Results 141 to 150 of about 675 (155)

Comparing scapular morphology of Amblyomma sculptum and Amblyomma dubitatum nymphs allows a fast and practical differential diagnosis of ticks in highly infested areas with dominance of these two species

Experimental and Applied Acarology, 2022
Rickettsia rickettsii infection causes the highest human fatality rate among all Rickettsia species of the world and is endemic in Southeast Brazil. In this part of the country most human spotted fever cases are related to unnaturally high populations of ticks, usually a mix of two species, Amblyomma dubitatum Neumann and Amblyomma sculptum Berlese and
Adriane Suzin, Vinicius da Silva Rodrigues, Vanessa do Nascimento Ramos, Matias Pablo Juan Szabó   +3 more
openaire   +4 more sources

Vector competence and transovarial transmission of Rickettsia rickettsii in Rickettsia bellii-infected and -uninfected Amblyomma dubitatum ticks

Experimental and Applied Acarology
Brazilian spotted fever (BSF) is endemic in southeastern Brazil, where Amblyomma sculptum is the main vector incriminated in the transmission of R. rickettsii to humans. In many BSF-endemic areas capybaras are the main hosts for A. sculptum and also efficient amplifiers of R. rickettsii for this tick species.
Lina C, Binder, Carlos E C, Fanchini, Herbert S, Soares, Matheus P, Martins, Igor S, Silito, Marcelo B, Labruna   +5 more
openaire   +4 more sources

Amblyomma dubitatum Neumann 1899

2020
34. Amblyomma dubitatum Neumann, 1899. A Neotropical species, all of whose parasitic stages are usually found on Rodentia: Caviidae, but they have also been recovered from Mammalia (several orders); immature stages have been collected from Rheiformes: Rheidae, and Passeriformes: Furnariidae, Passerellidae and Turdidae.
Guglielmone, Alberto A., Nava, Santiago, Robbins, Richard G.   +2 more
openaire   +1 more source

Seasonal dynamics and rickettsial infection in free-living Amblyomma dubitatum in the Atlantic forest biome in north-eastern Brazil

Acta Tropica, 2021
The genus Amblyomma is the most representative tick genus in Brazil and some species act as vectors of pathogenic organisms to animals and humans. Information on the seasonal dynamics of Amblyomma spp. as well as on rickettsial organisms infecting these ticks in some regions in Brazil is still fragmentary.
Filipe Dantas-Torres, Marcela Ferreira Melo, Kamila Gaudêncio da Silva Sales, Lucas Christian de Sousa-Paula, Fernando José da Silva, Luciana Aguiar Figueredo, Marcelo Bahia Labruna   +6 more
openaire   +2 more sources

HUMAN PARASITISM BY THE CAPYBARA TICK, AMBLYOMMA DUBITATUM (ACARI: IXODIDAE)

Entomological News, 2007
During two field trips in the state of Sao Paulo, two of us became infested by two adults, three nymphs, and one larva of the capybara tick, Amblyomma dubitatum Neumann, 1899 (= Amblyomma cooperi Nuttall and Warbuton, 1908). Previously, there has been only a single report of an A. dubitatum adult tick from humans.
Marcelo B. Labruna, Richard C. Pacheco, Alexandre C. Ataliba, Matias P. J. Szabó   +3 more
openaire   +1 more source

Repellent activity of the non-host semiochemical (E)-2-octenal against Amblyomma sculptum and Amblyomma dubitatum ticks under field conditions

Experimental and Applied Acarology
Amblyomma ticks pose a significant public health threat due to their potential to transmit pathogens associated with rickettsial diseases. (E)-2-octenal, a compound found in donkeys (Equus asinus), exhibits strong repellent properties against Amblyomma sculptum nymphs under laboratory conditions.
Valesca Henrique Lima, Salorrane Miranda do Nascimento Pinto, Lucas Prado Barreto, André Lucio Franceschini Sarria, Gabriel Moura Mascarin, Éverton Kort Kamp Fernandes, Lígia Miranda Ferreira Borges   +6 more
openaire   +2 more sources

Experimental Infection of the OpossumDidelphis auritabyRickettsia felis, Rickettsia bellii, andRickettsia parkeriand Evaluation of the Transmission of the Infection to TicksAmblyomma cajennenseandAmblyomma dubitatum

Vector-Borne and Zoonotic Diseases, 2010
This work evaluated the infection of opossums (Didelphis aurita) by Rickettsia felis, Rickettsia bellii, and Rickettsia parkeri and their role as amplifier hosts for horizontal transmission to Amblyomma cajennense and/or Amblyomma dubitatum ticks. Infection in D. aurita was induced by intraperitoneal inoculation with R.
Maurício C, Horta, Guilherme S, Sabatini, Jonas, Moraes-Filho, Maria, Ogrzewalska, Raoní B, Canal, Richard C, Pacheco, Thiago F, Martins, Eliana R, Matushima, Marcelo B, Labruna   +8 more
openaire   +2 more sources

Records of the Invasive Cattle Tick Rhipicephalus microplus on Wild Hosts and of a Neotropical Tick, Amblyomma dubitatum, on Invasive Alien Mammals, Southern Brazil

Journal of Wildlife Diseases
Invasive species threaten wildlife. We detected invasive ticks on wildlife and indigenous ticks on invasive mammals in southern Brazil. The invasive cattle tick Rhipicephalus microplus was found on 12 native mammals and one invasive exotic (Axis axis). The Neotropical tick Amblyomma dubitatum was found on three invasive alien mammal species.
José, Reck, Greice Zorzato, Gonchoroski, Thais, Michel, Rovaina, Doyle, Guilherme, Klafke, Tatiane C, Trigo, Márcia, Jardim   +6 more
openaire   +2 more sources

Pesquisa de Rickettsia spp em carrapatos Amblyomma cajennense e Amblyomma dubitatum no Estado de São Paulo

Revista Da Sociedade Brasileira De Medicina Tropical, 2009
Richard C Pacheco, Maurício Claudio Horta, Adriano Pinter   +2 more
exaly  

New tick records from the state of Rondônia, western Amazon, Brazil

Experimental and Applied Acarology, 2013
Jose M Venzal, Francisco B Costa, Arlei Marcili   +2 more
exaly