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    Author(s): Cesar R. Rodriguez-Saona; James R. Miller; Therese M. Poland; Tina M. Kuhn; Gard W. Otis; Tonya Turk; Daniel L. Ward
    Date: 2007
    Source: The Great Lakes Entomologist. 40: 1-16.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (387.0 KB)

    Description

    A 2-year study was conducted in Canada (2003) and the United States (2005) to better understand searching and mating behaviors of adult Agrilus planipennis Fairmaire. In both field and laboratory, adults spent more time resting and walking than feeding or flying. The sex ratio in the field was biased towards males, which tended to hover around trees, likely looking for mates. There was more leaf feeding damage within a tree higher in the canopy than in the lower canopy early in the season, but this difference disappeared over time. In choice experiments, males attempted to mate with individuals of both sexes, but they landed more frequently on females than on males. A series of sexual behaviors was observed in the laboratory, including: exposure of the ovipositor/ genitalia, sporadic jumping by males, attempted mating, and mating. Sexual behaviors were absent among 1-3 day-old beetles, but were observed regularly in 10-12 day-old beetles. Females were seen exposing their ovipositor, suggestive of pheromone-calling behavior. No courtship was observed prior to mating. Hovering, searching, and landing behaviors suggest that beetles most likely rely on visual cues during mate finding, although host-plant volatiles and/or pheromones might also be involved.

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    Citation

    Rodriguez-Saona, Cesar R.; Miller, James R.; Poland, Therese M.; Kuhn, Tina M.; Otis, Gard W.; Turk, Tonya; Ward, Daniel L. 2007. Behaviours of adult emerald ash borer, Agrilus planipennis (Coleoptera: Buprestidae). The Great Lakes Entomologist. 40: 1-16.

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