| Title: | "Chemical, electrophysiological, and behavioral investigations on the sex pheromone of lackey moth, Malacosoma neustrium" |
| Author(s): | Rotundo G; Germinara GS; De Cristofaro A; |
| Address: | "Department of Animal, Plant and Environmental Sciences, University of Molise, Via De Sanctis, 86100 Campobasso, Italy. rotundo@unimol.it" |
| DOI: | 10.1023/b:joec.0000045595.75746.42 |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "The lackey moth Malacosoma neustrium (L.) (Lepidoptera Lasiocampidae) is a common pest of many forest and cultivated broadleaf trees. Analysis by GC-EAD of gland extracts and female effluvia showed the presence of two active peaks that were characterized as (E,Z)-5,7-dodecadienal (E5,Z7-12:Ald) and (E,Z)-5,7-dodecadienol (E5,Z7-12:OH) according to their GC retention times, mass spectra, and electroantennographic activity. (E,Z)-5,7-dodecadienyl acetate (E5,Z7-12:Ac) was also detected in the gland extracts. The average amounts of E5,Z7-12:Ald, E5,Z7-12:OH, and E5,Z7-12:Ac extracted from an abdominal tip were 113.2 +/- 22.0 ng, 29.9 +/- 6.2 ng, and 11.6 +/- 2.0 ng, respectively. In the effluvia from single females, on the average, 1.9 +/- 0.7 ng/min of aldehyde and 0.3 +/- 0.1 ng/min of alcohol were collected. In wind tunnel tests, male behavioral sequences elicited by E5,Z7-12:Ald alone or in 3:1 and 9:1 blends with the corresponding alcohol were similar to those evoked by one female equivalent of sex pheromone gland extract. Field trapping experiments showed that E5,Z7-12:Ald is essential to attract male moths. On adding E5,Z7-12:OH to E5,Z7-12:Ald in 1:3 and 1:9 ratios, male attraction slightly increased whereas in a 1:1 ratio, the attractiveness of E5,Z7-12:Ald was reduced" |
| Keywords: | "Acetates/pharmacology Aldehydes/pharmacology Animals Chromatography, Gas Dose-Response Relationship, Drug Electrophysiology Female Gas Chromatography-Mass Spectrometry Male Moths/*chemistry Seasons Sex Attractants/*chemistry/isolation & purification/pharm;" |
| Notes: | "MedlineRotundo, Giuseppe Germinara, Giacinto Salvatore de Cristofaro, Antonio eng Comparative Study Research Support, Non-U.S. Gov't 2004/12/22 J Chem Ecol. 2004 Oct; 30(10):2057-69. doi: 10.1023/b:joec.0000045595.75746.42" |
