Male-specific volatiles released by the brazilian papaya weevil, pseudopiazurus obesus: partial identification and evidence of an aggregation pheromone

Journal of the Brazilian Chemical Society

Paulo H. G. Zarbin²  Marcos A. B. Moreira²  Jenny Haftmann¹  Wittko Francke¹  Alfredo R. M. Oliveira² 

[1] ,Universidade Federal do Paraná Departamento de Química Curitiba PR ,Brazil

关键词: Curculionidae;    olfactometer;    kairomone;    grandisal;    grandisol;   

DOI  :  10.1590/S0103-50532007000500026

来源: SciELO

【 摘 要 】

The behavioral responses of adult male and female Pseudopiazurus obesus (Boheman, 1838) (Coleoptera: Curculionidae) to several odour sources were evaluated in a Y-tube olfactometer. Males and females insects were significantly more attracted to a combination of volatiles released by males of the species and host plant, suggesting the existence of a male-produced aggregation pheromone. Comparative analysis of the volatiles released by males and females revealed three male-specific compounds, in a ratio of 77:14:9, providing a chemical support to the behavioral observations. (1R,2S)-(+)-Grandisal and (1R,2S)-(+)-grandisol were identified as the major and intermediate compounds, respectively, while the chemical structure of the minor compound, that seems to be a new grandisol derivative, still remains to be determined. These three compounds are the most important pheromone candidates in the species.

【 授权许可】

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