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Issue:ISSN 2095-1353
           CN 11-6020/Q
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Your Position :Home->Past Journals Catalog->2021年58 No.4

Effects of different antioxidants on the stability of monoterpene lures used to trap Monochamus alternatus
Author of the article:WU Hua DAI Jian-Qing CHEN Da-Song HUANG Hong
Author's Workplace:Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Engineering Research Center for Mineral Oil Pesticides, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China;Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Engineering Research Center for Mineral Oil Pesticides, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
Key Words:antioxidant; monoterpene; α-pinene; β-pinene; myrcene; Monochamus Alternatus; stability
Abstract:
[Objectives]  To investigate the effects of six antioxidants on the stability of monoterpene lures used to trap adult Monochamus alternatus Hope in the field. [Methods]  The effects of different antioxidants on the stability of α-pinene, β-pinene, and myrcene were determined by gas chromatography using the water bath heating and accelerated oxidation methods. A trapping assay of M. alternatus was carried out in forest. [Results]  Of the 6 antioxidants tested, TBHQ had the most significant protective effect on monoterpenes (P˂0.05). The concentration of TBHQ significantly affected monoterpene stability (F=6.631, P=0.007); the optimal concentration was 0.03% (P˂0.05). There were significant differences in the stability of the three monoterpenes α-pinene, β-pinene, and myrcene even with the same antioxidant (F=3.231, P=0.031); α-pinene was the most stable (P˂0.05). Field trapping results indicate that an olfactory lure comprised of 0.03% TBHQ and a ratio of α-pinene:β-pinene:myrtene of 50∶40∶10 extended the effectiveness of lures in forest by at least 30 days. [Conclusion]  Addition of antioxidant to protect monoterpenes significantly extends the life of monoterpene olfactory attractants used to trap M. alternatus in forest.
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