用拟黑多刺蚁（等翅目：木白蚁科）评价楝科和芸香科柠檬苦素作为白蚁拒食剂。

Meliaceae and rutaceae limonoids as termite antifeedants evaluated usingReticulitermes speratus kolbe (Isoptera: Rhinotermitidae).

机构信息

Central Research Laboratories, Taiyo Kagaku Co. Ltd., 1-3 Takaramachi, Yokkaichi, 510, Mie, Japan.

出版信息

J Chem Ecol. 1992 Apr;18(4):593-603. doi: 10.1007/BF00987822.

Abstract

Four limonoids were evaluated by a no-choice bioassay method as termite antifeedants usingReticulitermes speratus Kolbe. Obacunone showed the highest degree of antifeeding potency (PC95=1133 ppm w/w), followed by nomilin (PC95=4475 ppm), azadirachtin (PC95=65,293 ppm), and limonin (with PC(95) estimates beyond the bioassay limits), which was the least potent. None of the four limonoids exhibited any evidence of acute toxicity towardsR. speratus, although termites fed on obacunone and nomilin at concentrations higher than their PC95 estimates tend to die faster than those in the unfed treatment. Obacunone and nomilin also showed a drastic antifeedant consumption (AC) reduction effect at concentrations higher than 510 and 1360 ppm, respectively. With azadirachtin and limonin, such an effect was not observed. The present data suggest that both obacunone and nomilin have an absolute antifeeding activity towardsR. speratus.

摘要

四种柠檬苦素采用拒食生物测定法，以黑胸散白蚁（Reticulitermes speratus Kolbe）为试虫进行评价，结果显示：obacunone 的拒食活性最高（PC95=1133 ppm w/w），其次为 nomilin（PC95=4475 ppm）、azadirachtin（PC95=65,293 ppm）和 limonin（PC95 估计超出了生物测定范围），活性最低。这 4 种柠檬苦素对黑胸散白蚁均无急性毒性，尽管白蚁在高于其 PC95 估计浓度下取食 obacunone 和 nomilin 后死亡速度快于未喂食处理，但 obacunone 和 nomilin 还分别在高于 510 和 1360 ppm 的浓度下显示出强烈的拒食作用（AC）降低效果，而 azadirachtin 和 limonin 则没有观察到这种效果。本数据表明，obacunone 和 nomilin 对黑胸散白蚁均具有绝对的拒食活性。