In vitro activities of plant extracts from the Brazilian Cerrado and Pantanal against Rhipicephalus (Boophilus) microplus (Acari: Ixodidae).
A total of 73 ethanol extracts from different anatomical parts of 44 plant species belonging to 24 families, native to the Mid-Western region of Brazil, were assessed in vitro for their effect on the reproductive cycle of engorged females of the cattle tick Rhipicephalus (Boophilus) microplus, using the adult immersion test. All extracts were evaluated at the concentration of 0.2 % and, among the extracts tested, the one obtained from the fruits of Guarea kunthiana (Meliaceae) proved to be highly efficacious, showing 99.1 % of product effectiveness. Extracts from other three species were shown to be moderately active, namely Nymphaea amazonum trunk (Nymphaeaceae) [51.7 %], Strychnos pseudoquina trunk (Loganiaceae) [48 %] [corrected] and Ocotea lancifolia leaves (Lauraceae) [34.5 %], while the remaining extracts were shown to be weakly active or inactive. This is the first report on the bioactivity of these species on egg production by engorged females of R. microplus.
Laboratório de Parasitologia Animal, Universidade Estadual de Mato Grosso do Sul, Unidade de Aquidauana, Aquidauana, MS 79200-000, Brazil. csmangarosa@gmail.com
Carolina da Silva
Cda S
Barbosa
Ligia Miranda Ferreira
LM
Borges
José
J
Nicácio
Reginaldo Dias
RD
Alves
Carlos Henrique
CH
Miguita
Ivana Maria Póvoa
IM
Violante
Lidilhone
L
Hamerski
Walmir Silva
WS
Garcez
Fernanda Rodrigues
FR
Garcez
D056810:Acaricides / Q000633:toxicity*; D000818:Animals; D001938:Brazil; D002417:Cattle; D005260:Female; D019684:Magnoliopsida / Q000737:chemistry; D010936:Plant Extracts / Q000302:isolation & purification / Q000633:toxicity*; D012098:Reproduction / Q000187:drug effects; D048494:Rhipicephalus / Q000187:drug effects*; D013983:Tick Control
D056810:Acaricides; D010936:Plant Extracts