Studies on the natural dispersal of Anoplophora glabripennis
In 1999, studies were done in Gansu Province in China, on the natural dispersal of Anoplophora glabripennis (Coleoptera: Cerambycidae – EPPO A1 quarantine pest), as this is an important factor to be taken into account in survey and eradication programmes. The landscape of the area studied was composed of host trees (Populus, Salix, Ulmus – 72.3 %) and non-hosts (27.3%). The site was composed of trees planted as wind-rows bordering agricultural fields, of isolated trees and trees planted near houses or glasshouses. 16,511 adults were marked, released and recaptured (188 beetles were recaptured), and dispersal distances were measured. Results showed that the mean dispersal distance was approximately 266 m. 98;% of the beetles were recaptured within a radius of 560 m. Over a single season, the maximum dispersal distances were respectively, 1029 m and 1442 m for a male and a gravid female. This is higher than previously reported. Earlier studies were made in plantations of host plants where preferred host trees are available on shorter distances. This shows that surveys for A. glabripennis should include trees within a radius of 1500 m from infested trees.
Sources
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Smith, M.T.; Bancroft, J.; Li, G.; Gao, R.; Teale, S. (2001) Dispersal of Anoplophora glabripennis.
Environmental Entomology, 30(6), 1036-1040.
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