Susceptibility of Amblyomma variegatum ticks to acaricides in Ghana

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dc.contributor.author Natala, A.J.
dc.contributor.author Agyei, A.D.
dc.contributor.author Awumbila, B.
dc.date.accessioned 2019-03-21T08:49:05Z
dc.date.available 2019-03-21T08:49:05Z
dc.date.issued 2005-03
dc.identifier.citation Natala, A.J., Agyei, A.D. & Awumbíla, B. Exp Appl Acarol (2005) 35: 259. https://doi.org/10.1007/s10493-004-2206-y en_US
dc.identifier.other Volume 35, Issue 3, pp 259–268
dc.identifier.other https://doi.org/10.1007/s10493-004-2206-y
dc.identifier.uri http://ugspace.ug.edu.gh/handle/123456789/28751
dc.description.abstract The susceptibility of unfed and fed stages of larvae, nymphs and adult females of Amblyomma variegatum ticks were tested using Shaw's filter paper dip method against four acaricides; chlorfenvinphos and dioxathion, chlorfenvinphos, gamma benzene hexachloride and amitraz at four different concentrations including the recommended dose rates. Based on their lethal concentrations (LC50 & LC90) chlorfenvinphos and dioxathion combined and chlorfenvinphos alone placed first and second, respectively, in all stages except at the unfed nymphal stage where gamma benzene hexachloride topped with a LC50 of 0.001629, while chlorfenvinphos and dioxathion combined and chlorfenvinphos alone had LC50 of 0.001794 and 0.002258, respectively. Amitraz appeared to have a quick knock-down effect on larvae and nymphs but at the recommended dose rate, showed no mortality of the ticks at that stage. However, at a concentration of 0.040%, amitraz showed a 100% inhibition of oviposition and hatching of laid eggs. Gamma benzene hexachloride produced only 66% inhibition of oviposition while chlorfenvinphos and dioxathion combined and chlorfenvinphos alone produced 100% inhibition of oviposition at their recommended dose rates. Fed nymphs were more susceptible than the unfed nymphs. Eggs laid by engorged female ovipositing ticks, applied with gamma benzene hexachloride, hatched. © Springer 2005. en_US
dc.language.iso en en_US
dc.publisher Experimental and Applied Acarology en_US
dc.subject Acaricides en_US
dc.subject Amblyomma variegatum en_US
dc.subject Control en_US
dc.subject Efficacy en_US
dc.subject Ghana en_US
dc.subject Susceptibility en_US
dc.subject Ticks en_US
dc.title Susceptibility of Amblyomma variegatum ticks to acaricides in Ghana en_US
dc.type Article en_US


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