Laboratório de Parasitologia Veterinária, Universidade Federal de Goiás, Campus Samambaia (Campus II), CP 131 ZIP 74001-970, Goiânia, GO, Brazil.
Vet Parasitol. 2011 Feb 10;175(3-4):320-4. doi: 10.1016/j.vetpar.2010.10.012. Epub 2010 Oct 16.
The use of a concentrate emulsion of Melia azedarach green fruits and a suspension of the fungus Beauveria bassiana was evaluated in the control of Rhipicephalus microplus on artificially infested cattle. The evaluation was conducted following the protocol established by the Brazilian Agriculture Ministry. Five groups of 4 or 5 animals were allocated to one of the following treatments: emulsion concentrate of M. azedarach at 0.25% (T AZED 0.25%), emulsion concentrate of M. azedarach at 0.5% (T AZED 0.5%), B. bassiana at 2.4 × 10(8) conidia (T BASS), association of the concentrate of M. azedarach at 0.25% with B. bassiana at 2.4 × 10(8) conidia (T AZED 0.25%+BASS), and control (untreated). The association of the two compounds provided better results than any one isolated treatment, indicating compatibility or perhaps a synergy between M. azedarach and B. bassiana. This treatment resulted in fewer engorged females (129 ± 70) than in the control group (233 ± 82), showing high performance against all developmental stages of the tick. Results revealed an apparent synergistic effect of M. azedarach and B. bassiana in the control of R. microplus that should be further investigated.
本研究评估了苦楝果浓缩乳液和金龟子绿僵菌悬浮液对人工感染牛蜱的控制效果。评估遵循巴西农业部制定的方案进行。将 5 组 4 或 5 只动物分配到以下处理组之一：0.25%苦楝果浓缩乳液（T AZED 0.25%）、0.5%苦楝果浓缩乳液（T AZED 0.5%）、2.4×10(8)个分生孢子金龟子绿僵菌（T BASS）、0.25%苦楝果浓缩乳液与 2.4×10(8)个分生孢子金龟子绿僵菌的混合物（T AZED 0.25%+BASS）和对照组（未处理）。两种化合物的联合使用比任何一种单独处理的效果都要好，表明苦楝果和金龟子绿僵菌之间存在相容性或协同作用。与对照组（233±82）相比，该处理组的饱血雌蜱（129±70）数量更少，对蜱的所有发育阶段均具有良好的防治效果。结果表明，苦楝果和金龟子绿僵菌在控制 R. microplus 方面具有明显的协同作用，值得进一步研究。
