Consulta: subjectFacets:"Tick control"
Registros recuperados: 6
Data/hora: 10/06/2024 17:06:06

Toxicity of extract of Magonia pubescens (Sapindales: Sapindaceae) St. Hil. to Control the Brown Dog tick, Rhipicephalus sanguineus (Latreille) (Acari: Ixodidae)
Provedor de dados: Neotropical Entomology
Autores: Fernandes,Fernando F.; D’alessandro,Walmirton B.; Freitas,Edméia P.S.
The action of crude ethanol extract of the stem bark of the soapberry Magonia pubescens St. Hil. was studied upon larvae of the Brown Dog tick Rhipicephalus sanguineus (Latreille). Tick larvae were obtained by maintaining gravid females in an incubator, after collecting them from naturally infested kennels. The tick larvae were placed in envelopes of filter paper impregnated with different concentrations of the extract dissolved in dimethylsulfoxide (DMSO) and distilled water. Four tests were repeated with each solution (n &gt; 120). The control was carried out in DMSO and distilled water. The bioassays were performed at 27±1°C, RH &gt; 80% and 12:12 light cycle. Mortality was observed after 48h exposure. All motionless larvae were considered to be dead....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botanical acaricide; Soapberry; Tingui; Tick control.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000200016

Esterase profile in the postembryonic development of Rhipicephalusmicroplus
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Baffi,Milla Alves; Pereira,Cícero Donizete; Souza,Guilherme Rocha Lino de; Ceron,Carlos Roberto; Bonetti,Ana Maria.
The objective of this work was to analyze the pattern of esterase activity in the development stages of Rhipicephalus microplus by nondenaturing polyacrylamide gel electrophoresis using specific staining for esterase. The electrophoretical results revealed the presence of nine regions displaying esterase activity, stained with both alpha-naphthyl acetate and beta-naphthyl acetate, and classified as alpha-beta-esterase. Stage-specific esterases were found, with the first nymphal and larval stages showing the greatest esterase activity throughout the development. An esterase called EST-4 was detected only in males and was considered sex-specific. There are differences in the esterase profile among the different postembryonic development stages of R. microplus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle tick; Resistance to acaricides; Tick control.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000800016

Larvicidal potential of Sapindus saponaria to control the cattle tick Boophilus microplus
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Fernandes,Fernando de Freitas; Freitas,Edméia de Paula e Souza; Costa,Anna Carolina da; Silva,Ionizete Garcia da.
The objective of this study was to evaluate the larvicidal potential of a crude ethanol extract (CEE) of soapberry Sapindus saponaria stem peel on the cattle tick Boophilus microplus. Tick larvae obtained by incubating engorged females, collected from naturally infested cattle, were placed in envelopes of filter paper impregnated with different concentrations of CEE in the test group, and distilled water in the control group. Four repetitions were made with each solution (n&gt;120). Mortality was observed after 48 hours. Lethal concentration values of 1,258 ppm (LC50) and 6,360 ppm (LC99) were obtained.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Sapindaceae; Ixodidae; Botanical acaricide; Soapberry; Tick control.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001200013

Toxicological effects and resistance to pyrethroids in Boophilus microplus from Goiás, Brazil
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Fernandes,F.F.
In order to monitor the susceptibility of Boophilus microplus to acaricides and improve control measures, the effects of cypermethrin, deltamethrin and permethrin on larvae obtained in the city of Goiânia in the Brazilian state of Goiás were studied. Although these pyrethroids are already sold as acaricides, their cost-benefit efficiency has been questioned. Fasting 14-21 day-old larvae were immersed in solutions of the acaricides under test, maintained at 27±1° C, and relative humidity over 80%, and observed under the stereoscope within an apparatus originally designed for studying the non-parasitic phase of the tick life cycle. The observed toxicological effects were: excitability, repetitive motion, decreased motor ability, detachment, paralysis,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ixodidae; Boophilus microplus; Tick control; Pyrethroid; Acaricide resistance.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352001000500004

Larvicidal potencial of Sapindus saponaria (Sapindaceae) against Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae)
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Fernandes,F.F.; Leles,R.N.; Silva,I.G.; Freitas,E.P.S.
The larvicidal potential of the crude ethanolic extracts (CEE) of the stem peel of Sapindus saponaria was evaluated against Rhipicephalus sanguineus. Lethal concentrations (LC), were calculated by preparing CEE solutions at different concentrations in distilled water. Larvae fasted for 14-21 days were utilized in the bioassays, after incubation of engorged females collected from infested environments frequented by dogs in several neighborhoods of Goiânia, GO. Bioassays were performed in a specially constructed biological chamber for testing botanical acaricides, acclimatized to 27±1ºC, RH&gt;80%. The larvae were counted on filter paper envelopes impregnated with the solutions or distilled water and larval mortality observed after 48h. S. saponaria showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tick control; Rhipicephalus sanguineus; Sapindus saponaria; Soapberry; Botanical acaricide.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000100024

Acaricidal activity of leaves of Morus nigra against the cattle tick Rhipicephalus microplus
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Dantas,A.C.S.; Freire,D.P.; Souza,G.R.; Almeida,J.R.G.S.; Rolim,L.A.; Castro,R.N.; Horta,M.C.
ABSTRACT The acaricidal activity of crude ethanolic extract and fractions from the leaves of Morus nigra (Moraceae) was carried out on female cattle ticks Rhipicephalus microplus, using the adult immersion test. The mortality and fertility of females exposed to different concentrations of hexane, chloroform and ethyl acetate fractions, as well as ethanolic extract of M. nigra with concentrations of 5, 10 and 25mg/ml were evaluated using three treatment groups, two control groups and triplicate tests. The study also identified the main phenolic compounds of the extract and fractions of this species by HPLC. The chloroform fraction of leaves of M. nigra (25mg/mL) showed the best results for this species, obtaining 62.6% of inhibition of oviposition, 39.3% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tick control; Acaricide; Plant extract; Mulberry; HPLC.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300523