EAG and behavioural responses of the larger grain borer, Prostephanus truncatus, and its predator, Teretriosoma nigrescens, to the borer-produced aggregation pheromone

被引:17
作者
Scholz, D
Borgemeister, C
Poehling, HM
机构
[1] Leibniz Univ Hannover, Inst Pflanzenkrankheiten & Pflanzenschutz, D-30419 Hannover, Germany
[2] Int Inst Trop Agr, Plant Hlth Management Div, Cotonou, Benin
关键词
Bostrichidae; electroantennogram; Histeridae; olfactometer; pheromone perception; predator; Prostephanus truncatus; Teretriosoma nigrescens;
D O I
10.1046/j.1365-3032.1998.233089.x
中图分类号
Q96 [昆虫学];
学科分类号
摘要
Electroantennogram (EAG) and behavioural studies were conducted with Prostephanus truncatus (Horn) (Col.: Bostrichidae) and the predatory beetle, Teretriosoma nigrescens Lewis (Col: Histeridae) in regard to their responses to the components of the prey-produced aggregation pheromone. There were hardly any differences between species or sexes regarding perception thresholds. In field and olfactometer experiments, female P. truncatus were more responsive to the pheromone than males, and both sexes reacted more strongly to the minor pheromone component, T2, than to T1. Sex ratios among trap catches of I: nigrescens were slightly male-biased. .The predator did not differentiate behaviourally between the pheromone components.
引用
收藏
页码:265 / 273
页数:9
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