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Permanent link (DOI): https://doi.org/10.7939/R3NV99R3T

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Toxicity of Pine Monoterpenes to Mountain Pine Beetle Open Access

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Author or creator
Chiu, Christine C.
Keeling, Christopher I.
Bohlmann, Jeorg
Additional contributors
Subject/Keyword
Ecology
Ecophysiology
Secondary Metabolism
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
The mountain pine beetle (Dendroctonus ponderosae; MPB) is an eruptive bark beetle species afecting pine forests of western North America. MPB are exposed to volatile monoterpenes, which are important host defense chemicals. We assessed the toxicity of the ten most abundant monoterpenes of lodgepole pine (Pinus contorta), a major host in the current MPB epidemic, against adult MPB from two locations in British Columbia, Canada. Monoterpenes were tested as individual volatiles and included (−)-β-phellandrene, (+)-3-carene, myrcene, terpinolene, and both enantiomers of α-pinene, β-pinene and limonene. Dose-mortality experiments identifed (−)-limonene as the most toxic (LC50: 32μL/L), and (−)-α-pinene (LC50: 290μL/L) and terpinolene (LC50: >500μL/L) as the least toxic. MPB body weight had a signifcant positive efect on the ability to survive most monoterpene volatiles, while sex did not have a signifcant efect with most monoterpenes. This study helps to quantitatively defne the efects of individual monoterpenes towards MPB mortality, which is critical when assessing the variable monoterpene chemical defense profles of its host species.
Date created
2017
DOI
doi:10.7939/R3NV99R3T
License information
Attribution 4.0 International
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Citation for previous publication
Chiu, C. C., Keeling, C. I., & Bohlmann, J. (2017). Toxicity of Pine Monoterpenes to Mountain Pine Beetle. Scientific Reports, 7(1), 8858.  http://dx.doi.org/10.1038/s41598-017-08983-y

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