| experimental infection in cavia porcellus by infected amblyomma ovale nymphs with rickettsia sp. (atlantic rainforest strain). | this study describes experimental infection of guinea pigs (cavia porcellus) infested with naturally infected amblyomma ovale nymphs with rickettsia sp. (atlantic rainforest strain), and the capacity of a. ovale nymphs to transmit this bacterium. twenty-six guinea pigs were divided into the following groups: g1, 10 animals infested with uninfected a. ovale nymphs; g2, 10 animals infested with nymphs infected with rickettsia sp. (atlantic rainforest strain); and g3, 6 animals without tick infesta ... | 2018 | 29374783 |
| comparative analysis of germ cells and dna of the genus amblyomma: adding new data on amblyomma maculatum and amblyomma ovale species (acari: ixodidae). | among tick species, members of the subfamily amblyomminae have received special attention, since they serve as vectors for pathogens such as rickettsia spp. and display cryptic species complexes that make their taxonomical classification challenging. amblyomma ovale, amblyomma maculatum, and other species of the genus amblyomma have shown a long history of taxonomic controversies. spermiotaxonomy has proved to be a valuable tool in the solution of systematic conflicts in metazoa that can aid mol ... | 2017 | 28821960 |
| anaplasmataceae agents among wild mammals and ectoparasites in brazil. | anaplasmataceae agents comprise obligate intracellular bacteria that can cause disease in humans and animals. between august 2013 and march 2015, 31 nasua nasua (coati), 78 cerdocyon thous (crab-eating fox), seven leopardus pardalis (ocelot), 110 wild rodents, 30 marsupials, and 42 dogs were sampled in the pantanal wetland, brazil. in addition, ectoparasites found parasitizing the animals were collected and identified. the present work aimed to investigate the occurrence of anaplasmataceae agent ... | 2017 | 29103397 |
| diversity of piroplasmids among wild and domestic mammals and ectoparasites in pantanal wetland, brazil. | piroplasmoses are one of the most prevalent arthropod-borne diseases of animals. the present work aimed to investigate the occurrence of piroplasmid in wild mammals, domestic dogs and ectoparasites in southern pantanal region, central-western brazil. for that purpose, blood or tissue samples from 31 nasua nasua, 78 cerdocyon thous, 7 leopardus pardalis, 42 dogs, 110 wild rodents, and 30 marsupials, and 1582 ticks were submitted to pcr assays for piroplasmid targeting 18srrna and hps70 genes. sev ... | 2017 | 28941935 |
| nellore cattle (bos indicus) and ticks within the brazilian pantanal: ecological relationships. | pantanal is a huge floodplain mostly in brazil, and its main economic activity is extensive cattle raising, in farms characterized by an extremely wildlife-rich environment. we herein describe tick infestations of cattle and of the natural environment in pantanal of nhecolândia in brazil, at areas with and without cattle during both dry and wet seasons. environmental sampling resulted in three tick species: amblyomma sculptum (423 nymphs and 518 adults), amblyomma parvum (7 nymphs and 129 adults ... | 2016 | 26613758 |
| complementary data on four methods for sampling free-living ticks in the brazilian pantanal. | in this study, four methods for sampling free-living ticks that are used in ecological and human tick-bite risk studies were evaluated. cloth dragging, carbon dioxide traps and visual searches and inspection of plant litter on the ground were used in field and forest areas within the brazilian pantanal. among the three tick species collected, amblyomma sculptum predominated, followed by amblyomma parvum and amblyomma ovale. dragging, a cheap and simple technique, yielded the highest numbers of t ... | 2017 | 25517531 |
| infection of amblyomma ovale by rickettsia sp. strain atlantic rainforest, colombia. | our goal was to understand rickettsial spotted fevers' circulation in areas of previous outbreaks reported from 2006 to 2008 in colombia. we herein present molecular identification and isolation of rickettsia sp. atlantic rainforest strain from amblyomma ovale ticks, a strain shown to be pathogenic to humans. infected ticks were found on dogs and a rodent in antioquia and córdoba provinces. this is the first report of this rickettsia outside brazil, which expands its known range considerably. | 2014 | 25090976 |