Results 141 to 150 of about 1,476 (172)

A Rhipicephalus (Boophilus) microplus cathepsin with dual peptidase and antimicrobial activity

International Journal for Parasitology, 2012
The cattle tick, Rhipicephalus (Boophilus) microplus, is a haematophagous arthropod responsible for considerable losses in the livestock industry. Immunological control with vaccines is a promising alternative to replace chemical acaricides. Due to their importance in parasite physiology, cysteine endopeptidases are potential targets.
Daiane P, Oldiges, Luís F, Parizi, Karine R, Zimmer, Daniel M, Lorenzini, Adriana, Seixas, Aoi, Masuda, Itabajara, da Silva Vaz, Carlos, Termignoni   +7 more
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ABC transporters as a multidrug detoxification mechanism in Rhipicephalus (Boophilus) microplus

Parasitology Research, 2012
ATP-binding cassette (ABC) transporters are responsible for pumping drugs across membranes and are an important drug detoxification mechanism. Since ABC transporters act on a wide spectrum of chemical compounds, they have been associated with multidrug resistance phenotype in various parasites and cancer cells.
Paula C, Pohl, Guilherme M, Klafke, José Reck, Júnior, João Ricardo, Martins, Itabajara, da Silva Vaz, Aoi, Masuda   +5 more
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First report of fipronil resistance in Rhipicephalus (Boophilus) microplus of Mexico

Veterinary Parasitology, 2013
Five strains of Rhipicephalus (Boophilus) microplus collected from Tamaulipas Mexico were tested for resistance against several classes of acaricides commonly used. All were resistant to fipronil. Four of five were co-resistant to permethrin and coumaphos in addition to being resistant to fipronil.
Robert J, Miller, Consuelo, Almazán, Martín, Ortíz-Estrada, Ronald B, Davey, John E, George, Adalberto Peréz, De León   +5 more
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Rhipicephalus (Boophilus) microplus embryo proteins as target for tick vaccine

Veterinary Immunology and Immunopathology, 2012
Rhipicephalus (Boophilus) microplus is one of the most widely distributed tick in the world. The control of the parasite is based mainly on the use of chemical acaricides, which are produced from a limited set of molecules. These drugs induce selection of acaricide-resistant ticks, and are an important source of environmental pollution.
Adriana, Seixas, Pedro, Oliveira, Carlos, Termignoni, Carlos, Logullo, Aoi, Masuda, Itabajara, da Silva Vaz   +5 more
openaire   +2 more sources

Cross-resistance between fipronil and lindane in Rhipicephalus (Boophilus) microplus

Veterinary Parasitology, 2015
The southern cattle tick, Rhipicephalus (Boophilus) microplus (Canestrini), is one of the most damaging parasites of cattle in tropical and subtropical regions. Several chemical groups have been used for its control, including cyclodienes (lindane and dieldrin).
E, Castro Janer, G M, Klafke, M L, Capurro, T T S, Schumaker   +3 more
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Multiple paternity in Rhipicephalus (Boophilus) microplus confirmed by microsatellite analysis

Experimental and Applied Acarology, 2009
The aim of this study was to determine if individual ticks among the progeny of a single female Rhipicephalus (Boophilus) microplus tick removed from cattle under natural conditions are the result of mating with one or several males. To this end, simulations were run using an existing dataset of genotypes from 8 microsatellite loci to predict the ...
Cutulle, C., Jonsson, N.N., Seddon, J.M.
openaire   +5 more sources

Population structure of Australian isolates of the cattle tick Rhipicephalus (Boophilus) microplus

Veterinary Parasitology, 2009
Since its introduction in Australia, and despite decades of movement control, the cattle tick, Rhipicephalus (Boophilus) microplus, has spread widely in suitable habitat in the Northern Territory and the state of Queensland (QLD). On the east coast, its southerly distribution is limited by a tick quarantine line on the border with the state of New ...
Cutulle, C., Jonsson, N. N., Seddon, J.
openaire   +5 more sources

Systemic alterations of bovine hemostasis due to Rhipicephalus (Boophilus) microplus infestation

Research in Veterinary Science, 2009
The tick Rhipicephalus (Boophilus) microplus is a hematophagous ectoparasite that causes considerable economic losses to cattle breeding. Although R. microplus saliva contains several molecules that interfere with the blood coagulation process, so far the systemic alterations in the host hemostatic system have not been described.
J, Reck, M, Berger, R M S, Terra, F S, Marks, I, da Silva Vaz, J A, Guimarães, C, Termignoni   +6 more
openaire   +2 more sources

BYC, an atypical aspartic endopeptidase from Rhipicephalus (Boophilus) microplus eggs

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2008
An aspartic endopeptidase was purified in our laboratory from Rhipicephalus (Boophilus) microplus eggs [Logullo, C., Vaz, I.S., Sorgine, M.H., Paiva-Silva, G.O., Faria, F.S., Zingali, R.B., De Lima, M.F., Abreu, L., Oliveira, E.F., Alves, E.W., Masuda, H., Gonzales, J.C., Masuda, A., and Oliveira, P.L., 1998.
Maria Clara L, Nascimento-Silva, Alexandre T, Leal, Sirlei, Daffre, Luiz, Juliano, Itabajara, da Silva Vaz, Gabriela de O, Paiva-Silva, Pedro L, Oliveira, Marcos Henrique F, Sorgine   +7 more
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Off-host development and survival of Rhipicephalus (Boophilus) microplus in the Brazilian semiarid

Veterinary Parasitology: Regional Studies and Reports, 2017
Rhipicephalus (Boophilus) microplus is the most economically important tick of the world, including Brazil. Whereas the epidemiology of R. microplus is well known in most of the Brazilian land, virtually nothing is known from the Brazilian semiarid region, the Caatinga biome. Considering the relevance of R.
Michelline Nicolle D L, de Barros, Franklin, Riet-Correa, Sergio S, Azevedo, Marcelo B, Labruna   +3 more
openaire   +2 more sources