Response of the seven-spot ladybird to an aphid alarm pheromone and an alarm pheromone inhibitor is mediated by paired olfactory cells

被引：128

作者：

Al Abassi, S

Birkett, MA

Pettersson, J

Pickett, JA ^{[1
]}

Wadhams, LJ

Woodcock, CM

机构：

[1] AFRC, Inst Arable Crops Res, Dept Biol & Ecol Chem, Harpenden AL5 2JQ, Herts, England

[2] Swedish Univ Agr Sci, Dept Entomol, S-75007 Uppsala, Sweden

来源：

JOURNAL OF CHEMICAL ECOLOGY | 2000年 / 26卷 / 07期

基金：

英国生物技术与生命科学研究理事会;

关键词：

seven-spot ladybird; Coccinella septempunctata; Coleoptera; Coccinellidae; electrophysiology; single neuron recording; dose-response; behavior; olfactometer; aphid alarm pheromone; (E)-beta-farnesene; (-)-beta-caryophyllene;

D O I：

10.1023/A:1005555300476

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Electrophysiological responses of adult seven-spot ladybirds, Coccinella septempunctata, to (E)-beta-farnesene, an aphid alarm pheromone, and (-)-beta-caryophyllene, a plant-derived alarm pheromone inhibitor, were investigated by recording from single olfactory cells (neurons) on the antenna. Cells having high specificity for each of the two compounds were identified. Furthermore, these two cell types were frequently found in close proximity, with a larger amplitude consistently recorded for the cell responding specifically to (E)-beta-farnesene. preliminary behavioral studies in a two-way olfactometer showed that walking adults were significantly attracted to (E)-beta-farnesene; this activity was inhibited with increasing proportions of (-)-beta-caryophyllene, The possible ecological significance of colocation or pairing of olfactory cells for semiochemicals with different behavioral roles is discussed.

引用

页码：1765 / 1771

页数：7

共 25 条

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