Field trapping of diamondback mothPlutella xylostella using an improved four-component sex attractant blend

Abstract

In addition to three known sex lure components [(Z)-11-hexadecenyl acetate, (Z)-11-hexadecenal, and (Z)-11-hexadecenol], (Z)-9-tetradecenyl acetate was field-proven as a trace coattractant for malePlutella xylostella, with an optimal content below 0.01% in blends. This potent four-component lure for diamondback males also attractedCrymodes devastator males, and in this respect is not different in its attractancy from virgin diamondback females. Replacement of (Z)-9-tetradecenyl acetate in the four component lure with (Z)-9-tetradecen-1-ol, at the level of 10% of the total lure mixture, did not alter its attractancy for diamondback males, but it did inhibit attraction ofCrymodes devastator. The status of biologically active components as possible sex pheromones or para-pheromones is discussed.

RNA interference of pheromone biosynthesis-activating neuropeptide receptor suppresses mating behavior by inhibiting sex pheromone production in Plutella xylostella (L.)

“…Mating of P. xylostella is mostly observed during 2 h post-scotophase . Sex pheromone of P. xylostella mediating the mating behavior was identified as a mixture of major components ((Z)-11-hexadecenal (Z11-16:Al) and (Z)-11-hexadecenyl acetate (Z11-16:Ac)) and minor components ((Z)-11-hexadecen-1-ol (Z11-16:OH), (Z)-9-tetradecenyl acetate (Z9-14:Ac), and (Z)-11-hexadecenyl acetate (Z11-16:Ac)) (Tamaki et al, 1977;Koshihara and Yamada, 1980;Chrisholm et al, 1983). A sex pheromone receptor gene of P. xylostella has been identified and exhibits specific expression in male antennae with specific responsiveness to a major component (Mitsuno et al, 2008).…”

Changes of Sex Pheromone Communication Systems Associated with Tebufenozide and Abamectin Resistance in Diamondback Moth, Plutella xylostella (L.)

“…Considering the importance of insect sex pheromone communication systems in reproductive isolation, studies of changes between pesticide resistant and susceptible insects should provide insight into the process of speciation. In addition, sex pheromones, as selective and environmentally friendly pest means of control, have been used successfully to control some important insect pests including diamondback moth (DBM), Plutella xylostella (L.) by trapping-and-killing or mating disruption (Chisholm et al 1983;Schroeder et al 2000). If there are changes in an insect sex pheromone communication system associated with insecticide resistance, sex pheromone formulations may require modification for the best control efficiency, and strategies for insecticide resistance management based on gene dilution between susceptible and resistant individuals also may require a re-evaluation.…”

Trap effect on the capture of Plutella xylostella (Lepidoptera: Plutellidae) with sex pheromone lures in cabbage fields in Vietnam

“…Mixtures of Z11-16: Ald and Z11-16: Ac in the range of 8 : 2 to 4 : 6 had been found to be attractive to males in the field (Koshihara et al, 1978;Ando et al, 1979;Chisholm et al, 1979). The pheromone activity of the two components was improved by adding 1% of (Z)-11-hexadecenol (Z11-16: OH) (Koshihara and Yamada, 1980), and further enhanced by adding 0.01% of (Z)-11-tetradecenyl acetate (Chisholm et al, 1983;Deng and Du, 2002). DBM synthetic sex pheromone has been tested efficiently for monitoring (Baker et al, 1982;Shirai and Nakamura, 1995;Ronald, 1997;Reddy and Guerrero, 2001), mass trapping (Chisholm et al, 1979;Reddy and Urs, 1997;Reddy and Guerrero, 2000) and mating disruption (Fujiyoshi et al, 1979;Mclaughlin et al, 1994).…”

“…In different field tests the amount of pheromone blend used per septum has varied from 10 to 100 mg (Koshihara and Yamada, 1980;Chisholm et al, 1983;Chen et al, 1990). The dose of sex pheromone (50 mg, Chinese, or 106 mg, Japanese) did not affect the captures in our experiments.…”