Department of Entomological Sciences, School of Public Health University of California at Berkeley, 94720, Berkeley, California.
J Chem Ecol. 1992 Dec;18(12):2305-29. doi: 10.1007/BF00984952.
Five doses of lanierone (2-hydroxy-4,4,6-trimethyl-2,5-cyclohexadien-1-one) were tested with one dose of enantiomerically pure [99.4% (4R)-(-)] ipsdienol (2-methyl-6-methylene-2,7-octadien-4-ol) for activity as an aggregation pheromone ofIps pini (Say) in California. The response ofI. pini to 1 mg/day ipsdienol + 20 μg/day lanierone was significantly greater than the response to ipsdienol alone, but the response pattern did not demonstrate a clear dose-response relationship. The response to the highest dose of lanierone (2 mg/day) was significantly lower than the response to ipsdienol alone. Ipsdienol attracted significantly moreI. pini than a male-infested log. Lanierone did not alter the percentage of maleI. pini responding to ipsdienol alone. Neither sex ofI. pini orDendroctonus brevicomis LeConte from California produced detectable amounts of lanierone, but myrcene-aerated maleD. brevicomis produced 97.8%-(4S)-(+)-ipsdienol. The black-bellied clerid,Enoclerus lecontei (Wolcott) (Coleoptera: Cleridae) was attracted to lanierone when released with ipsdienol. Neither compound was attractive when released alone, proving synergism for the kairomone of this predator. Lanierone did not influence the response of the predatorsTemnochila chlorodia (Mannerheim) (Coleoptera: Trogositidae) andEnoclerus sphegeus (F.) (Coleoptera: Cleridae), which were attracted to all treatments containing ipsdienol.Tomicobia tibialis Ashmead (Hymenoptera: Pteromalidae) responded in significantly greater numbers to the male-infested log than it did to ipsdienol or ipsdienol + 20 μg/day lanierone.
五种剂量的拉尼尔酮（2-羟基-4,4,6-三甲基-2,5-环己二烯-1-酮）与一份对映体纯的[99.4%（4R）-（-）]异派丹醇（2-甲基-6-亚甲基-2,7-辛二烯-4-醇）进行了测试，以评估其作为加利福尼亚州的白松齿小蠹（Ips pini （Say））的聚集信息素的活性。与单独使用异派丹醇相比，I. pini 对每天 1 毫克异派丹醇+每天 20 微克拉尼尔酮的反应明显更大，但反应模式没有表现出明显的剂量反应关系。最高剂量（每天 2 毫克）的拉尼尔酮的反应明显低于单独使用异派丹醇的反应。异派丹醇比雄性虫蛀原木吸引了更多的 I. pini。拉尼尔酮并没有改变雄性 I. pini 对单独使用异派丹醇的反应比例。来自加利福尼亚州的 I. pini 和 Dendroctonus brevicomis LeConte 的雌雄两性都没有产生可检测量的拉尼尔酮，但被充气的雄性 D. brevicomis 产生了 97.8%-(4S)-(+)-异派丹醇。黑腹拟步甲属的 Enoclerus lecontei （Wolcott）（鞘翅目：拟步甲科）在与异派丹醇一起释放时被拉尼尔酮吸引。当单独释放时，这两种化合物都没有吸引力，证明了这种捕食者的信息素具有协同作用。拉尼尔酮没有影响捕食者 Temnochila chlorodia （Mannerheim）（鞘翅目：小蠹科）和 Enoclerus sphegeus （F.）（鞘翅目：拟步甲科）的反应，它们被所有含有异派丹醇的处理所吸引。Tomicobia tibialis Ashmead（膜翅目：小蜂科）对雄性虫蛀原木的反应明显多于对异派丹醇或异派丹醇+每天 20 微克拉尼尔酮的反应。
