Issue:ISSN 2095-1353
CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Tel:+86-10-64807137
Fax:+86-10-64807137
Email:entom@ioz.ac.cn
Your Position :
Home->Past Journals Catalog->
2009年46 No.2
Author of the article:
Author's Workplace:
Key Words:Pinus tabuliformis, monoterpenes, Dendroctonus valens, electroantennagram, olfactory responses
Abstract:
The volatiles profiles of health, damaged and resistant Chinese pine, Pinus tabuliformis, were surveyed with Super-Q absorbent in headspace absorption method. GC-MS analysis showed that few monoterpenes were detected from health pines, in which α-pinene accounted for more than 97%. After pines were damaged,several kinds of monoterpene were released, includig αpinene, camphene, 3-carene, β-pinene, myrcene, limonene, terpinolene, βphellandrene and longifoleneThe composition of monoterpenes in resistant pines was more complex than damaged pines. ANOVA analysis showed that the relative abundance of αpinene displaying an obvious decreasing in the sequence of health pines > damaged pines > resistant pines. The abundance of 3-carene in damaged pines was higher than that in healthy and resistant pines. The relative content of limonene, camphene and terpinolene in damaged pines increased significantly. The abundance of β-pinene, myrcene and βphellandrene were similar in different pines. Electroantennagram (EAG) and olfactometer were employed to analyze the antennal and behavioral responses of Dendroctuns valens LeConte to the major terpenes in laboratory. It was consistent with the previous field results that (+)-3-carene was the most antennal active and attractive to D. lens. There was no significant difference between (R)-(+)-α-pinene and (S)-(-)-α-pinene in antennal and olfactory sponses
by D. valens. The importance of monoterpenes quantitative differences in host location of D. valens was discussed.