(<Emphasis Type="Italic">Z</Emphasis>)-7-Hexadecene is an Aggregation-Sex Pheromone Produced by Males of the South American Cerambycid Beetle <Emphasis Type="Italic">Susuacanga octoguttata</Emphasis> |
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| Authors: | Weliton D Silva José Maurício S Bento Lawrence M Hanks Jocelyn G Millar |
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| Affiliation: | 1.Department of Entomology and Acarology,University of S?o Paulo,Piracicaba,Brazil;2.Department of Entomology,University of Illinois at Urbana-Champaign,Urbana,USA;3.Departments of Entomology and Chemistry,University of California,Riverside,USA |
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| Abstract: | We describe the identification, synthesis, and field bioassays of a novel aggregation-sex pheromone produced by males of Susuacanga octoguttata (Germar), a South American cerambycid beetle. Analyses of extracts of headspace volatiles produced by adult beetles revealed a sex-specific compound emitted by males which was identified as (Z)-7-hexadecene by microchemical and spectroscopic analyses. The synthesized pheromone was attractive to beetles of both sexes in field trials. This unsaturated hydrocarbon motif is unprecedented among cerambycid pheromones identified to date. During field bioassays, we serendipitously discovered that adults of S. octoguttata trapped in two Brazilian biomes differed considerably in elytral markings, although males from both populations produced (Z)-7-hexadecene as an aggregation-sex pheromone. |
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