| amblyomma aureolatum and ixodes auritulus (acari: ixodidae) on birds in southern brazil, with notes on their ecology. | between january 1999 and december 2000, 876 bird specimens were captured in three different ecological environments from the reinhard maack park, curitiba, state of paraná, southern brazil. a total of 142 birds (16.2%) were infested with amblyomma aureolatum (pallas 1772) (n=699) and/or ixodes auritulus neumann, 1904 (n=18) ticks. questing a. aureolatum nymphs (n=2) and adults (n=5) were also collected from the soil and the vegetation. none of the i. auritulus were collected off-host. we collect ... | 2003 | 14974693 |
| species diversity and seasonality of free-living ticks (acari: ixodidae) in the natural habitat of wild marsh deer (blastocerus dichotomus) in southeastern brazil. | this study evaluated the presence and seasonal activity of free-living ticks in remaining marsh areas by the paraná river, in brazil. eight field trips (once per season) for collection of ticks were performed during 2 years. using co2 traps, dragging, and visual inspection of vegetation, five free-living tick species were collected, in the following order of abundance: amblyomma cajennense, amblyomma dubitatum, amblyomma triste, amblyomma coelebs, and amblyomma nodosum. the seasonal pattern of a ... | 2007 | 16962241 |
| distribution, hosts, 16s rdna sequences and phylogenetic position of the neotropical tick amblyomma parvum (acari: ixodidae). | the hosts, distribution, intraspecific genetic variation and phylogenetic position of amblyomma parvum (acari: ixodidae) have recently been re-assessed. data on this tick's hosts and distribution were obtained not only from existing literature but also from unpublished records. sequences of the ticks' mitochondrial 16s ribosomal dna (rdna) were used to evaluate genetic variation among specimens of a. parvum from different localities in argentina and brazil, and to explore the phylogenetic relati ... | 2008 | 18577332 |
| [seasonal dynamics of amblyomma ticks (acari:ixodidae) in an urban park of londrina city, parana, brazil]. | ticks are important to public health due to diseases they transmit to animals and humans and, economic losses they cause to livestock production. among other agents, such as babesia, ehrlichia, anaplasma, the rickettsia are the most important pathogens transmitted by ticks in brazil. worldwide there are about 870 tick species described and, of these, 55 species were already reported in brazil, being the genus amblyomma the most numerous with 33 species. the a. cajennense is the principal tick in ... | 2008 | 20059815 |
| brazilian spotted fever in cart horses in a non-endemic area in southern brazil. | brazilian spotted fever (bsf) is an often fatal zoonosis caused by the obligate intracellular bacterium rickettsia rickettsii. the disease is generally transmitted to humans by amblyomma spp. ticks. serological evidence of past infection by r. rickettsii has been reported in horses, but the pathogenicity of r. rickettsii in horses remains unknown. cart horses are still widely used in urban and urban fringe areas in brazil, and these animals may constitute suitable sentinels for bsf human in thes ... | 2010 | 20624353 |
| first record of amblyomma scalpturatum neumann (acari: ixodidae) in the states of paraná and roraima, brazil. | amblyomma scalpturatum neumann has been reported in brazil in the northern (states of amazonas, pará and rondônia) and mid-western regions (states of mato grosso and mato grosso do sul). it has been found in association with large and medium sized mammals, as artiodactyla, perissodactyla, xenarthra and carnivora. in this paper, this tick species is reported for the first time in the brazilian states of paraná and roraima, southern and northern regions, respectively. | 2010 | 20676523 |
| infection by spotted fever rickettsiae in people, dogs, horses and ticks in londrina, parana state, brazil. | spotted fever is a disease caused by bacteria from the genus rickettsia of the spotted fever group (sfg). rickettsia rickettsii is likely the main agent of brazilian spotted fever (bsf). with the objective of gathering information on the circulation of sfg rickettsiae in londrina, parana state, ticks from dogs and horses and also blood from dogs, horses and humans were collected in a neighbourhood of the city which presented potential for circulation of rickettsiae between hosts and vectors. amb ... | 2011 | 21824336 |
| Study of infection by Rickettsiae of the spotted fever group in humans and ticks in an urban park located in the City of Londrina, State of Paraná, Brazil. | Spotted fevers are emerging zoonoses caused by Rickettsia species in the spotted fever group (SFG). Rickettsia rickettsii is the main etiologic agent of Brazilian spotted fever (BSF)and it is transmitted by Amblyomma spp. ticks. | 2011 | 21901874 |