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Olfactory neuroethology of the Oriental fruit moth, Grapholita molesta (Busck)

Authors: Ammagarahalli Munishamappa, Byrappa;

Olfactory neuroethology of the Oriental fruit moth, Grapholita molesta (Busck)

Abstract

Grapholita molesta és una de les principals plagues del presseguer. Els volàtils de planta són una tècnica prometedora per atreure G. molesta en condicions de confusió sexual. En la meva tesi he caracteritzat la resposta de les neurones receptores olfactòries (ORN) a la feromona i volàtils de planta mitjançant registres de sensila única. Després vaig determinar que el sinergismo entre volàtils de planta i feromona prèviament publicat no ocorre a nivell de la ORN. Més endavant he comparat volàtils de planta que en estudis anteriors a Xina i a Austràlia havien dau bons resultats però en el meu cas no va haver-hi respostes en camp, encara que en el túnel de vol sí que van augmentar la resposta a la feromona. Finalment he explorat el paper de volàtils de planta i alcohols en la resposta a mescles subóptimas de feromona. Amb aquests resultats espero haver contribuït al coneixement de la neuretología olfactòria d'aquesta plaga.trolled with sex pheromones (mating disrupton) and insecticide applications. Under mating disruption conditions it is difficult to monitor the pest and to evaluate the control methods. Plant volatiles are a promising technique to attract G. molesta under mating disruption conditions. In addition plant volatiles could attract females, while the sex pheromone only attracts males.

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.

Grapholita molesta es una de las principales plagas del melocotonero. Los volátiles de planta son una técnica prometedora para atraer G. molesta en condiciones de confusión sexual. En mi tesis he caracterizado la respuesta de las neuronas receptoras olfativas (ORN) a la feromona y volátiles de planta mediante registros de sensila única. Después determiné que el sinergismo entre volátiles de planta y feromona previamente publicado no ocurre a nivel de la ORN. Más adelante he comparado volátiles de planta que en estudios anteriores en China y en Australia habían dado buenos resultados pero en mi caso no hubo respuestas en campo, aunque en el túnel de vuelo sí que aumentaron la respuesta a la feromona. Finalmente he explorado el papel de volátiles de planta y alcoholes en la respuesta a mezclas subóptimas de feromona. Con estos resultados espero haber contribuido al conocimiento de la neuretología olfativa de esta plaga.

Country
Spain
Keywords

Insectes, Insects, Behavior, Plant volatile, Producció vegetal, Pheromone, Olfacció, Feromona, Insectos, Olfaction, Volátil de planta, 57

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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