Field evaluation of the bait toxicant chlorfluazuron in eliminating Coptotermes acinaciformis (Froggatt) (Isoptera: Rhinotermitidae)
Field evaluation of the bait toxicant chlorfluazuron in eliminating Coptotermes acinaciformis (Froggatt) (Isoptera: Rhinotermitidae)
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DOI：
10.1603/0022-0493-96.6.1828
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发表时间：
2003-12-01
影响因子：
2.2
通讯作者：
Fitzgerald, CJ
中科院分区：
文献类型：
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作者：
Peters, BC;Fitzgerald, CJ
在澳大利亚汤斯维尔附近的13个白蚁丘上进行的野外实验中，对Exterra白蚁拦截和诱饵系统(Ensystex，Fayetteville，NC)的两个方面进行了评估。首先，对含有0.05%wt：wt或0.25%wt：wt的醋酸酯纤维素粉剂(安魂灵，Ensystex，费耶特维尔，北卡罗来纳州费耶特维尔)进行了杀灭食木丘建筑地下白蚁Copoptermes acinacformis(Froggatt)菌落的效果测试。在实验中使用的10个土丘(两个处理中有五个土丘)的第一次检查中，补充了潮湿的诱饵基质。其次，在另外三个土丘上使用一次湿毒饵基质来测试白蚁的反应和0.25%wt：wt的杀虫剂的药效。虽然没有驱避的证据，但补充的诱饵几乎没有被移除。0.05%wt：wt杀灭5个菌落，0.25%wt：wt杀灭5个菌落：另一个菌落死气沉沉，消除在即。投饵后12wk左右首次怀疑菌落下降，约5wk后通过破坏性取样确认菌落消失。菌落清除可能发生在12周内。其中一个群体是异常的，没有屈服于毒物的影响。由于蚂蚁对诱饵系统的入侵，另一个群体没有被消灭。实验期间，各站点均有蚂蚁发生，主要为紫色虹膜线虫群和两面体线虫群。小白蚁属在种群消除后，在五个猕猴桃丘上发现了这种病毒。对小块土丘和插入土丘的木桩进行检查是监测群体健康的可靠方法。
Two aspects of the Exterra Termite Interception and Baiting System (Ensystex, Fayetteville, NC) were evaluated in a field experiment using 13 termite mounds near Townsville, Australia. First, a cellulose-acetate powder containing either 0.05% wt:wt or 0.25% wt:wt chlorfluazuron (Requiem, Ensystex, Fayetteville, NC) was tested for its efficacy in eliminating colonies of the xylophagous mound-building subterranean termite Coptotermes acinaciformis (Froggatt). The moist bait matrix was replenished during the first inspection of 10 mounds (five mounds by two treatments) used in the experiment. Second, a single application of the moist bait matrix was used on three additional mounds to test termite responses and the effectiveness of 0.25% wt:wt chlorfluazuron. Although there was no evidence of repellence, there was little removal of replenished bait. Five colonies were eliminated by 0.05% wt:wt chlorfluazuron and five colonies by 0.25% wt:wt chlorfluazuron: another colony was moribund, and elimination appeared imminent. Colony decline was first suspected some 12 wk after bait application, and colony elimination was confirmed, by destructive sampling, about 5 wk later. Colony elimination may have occurred within 12 wk. One colony was an anomaly and did not succumb to the effects of the toxicant. Another colony was not eliminated because of invasion of the baiting system by ants. Ants, principally Iridomyrmex purpureus (F. Smith) group and Papyrius nitidus (Mayr) group, occurred commonly in the stations during the experiment. Microcerotermes sp. was found in five of the C. acinaciformis mounds, after colony elimination. Inspections of small sections of mounds and wooden dowels inserted into mounds were reliable methods for monitoring colony health.