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Response of native and exotic longhorn beetles to common pheromone components provides partial support for the pheromone-free space hypothesis

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Insect Science 2021年第3期28卷 793-810页

作者： Davide Rassati Matteo Marchioro leah flaherty Riccardo Poloni Sara Edwards Massimo Faccoli Jon Sweeney Department of Agronomy FoodNatural ResourcesAnimals and Environment(DAFNAE)University of PaduaPadovaItaly Department of Biological Sciences MacEwan UniversityEdmontonAlbertaCanada Department of Biology University of PaduaPadovaItaly Forest Protection Limited Fredericton International AirportLincolnNew BrunswickCanada Natural Resources Canada Canadian Forest Service-Atlantic Forestry CentreFrederictonNew BrunswickCanada

Longhorn beetles are among the most important groups of invasive forest in-sects *** parallel,they represent one of the most well-studied insect groups interms of chemical *** beetle aggregation-sex pheromones are commonlyused as trap lures for specific and generic surveillance programs at points of entry andmay play a key role in determining the success or failure of exotic species *** exotic species might be more likely to establish in a novel habitat if it relies on apheromone channel that is different to that of native species active at the same time of yearand day,allowing for unhindered mate location(i.e.,pheromone-free space hypothesis).Inthis study,we first tested the attractiveness of single pheromone components(i.e.,racemic3-hydroxyhexan-2-one,racemic 3-hydroxyoctan-2-one,and syn-2,3-hexanediol),and theirbinary and tertiary combinations,to native and exotic longhorn beetle species in Canadaand ***,we exploited trap catches to determine their seasonal flight ***,we used pheromone-baited"timer traps"to determine longhorn beetle daily *** response to single pheromones and their combinations was mostly speciesspecific but the combination of more than one pheromone component allowed catch ofmultiple species simultancously in *** response of the exotic species to pheromonecomponents,coupled with results on seasonal and daily flight activity,provided partialsupport for the pheromone-free space *** study aids in the understanding oflonghorn beetle chemical ecology and confirms that pheromones can play a key role inlonghorn beetle invasions.

关键词： Cerambycidae Cerambycinae invasion process surveillance trapping

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