Trap deployment along linear transects perpendicular to forest edges: impact on capture of longhorned beetles (Coleoptera: Cerambycidae)
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Forests provide important ecosystem services, and the need for these services is expected to increase. Although disturbances are often important components of management plans for forest ecosystems, management efforts often target the prevention and mitigation of disturbances that threaten these services. Exotic insects are an increasingly important disturbance agent in terms of ecological and economic impacts, particularly large woodborers in the family Cerambycidae. Semiochemical-baited traps are important components of management programs. This study looked at the effect of trap location along a horizontal edge—forest gradient with traps deployed in forest clearings adjacent to forests, at the forest—clearing edge and in the forest. Nine species were captured in high enough numbers for analysis, and significant effects of trap location relative to the edge were observed in all but one. Three patterns of edge effects were observed. In general, Acmaeops proteus proteus (Kirby) was more abundant at the edge than in the forest interior; male and female Monochamus mutator LeConte and Monochamus scutellatus (Say) were more abundant in the clearing adjacent to the forest than in the forest; and Anelaphus pumilus (Newman), Euderces pini (Fabricius), Neoclytus acuminatus (Fabricius), male and female Monochamus carolinensis (Olivier) and female Monochamus titillator (Fabricius) were more abundant in the forest than the adjacent clearing. These results demonstrate that non-targeted surveys for Cerambycidae should deploy traps in multiple locations along the forest edge-interior gradient and that taxa-specific surveys should be developed based on knowledge of how this gradient impacts trap performance.
KeywordsWoodborer Pest management Survey and detection Sampling
This work was funded by Natural Resources Canada, the US Department of Agriculture—Forest Service, US Department of Agriculture—Animal and Plant Health Inspection Service—Plant Protection Quarantine, and the Canadian Food Inspection Agency. The authors thank Nick Boyonoski, Isabelle Ochoa, Matt Cloud, Karen Reed and Steven Walters for field assistance and processing and identification of insects in the laboratory, and Deepa Abeysekara for work on the synthesis of the syn-2,3-hexanediols.
This work was supported in part by funding from Natural Resources Canada, the US Department of Agriculture—Forest Service, US Department of Agriculture—Animal and Plant Health Inspection Service—Plant Protection Quarantine, and the Canadian Food Inspection Agency.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Human and animal rights
This article does not contain any studies with human participants or animals performed by any of the authors.
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