| Title: | Coffee berry borer joins bark beetles in coffee klatch |
| Author(s): | Jaramillo J; Torto B; Mwenda D; Troeger A; Borgemeister C; Poehling HM; Francke W; |
| Address: | "Institute of Plant Diseases and Plant Protection, Leibniz University Hannover, Hannover, Germany ; International Center of Insect Physiology and Ecology (icipe), Nairobi, Kenya" |
| DOI: | 10.1371/journal.pone.0074277 |
| ISSN/ISBN: | 1932-6203 (Electronic) 1932-6203 (Linking) |
| Abstract: | "Unanswered key questions in bark beetle-plant interactions concern host finding in species attacking angiosperms in tropical zones and whether management strategies based on chemical signaling used for their conifer-attacking temperate relatives may also be applied in the tropics. We hypothesized that there should be a common link in chemical signaling mediating host location by these Scolytids. Using laboratory behavioral assays and chemical analysis we demonstrate that the yellow-orange exocarp stage of coffee berries, which attracts the coffee berry borer, releases relatively high amounts of volatiles including conophthorin, chalcogran, frontalin and sulcatone that are typically associated with Scolytinae chemical ecology. The green stage of the berry produces a much less complex bouquet containing small amounts of conophthorin but no other compounds known as bark beetle semiochemicals. In behavioral assays, the coffee berry borer was attracted to the spiroacetals conophthorin and chalcogran, but avoided the monoterpenes verbenone and alpha-pinene, demonstrating that, as in their conifer-attacking relatives in temperate zones, the use of host and non-host volatiles is also critical in host finding by tropical species. We speculate that microorganisms formed a common basis for the establishment of crucial chemical signals comprising inter- and intraspecific communication systems in both temperate- and tropical-occurring bark beetles attacking gymnosperms and angiosperms" |
| Keywords: | "Animals Behavior, Animal *Coffee Coleoptera/*physiology Electrophysiology Gas Chromatography-Mass Spectrometry Host-Parasite Interactions Magnoliopsida/physiology Pheromones/*analysis Plant Bark/*physiology Volatilization;" |
| Notes: | "MedlineJaramillo, Juliana Torto, Baldwyn Mwenda, Dickson Troeger, Armin Borgemeister, Christian Poehling, Hans-Michael Francke, Wittko eng Research Support, Non-U.S. Gov't 2013/09/28 PLoS One. 2013 Sep 20; 8(9):e74277. doi: 10.1371/journal.pone.0074277. eCollection 2013" |
