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