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Complex Genomic Landscape of Inversion Polymorphism in Europe's Most Destructive Forest Pest.
Genome Biol Evol
December 2024
Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, 30-387 Kraków, Poland.
Article Synopsis
- The study investigates polymorphic genomic inversions in the spruce bark beetle (Ips typographus), a significant forest pest in Europe, examining their prevalence and role in local adaptation.
- Researchers analyzed 240 individuals across 18 populations, identifying 27 polymorphic inversions that account for ~28% of the genome, revealing a complex genomic landscape influenced by recombination and overlap.
- The findings suggest that these inversions may be maintained by neutral processes rather than traditional evolutionary mechanisms, and they are notably enriched in genes related to odorant receptors, highlighting their potential impact on traits linked to ecological interactions.
Emission patterns of volatile organic compounds from Norway spruce logs following bark beetle (Ips typographus L.) infestation.
Tree Physiol
December 2024
Chair of Ecosystem Physiology, University of Freiburg, Georges-Köhler-Allee 53, Freiburg 79110, Germany.
Norway spruce (Picea abies L.) is economically one of the most important conifer species in Europe. Spruce forests are threatened by outbreaks of the bark beetle Ips typographus L.
View Article and Find Full Text PDFArticle Synopsis
- The paper introduces a checklist of bark and ambrosia beetles found in Armenia, identifying a total of 74 species from the Platypodinae and Scolytinae subfamilies.
- Four species are highlighted as newly recorded in Armenia, including Lymantor coryli and Ips typographus.
- Additionally, the study provides records for 61 other beetle species that were not previously listed in recent Catalogues of Palaearctic Curculionoidea.
Eurasian spruce bark beetle detects lanierone using a highly expressed specialist odorant receptor, present in several functional sensillum types.
BMC Biol
November 2024
Department of Biology, Lund University, Sölvegatan 37, 223 62, Lund, Sweden.
Background: Insects detect odours using odorant receptors (ORs) expressed in olfactory sensory neurons (OSNs) in the antennae. Ecologically important odours are often detected by selective and abundant OSNs; hence, ORs with high antennal expression. However, little is known about the function of highly expressed ORs in beetles, since few ORs have been functionally characterized.
View Article and Find Full Text PDFAsymmetric semiochemical-mediated interactions of Monochamus spp. (Coleoptera: Cerambycidae) and associated bark beetles in Portugal and Canada.
Environ Entomol
November 2024
INIAV IP, Avenida da República, Quinta do Marquês, Oeiras, Portugal.
Article Synopsis
- Some bark and woodboring beetles share the same trees and can interact in competitive or predatory ways, with larger woodborer larvae often having the advantage.
- Bark beetles have developed traits to avoid woodborer larvae, and both types of beetles use pheromones for mating and host location.
- Field experiments in Canada and Portugal showed that the woodborer pheromone monochamol reduces the capture of certain bark beetle species in traps, indicating that it may help bark beetles avoid interaction with woodborers.
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