Population differences in male tarnished plant bug response to female pheromones

Quoi:
Poster session
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Quand:
vendredi 20 déc.   11:30 AM à 12:30 PM (1 heure)
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Salle ABCD
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Conditions influence the predisposition to respond. As a result, population differences may emerge. The tarnished plant bug (TPB) is a prevalent polyphagous pest insect in Eastern North America. Males are attracted to a pheromone composed of more than 5 compounds emitted by females. We investigated population differences in male responsiveness to female pheromones in two TPB populations from Ontario and Quebec using a Y-olfactometer. Males from both populations spent an equal amount of time in the branches of the olfactometer. Males from Ontario spent 99% of their time in the branch with females, regardless of the population, over an empty branch. However, they preferred females from their own population when given the choice between females from the two populations. Males from Quebec spent 1% of their time in the branch with females, regardless of the population, over an empty branch. They preferred females from the Ontario population when given the choice between females from the two populations. Our results validate the olfactometer design for the TPB and suggest important population differences in the response to pheromones.

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