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Abstract

The bovine tick, Rhipicephalus microplus, is the main ectoparasite of cattle and causes loss of billions of dollars worldwide in lost meat, milk, and leather production, as well as control expenses. In addition to systemically impacting the host during the parasitic act, this parasite is also an...

Author(s)
Beys-da-Silva, W. O.; Rosa, R. L.; Berger, M.; Coutinho-Rodrigues, C. J. B.; Vainstein, M. H.; Schrank, A.; Bittencourt, V. R. E. P.; Santi, L.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Experimental Parasitology, 2020, 208, pp 107812
Abstract

This study aimed to determine the relationship between the variation in plasma concentration of ivermectin 3.15% over time and its efficacy against the cattle tick Rhipicephalus (Boophilus) microplus. In addition, a trial was conducted to infer if the application of successive treatments with...

Author(s)
Nava, S.; Rossner, M. V.; Ballent, M.; Mangold, A. J.; Lanusse, C.; Lifschitz, A.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2019, 268, pp 81-86
Abstract

This study investigated the local immune response at larval attachment sites in Santa Gertrudis cattle with low and high levels of tick resistance. Skin samples with tick larvae attached were collected from Santa Gertrudis cattle at the end of a period of 25 weekly infestations, when the animals...

Author(s)
Constantinoiu, C. C.; Lew-Tabor, A.; Jackson, L. A.; Jorgensen, W. K.; Piper, E. K.; Mayer, D. G.; Johnson, L.; Venus, B.; Jonsson, N. N.
Publisher
Wiley, Oxford, UK
Citation
Parasite Immunology, 2018, 40, 4, pp e12515
Abstract

The acaricidal activity of combinations of thymol, carvacrol and eugenol was evaluated on larvae and engorged females of the cattle tick Rhipicephalus microplus. The first step assessed the compounds separately, in concentrations of 3.125, 6.25, 12.5 and 25 mg/mL. Then tests were performed with the ...

Author(s)
Novato, T. L. P.; Marchesini, P.; Muniz, N.; Prata, M. C. de A.; Furlong, J.; Vilela, F. M. P.; Daemon, E.; Maturano, R.; Monteiro, C.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Experimental Parasitology, 2019, 207, pp 107774
Abstract

Resistance to cattle tick infestation in single-host ticks is primarily manifested against the larval stage and results in the immature tick failing to attach successfully and obtain a meal. This study was conducted to identify immune responses that characterize the tick-resistant phenotype in ...

Author(s)
Piper, E. K.; Jonsson, N. N.; Gondro, C.; Vance, M. E.; Lew-Tabor, A.; Jackson, L. A.
Publisher
Wiley, Oxford, UK
Citation
Parasite Immunology, 2017, 39, 1, pp e12402
Abstract

The southern cattle fever tick, Rhipicephalus (Boophilus) microplus, spends as much as 80-90% of its life cycle as a larva questing for a host. Standard control methods are limited to on-host applications, leaving a need for methods directed at the pasture infesting stages. Reports from Brazil...

Author(s)
Leal, B.; Thomas, D. B.; Dearth, R.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2017, 241, pp 39-42
Abstract

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...

Author(s)
Figueiredo, A.; Agnolon, I. C.; Lopes, L. G.; Giglioti, R.; Chagas, A. C. de S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2018, 264, pp 35-38
Abstract

Rhipicephalus (Boophilus) microplus is responsible for reducing animal welfare, causing a drop in productive performance and transmitting hemoparasites. The main strategy of tick control is application of synthetic acaricides. However, parasite resistance to these compounds is a major concern....

Author(s)
Figueiredo, A.; Nascimento, L. M.; Lopes, L. G.; Giglioti, R.; Albuquerque, R. D. D. G.; Santos, M. G.; Falcão, D. Q.; Nogueira, J. A. P.; Rocha, L.; Chagas, A. C. S.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2018, 252, pp 131-136
Abstract

This study reports the comparative evaluation of the activity of carvacrol, thymol, eugenol and their respective acetylated derivatives (carvacrol acetate, thymol acetate and eugenol acetate) on Rhipicephalus microplus, to verify the possible influence of the acetate group. The acetylated...

Author(s)
Novato, T.; Gomes, G. A.; Zeringóta, V.; Franco, C. T.; Oliveira, D. R. de; Melo, D.; Carvalho, M. G. de; Daemon, E.; Monteiro, C. M. de O.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2018, 260, pp 1-4
Abstract

Fipronil is a phenylpyrazole class insecticide. It is widely used as an insecticide in agriculture and in the control of ectoparasites in veterinary medicine. The application of fipronil in an injectable form (subcutaneously) becomes an innovation, since there is no commercially available...

Author(s)
Cid, Y. P.; Ferreira, T. P.; Magalhães, V. S.; Correia, T. R.; Scott, F. B.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2016, 220, pp 4-8

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