Results 11 to 20 of about 8,171 (197)

First report of Amblyomma sculptum (Amblyomma cajennense complex) in a Brazilian state classified as a silent area for human rickettsiosis [PDF]

Veterinary World, 2023
Background and Aim: Studies on ticks of public health concern in equine husbandry are scarce in the Northeastern region of Brazil. This study aimed to investigate the presence of ticks on horses in the State of Alagoas, which is classified as a silent ...
Bruna Costa da Gama, Thiago Fernandes Martins, Marcelo Bahia Labruna, Rafael Felipe da Costa Vieira, Jonatas Campos de Almeida   +4 more
doaj   +6 more sources

Seasonal dynamics of Amblyomma sculptum: a review [PDF]

Parasites & Vectors, 2022
Background Amblyomma sculptum is a hard tick that is associated with domestic animals and the transmission of Brazilian spotted fever. This association has motivated several field studies on this ixodid tick within its distribution area in South America.
Luiza Gabriella Ferreira de Paula, Rafael Moreira do Nascimento, Artur de Oliveira Franco, Matias Pablo Juan Szabó, Marcelo Bahia Labruna, Caio Monteiro, Felipe da Silva Krawczak   +6 more
doaj   +5 more sources

Occurrence of Amblyomma sculptum and Amblyomma ovale ticks (Acari: Ixodidae) in the state of Paraná - Brazil

Acta Scientiarum: Biological Sciences
Amblyomma sculptum and Amblyomma ovale are ticks (Acari: Ixodidae) that commonly bite humans and are associated with Spotted Fever (SF). The objective of this study was to conduct a literature review of articles indexed in the Web of Science ...
Adriane Suzin, Nicole Geraldine de Paula Marques Witt, Otacílio Lopes de Souza da Paz, Larissa Warnavin   +3 more
doaj   +5 more sources

Ultrastructural characterization and quantification of hemocytes in engorged female Amblyomma sculptum ticks

Ticks and Tick-Borne Diseases
Amblyomma sculptum (formerly Amblyomma cajennense) ticks have been implicated in the transmission of pathogens that cause diseases in animals and humans.
Andressa Aparecida de Lima Reis, Barbara Rauta de Avelar, Marisa Beatriz da Silva Rocha, Debora Azevedo Borges, Diefrey Ribeiro Campos, Jessica Fiorotti, Patrícia Silva Golo, Fabio Barbour Scott   +7 more
doaj   +5 more sources

Comparative Susceptibility of Different Populations of Amblyomma sculptum to Rickettsia rickettsii [PDF]

Frontiers in Physiology, 2019
The bacterium Rickettsia rickettsii is the etiological agent of Brazilian spotted fever (BSF), which is transmitted in Brazil mainly by the tick Amblyomma sculptum. Herein, larvae and nymphs of six populations of A. sculptum were exposed to R. rickettsii
Monize Gerardi, Alejandro Ramírez-Hernández, Lina C. Binder, Felipe S. Krawczak, Fábio Gregori, Marcelo B. Labruna   +5 more
doaj   +6 more sources

New records for Amblyomma sculptum (Ixodidae) on non-passerine birds in Brazil [PDF]

Brazilian Journal of Veterinary Parasitology, 2016
The aim of this paper was to provide new records of Amblyomma sculptum on two species of terricolous birds in two areas of the Cerrado (savannah- like) bioma: two specimens of Cariama cristata were captured in the state of Goiás and one specimen ofCrax ...
Hermes R Luz, João Luiz Horácio Faccini, Gabriel Alves Landulfo   +2 more
exaly   +7 more sources

Amblyomma sculptum ticks on a giant otter from the Brazilian Pantanal. [PDF]

Rev Bras Parasitol Vet, 2023
The giant otter (Pteronura brasiliensis) is a semiaquatic carnivore and a top predator in the trophic chain, considered a sentinel of freshwater ecosystems. Ticks are common ectoparasites of worldwide distribution and potential vectors of diseases.
Soresini G, Foerster N, Paiva F, Mourão G, Leuchtenberger C.   +4 more
europepmc   +8 more sources

Amblyomma sculptum Salivary PGE2 Modulates the Dendritic Cell-Rickettsia rickettsii Interactions in vitro and in vivo [PDF]

Frontiers in Immunology, 2019
Amblyomma sculptum is an important vector of Rickettsia rickettsii, causative agent of Rocky Mountain spotted fever and the most lethal tick-borne pathogen affecting humans. To feed on the vertebrate host's blood, A. sculptum secretes a salivary mixture,
Eliane Esteves, Bruna Bizzarro, Alejandro Ramírez-Hernández   +2 more
exaly   +7 more sources

Amblyomma cajennense Sensu Stricto (Fabricius, 1787) and Amblyomma sculptum (Berlese, 1888) Tick Saliva Elicit Immune-Modulatory Activity in Isolated Murine Macrophages With an Insight Into Proteomic Analysis. [PDF]

Parasite Immunol
ABSTRACT Tick saliva is known to cause immunosuppression and help pathogen transmission. Amblyomma sculptum is a public health concern as a vector of Rickettsia rickettsii. Another close‐related species is Amblyomma cajennense sensu stricto (s.s.). The impact of saliva from these species on murine macrophages remains unclear.
Aguirre AAR, Dos Reis VP, Setúbal SDS, Carioca ALPM, Tavares KM, Evaristo GPC, Evaristo JAM, Nogueira FCS, Medeiros JF, Zuliani JP.   +9 more
europepmc   +3 more sources

Fluazuron Baits in the Control of Amblyomma sculptum Tick: Efficacy and Pharmacokinetics Using Guinea Pigs as an Experimental Model [PDF]

Pathogens
The tick Amblyomma sculptum is the vector of the bacterium Rickettsia rickettsii (which causes Brazilian Spotted Fever in humans). It can be found in domestic and wild animals, as well as humans. The objective of this work was to evaluate the efficacy of
Debora Azevedo Borges, Isabelle Vilela Bonfim, Clara Rodrigues Dutra, Ingrid Lins Raquel de Jesus, Rayane Monteiro, Rayane Christine Pereira de Assis, Fernando Rocha Miranda, Yara Peluso Cid, Fabio Barbour Scott   +8 more
doaj   +3 more sources