9 documents found, page 1 of 1
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...
Microhabitat determines uneven distribution of Amblyomma parvum but not of Ambl...
RAMOS, V. do N.; RODRIGUES, V. da S.; PIOVEZAN, U.; SZABO, M. P. J.Environmental distribution of the two most abundant ticks in forest areas in the Brazilian Pantanal was evaluated by CO2 traps methodology in the wet season (peak of adult ticks) of 2012 and 2013. Adults of Amblyomma parvum were concentrated inside agglomerates of Bromelia balansae, in the border of forest patches. Adults of Amblyomma sculptumoccurred in similar numbers both in bromeliad clumps and in bromeliad...
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...
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...
Life cycle of Amblyomma mixtum (Acari: Ixodidae) parasitizing different hosts u...
PIÑA, F. T. B.; RODRIGUES, V. da S.; HIGA, L. de O. S.; GARCIA, M. V.; BARROS, J. C.; LEÓN, A. A. P. de; ANDREOTTI, R.Amblyomma mixtum is a tick species in the Amblyomma cajennense complex. The known geographic range of A. mixtum extends from Texas in theUSAto western Ecuador and some islands in the Caribbean. Amblyomma mixtum is a vector of disease agents of veterinary and public health importance. The objective of this study was to describe the life cycle of A. mixtum under laboratory conditions. Bovines, rabbits and sheep w...
Life cycle and parasitic competence of Dermacentor nitens Neumann, 1897 (Acari:...
RODRIGUES, V. da S.; GARCIA, M. V.; CRUZ, B. C.; MACIEL, W. G.; ZIMMERMANN, N. P.; KOLLER, W. W.; BARROS, J. C.; ANDREOTTI, R.The objective of this study was to evaluate the life cycle and parasitic competence of Dermacentor nitens(Neumann, 1897) on different animal species. Experimental infestations were induced in five specimenseach of seven species of possible hosts: rabbits, horses, sheep, cows, guinea pigs, birds and dogs. Rabbitswere infested in the ear using artificial feeding chambers, and the horses, sheep, cows and dogs were...
Efficacy of Tagetes minuta (Asteraceae) essential oil against Rhipicephalus san...
SILVA, E. M. G. da; RODRIGUES, V. da S.; JORGE, J. de O.; OSAVA, C. F.; JUAN SZABÓ, M. P.; GARCIA, M. V.; ANDREOTTI, R.Ticks from Rhipicephalus sanguineus complex are widely distributed in the world and one species from this complex is the most common tick on dogs in Brazil, notably in urban areas. This tick is a vector of several diseases. Among others it transmits the agent of canine Ehrlichiosis, a major dog infectious disease and the agent of Rocky Mountain spotted fever. This tick can spread rapidly and develop intolerable...