SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

BRAGA, A. G. S.; SOUZA, K. F. A. de; BARBIERI, F. da S.; FERNANDES, C. de F.; ROCHA, R. B.; VIEIRA JUNIOR, J. R.; LACERDA, C. L.; CELESTINO, C. O.; FACUNDO, V. A.; BRITO, L. G..

Estratégias de controle do carrapato dos bovinos, Rhipicephalus microplus, fundamentam-se na utilização de pesticidas. Os principais grupos químicos utilizados atualmente mostram-se ineficazes devido ao surgimento de populações resistentes. A pesquisa de novas moléculas com eficiência acaricida é uma necessidade para manutenção da produtividade dos rebanhos bovinos estabelecidos em regiões de clima tropical. Avaliamos a atividade de Piper tuberculatum para o controle de fêmeas ingurgitadas e larvas de R. microplus através de bioensaios de imersão de adultos e de pacotes de larvas. As concentrações avaliadas foram de 50; 25; 12,50; 6,25; 3,12 e 1,56 mg mL-1 de extrato etanólico de folha, talo e fruto de P. tuberculatum. As concentrações letais para 50% dos...

Acaricidal activity of extracts from different structures of Piper tuberculatum against larvae and adults of Rhipicephalus microplus

Palavras-chave: Carrapato dos bovinos; Bioensaios; Biomoléculas ativas; Active molecules; Bioassay; Cattle tick; Piperaceae.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088637

Acta Amazonica

BRAGA,Andrina Guimarães Silva; SOUZA,Krishna Ferri Alencar de; BARBIERI,Fabio da Silva; FERNANDES,Cleberson de Freitas; ROCHA,Rodrigo Barros; VIEIRA JUNIOR,José Roberto; LACERDA,Clariana Lins; CELESTINO,Caroline Oliveira; FACUNDO,Valdir Alves; BRITO,Luciana Gatto.

ABSTRACT The strategies to control the cattle tick, Rhipicephalus microplus are based mainly on the use of synthetic pesticides. However, the emergence, establishment, and development of resistance of ticks is rendering the main chemical groups ineffective. Finding new molecules to effectively control infestations by R. microplus is necessary to maintain the productivity of cattle herds, particularly of taurine breeds established in equatorial and tropical regions of the world. Ethanol extracts from the leaves, stems, and fruits of Piper tuberculatum were evaluated in bioassays at concentrations of 50, 25, 12.50, 6.25, 3.12 and 1.56 mg mL-1. The concentrations lethal to 50% of the individuals (LC50) of tick larvae after 24 hours of exposure were 3.62, 3.99...

Acaricidal activity of thymol against larvae of Rhipicephalus microplus (Acari: Ixodidae) under semi-natural conditions.

Palavras-chave: Cattle tick; Bioassay; Active molecules; Piperaceae.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000100057

ARAÚJO, L. X.; NOVATO, T. P. L.; ZERINGOTA, V.; MATOS, R. S.; SENRA, T. O. S.; MATURANO, R.; PRATA, M. C. de A.; DAEMON, E.; MONTEIRO, C. M. O..

2015

Analysis of biological parameters of Boophilus microplus Canestrini, 1887 exposed to entomopathogenic nematodes Steinernema carpocapsae Santa Rosa and All strains (Steinernema: Rhabditida)

Palavras-chave: Cattle tick; Brachiaria decumbens; Semi-natural conditions; Monoterpene.

Ano: 2015

URL: http://www.alice.cnptia.embrapa.br/handle/doc/1037093

BABT

Freitas-Ribeiro,Gláucia Marques; Furlong,John; Vasconcelos,Viviane Oliveira; Dolinski,Cláudia; Loures-Ribeiro,Alan.

Engorged and partially engorged females of Boophilus microplus were exposed to 600; 3,000; 6,000 and 30,000 infective juveniles of Steinernema carpocapsae Weiser, 1955 Santa Rosa and All strains per dish, under lab conditions. Eggs weight, pre-laying period, laying period, survival period, reproductive efficiency rate, percentage of larval eclosion and lethal concentrations of 50% and 90% (CL50 and CL90) were calculated for engorged females. In the case of partially engorged females, only egg weight, survival period and CL50 and CL90 were calculated. All biological parameters of engorged or partially engorged females were altered by exposition of S. carpocapsae infective juveniles (IJs), Santa Rosa and All strains (p<0.05). The increase in the response...

Caracterização do controle de Haematobia irritans e Rhipicephalus (Boophilus) microplus no Triângulo Mineiro e Alto Paranaíba, Minas Gerais.

Palavras-chave: Boophilus microplus; Steinernema carpocapsae; Entomopathogenic nematodes; Cattle tick; Reproduction.

Ano: 2005

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800007

DOMINGUES, L. N.; BELLO, A. C. P. P.; CUNHA, A. P.; LEITE, P. V. B.; BARROS, A. T. M. de; LEITE, R. C..

O controle eficaz de Haematobia irritans (mosca-dos-chifres) e Rhipicephalus (Boophilus) microplus (carrapato-do-boi) é um fator crucial à maior rentabilidade da pecuária brasileira, porém ainda constitui-se um desafio. Um maior conhecimento das práticas adotadas no combate destes parasitos faz-se necessário para que se possam estruturar estratégias de controle mais próximas da realidade do produtor rural e mais fáceis de serem executadas. Este estudo caracterizou, através de entrevistas, as práticas adotadas no controle desses ectoparasitos em 23 propriedades da mesorregião do Triângulo Mineiro e Alto Paranaíba, Minas Gerais. A maioria dos entrevistados reconheceu a importância desses parasitos para a atividade pecuária, entretanto, diversos problemas...

Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil.

Palavras-chave: Mosca-dos-chifres; Carrapato-do-boi; Entrevistas; Controle parasitário; Horn fly; Haematobia irritans; Cattle tick; Rhipicephalus (Boophilus) microplus interview; Parasite control.

Ano: 2012

URL: http://www.alice.cnptia.embrapa.br/handle/doc/948584

ANDREOTTI, R.; BARROS, J. C.; GARCIA, M. V.; RODRIGUES, V. da S.; HIGA, L. de O. S.; DUARTE, P. O.; BLECHA, I. M. Z.; BONATTE-JUNIOR, P..

The present study evaluated the behavior of Rhipicephalus microplus naturally infesting Brangus cattle raised with Nellore animals in the municipality of Água Clara, state of Mato Grosso do Sul, Central Brazil. For the field experiment composed of a group with 15 Brangus animals and 15 Nellore animals and a control group with 30 Brangus cattle, all at the post-weaning stage. The 2 groups were kept for 6 months in 2 adjacent paddocks, naturally infested with ticks, at a stocking rate of approximately 0.6 of an animal unit per hectare (AU/ha). Every 18 days, the animals were weighed, and ticks on both sides of each bovine were counted. Every 36 days, blood was collected for hematocrit measurement and molecular diagnosis of the 3 pathogens that cause tick...

Characterization of the pyrethroid resistance profile of Rhipicephalus (Boophilus) microplus populations from the states of Rio Grande do Sul and Mato Grosso do Sul, Brazil.

Palavras-chave: Carrapato-do-boi; Bovine; Cattle tick; Control; Infestation; Bovino; Infestação.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101878

MENDES, M. C.; DUARTE, F. C.; MARTINS, J. R.; KLAFKE, G. M.; FIORINI, L. C.; BARROS, A. T. M. de.

2013

Commercial formulation of Metarhizium anisopliae for the control of Rhipicephalus microplus in a pen study.

Palavras-chave: Cattle tick; Acaricide resistance; Synthetic pyrethroids; PCR; Carrapatos-dos-bovinos; Resistência acaricida; Piretróides sintéticos.

Ano: 2013

URL: http://www.alice.cnptia.embrapa.br/handle/doc/977444

CAMARGO, M. G.; MARCIANO, A. F.; SÁ, F. A.; PERINOTTO, W. M. S.; QUINELATO, S.; GÔLO, P. S.; ANGELO, I. C.; PRATA, M. C. de A.; BITTENCOURT, V. R. E. P..

2014

Comparative study of hatching estimation methods of Rhipicephalus (Boophilus) microplus eggs.

Palavras-chave: Biological control; Acaripathogenic fungi; Cattle tick; Oil formulation; Pen studies.

Ano: 2014

URL: http://www.alice.cnptia.embrapa.br/handle/doc/1034883

FIGUEIREDO, A.; AGNOLON, I. C.; LOPES, L. G.; GIGLIOTI, R.; CHAGAS, A. C. de S..

Reproductive parameters of Rhipicephalus (Boophilus) microplus are often evaluated. They are good indicators of resistance to commercial acaricides and of plant extracts? efficacy. The objective of this study was to compare the techniques: visual estimation and quantification by sampling used in the Adult Immersion Test (AIT) to calculate the hatching rate of eggs. Engorged females collected from cattle were subjected to the AIT with plant extracts and kept in an incubator for oviposition. The egg hatching was evaluated in 210 syringes by visual estimation (%). Then, eggs and larvae were counted into samples of 100 individuals, in three repetitions by stereo microscope. Significant differences were found between the two tests (p?0.05). The egg hatching...

Esterase profile in the postembryonic development of Rhipicephalus microplus

Palavras-chave: Cattle tick; Methods of larvae estimation; Visual estimation; Quantification by sampling; Adult immersion test (AIT); Rhipicephalus (Boophilus) microplus.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100813

BAFFI, M.A.; PEREIRA, C.D.; SOUZA, G.R.L. de; CERON, C.R.; BONETTI, A.M..

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.

Esterase profile in the postembryonic development of Rhipicephalusmicroplus

Palavras-chave: Cattle tick; Resistance to acaricides; Tick control; Carrapato bovino; Resistência a acaricidas; Controle de carrapatos.

Ano: 2007

URL: http://www.alice.cnptia.embrapa.br/handle/doc/122794

PAB

Baffi,Milla Alves; Pereira,Cícero Donizete; Souza,Guilherme Rocha Lino de; Ceron,Carlos Roberto; Bonetti,Ana Maria.

Evaluation of activity of the crude ethanolic extract of Magonia pubescens St. Hil (Sapindaceae) against larvae of the cattle tick Rhipicephalus (Boophilus) microplus (Canestrini, 1887) (Acari: Ixodidae)

Palavras-chave: Cattle tick; Resistance to acaricides; Tick control.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000800016

BABT

Fernandes,Fernando de Freitas; Bessa,Priscilla Antunes Diógenes; Freitas,Edméia de Paula e Souza.

The acaricidal potential of the crude ethanolic extract (c.e.e.) of the stem peel of Magonia pubescens was evaluated against larvae of Rhipicephalus (Boophilus) microplus. The larvae were placed in filter paper envelopes impregnated with different concentrations of c.e.e., dissolved in dimethylsulfoxide (DMSO) and distilled water for determination of lethal concentrations (LC). The following treatments were used: 1. Envelopes of dry filter paper; 2. Envelopes of filter paper moistened with distilled water; 3. Envelopes of filter paper moistened with a solution of DMSO in distilled water; and 4. Envelopes moistened with 2 mL of each concentration of the c.e.e. to be tested. The bioassays were carried out in quadruplicate at 27°±1° C and RH e"80% and 12h...

Evaluation of the efficacy of acaricides used to control the cattle tick, rhipicephalus microplus, in dairy herds raised in the Brasilian Southwestern Amazon.

Palavras-chave: Botanical acaricide; Sapindaceae; Magonia pubescens; Tinguí-do-cerrado; Boophilus microplus; Cattle tick.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000600009

BRITO, L. G.; BARBIERI, F. da S.; ROCHA, R. B.; OLIVEIRA, M. C. de S.; RIBEIRO, E. S..

2011

Gene Expression in the Salivary Gland of Rhipicephalus (Boophilus) microplus Fed on Tick-Susceptible and Tick-Resistant Hosts.

Palavras-chave: Cattle tick; Control; Acarides.

Ano: 2011

URL: http://www.alice.cnptia.embrapa.br/handle/doc/890936

GIACHETTO, P. F.; CUNHA, R. C.; NHANI JUNIOR, A.; GARCIA, M. V.; FERRO, J. A.; ANDREOTTI, R..

The success of cattle tick fixation largely depends on the secretion of substances that alter the immune response of the host. The majority of these substances are expressed by the parasite salivary gland and secreted in tick saliva. It is known that hosts can mount immune responses against ticks and bovine European breeds, and bovine industrial crossbreeds are more susceptible to infestations than are Bos indicus cattle. To identify candidates for the development of novel control strategies for the cattle tick Rhipicephalus (Boophilus) microplus, a salivary gland transcriptome analysis of engorged females fed on susceptible or resistant hosts was performed. Using RNA-Seq, transcriptomes were de novo assembled and produced a total of 235,451 contigs with...

Host Preference and Seasonal Variation of Tick (Amblyomma cohaerens Donitz, 1909) on Naturally Infested Cattle in Jimma Zone, Southwestern Ethiopia

Palavras-chave: RNA-Seq; Cattle tick; Host-parasite interaction; Sialome; Transcriptome; Cattle.

Ano: 2020

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119455

JARTS

Gashaw, Abebaw.

The seasonal dynamics of tick Amblyomma cohaerens on naturally infested cattle in Jimma Zone was studied from September 1998 to September 2000 using fifty cattles in five Localities. Monthly tick counts were made for two consecutive years. Although, Amblyomma cohaerens infestation occurred throughout the year, it was greater at the beginning and end of the rainy season. High humidity and temperature were the factors that influence the seasonal variation.Th e study on the host preference of different blood groups showed that host selection and specificity correlate with the abundance and distribution of the tick. These have been reflected by the presence of more tick in highbred cattle than the indigenous Zebu.

Metarhizium anisopliae for controlling Rhipicephalus microplus ticks under field conditions.

Palavras-chave: Animal Science and Zoology Amblyomma cohaerens; Breed preference; Cattle tick; Ethiopia; Seasonal variation.

Ano: 2005

URL: http://www.jarts.info/index.php/jarts/article/view/81

CAMARGO, M. G.; NOGUEIRA, M. R. S.; MARCIANO, A. F.; PERINOTTO, W. M. S.; COUTINHO-RODRIGUES, C. J. B.; SCOTT, F. B.; ANGELO, I. C.; PRATA, M. C. de A.; BITTENCOURT, V. R. E. P..

Abstract Metarril SP Organic is a product based on the fungus Metarhizium anisopliae, which was developed for controlling agricultural pests. The present study evaluated the effect of Metarril SP Organic plus 10% mineral oil, for controlling Rhipicephalus microplus under field conditions. Three groups were formed: Control group, which received no treatment; Oil control group, which was bathed only with water, Tween 80 and mineral oil; and Metarril group, bathed in the oil-based formulation Metarril SP Organic. Two treatments per group were performed and to verify the effect of the treatments, all R. microplus ticks between 4.5 and 8.0 mm in length on the left side of the cattle were counted on days +7, +14 and +21 after each treatment, and a sample of...

Molecular quantitative assay for esterase-mediated organophosphate resistance in Rhipicephalus microplus.

Palavras-chave: Biological control; Arthropod-pathogenic fungi; Cattle tick; Oil-based formulations.

Ano: 2016

URL: http://www.alice.cnptia.embrapa.br/handle/doc/1064172

BRITO, L. G.; NERY, L. de O.; BARBIERI, F. da S.; HUACCA, M. E. F.; PEREIRA, S. dos S.; SILVA, R. R. da; FERNANDES, C. F. C.; OLIVEIRA, M. C. de S..

The use of pesticides is the main tool to control infestations of the cattle tick Rhipicephalus microplus, and organophosphate (OP) is one of the most used compounds for this purpose. Carboxylesterases (ChEs) are targets for OP pesticides in arthropods, and acetylcholinesterase 2 (AChE2) and esterase 1 (EST1) are metabolic enzymes involved in the xenobiotic detoxification process. The increase in the synthesis of these enzymes can be detected by the quantitative polymerase chain reaction (qPCR) assay, which was used to identify cattle tick populations resistant to OP pesticides. For that, two field populations of R. microplus were used, one previously identified by the larval packet test (LPT) as OP −sensitive (LC50 = 0.13 μg/cm2) and...