Please use this identifier to cite or link to this item:

Title: Encoding of host and non-host plant odours by receptor neurones in the eucalyptus woodborer, Phoracantha semipunctata (Coleoptera: Cerambycidae)
Authors: Barata, Eduardo N.
Araújo, Jorge
Keywords: insect
gas chromatography
plant odour
Phoracantha semipunctata
Issue Date: 13-Feb-2002
Abstract: In the eucalyptus woodborer, Phoracantha semipunctata, responses from single receptor neurotics to host (Eucalyptus globulus) and non-host (Pinus pinaster, Olea europeae) plant odours were examined, using gas chromatography linked with electrophysiological recordings. Thirty-two compounds elicited responses that appeared as increased firing rates correlating with the elution of the active components. A subset of neurones classified as type A (n = 17) responded to one compound, a second subset B (n = 15) responded to two compounds and a third subset C (n = 9) responded to three or more compounds. For each neurone of type B or C, the active chemicals were structurally related. Neurotics responding to monoterpenes, sesquiterpenes and non-terpenoids, respectively, showed non-overlapping response spectra, whereas neurones within one chemical group showed some overlap. The results suggest that most neurotics, which receive information about plant odours, are narrowly rather than broadly tuned, each specialised for the detection of one or two related compounds. Although most neurones responded to compounds released by host and non-host species, a few responded specifically to compounds of only one species. This suggests a chemical "fingerprint" mechanism for discrimination between odour blends of the different plants, where only a few compounds may be specific for a particular species or individual.
Type: article
Appears in Collections:BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

Files in This Item:

File Description SizeFormat
Barata EN et al 2002.pdfArtigo em formato PDF246 kBAdobe PDFView/OpenRestrict Access. You can Request a copy!
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois