Differences in cuticular lipid composition of the antennae of Helicoverpa zea, Heliothis virescens, and Manduca sexta.
Analyses of the hexane washes of antennae, forelegs and whole bodies of Helicoverpa zea, Heliothis virescens, and Manduca sexta revealed notable differences in the components of the cuticular coatings of each species. Most striking were the differences between the cuticular coatings of male and female antennae of both H. zea and H. virescens. Novel esters of short-chain acids (C2-C4) and long-chain secondary alcohols (C25-C32) were identified in the hexane washes of the male antenna and forelegs of H. zea and H. virescens. These compounds were found in only small amounts or were completely absent on the female antennae of both species. In H. zea, butyrates of 7- and 8-pentacosanol and 8- and 9-heptacosanol were found, whereas, in the foreleg extracts of H. virescens, acetates and propionates were detected in addition to butyrates. While cholesterol is a major component of antennal washes (10-15%), only traces were found in the foreleg extracts. Although the composition of the cuticular coating of M. sexta differed greatly from that of the other two species, the extractable coatings of the antennae of male and female M. sexta were nearly identical.
Böröczky
Katalin
K
Center for Chemical Ecology, Department of Entomology, The Pennsylvania State University, University Park, PA 16802, USA. katalin_by@yahoo.com
Park
Kye Chung
KC
Minard
Robert D
RD
Jones
Tappey H
TH
Baker
Thomas C
TC
Tumlinson
James H
JH
D000818:Animals; D004952:Esters / Q000378:metabolism; D005260:Female; D005552:Forelimb / Q000737:chemistry / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry; D007301:Insect Hormones / Q000378:metabolism; D050356:Lipid Metabolism; D008297:Male; D018402:Manduca; D009036:Moths / Q000737:chemistry / Q000378:metabolism*; D012679:Sense Organs / Q000378:metabolism*; D012727:Sex Characteristics
D004952:Esters; D007301:Insect Hormones