Department of Entomology, University of Kentucky, 40546, Lexington, Kentucky.
J Chem Ecol. 1993 Mar;19(3):503-15. doi: 10.1007/BF00994321.
Prolonged preexposure (three days) of maleTrichoplusia ni to its six-component sex pheromone blend or its major pheromone component, (Z)-7-dodecenyl acetate, reduced subsequent upwind flight responses to a pheromone source. Preexposure to (Z)-7-dodecenol increased upwind flight responses to a pheromone source combined with (Z)-7-dodecenol. The impact of long-term preexposures was moderate when compared to the more immediate effects of background noise. When (Z)-7-dodecenyl acetate was presented as background noise, all maleT. ni failed to respond to a plume of the full pheromone blend. However, most moths succeeded in locking on to the pheromone plume and contacting the pheromone source in the presence of the five minor pheromone components as background noise. When (Z)-7-dodecenol was released as background noise the response rate to a pheromone source containing (Z)-7-dodecenol was increased dramatically. This indicates that males became adapted to (Z)-7-dodecenol while responding to the pheromone source. The results of this study indicate that both long-term preexposure treatments and immediate exposure to background noise can limit the ability of maleT. ni to respond to sex pheromone sources.
雄性斜纹夜蛾（Trichoplusia ni）在接触其六组分性信息素混合物或其主要信息素成分（Z）-7-十二烯乙酸酯三天后，对信息素源的顺风飞行反应会降低。与背景噪声的即时影响相比，预先接触（Z）-7-十二烯醇会增加对信息素源的顺风飞行反应。与背景噪声相比，长期预暴露的影响适中。当（Z）-7-十二烯乙酸酯作为背景噪声时，所有雄性斜纹夜蛾都无法对完整信息素混合物的羽流做出反应。然而，当五种次要信息素成分作为背景噪声存在时，大多数飞蛾成功地锁定在信息素羽流上，并接触到信息素源。当（Z）-7-十二烯醇作为背景噪声释放时，对含有（Z）-7-十二烯醇的信息素源的反应率显著增加。这表明雄性在对信息素源做出反应的同时，对（Z）-7-十二烯醇产生了适应性。这项研究的结果表明，长期预暴露处理和立即接触背景噪声都可以限制雄性斜纹夜蛾对性信息素源的反应能力。
