« Previous Abstract"Biosynthetic pathway for producing the sex pheromone component (Z,E)-9,12-tetradecadienyl acetate in moths involves a delta 12 desaturase"    Next AbstractFloral scent compounds of Amazonian Annonaceae species pollinated by small beetles and thrips »

Arch Insect Biochem Physiol

Title:		"Identification of cuticular hydrocarbons and the alkene precursor to the pheromone in hemolymph of the female gypsy moth, Lymantria dispar"
Author(s):		Jurenka RA; Subchev M;
Address:		"Department of Entomology, Iowa State University, Ames, IA 50011-3222, USA. rjurenka@iastate.edu"
Journal Title:		Arch Insect Biochem Physiol
Year:		2000
Volume:		43
Issue:		3
Page Number:		108 - 115
DOI:		10.1002/(SICI)1520-6327(200003)43:3<108::AID-ARCH2>3.0.CO;2-V
ISSN/ISBN:		0739-4462 (Print) 0739-4462 (Linking)
Abstract:		"Hydrocarbons were extracted from the surface of the cuticle and from the hemolymph of adult female gypsy moths. GC and GC/MS analysis indicated that the cuticular hydrocarbons with chain lengths >21 carbons were the same as those found in the hemolymph. These consisted of mostly saturated straight chain hydrocarbons with heptacosane the major component. Methyl branched hydrocarbons were also identified including a series of tetramethylalkanes with chain lengths of 30, 32, and 34 carbons. In addition to those found on the cuticle surface, the hemolymph contained the alkene pheromone precursor, 2-methyl-Z7-octadecene and two saturated analogues, 2-methyl-octadecane and 2-methyl-hexadecane. No evidence was obtained for the presence of the pheromone 2-methyl-7, 8-epoxy-octadecane in the hemolymph. Pheromone gland extracts indicated that small amounts (<1 ng) of the alkene precursor were also present in the gland. Relatively larger amounts of the alkene precursor were found in the hemolymph at the time when pheromone titers were higher on the gland. The presence of the hydrocarbon pheromone precursor in the hemolymph is discussed in relation to possible biosynthetic pathways for producing the gypsy moth pheromone"
Keywords:		"Alkanes/*blood/chemistry Alkenes/blood/chemistry Animals Chromatography, Gas/veterinary Female Gas Chromatography-Mass Spectrometry/veterinary Hemolymph/*physiology Hydrocarbons, Acyclic/*blood/chemistry Moths/*physiology Pheromones/blood/chemistry/*physi;"
Notes:		"MedlineJurenka, R A Subchev, M eng Research Support, U.S. Gov't, Non-P.H.S. 2000/02/24 Arch Insect Biochem Physiol. 2000 Mar; 43(3):108-15. doi: 10.1002/(SICI)1520-6327(200003)43:3<108::AID-ARCH2>3.0.CO; 2-V"