Results 21 to 30 of about 1,381 (193)

Epidemiological surveillance of capybaras and ticks on warning area for Brazilian spotted fever [PDF]

Veterinary World, 2015
Aim: The vulnerability of tropical developing countries to the emerging disease constitutes a critical phenomenon in which the invasion of wild niches by human hosts, contributes to expansion of zoonotic diseases, such as the Brazilian spotted fever (BSF)
José Brites-Neto, Jardel Brasil , Keila Maria Roncato Duarte   +2 more
doaj   +2 more sources

Transmission dynamics and control of Rickettsia rickettsii in populations of Hydrochoerus hydrochaeris and Amblyomma sculptum. [PDF]

PLoS Negl Trop Dis, 2017
Brazilian Spotted Fever (BSF), caused by the bacterium Rickettsia rickettsii, is the tick-borne disease that generates the largest number of human deaths in the world. In Brazil, the current increase of BSF human cases has been associated with the presence and expansion of capybaras Hydrochoerus hydrochaeris, which act as primary hosts for the tick ...
Polo G, Mera Acosta C, Labruna MB, Ferreira F.   +3 more
europepmc   +5 more sources

Gut membrane proteins as candidate antigens for immunization of mice against the tick Amblyomma sculptum. [PDF]

Vaccine
Amblyomma sculptum is widely distributed in Brazil and is the main vector of Rickettsia rickettsii, the causative agent of the Brazilian spotted fever (BSF). Tick gut proteins play an essential role in blood feeding, digestion, and protection of gut epithelium.
Costa GCA, Ribeiro ICT, Giunchetti RC, Gontijo NF, Sant'Anna MRV, Pereira MH, Pessoa GCD, Koerich LB, Oliveira F, Valenzuela JG, Fujiwara RT, Bartholomeu DC, Araujo RN.   +12 more
europepmc   +3 more sources

Identification of a non-host semiochemical from tick-resistant donkeys (Equus asinus) against Amblyomma sculptum ticks. [PDF]

Ticks Tick Borne Dis, 2019
Amblyomma sculptum is a tick affecting animal and human health across Argentina, Bolivia, Paraguay and Brazil. Donkeys, Equus asinus, are known to be resistant to A.
Ferreira LL, Sarria ALF, de Oliveira Filho JG, de Silva FO, Powers SJ, Caulfield JC, Pickett JA, Birkett MA, Borges LMF.   +8 more
europepmc   +4 more sources

Ticks infesting wild small rodents in three areas of the state of São Paulo, Brazil [PDF]

Ciência Rural, 2016
: From May to September 2011, a total of 138 wild rodents of the Cricetidae family were collected in the cities of Anhembi, Bofete and Torre de Pedra, in São Paulo State.
Thiago Fernandes Martins, Marina Gea Peres, Francisco Borges Costa, Thais Silva Bacchiega, Camila Michele Appolinario, João Marcelo Azevedo de Paula Antunes, Acácia Ferreir Vicente, Jane Megid, Marcelo Bahia Labruna   +8 more
doaj   +3 more sources

Variation in the hatching rate of larvae of four tick species from laboratory colonies [PDF]

Revista Brasileira de Parasitologia Veterinária
The objective of this study was to evaluate the hatching percentage of tick larvae of Amblyomma sculptum, Dermacentor nitens, Rhipicephalus linnaei, and three strains of Rhipicephalus microplus.
Ygor Henrique da Silva, Marisa Beatriz da Silva Rocha, Ester Oliozi Marré, Manuela Pimentel da Motta, Brena Gava Guimarães, Thais Ribeiro Correia Azevedo, Guilherme Marcondes Klafke, Barbara Rauta de Avelar, Diefrey Ribeiro Campos, Fabio Barbour Scott   +9 more
doaj   +2 more sources

Artificial feeding of partially engorged Amblyomma sculptum females through capillaries*

Brazilian Journal of Veterinary Medicine, 2016
. Abel I., Cunha N.C., Rangel C.P., Corrêa F.N. & Fonseca A.H. Artificial feeding of partially engorged Amblyomma sculptum females through capillaries. [Alimentação artificial de fêmeas parcialmente ingurgitadas de Amblyomma sculptum, por meio de tubos ...
Isis Abel, Nathalie Costa da Cunha, Charles Passos Rangel, Fabíola do Nascimento Corrêa, Adivaldo Henrique da Fonseca   +4 more
doaj   +3 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   +2 more sources

Bats used as hosts by Amblyomma sculptum (Acari: Ixodidae) in Northeastern Brazil and its implications on tick-borne diseases [PDF]

Zoologia (Curitiba), 2020
Amblyomma Koch, 1844 is distributed worldwide, with ca. 130 species currently recognized. These ticks are vectors of pathogens to animals and humans, including the causative agent of the New World Rocky Mountain spotted fever ...
Roberto Leonan M. Novaes, Fernanda M. Alves, Renan F. Souza, Rafael S. Laurindo, Ricardo Moratelli   +4 more
doaj   +3 more sources

First description of conspecific hyperparasitism in Amblyomma sculptum

Ticks and Tick-borne Diseases, 2023
The present study reports a case of conspecific hyperparasitism for Amblyomma sculptum. Two partially engorged females were collected from two naturally infested dairy cows and placed in a single petri dish to be transported to the laboratory, where they were held in a biological oxygen demand (BOD) incubator chamber under controlled conditions of 27 ± 
Daniel Sobreira, Rodrigues, Marcelo B, Labruna, Lorena Lopes, Ferreira, Romário Cerqueira, Leite   +3 more
openaire   +2 more sources