Life cycle of Ornithodoros mimon (Acari: Argasidae) under laboratory conditions

Landulfo, Gabriel Alves; Pevidor, Luisa Vianna; Sampaio, Janio dos Santos; Luz, Hermes Ribeiro; Onofrio, Valéria Castilho; Faccini, João Luíz Horácio; Barros‐Battesti, Darci Moraes

doi:10.1007/s10493-012-9567-4

Cited by 20 publications

(13 citation statements)

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“…Recently, a few larvae were collected from wild Passeriformes birds in Mato Grosso . This species is aggressive to humans; however, its role in tick-borne diseases is still unknown (BARROS-BATTESTI et al, 2011;LANDULFO et al, 2012;LABRUNA et al, 2014).…”

Section: Ornithodoros Mimon Kohls Clifford Andmentioning

confidence: 99%

Ticks (Acari: Ixodidae) as ectoparasites of Brazilian wild birds and their association with rickettsial diseases

Ogrzewalska

Pintér²

2016

Braz. J. Vet. Res. Anim. Sci.

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Ticks (Acari: Ixodidae) are obligatory hematophagous ectoparasites of a variety of vertebrate hosts and play an important role in the transmission and ecology of infectious pathogens causing diseases in humans and animals worldwide. Sixty-eight species of ticks exist in Brazil, and at least 23 are found parasitizing wild birds. This number is increasing with the advent of new studies highlighting the underestimated role of birds in the life cycle of these arthropods. In South America, many of these ticks are involved in epidemiology of the life-threatening spotted fever diseases caused by bacteria from the genus Rickettsia (Rickettsiales: Rickettsiaceae). The aim of this paper is to present up-to-date knowledge about the bird-tick fauna of Brazil and their association with rickettsioses. The available literature concerning ticks on birds and tick-borne diseases related to these ticks in Brazil has been revised. It could be concluded that birds play a primary role in life cycles of various tick species, especially during immature stages (larvae and nymphs). The best known is a bird-tick fauna from the Atlantic Forest and from Brazilian savannah called Cerrado in southern and central Brazil, respectively. On the other hand, the knowledge about bird tick parasitism from other Brazilian biomes such as the Amazon, Caatinga, Pantanal and Pampas regions is very scarce and requires further study. Moreover, no studies about the role of birds as mobile hosts for spreading ticks to new areas exist, nor has their role in the natural life cycle of Rickettsia been thoroughly examined.Keywords: Ticks. Ectoparasites. Rickettsia. Disease. Birds. Brazil. ResumoOs carrapatos (Acari: Ixodoidea) são ectoparasitas obrigatórias de uma variedade de hospedeiros vertebrados e têm um papel importante na ecologia e transmissão de diversos patógenos causadores de doenças em humanos e animais no mundo todo. No Brasil existem 68 espécies de carrapatos e pelo menos 23 espécies são encontradas parasitando aves silvestres. Esse número tem crescido com o advento de novos estudos ressaltando o papel das aves nos ciclos de vida desses artrópodes. Na América do Sul alguns desses carrapatos estão envolvidos na epidemiologia de doenças graves para o ser humano, como a febre maculosa, causada por bactérias do gênero Rickettsia (Rickettsiales: Rickettsiaceae). O alvo desse artigo é apresentar o estado atual de conhecimento sobre a fauna de carrapatos encontrados em aves no Brasil e as associações estabelecidas com as riquetsioses. A literatura disponível sobre carrapatos em aves e ocorrência de riquétsias foi revisada e pôde ser concluído que aves têm um papel importante nos ciclos de vida de várias espécies de carrapatos, sendo especialmente importantes para os estágios imaturos (larvas e ninfas). A maior parte do conhecimento sabrecai na fauna de carrapatos de aves dos biomas Mata Atlântica e Cerrado no sudeste e centro-oeste do Brasil. Já o conhecimento sobre o parasitismo por carrapatos em aves dos outros biomas: Amazônia, Caatinga, Pantanal...

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Section: Ornithodoros Mimon Kohls Clifford Andmentioning

confidence: 99%

Ticks (Acari: Ixodidae) as ectoparasites of Brazilian wild birds and their association with rickettsial diseases

Ogrzewalska

Pintér²

2016

Braz. J. Vet. Res. Anim. Sci.

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“…The genus Ornithodoros is represented by at least 114 species of ticks, 53 of which are found in the Neotropics and 15 occur in Brazil ( Barros-Battesti et al 2012;Dantas-Torres et al 2012 Except for O. talaje (Schumaker and Barros, 1995) and O. mimon (Landulfo et al 2012), no detailed studies on the life cycle of remaining species have been published. Partial information on the biology of O. brasiliensis has been published by Davis (1952) using guinea pigs as the host and O. rostratus by Brumpt (1915) using dogs and chickens as hosts, Guglielmone and Hadani (1980) using guinea pigs and Venzal and Estrada-Peña (2006) using rabbits.…”

Section: Introductionmentioning

confidence: 99%

Life cycle of Ornithodoros rostratus (Acari: Argasidae) under experimental conditions and comments on the host-parasite relationship in the Pantanal wetland region, Brazil

et al. 2013

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The genus Ornithodoros is represented by 15 species in Brazil, on which no detailed life cycle studies have been published, except for O. talaje and O. mimon. The aim of the present study was to evaluate life cycle parameters of O. rostratus based on ticks collected in the Pantanal wetland region of the state of Mato Grosso do Sul, Brazil, using domestic rabbits as experimental hosts. The periods of pre-attachment and feeding of the larvae lasted an average of 39 min (range 15-76 min). Five or six nymphal instars were found. The emergence of adults started with N3 in the following sequence: N3-two males; N4-13 males; N5-three males and 16 females; and N6-two females. Mean weight of N4 that molted to males was 31.7 ± 13.6 mg, whereas mean weight of N5 that molted to females was 100.1 ± 36.2 mg. The overall sex ratio was 1:1. Oviposition lasted 14 days, with a sharp decline beginning with the 7th day. The overall duration of the life cycle of O. rostratus ranged from approximately 66 to 136 days. Comments on the tick-host relationship in the Pantanal region are offered.

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“…Decades later, O. mimon larvae were reported in Argentinean and Brazilian bats (Venzal et al 2004, BarrosÐBattesti et al 2006. More recently, Barros-Battesti et al (2011) described the adult stages, and Landulfo et al (2012) evaluated the life cycle of O. mimon based on specimens collected on the ceiling and walls of a household in the state of São Paulo, southeastern Brazil, where this tick was reported to be aggressive to humans in the house. To our knowledge, there have been no additional reports of O. mimon.…”

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New Records and Human Parasitism byOrnithodoros mimon(Acari: Argasidae) in Brazil

et al. 2014

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The bat tick Ornithodoros mimon Kohls, Clifford & Jones is currently known by only few reports in Bolivia, Uruguay, Argentina, and the state of São Paulo in southeastern Brazil. Here, we expand the distribution of O. mimon in Brazil to the states of Minas Gerais (southeastern region), Goiás (central-western), Pernambuco, and Rio Grande do Norte (northeastern). Ticks were collected on human dwellings, where there had been repeated complains of tick bites on persons during the night. Tick bites were generally followed by intense inflammatory reactions that lasted for several weeks at the bite site. Bats and opossums were reported to inhabit the attic of the infested houses. In addition, a free-ranging opossum (Didelphis albiventris Lund) trapped in Rio Grande do Norte was found infested by argasid larvae. Based on morphological and/or molecular analysis, all ticks were identified as O. mimon. From one of the sites (Tiradentes, state of Minas Gerais), 20 field-collected nymphs were tested by a battery of polymerase chain reaction protocols targeting tick-borne microorganisms of the genera Babesia, Hepatozoon, Rickettsia, Borrelia, Anaplasma, Ehrlichia, and Coxiella; no tick specimen was found infected by any of these microorganism genera. The current study expands northwards the distribution of O. mimon, which has been shown to be very harmful to humans because of the intense inflammatory response that usually occurs after tick bites.

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Life cycle of Ornithodoros mimon (Acari: Argasidae) under laboratory conditions

Cited by 20 publications

References 22 publications

Ticks (Acari: Ixodidae) as ectoparasites of Brazilian wild birds and their association with rickettsial diseases

Ticks (Acari: Ixodidae) as ectoparasites of Brazilian wild birds and their association with rickettsial diseases

Life cycle of Ornithodoros rostratus (Acari: Argasidae) under experimental conditions and comments on the host-parasite relationship in the Pantanal wetland region, Brazil

New Records and Human Parasitism byOrnithodoros mimon(Acari: Argasidae) in Brazil

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