| ticks (acari: ixodidae) parasitizing humans in an atlantic rainforest reserve of southeastern brazil with notes on host suitability. | while conducting projects on ticks from deer and on tick ecology in animal trails in an atlantic rainforest reserve in southeastern brazil, researchers of our group were bitten by ticks several times. some of these episodes were recorded. three species of adult ticks attached to humans: amblyomma brasiliense aragão, amblyomma incisum neumann, and amblyomma ovale koch. eight nymphal attachments with engorgement on humans were recorded. from these, six molted to adults of a. incisum, one to an adu ... | 2006 | 16900313 |
| ovary and oocyte maturation of the tick amblyomma brasiliense aragão, 1908 (acari: ixodidae). | this study describes the ovary anatomy and dynamics of oocytes maturation process of amblyomma brasiliense ticks. the ovary is of panoistic type lacking nurse and follicular cells. this organ consists of a single continuous tubular structure comprising a lumen delimited by the ovarian wall. oocytes of this tick species are classified into five stages (i-v) and described based on cytoplasm appearance, presence of germ vesicle, yolk granules aspects, and chorium deposition. oocytes of various size ... | 2010 | 19833523 |
| survey of ticks (acari: ixodidae) and their rickettsia in an atlantic rain forest reserve in the state of são paulo, brazil. | the current study investigated the occurrence of ticks and their rickettsiae in the serra do mar state park, which encompasses one of the largest atlantic rain forest reserves of brazil. from july 2008 to june 2009, a total of 2439 ticks (2,196 free living and 243 collected on hosts) was collected, encompassing the following 13 species: amblyomma aureolatum (pallas), amblyomma brasiliense aragao, amblyomma dubitatum neumann, amblyomma fuscum neumann, amblyomma incisum neumann, amblyomma longiros ... | 2010 | 20939390 |
| vector potential and population dynamics for amblyomma inornatum. | we studied the natural life cycle of amblyomma inornatum and its vector potential in south texas. this tick is distributed throughout south texas and most of central america. a. inornatum represented 1.91% of the ticks collected by carbon dioxide traps during a study of free-living ticks in the tamaulipan biotic province in south texas. the life cycle of a. inornatum in south texas showed a clear seasonal pattern consistent with one generation per year. nymphs emerged in the spring with a peak i ... | 2015 | 25881916 |
| ticks infesting humans in northern misiones, argentina. | this work presents records of ticks infesting humans in northern misiones province, argentina. also, notes on potential transmission of tick-borne pathogens are included. a total of 282 ticks attached to researchers were collected and identified by their morphological characters. eight tick species were found: amblyomma brasiliense, amblyomma coelebs, amblyomma dubitatum, amblyomma incisum, amblyomma ovale, haemaphysalis juxtakochi, rhipicephalus sanguineus and rhipicephalus microplus. some of t ... | 2016 | 27135846 |
| ticks (acari: ixodidae) identified from prey-predator interactions via faecal analysis of brazilian wild carnivores. | between july 2008 and may 2010, we conducted a trophic study on 12 brazilian wild carnivore species through their faecal analysis in a silvicultural landscape at angatuba municipality, southern são paulo state. predator faeces was identified by morphology, predator hair, and surrounding tracks; prey remnants within faeces were used for morphological identification of the prey. among the recovered ectoparasites, there were 89 specimens of six tick species in 21 (4.0%) out of 523 analysed samples. ... | 2015 | 25702204 |
| free-living ixodid ticks in an urban atlantic forest fragment, state of rio de janeiro, brazil. | as a consequence of the importance of ticks in forests in protected areas, was conducted survey of species of free-living ticks in the natural park municipal curió, state of rio de janeiro, brazil. monthly samples were taken by dragging method, dry ice traps and visual search in two transects. adults and nymphs of amblyomma cajennense (n= 147), amblyomma brasiliense (n= 4) and amblyomma parvum (n= 1) were collected. this is the first occurrence of a. parvum in the state. no correlation was found ... | 2014 | 25054511 |
| morphological description of amblyomma brasiliense aragão, 1908 (acari: ixodidae) larvae and nymphs. | the immature stages of neotropical ticks are poorly known and in many cases have not been described. tis work presents a morphological description of amblyomma brasiliense larvae (f1) and a redescription of nymphs (f1). a. brasiliense is reported as one of the most aggressive ticks to humans in brazil. immature ticks obtained from a laboratory colony initiated from adult specimens collected in the parque estadual intervales (24 degrees 18 degrees s and 48 degrees 24' w), são paulo, brazil, were ... | 2009 | 19772770 |
| biological aspects of amblyomma brasiliense (acari: ixodidae) under laboratory conditions. | although amblyomma brasiliense aragão 1908 has been reported as one of the most aggressive ticks to humans in brazil, information about the biology of this tick species is virtually inexistent. this work reports data on the life cycle of a. brasiliense fed on rabbits and pigs and maintained in an incubator at 20 degrees c, 90% rh and 12 h of light for off-host development. tick yield of adult females fed on pigs and rabbits was 81.2% and 58.3%, respectively. females fed on pigs had mean engorgem ... | 2008 | 18188669 |