| Title: | Response of native and exotic longhorn beetles to common pheromone components provides partial support for the pheromone-free space hypothesis |
| Author(s): | Rassati D; Marchioro M; Flaherty L; Poloni R; Edwards S; Faccoli M; Sweeney J; |
| Address: | "Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padova, Italy. Department of Biological Sciences, MacEwan University, Edmonton, Alberta, Canada. Department of Biology, University of Padua, Padova, Italy. Forest Protection Limited, Fredericton International Airport, Lincoln, New Brunswick, Canada. Natural Resources Canada, Canadian Forest Service-Atlantic Forestry Centre, Fredericton, New Brunswick, Canada" |
| ISSN/ISBN: | 1744-7917 (Electronic) 1672-9609 (Linking) |
| Abstract: | "Longhorn beetles are among the most important groups of invasive forest insects worldwide. In parallel, they represent one of the most well-studied insect groups in terms of chemical ecology. Longhorn beetle aggregation-sex pheromones are commonly used as trap lures for specific and generic surveillance programs at points of entry and may play a key role in determining the success or failure of exotic species establishment. An exotic species might be more likely to establish in a novel habitat if it relies on a pheromone channel that is different to that of native species active at the same time of year and day, allowing for unhindered mate location (i.e., pheromone-free space hypothesis). In this study, we first tested the attractiveness of single pheromone components (i.e., racemic 3-hydroxyhexan-2-one, racemic 3-hydroxyoctan-2-one, and syn-2,3-hexanediol), and their binary and tertiary combinations, to native and exotic longhorn beetle species in Canada and Italy. Second, we exploited trap catches to determine their seasonal flight activity. Third, we used pheromone-baited 'timer traps' to determine longhorn beetle daily flight activity. The response to single pheromones and their combinations was mostly species specific but the combination of more than one pheromone component allowed catch of multiple species simultaneously in Italy. The response of the exotic species to pheromone components, coupled with results on seasonal and daily flight activity, provided partial support for the pheromone-free space hypothesis. This study aids in the understanding of longhorn beetle chemical ecology and confirms that pheromones can play a key role in longhorn beetle invasions" |
| Keywords: | Animals Coleoptera/*physiology *Insect Control Introduced Species Italy Seasons *Sex Attractants Species Specificity Cerambycidae Cerambycinae invasion process surveillance trapping; |
| Notes: | "MedlineRassati, Davide Marchioro, Matteo Flaherty, Leah Poloni, Riccardo Edwards, Sara Faccoli, Massimo Sweeney, Jon eng DOR/University of Padova/ 15-8130-0395-CA/Natural Resources Canada, Canadian Forest Service/ 17-8130-0395-CA/ Department of Agriculture, Animal and Plant Health Inspection Service/ Australia 2020/04/16 Insect Sci. 2021 Jun; 28(3):793-810. doi: 10.1111/1744-7917.12790. Epub 2020 Jul 28" |
