| Title: | Addressing a century-old hypothesis - do pioneer beetles of Ips typographus use volatile cues to find suitable host trees? |
| Author(s): | Lehmanski LMA; Kandasamy D; Andersson MN; Netherer S; Alves EG; Huang J; Hartmann H; |
| Address: | "Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, 07745, Germany. Department of Biology, Lund University, Lund, 22362, Sweden. Max Planck Center for Next Generation Insect Chemical Ecology (nGICE), Department of Biology, Lund University, Lund, 22362, Sweden. Institute of Forest Entomology, Forest Pathology and Forest Protection, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, BOKU, Vienna, 1190, Austria. Institute for Forest Protection, Julius Kuhn-Institute Federal Research Centre for Cultivated Plants, Quedlinburg, 06484, Germany" |
| ISSN/ISBN: | 1469-8137 (Electronic) 0028-646X (Linking) |
| Abstract: | "Global warming and more frequent climate extremes have caused bark beetle outbreaks of unprecedented scale of these insects in many conifer forests world-wide. Conifers that have been weakened by drought and heat or damaged by storms are highly susceptible to bark beetle infestation. A large proportion of trees with impaired defences provides good conditions for beetle population build-up of beetles, but mechanisms driving host search of pioneer beetles are still uncertain in several species, including the Eurasian spruce bark beetle Ips typographus. Despite a two-century-long history of bark beetle research, we still lack a sufficient understanding of interactions between I. typographus and its host Norway spruce (Picea abies) to forecast future disturbance regimes and forest dynamics. Depending on the scale (habitat or patch) and beetle population state (endemic or epidemic), host selection is likely driven by a combination of pre and postlanding cues, including visual selection or olfactory detection (kairomones). Here, we discuss primary attraction mechanisms and how volatile emission profiles of Norway spruce may provide cues on tree vitality and suitability for attacks by I. typographus, in particular during the endemic phase. We identify several crucial knowledge gaps and provide a research agenda addressing the experimental challenges of such investigations" |
| Keywords: | Animals *Coleoptera Trees Cues Plant Bark *Weevils *Picea Norway spruce bark beetle monoterpenes primary attraction tree attractiveness volatile organic compounds; |
| Notes: | "MedlineLehmanski, Linda M A Kandasamy, Dineshkumar Andersson, Martin N Netherer, Sigrid Alves, Eliane Gomes Huang, Jianbei Hartmann, Henrik eng Research Support, Non-U.S. Gov't England 2023/03/08 New Phytol. 2023 Jun; 238(5):1762-1770. doi: 10.1111/nph.18865. Epub 2023 Mar 21" |
