Document Detail


Identification of sex pheromone components of a New Zealand geometrid moth, the common forest looper Pseudocoremia suavis, reveals a possible species complex.
MedLine Citation:
PMID:  16718574     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Gas chromatography-electroantennographic detection analysis of sex pheromone gland extracts of the common forest looper Pseudocoremia suavis (Lepidoptera: Geometridae), a polyphagous defoliator of introduced Pinaceae and many New Zealand trees, revealed four compounds that elicited antennal responses. The two major active compounds (6Z)-cis-9,10-epoxynonadec-6-ene and (3Z,6Z)-cis-9,10-epoxynonadeca-3,6-diene were identified by comparison with known standards. Of the two minor active compounds, one was tentatively identified as (3Z,6Z)-cis-9,10-epoxyhenicosa-3,6-diene, whereas the other could not be identified because of insufficient amounts in extracts. (6Z)-cis-9,10-Epoxynonadec-6-ene, (3Z,6Z)-cis-9,10-epoxynonadeca-3,6-diene, and (3Z,6Z)-cis-9,10-epoxyhenicosa-3,6-diene were present in P. suavis gland extracts from Eyrewell Forest, a Pinus radiata plantation in the South Island of New Zealand, in a ratio of 35:65:5, respectively. Trapping trials in Eyrewell Forest established that (6Z)-cis-9,10-epoxynonadec-6-ene attracted male P. suavis. However, addition of (3Z,6Z)-cis-9,10-epoxyhenicosa-3,6-diene to the lure at <10% of (6Z)-cis-9,10-epoxynonadec-6-ene reduced capture of male moths, suggesting that one of its enantiomers was acting as a behavioral antagonist. During January-March of 2005, a blend trial involving single, binary, and ternary mixtures of the three components at Eyrewell Forest and at three other sites (two in the South Island and one in the North Island) revealed the existence of a second taxon of P. suavis at the three additional sites that was attracted to lures containing (3Z,6Z)-cis-9,10-epoxynonadeca-3,6-diene, either singly or in binary and ternary mixtures with (6Z)-cis-9,10-epoxynonadec-6-ene and (3Z,6Z)-cis-9,10-epoxyhenicosa-3,6-diene. This second taxon was not attracted to lures loaded solely with (6Z)-cis-9,10-epoxynonadec-6-ene.
Authors:
A R Gibb; D Comeskey; L Berndt; E G Brockerhoff; A M El-Sayed; H Jactel; D M Suckling
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-04-27
Journal Detail:
Title:  Journal of chemical ecology     Volume:  32     ISSN:  0098-0331     ISO Abbreviation:  J. Chem. Ecol.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-05-23     Completed Date:  2006-12-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7505563     Medline TA:  J Chem Ecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  865-79     Citation Subset:  IM    
Affiliation:
Horticulture and Food Research Institute of New Zealand Ltd., Lincoln, New Zealand. agibb@hortresearch.co.nz
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MeSH Terms
Descriptor/Qualifier:
Animals
Behavior, Animal / physiology
Female
Gas Chromatography-Mass Spectrometry
Male
Moths / physiology*
New Zealand
Pinus
Scent Glands / metabolism
Sex Attractants / chemistry*,  physiology
Chemical
Reg. No./Substance:
0/Sex Attractants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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