jesús; Anton, Sylvia; Gemeno Marín, César (The Netherlands Entomological Society, 2011-11)Control of Grapholita molesta (Busck) (Lepidoptera: Tortricidae), a major pest of stone and pome fruits, is successfully achieved by mating disruption. Under these conditions, tools other than conventional pheromone ...
Captures of oriental fruit moth, Grapholita molesta (Lepidoptera: Tortricidae), in traps baited with host-plant volatiles in Chile [Research data] Barros-Parada, Wilson; Ammagarahalli Munishamappa, Byrappa; Basoalto, Esteban; Fuentes-Contreras, Eduardo; Gemeno Marín, César (Universitat de Lleida, 2017)Studies in Australia and China identified host-plant volatile blends from peach and pear that captured relatively high numbers of Grapholita molesta (Busck). To determine if these blends are attractive in other countries ...