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Open AccessArticle

Simple Is Best: Pine Twigs Are Better Than Artificial Lures for Trapping of Pine Weevils in Pitfall Traps

National Forest Centre, Forest Research Institute Zvolen, T. G. Masaryka 22, 96001 Zvolen, Slovakia
Department of Forest Protection and Entomology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcka 1176, 16500 Prague, Czech Republic
Research Station of State Forests of TANAP, 05960 Tatranská Lomnica, Slovakia
Author to whom correspondence should be addressed.
Forests 2019, 10(8), 642;
Received: 26 June 2019 / Revised: 22 July 2019 / Accepted: 22 July 2019 / Published: 29 July 2019
(This article belongs to the Special Issue Impacts, Monitoring and Management of Forest Pests and Diseases)
The large pine weevil Hylobius abietis (Linnaeus 1758) is the main pest of coniferous seedlings in Europe and causes substantial damage in areas that have been clear-cut or otherwise disturbed. We compared the efficacy of different attractants for the capture of H. abietis adults in white pitfall traps. The field experiment was performed from mid-April to the end of August 2018 at six plots in Central Europe located in spruce stands that had been clear-cut. At each plot, we compared five attractants: one pine twig with ethanol, Hylodor, alpha-pinene + ethanol, turpentine oil and ethanol (separated), and turpentine oil + ethanol (not separated). Traps without attractant served as a control. Six traps for each attractant or control were distributed at each plot. Of the total number of H. abietis adults trapped, 43.3%, 20.5%, 17.9%, 9.8%, 8.5% and 0.5% were captured in traps with pine twigs with ethanol, alpha-pinene, Hylodor, turpentine, oil + ethanol (separated), turpentine oil + ethanol (combined), and no attractant, respectively. The bottom of each trap contained propylene glycol to kill and preserve beetles. The small number of beetles captured in the control traps confirms that the propylene glycol:water mixture did not influence the trapping of H. abietis. The use of pitfall traps with a suitable attractant (especially pine twigs and ethanol) should be useful for monitoring of H. abietis, because it is simple and cost-effective. The use of such pitfall traps to control H. abietis by mass trapping would require 50 to 100 traps per ha. View Full-Text
Keywords: Hylodor; alpha-pinene; turpentine oil; ethanol; propylene-glycol; Norway spruce Hylodor; alpha-pinene; turpentine oil; ethanol; propylene-glycol; Norway spruce
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MDPI and ACS Style

Lalík, M.; Holuša, J.; Galko, J.; Resnerová, K.; Kunca, A.; Nikolov, C.; Mudrončeková, S.; Surový, P. Simple Is Best: Pine Twigs Are Better Than Artificial Lures for Trapping of Pine Weevils in Pitfall Traps. Forests 2019, 10, 642.

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