de Santana Breno Barros, Ramos Rafael Antonio Nascimento, Santana Marília de Andrade, Alves Leucio Cãmara, de Carvalho Gílcia Aparecida
Unidade Acadêmica de Garanhuns, Universidade Federal Rural de Pernambuco, Garanhuns, PE, Brazil.
Rev Bras Parasitol Vet. 2013 Apr-Jun;22(2):276-80. doi: 10.1590/S1984-29612013000200047.
The synthetic pyrethroids and their associations have been widely used for controlling Rhipicephalus (Boophilus) microplus. The frequent use of acaricides has been inducing the development of resistance in the tick populations. The aim of this study was to assess the susceptibility of R. (B.) microplus populations to pyrethroids and their associations in the region of Garanhuns, Pernambuco, Brazil. In addition, the level of information among farm owners regarding tick control measures was investigated. Ticks were collected directly from naturally infested dairy cattle in the region and were exposed to pyrethroids and their associations. At the same time, an epidemiological questionnaire was applied with the aim of investigating the level of information among the farmers. The results reported here indicate that R. (B.) microplus populations in the dairy region of Garanhuns show resistance to pyrethroids and their associations, except when the product is associated with piperonyl butoxide. Regarding the results from the epidemiological survey, it was seen that there is a considerable lack of information among the farmers in relation to ixodid control measures. The level of ticks resistance to acaricides varied widely across the region studied. No alternative control programs have been implemented among these farms, thus demonstrating that there is a need for more information relating to the biology and control of R. (B.) microplus.
合成拟除虫菊酯及其复配制剂已被广泛用于控制微小牛蜱。杀螨剂的频繁使用已导致蜱虫种群产生抗药性。本研究的目的是评估巴西伯南布哥州加兰胡斯地区微小牛蜱种群对拟除虫菊酯及其复配制剂的敏感性。此外，还调查了农场主关于蜱虫控制措施的信息水平。蜱虫直接从该地区自然感染的奶牛身上采集，并接触拟除虫菊酯及其复配制剂。与此同时，应用了一份流行病学调查问卷，旨在调查农民的信息水平。此处报告的结果表明，加兰胡斯奶牛养殖区的微小牛蜱种群对拟除虫菊酯及其复配制剂具有抗性，但该产品与胡椒基丁醚复配时除外。关于流行病学调查的结果，发现农民在蜱螨控制措施方面的信息相当匮乏。在所研究的区域内，蜱虫对杀螨剂的抗性水平差异很大。这些农场尚未实施替代控制方案，因此表明需要更多有关微小牛蜱生物学和控制的信息。
