Results 31 to 40 of about 211 (113)

Hosts, distribution and genetic divergence (16S rDNA) of Amblyomma dubitatum (Acari: Ixodidae)

Experimental and Applied Acarology, 2010
We supply information about hosts and distribution of Amblyomma dubitatum. In addition, we carry out an analysis of genetic divergence among specimens of A. dubitatum from different localities and with respect to other Neotropical Amblyomma species, using sequences of 16S rDNA gene. Although specimens of A.
Nava, Santiago, Venzal, José M., Labruna, Marcelo B., Mastropaolo, Mariano, González, Enrique M., Mangold, Atilio Jose, Guglielmone, Alberto Alejandro   +6 more
openaire   +3 more sources

Genotypic Characterization of Rickettsia bellii Reveals Distinct Lineages in the United States and South America

BioMed Research International, Volume 2018, Issue 1, 2018., 2018
The bacterium Rickettsia bellii belongs to a basal group of rickettsiae that diverged prior to the pathogenic spotted fever group and typhus group Rickettsia species. Despite a diverse representation of R. bellii across more than 25 species of hard and soft ticks in the American continent, phylogeographical relationships among strains of this basal ...
Felipe S. Krawczak, Marcelo B. Labruna, Joy A. Hecht, Christopher D. Paddock, Sandor E. Karpathy, Stephan Koblmüller   +5 more
wiley   +1 more source

Rickettsia parkeri in Amblyomma dubitatum ticks in a spotted fever focus from the Brazilian Pampa

Acta Tropica, 2017
Spotted fever is an acute febrile illness, which is considered severely underreported and misdiagnosed in the Brazilian Pampa, caused by tick-borne Rickettsiae. Here, we report an eco-epidemiological investigation of Rickettsia spp. in ticks from a spotted fever focus in Toropi, southern Brazil.
Bárbara, Weck, Bruno, Dall'Agnol, Ugo, Souza, Anelise, Webster, Bárbara, Stenzel, Guilherme, Klafke, João Ricardo, Martins, José, Reck   +7 more
openaire   +2 more sources

Ticks in wild animals at a resort and the first documentation of Amblyomma sculptum infesting Emu (Dromaius novaehollandiae)

Revista Brasileira de Parasitologia Veterinária, 2019
The study aimed to identify species of ticks present in the environment and among captive animals, in Mangaratiba, Rio de Janeiro, Brazil. Ticks were isolated from captive animals by manual examination and free-living ticks in the environment were ...
Izabela Mesquita Araújo, Paulo Cesar Magalhães-Matos, Matheus Dias Cordeiro, Adlilton Pacheco, Bruno Silva Rocha, Luis Felipe Barbosa Braga Feitoza, Argemiro Sanavria, Adivaldo Henrique Fonseca   +7 more
doaj   +1 more source

Experimental infection with Rickettsia rickettsii in an Amblyomma dubitatum tick colony, naturally infected by Rickettsia bellii

Ticks and Tick-borne Diseases, 2014
Amblyomma dubitatum engorged females, naturally infected by Rickettsia bellii, were used to establish a laboratory colony. Larvae, nymphs, and adults were exposed to two strains of Rickettsia rickettsii by feeding on needle-inoculated guinea pigs, and thereafter reared on uninfected guinea pigs.
Renata K, Sakai, Francisco B, Costa, Tatiana E H, Ueno, Diego G, Ramirez, João F, Soares, Adivaldo H, Fonseca, Marcelo B, Labruna, Darci M, Barros-Battesti   +7 more
openaire   +2 more sources

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   +1 more source

Spotted fever group Rickettsia in Amblyomma dubitatum tick from the urban area of Campo Grande, Mato Grosso do Sul, Brazil [PDF]

Ticks and Tick-borne Diseases, 2015
Rickettsia infection of each tick was evaluated by the hemolymph test and polymerase chain reaction (PCR) targeting gltA and ompA genes. All hemolymph tests were negative and PCR of one A. dubitatum detected both Rickettsia genes. Sequence of ompA exhibited a 99% identity with Rickettsia parkeri and R. africae and a 98% identity with R.
Jaqueline, Matias, Marcos Valério, Garcia, Rodrigo Casquero, Cunha, André de Abreu Rangel, Aguirre, Jacqueline Cavalvante, Barros, Bárbara Guimarães, Csordas, Renato, Andreotti   +6 more
openaire   +2 more sources

Molecular screening of Bartonella in free-ranging capybaras (Hydrochoerus hydrochaeris) from Paraná State, Southern Brazil

Semina: Ciências Agrárias, 2022
Bartonella is an emerging group of facultative intracellular bacteria causing circulatory and systemic disorders. Hosts for Bartonella are mostly mammals, specifically rodents, having a growing number of Bartonella species related to their infection ...
Nelson Jessé Rodrigues dos Santos, Renan Bressianini do Amaral, Luiz Ricardo Gonçalves, Rogério Ribas Lange, Juan Carlos Moreno Duque, Flávia Carolina Meira Collere, Larissa Dantas Roeder Ferrari, Thállitha Samih Wischral Jayme Vieira, Marcos Rogério André, Rafael Felipe da Costa Vieira   +9 more
doaj   +1 more source

Influence of microhabitat use and behavior of Amblyomma sculptum and Amblyomma dubitatum nymphs (Acari: Ixodidae) on human risk for tick exposure, with notes on Rickettsia infection

Ticks and Tick-borne Diseases, 2018
Brazilian spotted fever (BSF) is a potentially lethal human disease caused by Rickettsia rickettsii transmitted by ticks, including Amblyomma sculptum. However, in Southeast Brazil, where most BSF cases occur, capybaras are key hosts for both A. sculptum and Amblyomma dubitatum.
Adalberto Albuquerque, Pajuaba Neto, Vanessa do Nascimento, Ramos, Maria Marlene, Martins, Carolina Fonseca, Osava, Jamile de Oliveira, Pascoal, Adriane, Suzin, Jonny, Yokosawa, Matias Pablo Juan, Szabó   +7 more
openaire   +2 more sources

Diversity of ticks in the wildlife screening center of São Paulo city, Brazil

Ciência Rural
: The Wildlife Screening Center (CETAS) of the Tietê Ecological Park (PET), situated at the municipality of São Paulo, receives, treats and rehabilitates wild animals that have been dislodged from their natural environment due to different reasons.
Thiago Fernandes Martins, Liliane Milanelo, Felipe da Silva Krawczak, Haroldo Ryoiti Furuya, Lilian Sayuri Fitorra, Fábio Toledo das Dores, Valéria da Silva Pedro, Alicia Giollo Hippolito, Marcelo Bahia Labruna   +8 more
doaj   +1 more source