Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 94701, Berkeley, California.
J Chem Ecol. 1985 Sep;11(9):1249-61. doi: 10.1007/BF01024113.
After living ponderosa pines were baited with either female-infested bolts or synthetic pheromones,Dendroctonus brevicomis were caught on sticky screens throughout trapping periods of 15-46 days; however, large numbers of beetles were trapped during only a small portion (5-10 days) of these trapping periods. The most attractive portions of trees attacked contained 3-6 beetles dm(2), in galleries ca. 2 cm long. Catch increased following addition of males to female-infested bolts, supporting the hypothesis that male-produced frontalin is an attractive pheromone of the western pine beetle. Catch at bolts removed from trees under attack was strongly dependent upon levels of boring activity. We found no evidence of interruption of the response to attractants during host colonization.
在投放有受雌虫侵害的原木或人工合成信息素的活的白松之后，花栎象在 15-46 天的诱捕期内会被粘性虫屏诱捕到；然而，只有在诱捕期的一小部分（5-10 天）内会诱捕到大量的象甲。在受侵害的树木的最有吸引力的部分，包含 3-6 只体长约 2 厘米、在隧道中约 3 厘米长的甲虫。在受雌虫侵害的原木中添加雄性后，诱捕量增加，支持了雄性产生的法尼烯是西部松象甲的一种有吸引力的信息素的假说。从受侵害的树上取下的原木的诱捕量强烈依赖于钻孔活动的水平。我们没有发现宿主定殖过程中对引诱剂的反应中断的证据。
