| epidemiological aspects of equine babesioses in a herd of horses in brazil. | epidemiological studies of babesia equi and b. caballi were undertaken in a herd of 120 pastured horses in rio de janeiro, brazil. the area where the horses were held was shown to be highly endemic for both babesia spp., i.e. the prevalence of b. equi antibodies in horses aged 6 months or older ranged from 90.6% to 100% as determined by the immunofluorescence antibody (ifa) test, and the prevalence of b. caballi antibodies as determined by western blot ranged from 59.4% to 65.5%. from the herd, ... | 1995 | 7676590 |
| seasonal analysis of the number of aeropiles in anocentor nitens (neumann, 1897) (acari: ixodidae) from the state of rio de janeiro, brazil. | variation between aeropile numbers of the right and left peritrematic plate in male and female anocentor nitens (neumann, 1897) is reported from a site in brazil. from january to december 1998, 146 males and 247 females of a. nitens were recovered from equus caballus l. in silva jardim district, state of rio de janeiro. asymmetry of numbers of aeropiles between right and left plates occurred in 83.6% of the males and 82.2% of the females. differences in the number of aeropiles between the sexes ... | 2001 | 11500781 |
| seasonal dynamics of ticks (acari: ixodidae) on horses in the state of são paulo, brazil. | natural tick infestations were assessed every 14 days on horses over a 2-year period. amblyomma cajennense adult ticks were counted individually, without detachment from the horses. larvae and nymphs of a. cajennense were collected using a rubber scraper that scratched engorged immature ticks from the host. adult females of anocentor nitens larger than 4mm length were counted on the horses. blood samples were also obtained from the horses every 14 days and macroclimatic data were obtained for th ... | 2002 | 11879967 |
| factors associated to theileria equi in equids of two microregions from rio de janeiro, brazil. | serum samples from 714 equids of itaguaí and serrana microregions, rio de janeiro, southeastern brazil, were examined by indirect fluorescent antibody test (titer 1:80) for theileria equi. the prevalence in the microregions and factors associated with seropositivity were evaluated and the prevalence ratio (pr) calculated. the overall prevalence of t. equi infection was 81.09% (n = 579), with higher prevalence (p < 0.05) in the itaguaí (85.43%) when compared to serrana microregion (76.92%). the g ... | 2011 | 21961755 |