Amelotti Ivana, Catalá Silvia S, Gorla David E
Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja, Anillaco, La Rioja, Argentina.
Mem Inst Oswaldo Cruz. 2009 May;104(3):481-5. doi: 10.1590/s0074-02762009000300014.
This article reports the effects of a pour-on formulation of cypermethrin (6% active ingredient) applied to chickens exposed to Triatoma infestans, the main vector of Chagas disease in rural houses of the Gran Chaco Region of South America. This study was designed as a completely random experiment with three experimental groups and five replicates. Third instar nymphs were fed on chickens treated with 0, 1 and 2 cc of the formulation. Nymphs were allowed to feed on the chickens at different time intervals after the insecticide application. Third-instar nymphs fed on treated chickens showed a higher mortality, took less blood during feeding and had a lower moulting rate. The mortality rate was highest seven days after the insecticide solution application and blood intake was affected until 30 days after the application of the solution.
本文报道了将氯氰菊酯浇泼剂（活性成分6%）施用于感染克氏锥虫的鸡的效果，克氏锥虫是南美洲大查科地区农村房屋中恰加斯病的主要传播媒介。本研究设计为完全随机试验，有三个实验组和五个重复。用0、1和2毫升该制剂处理鸡，让三龄若虫以这些鸡为食。在施用杀虫剂后的不同时间间隔，让若虫以鸡为食。取食经处理鸡的三龄若虫死亡率更高，取食时摄取的血液更少，蜕皮率更低。在施用杀虫剂溶液七天后死亡率最高，且直到施用溶液30天后血液摄取仍受影响。
