| monitoring of resistance or susceptibility of adults and larvae of amblyomma cajennense (acari: ixodidae) to synthetic acaricides in goiás, brazil. | amblyomma cajennense or the cayenne tick is a three-host ixodid tick species of low parasitic specificity that is the principal vector of brazilian spotted fever. the primary objective of this study was to evaluate the possible development of resistance by adult specimens of a. cajennense to deltamethrin, a synthetic pyrethroid insecticide and the principal miticide/acaricide commercially available in the region. the second objective was to monitor the susceptibility and/or resistance of larvae ... | 2010 | 20976616 |
| tick fauna from two locations in the brazilian savannah. | the cerrado is brazil's tropical savannah, which is arguably under greater threat than the amazon rainforest. the cerrado biome of tropical south america covers about 2 million km(2) and is considered a biodiversity hot spot which means that it is especially rich in endemic species and particularly threatened by human activities. the cerrado is increasingly exposed to agricultural activities which enhance the likelihood of mixing parasites from rural, urban and wildlife areas. information about ... | 2007 | 17828441 |
| ticks associated with armadillo (euphractus sexcinctus) and anteater (myrmecophaga tridactyla) of emas national park, state of goias, brazil. | this study was conducted in october 1998 and november 1999 in the emas national park (131,868 ha), a savanna-type cerrado region situated in the far south of goias state, brazil, near the geographic center of south america (15 degrees -23 degrees s; 45 degrees -55 degrees w). animals were captured with the aid of nets and anesthetized (15 mg/kg ketamine + 1 mg/kg xylasine) in order to collect ticks for identification and to establish laboratory colonies. they included giant anteaters (myrmecopha ... | 2002 | 12381607 |