Characteristics of logs with signs of oviposition by the polyphagous xylophage Asian longhorned beetle (Coleoptera: Cerambycidae)

Author:

Turgeon Jean J1ORCID,Pedlar John H1,Fournier Ronald E1ORCID,Smith Michael T2,Orr Mary3,Gasman Ben3

Affiliation:

1. Natural Resources Canada—Canadian Forest Service, Great Lakes Forestry Centre , 1219 Queen Street East , Sault Ste. Marie, ON P6A 2E5, Canada

2. USDA Agricultural Research Service, Beneficial Insects Introduction Research Lab , 501 S Chapel Street , Newark, DE 19713, USA

3. Canadian Food Inspection Agency , 1124 Finch Avenue West, Unit 2 , Toronto, ON M3J 2E2, Canada

Abstract

Abstract During the eradication program undertaken against Anoplophora glabripennis (Motschulsky) in the Greater Toronto Area, information was collected on the numerous signs of injury found on wounded trees. Herein, we used a portion of this information to assess the characteristics of logs with signs of oviposition (i.e., pits). Specifically, we related the basal diameter, type (log bole vs. log branch), height above ground, and branch hierarchy level of logs with pits to tree size (i.e., height and diameter at breast height) and level of infestation intensity. In general, pits were concentrated on logs from the bole and branches that were 8–14 cm in diameter in the lower 8 m of the bole and in the first 2 levels of the branching hierarchy. Oviposition pit location was strongly influenced by tree size—both height and diameter at breast height, with more pits on the lower bole in small trees and then higher on the bole and into the branches as tree size increased. As tree-level infestation intensity increased, pits were found on both larger and smaller diameter portions of the trees, presumably as preferred oviposition sites became saturated. These findings can improve the efficacy of surveillance activities for A. glabripennis.

Publisher

Oxford University Press (OUP)

Reference40 articles.

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