Activity of essential oil of Lippia triplinervis Gardner (Verbenaceae) on Rhipicephalus microplus (Acari: Ixodidae)

Show simple item record Lage, Tiago Coelho de Assis Montanari, Ricardo Marques Fernandes, Sergio Antonio Monteiro, Caio Márcio de Oliveira Senra, Tatiane de Oliveira Souza Zeringota, Viviane Calmon, Fernanda Matos, Renata da Silva Daemon, Erik 2019-02-18T13:33:04Z 2019-02-18T13:33:04Z 2013-02
dc.identifier.issn 1432-1955
dc.description.abstract The objective of this work was to characterize and investigate the acaricidal activity of the essential oil of the aerial parts of Lippia triplinervis at different concentrations on unengorged larvae and engorged females of Rhipicephalus microplus. The essential oil yielded 2.21 % (w/w to dry matter) and was composed mainly of carvacrol (31.9 %), thymol (30.6 %), and p-cymene (12.3 %). Two tests were performed to assess the acaricidal activity: the modified larval packet test, with concentrations of 2.5, 5.0, 10.0, 15.0, and 20.0 mg/mL and the female immersion test, with concentrations of 10.0, 20.0, 30.0, 40.0, and 50.0 mg/mL. There were ten repetitions for each concentration, and for each test, a control group was formed in which the ticks were treated with Tween 80 (20 mg/mL). The experimental groups were kept in a climate-controlled chamber (27 ± 1 °C and RH >80 %). The mortality of the larvae was above 95 % in all the groups tested and reached 100 % as of the 5.0 mg/mL concentration, while the control group exhibited 0 % mortality. In the female immersion test, there was a significant decline (p < 0.05) in the egg mass weight, egg production index, and hatching percentage starting at the concentration of 30.0, 40.0, and 20.0 mg/mL, respectively, and the control percentage at the concentrations of 40.0 and 50.0 mg/mL were above 90 and 95 %. The L. triplinervis oil as thus an alternative source of the monoterpenes thymol, carvacrol, and p-cymene, and its toxicity on R. microplus larvae and females makes it promising possibility for control of this tick. en
dc.format pdf pt-BR
dc.language.iso eng pt-BR
dc.publisher Parasitology Research pt-BR
dc.relation.ispartofseries Volume 112, Issue 2, Pages 863– 869, February 2013 pt-BR
dc.rights Springer-Verlag Berlin Heidelberg 2012 pt-BR
dc.subject Thymol pt-BR
dc.subject Carvacrol pt-BR
dc.subject Amitraz pt-BR
dc.subject Macrocyclic Lactone pt-BR
dc.subject Engorge female pt-BR
dc.title Activity of essential oil of Lippia triplinervis Gardner (Verbenaceae) on Rhipicephalus microplus (Acari: Ixodidae) en
dc.type Artigo pt-BR

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    Artigos Técnico-científicos na área de Química

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