Repellent activity of plant-derived compounds against Amblyomma cajennense (Acari: Ixodidae) nymphs
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- 作者：Sara Fern ; es Soares ; Lí ; gia Mir ; a Ferreira Borges ; Raquel de Sousa Braga ; Lorena Lopes Ferreira ; Carla Cristina Braz Louly ; Leonice Manrique Faustino Tresvenzol ; José ; Realino de Paula ; Pedro
- 关键词：Repellence ; Citronella ; Hyptis suaveolens ; C. ambrosioides ; Callicarpenal ; Intermedeol
- 刊名：Veterinary Parasitology
- 出版年：2010
- 出版时间：20 January 2010
- 年：2010
- 卷：167
- 期：1
- 页码：67-73
- 全文大小：374 K
文摘
Repellence responses of Amblyomma cajennense nymphs to callicarpenal, intermedeol, Hyptis suaveolens essential oil, extract of Melia azedarach, Cymbopogon nardus, Spiranthera odoratissima, Chenopodium ambrosioides, Ageratum conyzoides, Mentha pulegium, Ruta graveolens, and Memora nodosa were studied. Among these the extract of C. nardus stood out because of the long-lasting repellence, maintaining, in the highest concentration, 35 h of protection against 90 % of the nymphs. The essential oil of H. suaveolens and the extracts of C. ambrosioides and A. conyzoides showed good repellence index (66 % ) when applied in high concentrations. However, greater protection could be obtained at higher concentrations but with a shorter repellence time. Callicarpenal, intermedeol, extract of M. Pulegium, and M. nodosa leaves showed moderate repellence in high concentrations. Extracts from M. azedarach, R. graveolens, S. odoratissima, and M. nodosa roots showed little or no repellent effect. These results show that some plant extracts may represent a promising alternative in the control of infestations by A. cajennense.