Beugnet F, Chardonnet L
Laboratoire de Parasitologie, Ecole Vétérinaire de Lyon, Marcy L'Etoile, France.
Vet Parasitol. 1995 Feb;56(4):325-38. doi: 10.1016/0304-4017(94)00686-7.
Boophilus microplus is the common cattle tick of great economic importance in New Caledonia. Since 1986, deltamethrin has been used for dipping. In 1992, an increase of tick infestations was seen on some ranches. Field and laboratory studies were conducted to determine if resistant ticks were present. Ticks resistant to deltamethrin were detected on three ranches, with resistance factors from 8.3 to 97.7. All deltamethrin-resistant isolates were also resistant to fenvalerate, but only one was also resistant to flumethrin. The combination of deltamethrin and ethion seemed to be active on isolates. This is the second description of isolates of Boophilus microplus resistant to pyrethroids, the first being in Australia and points to future problems in the management of tick control. Some organophosphates like chlorpyriphos or fenthion were studied as replacements for deltamethrin, in spite of the fact that most ticks are resistant to ethion. The authors propose a rotation strategy based on the alternation of several compounds together with a minimal frequency of dipping.
微小牛蜱是新喀里多尼亚具有重大经济意义的常见牛蜱。自1986年以来，溴氰菊酯一直用于药浴。1992年，一些牧场的蜱虫侵扰有所增加。开展了田野和实验室研究以确定是否存在抗性蜱虫。在三个牧场上检测到了对溴氰菊酯具有抗性的蜱虫，抗性因子在8.3至97.7之间。所有对溴氰菊酯具有抗性的分离株也对氰戊菊酯具有抗性，但只有一个对氟氯氰菊酯也具有抗性。溴氰菊酯和乙硫磷的组合似乎对分离株有活性。这是关于微小牛蜱对拟除虫菊酯具有抗性的分离株的第二篇报道，第一篇来自澳大利亚，这表明蜱虫控制管理未来会出现问题。尽管大多数蜱虫对乙硫磷具有抗性，但还是研究了一些有机磷酸酯类，如毒死蜱或倍硫磷，以替代溴氰菊酯。作者提出了一种基于几种化合物交替使用并尽量减少药浴频率的轮换策略。
