20 documents found, page 1 of 2
Evidence of acaricide resistance in different life stages of Amblyomma mixtum a...
HIGA, L. de O. S.; BARRADAS PIÑA, F. T.; RODRIGUES, V. da S.; GARCIA, M. V.; SALASE, D. R.; MILER, R. J.; LEON, A. P. de; BARROS, J. C.; ANDREOTTI, R.The objectives of this study were to evaluate the resistance of Amblyomma mixtum and Rhipicephalus microplus ticks from co-infested bovines from the Veracruz region in Mexico to different acaricide families and to demonstrate the viability of the packet test on different A. mixtum instars. The following acaricide families were used: a combination (cypermethrin 15 g+chlorpyrifos 25 g+citronella 1 g+butoxide pipe...
Economic efficiency of Rhipicephalus microplus control and effect on beef cattl...
CALVANO, M. P. C. A.; BRUMATTI, R. C.; GARCIA, M. V.; BARROS, J. C.; ANDREOTTI, R.The cattle tick Rhipicephalus microplus causes significant economic losses to cattle production systems and is a main barrier to the introduction of Bos taurus breeds and their crosses in Brazil. These breeds have the genetic potential to generate animals that are more productive, but they are also more susceptible to R. microplus. One of the alternatives for conventional tick control is the use of strategic co...
Gene Expression in the Salivary Gland of Rhipicephalus (Boophilus) microplus Fe...
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 indi...
Analysis of Bm86 conserved epitopes: is a global vaccine against Cattle Tick Rh...
BLECHA, I. M. Z.; CSORDAS, B. G.; AGUIRRE, A. de A. R.; CUNHA, R. C.; GARCIA, M. V.; ANDREOTTI, R.The cattle tick Rhipicephalus microplus causes significant economic losses in agribusiness. Control of this tick is achieved mainly through the application of chemical acaricides, often resulting in contamination of animal food products and of the environment. Another major concern associated with acaricide use is the increasing reports of resistance of this tick vector against the active ingredients of many co...
Wildlife species, Ixodid fauna and new host records for ticks in an Amazon fore...
ZIMMERMANN, N. P.; AGUIRRE, A. de A. R.; RODRIGUES, V. da S.; GARCIA, M. V.; MEDEIROS, J. F.; BLECHA, I. M. Z.; DUARTE, P. O.; CRUZ, B. C.; CUNHA, R. C.The objective of this work was to evaluate the diversity of ticks associated with free-living animals and to investigate new host records for ticks. Ticks were collected from animals rescued during the flood of the Jamari River in the municipality of Ariquemes, state of Rondônia, North Region of Brazil. A total of 39 animals were captured, out of which 10 were amphibians, 19 were reptiles and 10 were mammals. A...
Ticks on Didelphis albiventris from a Cerrado area in the Midwestern Brazil.
DE SÁ, E. F. G. G.; RODRIGUES, V. DA S.; GARCIA, M. V.; ZIMMERMANN, N. P.; RAMOS, V. Do N.; BLECHA, I. M. Z.; DUARTE, P. De O.; MARTINS, T. F.This experiment studied tick fauna associated to Didelphis albiventris Lund 1840 from a Cerrado area (Mato Grosso do Sul State, non-adjoining to Pantanal) inserted in a pasture and agricultural activities matrix, with few natural preserved forest patches. Authors also summarized data on ticks parasitizing Didelphis spp. in Brazil, and discussed infestation patterns in different biomes and locations. Study took ...
New records of tick-associated spotted fever group Rickettsia in an Amazon-Sava...
AGUIRREA, A. A. R. e; GARCIA, M. V.; COSTA, I. N. da; CSORDAS, B. G.; RODRIGUES, V. da S.; MEDEIROS, J. F.; ANDREOTTI, R.Human rickettsiosis has been recorded in the Amazon Biome. However, the epidemiological cycle of causative rickettsiae has not been fully accounted for in the Amazon region. This study investigates the presence of spotted fever group (SFG) Rickettsia spp. in free-living unfed ticks of the Amblyomma genus. The study was conducted in seven municipalities in Rondonia State, Brazil, where the main biomes are Amazon...
Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil.
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 ...
Biological parameters of Amblyomma coelebs Neumann, 1906 (Acari: Ixodidae) unde...
AGUIRRE, A. de A. R.; RODRIGUES, V. da S.; COSTA, I. N. da; GARCIA, M. V.; HIGA, L. de O. S.; MEDEIROS, J. F.; ANDREOTTI, R.One generation of Amblyomma coelebs life cycle under experimental conditions was evaluated. Ten tick pairs were allowed to feed on rabbits under laboratory conditions (LC), resulting six engorged females with a mean weight of 1,403.9 mg. Two females were maintained in a forest reserve under natural conditions (NC), and four were maintained in incubators (LC). The engorgement period lasted 10.33 days. Pre-ovipos...
Molecular characterization of the recombinant protein RmLTI-BmCG-LTB: Protectiv...
CSORDAS, B. G.; CUNHA, R. C.; GARCIA, M. V.; SILBA, S. da S.; LEITE, F. L.; ANDREOTTI, R.The bovine tick Rhipicephalus (Boophilus) microplus is found in several tropical and subtropical regions of the world. This parasite transmits pathogens that cause disease, such as babesiosis ( Babesia bovis and B . bigemina ) and anaplasmosis (Anaplasma marginale). Tick infestations cause enormous livestock losses, and controlling tick infestations and the transmission of tick-borne diseases remains a challeng...