Antagonism of Pheromone Response of Ostrinia nubilalis Males and Implications on Behavior in the Laboratory and in the Field
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- 作者：Magi Riba ; Albert Sans ; Joan Solé ; Lourdes Muñ ; oz ; M. Pilar Bosch ; Gloria Rosell ; and A. Guerrero
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2005
- 出版时间：February 23, 2005
- 年：2005
- 卷：53
- 期：4
- 页码：1158 - 1165
- 全文大小：143K
- 年卷期：v.53,no.4(February 23, 2005)
- ISSN：1520-5118
文摘
The antagonistic effect on the pheromone response and catabolism of male European corn borers,Ostrinia nubilalis, by several trifluoromethyl ketones is reported. (Z)-11-Tetradecenyl trifluoromethylketone (Z11-14:TFMK), the most closely related analogue of the main component of the pheromone,elicits a remarkable disruptive effect on close approach and source contact of males flying to a sourcebaited with mixtures of the pheromone and the antagonist in 5:1 and 10:1 ratios. In this experiment,the male displayed an erratic flight track with frequent counter turns and intersections with the plume.In the field, the TFMK significantly lowered the number of males caught when mixed with thepheromone in a 10:1 ratio in comparison with the natural attractant. The compound was also a goodinhibitor of the antennal esterase of the insect with a IC50 value of 0.28 
M. The homologous (Z)-10-tridecenyl trifluoromethyl ketone, with one carbon less in the chain, also elicited an antagonisticeffect in the wind tunnel, but in the field, the results were not conclusive. The effect induced waslower than the one displayed by Z11-14:TFMK including the activity as the esterase inhibitor (IC50value of 7.55 M). The saturated tetradecyl trifluoromethyl ketone, tetradecyltrifluoropyruvamide, and(Z)-11-2-thiatetradecenyl trifluoromethyl ketone resulted completely inactive. The results obtained inconjunction to the previously shown low toxicity to mice by related trifluoromethyl ketones providenew important data for the putative utilization of these chemicals as new pest control agents.Keywords: Pheromone antagonism; esterase inhibition; Ostrinia nubilalis; trifluoromethyl ketones;European corn borer; wind tunnel; field tests
M. The homologous (Z)-10-tridecenyl trifluoromethyl ketone, with one carbon less in the chain, also elicited an antagonisticeffect in the wind tunnel, but in the field, the results were not conclusive. The effect induced waslower than the one displayed by Z11-14:TFMK including the activity as the esterase inhibitor (IC50value of 7.55 M). The saturated tetradecyl trifluoromethyl ketone, tetradecyltrifluoropyruvamide, and(Z)-11-2-thiatetradecenyl trifluoromethyl ketone resulted completely inactive. The results obtained inconjunction to the previously shown low toxicity to mice by related trifluoromethyl ketones providenew important data for the putative utilization of these chemicals as new pest control agents.Keywords: Pheromone antagonism; esterase inhibition; Ostrinia nubilalis; trifluoromethyl ketones;European corn borer; wind tunnel; field tests