Antagonism of pheromone response of Ostrinia nubilalis males and implications on behavior in the laboratory and in the field
| Autor: | Angel Guerrero, Lourdes Muñoz, Magi Riba, Gloria Rosell, Joan Solé, M. Pilar Bosch, Albert Sans |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Male
European corn borer Insecticides Pheromone antagonism Ketone Stereochemistry Ostrinia nubilalis Moths Field tests Esterase Pheromones Trifluoromethyl ketones Ostrinia chemistry.chemical_compound Botany Animals Enzyme Inhibitors chemistry.chemical_classification Trifluoromethyl biology Behavior Animal Esterases General Chemistry Ketones biology.organism_classification Esterase inhibition chemistry Pheromone General Agricultural and Biological Sciences Esterase inhibitor Antagonism Wind tunnel |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 8 pages, 3 figures, 2 tables.-- PMID: 15713034 [PubMed].-- Printed version published Feb 23, 2005. 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 trifluoromethyl ketone (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 source baited 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 the pheromone in a 10:1 ratio in comparison with the natural attractant. The compound was also a good inhibitor of the antennal esterase of the insect with a IC50 value of 0.28 μM. The homologous (Z)-10-tridecenyl trifluoromethyl ketone, with one carbon less in the chain, also elicited an antagonistic effect in the wind tunnel, but in the field, the results were not conclusive. The effect induced was lower than the one displayed by Z11-14:TFMK including the activity as the esterase inhibitor (IC50 value of 7.55 μM). The saturated tetradecyl trifluoromethyl ketone, tetradecyltrifluoropyruvamide, and (Z)-11-2-thiatetradecenyl trifluoromethyl ketone resulted completely inactive. The results obtained in conjunction to the previously shown low toxicity to mice by related trifluoromethyl ketones provide new important data for the putative utilization of these chemicals as new pest control agents. We are also indebted to CICYT (AGL2003-06599-C02-01, PTR1995-0656-OP, and AGL2003- 06599-C02-02) and Generalitat de Catalunya (2001SGR-00342) for financial support. |
| Databáze: | OpenAIRE |
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