Results 181 to 190 of about 10,174 (231)

Experimental infection and vector competence of Amblyomma patinoi, a member of the Amblyomma cajennense species complex, for the human pathogen Rickettsia rickettsii.

Ticks and Tick-borne Diseases, 2021
Amblyomma patinoi ticks infected with Rickettsia rickettsii are present in Colombia, but its vector competence is unknown. Hence, we evaluated the vector competence of A. patinoi with R. rickettsii under laboratory conditions. Experimental guinea pigs and rabbits (males and females) were separated in the infected group (IG) and the control group (CG ...
H. Martínez-Díaz, E. Forero-Becerra, Marylin Hidalgo, M. Labruna   +3 more
semanticscholar   +3 more sources

Ambush behavior of the tick Amblyomma sculptum (Amblyomma cajennense complex) (Acari: Ixodidae) in the Brazilian Pantanal.

Ticks and Tick-borne Diseases, 2017
We herein describe the ambush behavior of Amblyomma sculptum (Berlese 1888), a widespread and epidemiologically important tick in Brazil. Along two years of sampling by visual search in the Brazilian Pantanal, A. sculptum ticks were observed on the vegetation and in the leaf litter. Most of the ticks were observed between 10 and 50cm above ground level
V. N. Ramos, C. Osava, U. Piovezan, M. Szabó   +3 more
semanticscholar   +3 more sources

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Influence of hosts on the oviposition and hatching of engorged females Amblyomma cajennense sensu stricto (Acari: Ixodidae) with notes on new host records

Experimental and Applied Acarology
C. Tavares, I. C. Sousa, Rayssa Q. de Araújo, Carlos C. M. Ramos, R. M. S. Nogueira, L. Costa, J. L. Faccini, H. R. Luz   +7 more
semanticscholar   +3 more sources

Crude saliva of Amblyomma cajennense sensu stricto (Acari: Ixodidae) reduces locomotor activity and increases the hemocyte number in the females of Aedes aegypti (Diptera: Culicidae).

Experimental parasitology, 2023
Aedes aegypti are vector insects of arboviruses such as dengue, Zika, and chikungunya. All available vector control methods have limited efficacy, highlighting the urgent need to find alternative ones. Evidence shows that arachnids like ticks are sources
F. Cerri, M. S. Araújo, A. A. R. Aguirre, G. Evaristo, J. Evaristo, F. Nogueira, Jansen Fernandes de Medeiros, Quintino Moura Dias   +7 more
semanticscholar   +1 more source

Comparative survival of the engorged stages of Amblyomma cajennense sensu stricto and Amblyomma sculptum under different laboratory conditions.

Ticks and Tick-borne Diseases, 2018
Recent studies indicated that the taxon Amblyomma cajennense (Fabricius, 1787) is a complex of 6 valid species, of which only two, Amblyomma cajennense sensu stricto (s.s.) and Amblyomma sculptum Berlese, 1888 are present in Brazil; the former species is found exclusively in areas of the Amazon biome, and A.
M. Labruna
semanticscholar   +3 more sources

Amblyomma sculptum (Amblyomma cajennense complex) tick population maintained solely by domestic pigs.

Veterinary Parasitology: Regional Studies and Reports, 2016
In Brazil Amblyomma sculptum from Amblyomma cajennense complex is a tick species with a rather broad distribution encompassing the Cerrado Biome and devastated areas of the Atlantic rainforest. This species is also the major vector to humans of Rickettsia rickettsii, agent of the Brazilian spotted fever.
C. Osava, V. N. Ramos, A. C. Rodrigues, Hugo Vilela Dos Reis Neto, M. Martins, Jamile de Oliveira Pascoal, J. Yokosawa, M. Szabó   +7 more
semanticscholar   +3 more sources

Amblyomma cajennense

CABI Compendium, 2022
This datasheet on Amblyomma cajennense covers Identity, Distribution, Hosts/Species Affected.

semanticscholar   +1 more source

Comparative Susceptibility of Larval Stages of Amblyomma aureolatum, Amblyomma cajennense, and Rhipicephalus sanguineus to Infection by Rickettsia rickettsii

Journal of Medical Entomology, 2008
The current study compared the susceptibility of larval stages of Amblyomma cajennense (F.), Amblyomma aureolatum (Pallas), and Rhipicephalus sanguineus (Latreille) to infection by a Brazilian strain of Rickettsia rickettsii. Guinea pigs experimentally infected by R. rickettsii were simultaneously infested by larvae of the three tick species. Recovered
Marcelo B Labruna, Maria Ogrzewalska, Thiago F Martins   +2 more
exaly   +3 more sources

Coxiella Symbionts in the Cayenne Tick Amblyomma cajennense

Microbial Ecology, 2011
Members of the Coxiella genus are intracellular bacteria that can infect a variety of animals including humans. A symbiotic Coxiella was recently described in Amblyomma americanum ticks in the Northern Hemisphere with no further investigations of other Amblyomma species in other geographic regions.
Erik, Machado-Ferreira, Gabrielle, Dietrich, Andrias, Hojgaard, Michael, Levin, Joseph, Piesman, Nordin S, Zeidner, Carlos A G, Soares   +6 more
openaire   +2 more sources

Gynandromorphism in Amblyomma cajennense and Rhipicephalus sanguineus (Acari: Ixodidae)

The Journal of Parasitology, 2002
During a survey of ticks on horses in November 2000, at the University of São Paulo farm in Pirassununga county, São Paulo, Brazil, 1 gynandromorph of Amblyomma cajennense was collected from a naturally infested horse. In another survey on dogs in March 2001, in the urban area of Monte Negro, Rondônia, Brazil, a gynandromorph of Rhipicephalus ...
M B, Labruna, A F, Ribeiro, M V, Cruz, L M A, Camargo, E P, Camargo   +4 more
openaire   +2 more sources