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      Movement of Xylosandrus germanus (Coleoptera: Curculionidae) in Ornamental Nurseries and Surrounding Habitats.

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          Abstract

          Some exotic ambrosia beetles are damaging pests in ornamental nurseries. Xylosandrus germanus (Blandford) is the most problematic ambrosia beetle in Ohio nurseries. Movement of X. germanus in nurseries has not been characterized, and knowledge is lacking on whether infestations originate from within nurseries or surrounding habitats. Flight activity of X. germanus was monitored in nurseries and adjacent wooded areas to determine the source of beetles infesting nurseries, and characterize their movement within nurseries. Ethanol-baited bottle traps were positioned within wooded areas adjacent to commercial nurseries and within nurseries at various distances from the nursery woodlot interface. Flight activity of overwintered X. germanus occurred in wooded areas adjacent to nurseries before occurrence within nurseries. There was a direct relationship between degree-days and the distance from woodlots when X. germanus were first found in traps in spring, with earlier captures closest to wooded areas and latest ones furthest away into the nursery. X. germanus appeared to move into nurseries from adjacent wooded areas, with numbers trapped within nurseries decreasing with distance away from wooded areas. Trees in the interior of nurseries would appear to be subjected to less attack pressure than trees near the nursery border. Intercepting beetles as they move into nurseries might be an effective strategy to reduce attack pressure on valuable trees.

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          Author and article information

          Journal
          J Econ Entomol
          Journal of economic entomology
          Oxford University Press (OUP)
          0022-0493
          0022-0493
          Aug 2015
          : 108
          : 4
          Affiliations
          [1 ] Horticultural Insects Research Group, USDA-Agricultural Research Service, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691. mike.reding@ars.usda.gov.
          [2 ] Horticultural Insects Research Group, USDA-Agricultural Research Service, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691.
          [3 ] USDA-ARS Thad Cochran Southern Horticultural Lab, Poplarville, MS 39470.
          [4 ] Otis L. Floyd Nursery Research Center, Tennessee State Univ., College of Agriculture, Human, and Natural Sciences, McMinnville, TN 37110.
          [5 ] Hampton Roads Agricultural Research and Extension Center, Virginia Tech Univ., Virginia Beach, VA 23455.
          Article
          tov174
          10.1093/jee/tov174
          26470339
          11c01685-da96-43cf-a506-28ff7f7700df
          Published by Oxford University Press on behalf of Entomological Society of America 2015. This work is written by US Government employees and is in the public domain in the US.
          History

          ambrosia beetle,degree-days,dispersal,monitoring
          ambrosia beetle, degree-days, dispersal, monitoring

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