Assessment of commercially available pheromone lures for monitoring diamondback moth (Lepidoptera: Plutellidae) in canola.
Sex pheromone monitoring lures from five different commercial sources were compared for their attractiveness to male diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae) in canola, Brassica napus L., fields in western Canada. Lures that had the highest pheromone release rate, as determined by aeration analyses in the laboratory, were the least attractive in field tests. Lures from all the commercial sources tested released more (Z)-11-hexadecenal than (Z)-11-hexadecenyl acetate and the most attractive lures released a significantly higher aldehyde to acetate ratio than less attractive lures. Traps baited with sex pheromone lures from APTIV Inc. (Portland, OR) and ConTech Enterprises Inc. (Delta, BC, Canada) consistently captured more male diamondback moths than traps baited with lures from the other sources tested. In two different lure longevity field trapping experiments, older lures were more attractive to male diamondback moths than fresh lures. Pheromone release from aged lures was constant at very low release rates. The most attractive commercially available sex pheromone lures tested attracted fewer diamondback moth males than calling virgin female moths suggesting that research on the development of a more attractive synthetic sex pheromone lure is warranted.
Evenden
M L
ML
Department of Biological Sciences, CW405 Biological Sciences Building, University of Alberta, Edmonton, AB T6G 2E9, Canada. mevenden@ualberta.ca
Gries
R
R
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D029741:Brassica rapa; D005260:Female; D007300:Insect Control; D008297:Male; D009036:Moths / Q000187:drug effects*; D012724:Sex Attractants / Q000494:pharmacology*
D012724:Sex Attractants