Biological performance of <Emphasis Type="Italic">Eucalyptus camaldulensis</Emphasis> leaf oils from Thailand against the subterranean termite <Emphasis Type="Italic">Coptotermes formosanus</Emphasis> Shiraki |
| |
Authors: | Pornpun Siramon Yoshito Ohtani Hideaki Ichiura |
| |
Institution: | (1) Department of Forest Science, Faculty of Agriculture, Kochi University, B-200 Monobe, Nankoku, Kochi 783-8502, Japan |
| |
Abstract: | The antitermitic activities of leaf oils and their constituents, taken from three clones of Eucalyptus camaldulensis Dehnh. in Thailand, against Coptotermes formosanus Shiraki were investigated in contact and noncontact tests. The termiticidal mechanism was also examined. Antitermitic tests
demonstrated that E. camaldulensis leaf oils were both contact toxicants and fumigants to C. formosanus with LC50 values ranging between 12.68 and 17.50 mg/g by the contact method, and between 12.65 and 17.50 mg/petri dish (100 cm3) by the noncontact method. p-Cymene and γ-terpinene were primarily responsible for the contact toxicity and 1,8-cineole was responsible for fumigation.
From the investigation of termiticidal mechanism, E. camaldulensis leaf oils exhibited the inhibition of acetylcholinesterase activity and showed the common symptoms of a neurotoxic mode of
action against C. formosanus.
Part of this report was presented at the 58th Annual Meeting of the Japan Wood Research Society, Tsukuba, March 2008 |
| |
Keywords: | Antitermitic activity Coptotermes formosanus Shiraki Essential oil Eucalyptus camaldulensis |
本文献已被 SpringerLink 等数据库收录! |
|