Results 31 to 40 of about 675 (155)

Biodiversity of Potential Vectors of Rickettsiae and Epidemiological Mosaic of Spotted Fever in the State of Paraná, Brazil [PDF]

Frontiers in Public Health, 2021
Spotted Fever Rickettsioses (SFR) are diseases caused by bacteria of the genus Rickettsia, and are transmitted mainly by ticks. Its eco-epidemiological scenarios vary spatially, and may also vary over time due to environmental changes.
Liliane Silva Durães, Liliane Silva Durães, Karla Bitencourth, Frederico Rodrigues Ramalho, Mário Círio Nogueira, Emília de Carvalho Nunes, Emília de Carvalho Nunes, Gilberto Salles Gazêta, Gilberto Salles Gazêta   +8 more
doaj   +2 more sources

Study of the life cycle of Amblyomma dubitatum (Acari: Ixodidae) based on field and laboratory data

Experimental and Applied Acarology, 2014
The life cycle of Amblyomma dubitatum was described based on the seasonal distribution of all parasitic stages and the development periods of engorged ticks under different conditions of photoperiod and temperature. All stages were found active along the entire year in the study area.
Debárbora, Valeria Natalia, Mangold, Atilio Jose, Oscherov, Elena Beatriz, Guglielmone, Alberto Alejandro, Nava, Santiago   +4 more
openaire   +5 more sources

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

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   +4 more sources

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   +4 more sources

Automated identification of spotted-fever tick vectors using convolutional neural networks. [PDF]

Med Vet Entomol
We evaluate the performance of convolutional neural networks (CNN) AlexNet, ResNet‐50 and MobileNetV2 for the automated identification of tick species capable of transmitting spotted fever. CNNs achieved accuracy rates of ~90% in identifying ticks and showed sensitivities of 59%–100% according to species, sex, position or image resolution.
Gomes IRC, Miranda VL, Leal JFC, Oliveira IP, Silva PJ, Bitencourth K, Rodrigues CM, Siqueira LR, Labruna MB, Gazeta GS, Amorim M, Gurgel-Gonçalves R.   +11 more
europepmc   +2 more sources

Ticks and tick-borne bacterial pathogens found on hard ticks (Acari: Ixodidae) on cattle in the Central River region of The Gambia. [PDF]

Med Vet Entomol
First detection of Ehrlichia minasensis, Anaplasma marginale and hemotropic Mycoplasma spp. in cattle in The Gambia. Identification of four tick species, with Hyalomma marginatum being the most common. 15.6% of ticks tested positive for tick‐borne pathogens, including Ehrlichia spp., A. marginale and hemotropic Mycoplasma spp.
Kargbo A, Osman AM, Jawo E, Fatty LKM, Collere FCM, André MR, Hassan-Kadle AA, Vieira TSWJ, Machado RZ, Vieira RFC.   +9 more
europepmc   +2 more sources

Host-parasite relationship in urban environments: A network analysis of haemoparasite infections in Nasua nasua Linnaeus (South American coati). [PDF]

Med Vet Entomol
Urban environments alter host–parasite dynamics, as seen in Nasua nasua, where haemotropic Mycoplasma plays a key role in parasite spread through frequent social interactions. Network analysis revealed low modularity in interactions between N. nasua and tick‐borne haemoparasites, with functional roles unaffected by biotic factors, tick infestation or ...
Santos FM, Sano NY, Perles L, André MR.
europepmc   +2 more sources

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

Identificação sorológica de Rickettsia spp do grupo da febre maculosa em capivaras na região de Campinas, SP, Brasil [PDF]

, 2008
Diseases transmitted by ticks have been an important health problem all over the world. Brazilian Spotted Fever (BSF) stands for a serious epidemiological concern due to the high mortality rates pointed out.
CALIC, Simone Berger, CAMARGO, Maria Cecilia Gibrail Oliveira, D'AURIA, Sandra Regina Nicoletti, LIMA, Virgília Luna Castor, LINHARES, Arício Xavier, SAVANI, Elisa San Martin Mouriz, SOUZA, Celso Eduardo de, SOUZA, Savina Silvana Lacerra de, YOSHINARI, Natalino Hajime   +8 more
core   +5 more sources

Capybara (Hydrochoerus hydrochaeris) exposure to Rickettsia in the Federal District of Brazil, a non-endemic area for Brazilian spotted fever

Revista Brasileira de Parasitologia Veterinária, 2021
In this study, whole blood samples and ticks were collected from 57 capybaras in recreational areas in the Federal District, Brazil, aiming to investigate the presence of Rickettsia spp.
Ana Paula Nunes de Quadros, George Magno Sousa do Rêgo, Thamiris Figueiredo da Silva, Andréa de Moraes Carvalho, Thiago Fernandes Martins, Lina de Campos Binder, Márcio Botelho de Castro, Paulo Sérgio Ribeiro de Mattos, Marcelo Bahia Labruna, Giane Regina Paludo   +9 more
doaj   +1 more source