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

Haftmann, Jenny¹  Oliveira, Alfredo R. M.¹  Francke, Wittko¹  Zarbin, Paulo H. G.¹  Moreira, Marcos A. B.¹  Universidade Federal do Paraná, Curitiba, Brazil¹  University of Hamburg, Hamburg, Germany¹ 

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

DOI  :  10.1590/S0103-50532007000500026

学科分类：化学（综合）

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】

Unknown