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Comp Biochem Physiol C Toxicol Pharmacol

Title:		"Transport of methyl eugenol-derived sex pheromonal components in the male fruit fly, Bactrocera dorsalis"
Author(s):		Kah-Wei Hee A; Tan KH;
Address:		"School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia. ahee@hortresearch.co.nz"
Journal Title:		Comp Biochem Physiol C Toxicol Pharmacol
Year:		2006
Volume:		20060429
Issue:		4
Page Number:		422 - 428
DOI:		10.1016/j.cbpc.2006.04.009
ISSN/ISBN:		1532-0456 (Print) 1532-0456 (Linking)
Abstract:		"Males of Bactrocera dorsalis (Diptera: Tephritidae) are attracted strongly to and feed compulsively on methyl eugenol (1,2-dimethoxy- 4 -(2-propenyl)benzene), a highly potent male attractant. Pharmacophagy of methyl eugenol results in the production of phenylpropanoids 2-allyl-4,5-dimethoxyphenol and (E)-coniferyl alcohol that are sequestered and stored in the rectal gland prior to release as sex pheromonal components during mating at dusk. While these pheromonal components have also been detected in the hemolymph and crop of methyl eugenol-fed males, there is currently little information on the transport of these compounds from the crop to rectal gland in male B. dorsalis. Therefore, using physiological techniques such as parabiosis, rectal gland transplantation and hemolymph transfusion coupled with gas chromatography-mass spectrometry (GC-MS) analyses, we were able to ascertain and confirm the role of the hemolymph in the transport of these sex pheromonal components from the crop to the rectal gland. Further, the temporal profile of these methyl eugenol-derived bioactive compounds in the hemolymph also shows an increase with time post-methyl eugenol-feeding, i.e., 2-allyl-4,5-dimethoxyphenol attaining maximum amounts 15 min after ME consumption and decreasing thereafter, while for (E)-coniferyl alcohol-the increase and decrease are more gradual. These results further demonstrate the ability of insect hemolymph to transport many diverse forms of bioactive molecules including attractant-derived sex pheromonal components"
Keywords:		Animals Eugenol/*analogs & derivatives/metabolism Hemolymph/*metabolism Male Parabiosis Salt Gland/metabolism/transplantation Sex Attractants/*metabolism Tephritidae/*metabolism;
Notes:		"MedlineKah-Wei Hee, Alvin Tan, Keng-Hong eng Research Support, Non-U.S. Gov't 2006/06/06 Comp Biochem Physiol C Toxicol Pharmacol. 2006 Aug; 143(4):422-8. doi: 10.1016/j.cbpc.2006.04.009. Epub 2006 Apr 29"