Effect of temperature on noviflumuron performance against the eastern subterranean termite (Isoptera: Rhinotermitidae)
Effect of temperature on noviflumuron performance against the eastern subterranean termite (Isoptera: Rhinotermitidae)
复制标题
温度对新氟脲对东部地下白蚁（等翅目：鼻白蚁科）性能的影响
作者：
N. Spomer;S. Kamble
测定了温度对氟虫隆（0.5%，活性成分[AI]）饵料消耗及对东部地下白蚁（Kollar）死亡率的影响。还检查了由接受治疗的黄斑豚鼠向未接受治疗的黄斑豚鼠转移的诺非氟脲引起的死亡率。无选择的喂食站装有洗净的沙、一个装有未经处理的饵料基质或0.5%诺威氟隆饵料基质的饵料管，以及100只黄尾鼠幼虫。实验温度分别为15°、19°、23°和27°C，监测间隔为2、4、6和8周。在每个监测间隔，对饲喂站进行破坏性采样。数据表明，在2周和4周的采样间隔内，黄仓鼠对0.5%诺威氟隆饵料基质无取食威慑作用。与温度≥19°C相比，15°C条件下6周白蚁死亡率较低。温度低于19°C时，在相同的采样间隔内白蚁死亡率显著降低。使用生物测定技术确定0.5%诺非氟脲从处理过的白蚁转移到未处理过的白蚁并由此产生的死亡率。喂食站保持在25°C。一组白蚁（蓝色=“B”）以0.05%尼罗蓝A染色的0.5%诺威氟隆处理饵料基质为食3天。第二组白蚁（白色=“W”）被饥饿了24小时。分别以1B:1W、1B:10W、1B:20W的比例组合处理白蚁和未处理白蚁。破坏性取样每隔4周和8周进行一次。据资料显示，5%的黄仓鼠觅食种群以0.5%的诺威氟隆饵料基质为食，有可能造成可观的种群影响。
The effect of temperature on noviflumuron (0.5%, Active Ingredient [AI]) bait consumption and resulting mortality of the Eastern subterranean termite, Reticulitennes flavipes (Kollar) were determined. Mortality resulting from the transfer of noviflumuron from treated to untreated R. flavipes was also examined. No-choice feeding stations contained washed sand, a bait tube with either an untreated bait matrix or a 0.5% noviflumuron bait matrix, and 100 R. flavipes workers. Experiments were conducted at 15°, 19°, 23°, and 27°C and at monitoring intervals of 2, 4, 6, and 8 wk. At each monitoring interval, feeding stations were destructively sampled. Data indicated that R. flavipes had no feeding deterrence to 0.5% noviflumuron bait matrix at the 2 and 4 wk sampling intervals. Termite mortality was lower at 15°C compared to temperatures ≥ 19°C at 6 wk. Temperatures lower than 19°C resulted in significantly lower termite mortality rates within the same sampling intervals. Transfer of 0.5% noviflumuron from treated to untreated termites and resulting mortality was determined using a bioassay technique. Feeding stations were held at 25°C. One group of termites (Blue="B") was allowed to feed on 0.5% noviflumuron treated bait matrix stained with 0.05% Nile-Blue A for 3 days. A second group of termites (White="W") was starved for 24 hr. Treated and untreated termites were combined at ratios of 1B:1W, 1B:10W, 1B:20W. Destructive sampling occurred at 4 and 8 wk intervals. According to data a 5% foraging population of R. flavipes feeding on 0.5% noviflumuron bait matrix has the potential to cause a substantial population impact.