Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/22764
Tipo: Artigo
Título: Sex pheromone of Lonomia obliqua: daily rhythm of production, identification, and synthesis
Autor(es): Lima, Eraldo R.
Zarbin, Paulo H. G.
Lorini, Lisete M.
Ambrogi, Bianca G.
Vidal, Diogo M.
Abstract: The sex pheromone of Lonomia obliqua Walker (Lepidoptera: Saturniidae) was studied in the laboratory. All female calling occurred during the scotophase. Most females (70.6%) called first within 24 hr of eclosion. Calling varied with age of female, with older (5- to 6-day-old) females calling earlier in the scotophase and for longer durations than younger (0- to 1-day-old) females. The sex pheromone gland of 1- to 3-day-old virgin females was extracted during the calling peak. A Y-olfactometer bioassay showed significant attraction of males to a filter paper containing the female gland extract. Gas chromatographic-electroantennogram detection (GC-EAD) analysis of the extract indicated the presence of at least two possible pheromone components. Gas chromatographic-mass spectrometric analysis of the major GC-EAD-active peak indicated a hexadecenyl acetate; chemical derivatization indicated Δ11 unsaturation. Synthetic samples of (E)- and (Z)-11-hexadecenyl acetate were obtained by coupling 10-bromo-1-decanol and 1-hexyne, utilizing lithium chemistry. The comparison of the retention time of dimethyl disulfide derivatives of the natural compound, to those of synthetic chemicals, confirmed the natural compound as (E)-11-hexadecenyl acetate. The minor component was identified as the related alcohol, (E)-11-hexadecenol. The ratio of the two components in female extract was 100:35. Preliminary tests of males in a Y-olfactometer showed that their response to a mixture of the two compounds was not significantly different from that to gland extract.
Palavras-chave: Hemorrhagic caterpillar
Sex pheromone
(E)-11-Hexadecenyl acetate
(E)-11-Hexadecenol
Calling behavior
Editor: Journal of Chemical Ecology
Tipo de Acesso: Springer Science+Business Media, LLC 2007
URI: https://doi.org/10.1007/s10886-006-9246-1
http://www.locus.ufv.br/handle/123456789/22764
Data do documento: Mar-2007
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