Results 21 to 30 of about 567 (157)

Fluazuron orally administered to guinea pigs: pharmacokinetic and efficacy against Amblyomma sculptum. [PDF]

Parasit Vectors, 2022
AbstractBackgroundBrazilian spotted fever (BSF), the most lethal tick-borne disease in the Western Hemisphere, is caused by the bacteriumRickettsia rickettsiiand transmitted by the bite ofAmblyomma sculptum. Capybaras are considered primary hosts of this tick and amplifier hosts ofR. rickettsii, generating new infected lineages ofA.
Borges DA, Cid YP, Magalhães VS, Alves MCC, Ferreira TP, Bonfim IV, Lima EAS, de Freitas JP, Scott FB.   +8 more
europepmc   +4 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

Detection of Rickettsia spp. in Animals and Ticks in Midwestern Brazil, Where Human Cases of Rickettsiosis Were Reported

Animals, 2023
Brazilian spotted fever (BSF) is the most important tick-borne diseases affecting humans in Brazil. Cases of BSF have recently been reported in the Goiás state, midwestern Brazil.
Lucianne Cardoso Neves, Warley Vieira de Freitas Paula, Luiza Gabriella Ferreira de Paula, Bianca Barbara Fonseca da Silva, Sarah Alves Dias, Brenda Gomes Pereira, Bruno Sérgio Alves Silva, Anaiá da Paixão Sevá, Filipe Dantas-Torres, Marcelo B. Labruna, Felipe da Silva Krawczak   +10 more
doaj   +1 more source

Molecular Detection of Rickettsia spp. in Free Living Ticks in Military Instruction Areas in Southeast Brazil [PDF]

Brazilian Archives of Biology and Technology, 2023
The present study aimed for the molecular detection of Rickettsia spp. in ticks collected from military training areas in southeastern Brazil. Previously, a total of 9,374 free-living ticks in 66 military instruction areas of five Military Organizations (
Rubens Fabiano Soares Prado, Izabela Mesquita Araújo, Gilliard Ferreira, Bruna de Azevedo Baêta, Aline Nascimento Furtado de Freitas, Alexandro Guterres, Adivaldo Henrique da Fonseca, Matheus Dias Cordeiro   +7 more
doaj   +1 more source

The anal pore route is efficient to infect Amblyomma spp. ticks with Rickettsia rickettsii and allows the assessment of the role played by infection control targets

Frontiers in Cellular and Infection Microbiology, 2023
Adult Amblyomma sculptum and Amblyomma aureolatum ticks are partially refractory to Rickettsia rickettsii when fed on infected hosts, hindering the functional characterization of potentially protective targets in the bacterial acquisition. In the current
Marcelly Bastos Nassar, Daniel B. Pavanelo, Marcelo B. Labruna, Sirlei Daffre, Eliane Esteves, Andréa C. Fogaça   +5 more
doaj   +1 more source

Diversity and Seasonal Dynamics of Ticks on Ring-Tailed Coatis Nasua nasua (Carnivora: Procyonidae) in Two Urban Areas from Midwestern Brazil

Animals, 2022
Understanding the diversity and ecology of ectoparasites in wild animals is essential for surveillance of vector-borne diseases. Coatis (Nasua nasua) easily adapt to anthropized areas, favoring close contact with domestic animals and humans, with the ...
Livia Perles, Thiago Fernandes Martins, Wanessa Teixeira Gomes Barreto, Gabriel Carvalho de Macedo, Heitor Miraglia Herrera, Luis Antônio Mathias, Marcelo Bahia Labruna, Darci Moraes Barros-Battesti, Rosangela Zacarias Machado, Marcos Rogério André   +9 more
doaj   +1 more source

Repellent Activity of the Botanical Compounds Thymol, Carvacrol, Nootkatone, and Eugenol Against <i>Amblyomma sculptum</i> Nymphs. [PDF]

Pathogens
This study evaluated the repellent activity of the botanical compounds thymol, carvacrol, nootkatone, and eugenol (5%), as well as the combination of 2.5% nootkatone + 2.5% eugenol, against Amblyomma sculptum nymphs under laboratory and field conditions.
Barrozo MM, Santos EF, Chagas HDF, Carvalho RA, Silva IS, de Souza Oliveira A, Faria LCF, Teixeira ALC, Zeringota V, Luz HR, Ferreira LL, Monteiro C.   +11 more
europepmc   +4 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

CARRAPATOS EM animais silvestres DO BIOMA CERRADO triados pelo Cetas, IBAMA-goIÁS

Ciência Animal Brasileira, 2016
O Bioma Cerrado possui por volta de 320 mil espécies de animais e ocupa aproximadamente 25% do território brasileiro. Por sua grande diversidade de espécies, excita o tráfico ilegal de animais silvestres.
Thiago Souza Azeredo Bastos, Darling Melany de Carvalho Madrid, Adriana Marques Faria, Thais Miranda Silva Freitas, Guido Fontgalland Coelho Linhares   +4 more
doaj   +1 more source

Amblyomma sculptum Berlese 1888

, 2020
111. Amblyomma sculptum Berlese, 1888. Neotropical: 1) Argentina, 2) Bolivia, 3) Brazil, 4) Paraguay (Nava et al. 2014 a, Martins et al. 2016, Tarragona et al. 2018, Guglielmone et al. 2021). Amblyomma sculptum is a member of the Amblyomma cajennense species group and was treated as a synonym of Amblyomma cajennense before its redescription by Nava et ...
Guglielmone, Alberto A., Nava, Santiago, Robbins, Richard G.   +2 more
openaire   +3 more sources