Disruption of responses to pheromone by (Z)-11-hexadecenyl trifluoromethyl ketone, an analogue of the pheromone, in the cabbage armyworm Mamestra brassicae.
The effects of (Z)-11-hexadecenyl trifluoromethyl ketone (Z11-16:TFMK) a fluorinated pheromone analogue, on the responses to sex pheromone of the male cabbage armyworm, Mamestra brassicae, have been investigated in an actograph and by electroantennography (EAG). In spite of its structural proximity with the natural pheromone, Z11-16:TFMK was poorly active in EAG, and not active on male behaviour. When permeated in the air, Z11-16:TFMK reversibly inhibited the electroantennographic responses to (Z)-11-hexadecenyl acetate (Z11-16:Ac), the main component of the sex pheromone. In the actograph, the latency of the activation was increased and the intensity of the behavioural activity of males in response to Z11-16:Ac was significantly reduced in the presence of Z11-16:TFMK. These results, along with others previously reported by us, provide new pointers to the possible use of Z11-16:TFMK in pest-control strategies.
INRA UR258, Phytopharmacie et Médiateurs Chimiques, Route de Saint Cyr, 78026 Versailles, France. renou@versailles.inra.fr
Michel
M
Renou
Andrée
A
Berthier
Angel
A
Guerrero
D000818:Animals; D007300:Insect Control; D007659:Ketones / Q000737:chemistry / Q000494:pharmacology*; D007915:Lepidoptera / Q000187:drug effects*; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D012724:Sex Attractants / Q000737:chemistry / Q000494:pharmacology*
C480312:11-hexadecenyl trifluoromethyl ketone; D007659:Ketones; D012724:Sex Attractants