Journal Article

Sex Pheromone of <i>Choristoneura parallela</i> (Lepidoptera: Tortricidae): Components and Development of a Pheromone Lure for Population Monitoring

Sridhar Polavarapu and Greg Lonergan

in Environmental Entomology

Published on behalf of Entomological Society of America

Volume 27, issue 5, pages 1242-1249
Published in print October 1998 | ISSN: 0046-225X
Published online September 2014 | e-ISSN: 1938-2936 | DOI: https://dx.doi.org/10.1093/ee/27.5.1242
Sex Pheromone of Choristoneura parallela (Lepidoptera: Tortricidae): Components and Development of a Pheromone Lure for Population Monitoring

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The sex pheromone components of Choristoneura parallela (Robinson) were investigated using gas chromatography-electroantennogram detection (GC-EAD) and GC-mass spectrometry (GC-MS) analysis of sex pheromone glands and gland-released volatiles. Analysis of gland-released volatiles indicated the presence of (E)-11-tetradecenol (E11-14:OH), (E)-11-tetradecenyl acetate (E11-14:Ac), and (Z)-11-tetradecenol (Z11-14:OH). Whole-gland extracts contained the above components as well as (Z)-11-tetradecenyl acetate (Z11-14:Ac), and tetradecanol (14:OH). The E11-14:0H/E11-14:Ac ratios in the gland and effluvia were ≈4:1 and 20–50:1, respectively. The cis isomers of both the 11-14:OH and 11-14:Ac were present in the gland at 3–5 and 1–2% of that of the corresponding E isomers, respectively. The presence of tetradecanol (14:OH), a previously identified component in the gland, could not be confirmed by GC-EAD or GC-MS in the effluvia. Among the various blends evaluated in the field, blends containing E11-14:OH (major pheromone component), E11-14:Ac, and Z11-14:OH in the range of 100:1–4:1–5 ratios, respectively, were equally effective in trapping C. parallela moths. The ratio of E11-14:OH to E11-14:Ac appears to be more critical than the ratio of E11-14:OH to Z11-14:OH. Moth catches were significantly lower in traps baited with E11-14:OH, E11-14:Ac, Z11-14:OH, and 14:OH in the ratios of 100:1:1:1–10 than in traps baited with the first 3 components alone at 100:1:1 ratio. Addition of Z11-14:Ac to blends containing the above 3 components in a 100:4:5 or 100:1:5 ratio did not improve trap catches. Rubber septa containing E11-14:OH, E11-14:Ac, and Z11-14:OH, in 100:4:5 ratio, at 30 to 3,000-μg loading of the major component were evaluated in a field test. Moth catches were not significantly different among traps baited with 300 to 3,000-μg loading of the major component. In 2 separate field tests, traps baited with the above 3 components in 100:4:5 ratio captured as many moths as traps baited with the most attractive 4-component blend identified in a previous study.

Keywords: Choristoneura parallela; Vaccinium macrocarpon; sex pheromones; (E)-11-tetradecenol; (E)-11-tetradecenyl acetate; cranberries

Journal Article.  0 words. 

Subjects: Entomology

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