02044naa a2200397 a 450000100080000000500110000800800410001902400390006010000240009924501760012326000090029952008660030865000150117465000150118965000100120465000140121465000270122865000230125565000180127865000200129665300130131665300220132965300200135165300150137165300090138670000250139570000160142070000180143670000200145470000220147470000190149670000230151570000220153870000160156077300700157621082752019-10-17 2019 bl uuuu u00u1 u #d7 a10.1080/10412905.2019.15802252DOI1 aCASTRO, K. N. de C. aAcaricidal activity of cashew nut shell liquid associated with essential oils from Cordia verbenacea and Psidium guajava on Rhipicephalus microplus.h[electronic resource] c2019 aThe aim of this study was to assess the effectiveness of cashew nut shell liquid (CNSL), Cordia verbenacea and Psidium guajava, both alone and in association against Rhipicephalus microplus. Larval packet and adult immersion tests were conducted in concentrations ranging from 3.1 at 100.0mg mL?1. CNSL was effective against engorged females (99.6%) at 100.0mg mL?1 and against larvae (99.2 %) at 50.0mg mL?1. The highest efficacy on engorged females was achieved by the essential oils of P. guajava at 12.5mg mL?1 (99.9%), followed by those of C. verbenacea at 25.0mg mL?1 (96.9%), while a low larvicidal activity of 5.8 and 59.0% was, respectively, obtained. The association at 50.0mg mL?1 had asignificant effect on both life stages of R. microplus. This association caused considerable larval mortality (95.3%) and high efficacy on engorged females (93.9%). aAcaricides aAnacardium aTicks aAcaricida aAnacardium Occidentale aCordia Verbenaceae aÓleo Vegetal aPsidium Guajava aCarraça aCordia verbenacea aÓleos vegetais aPlant oils aTick1 aCOSTA-JÚNIOR, L. M.1 aLIMA, D. F.1 aCANUTO, K. M.1 aBRITO, E. S. de1 aANDRADE, I. M. de1 aTEODORO, M. S.1 aOIRAM-FILHO, F. O.1 aSANTOS, R. C. dos1 aMAYO, S. J. tJournal of Essential oil Researchgv. 31, n. 4, p. 297-304, 2019.