A checklist of chiggers from Brazil, including new records (Acari: Trombidiformes: Trombiculidae and Leeuwenhoekiidae)

Jacinavicius, Fernando de Castro; Bassini‐Silva, Ricardo; Otranto, Domenico; Pepato, Almir R.; Ochoa, Ronald; Welbourn, Cal; Barros-Battesti, Darci Moraes

doi:10.3897/zookeys.743.22675

Cited by 39 publications

(24 citation statements)

References 66 publications

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“…Moreover, there is no report of congeneric mites infesting T . torquatus in Brazil (see Jacinavicius et al ., 2018). The mean intensity of infestation was 18.7 ± 23.5, corroborating previous reports (see Carvalho et al ., 2006).…”

Section: Resultsmentioning

confidence: 99%

Co-occurrence of Eutrombicula alfreddugesi and Oswaldofilaria chabaudi in Tropidurus torquatus and first report of microfilariae in the chigger mite: possible evidence of a lifecycle pathway?

2021

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While much attention has been paid to vector-borne filariasis, diseases that threaten millions of people in tropical and subtropical countries, the literature on host–parasite associations and transmission strategies of filarial nematodes in wildlife is scarce. Here, we report the co-occurrence of chigger mites (Eutrombicula alfreddugesi) and onchocercid nematodes (Oswaldofilaria chabaudi) parasitizing the lizard Tropidurus torquatus in the State of Minas Gerais, Brazil. Examination of chiggers established, for the first time, the occurrence of microfilariae in trombiculid mites (Trombiculidae). These larvae were morphologically similar to those recovered from adult females of O. chabaudi. The current evidence suggests that chiggers do not play a role in the transmission of filarioid nematodes, but rather act as accidental or dead-end hosts. Nevertheless, considering the polyphagous nature of trombiculid mites, similar to blood-sucking insects involved in the transmission of several infectious diseases, further studies may shed light on the potential role of chiggers as vectors of filarioids.

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Section: Resultsmentioning

confidence: 99%

Co-occurrence of Eutrombicula alfreddugesi and Oswaldofilaria chabaudi in Tropidurus torquatus and first report of microfilariae in the chigger mite: possible evidence of a lifecycle pathway?

2021

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“…larvae were recorded for the first time parasitizing Boana pulchella, this being the second record of a hylid as host of Hannemania sp. in Brazil, since there is only the report of Scinax funereus (Cope, 1874) as host of Hannemania newsteadi Sambon, 1928 in Mato Grosso do Sul (Jacinavicius et al, 2018). However, the low level of infestation indicates that B. pulchella does not represent a host capable of contributing effectively to maintenance of the life cycle of Hannemania sp.…”

Section: Discussionmentioning

confidence: 99%

“…Its singing is quite variable, similar to the "handbell toll" (Langone, 1994). According to Jacinavicius et al (2018)…”

mentioning

confidence: 99%

Occurrence of Hannemania sp. (Acariformes: Leeuwenhoekiidae) larvae in males of Boana pulchella (Anura: Hylidae) from southern Brazil

Costa-Silveira¹,

Silveira-Mascarenhas²,

Loebmann³

2019

Rev.Mex.Biodiv.

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This work records for the first time Boana pulchella as host of larvae of mites of the genus Hannemania in a humid area from southern Brazil. Species of Hannemania are commonly found parasitizing amphibians, being recorded mainly in anurans in the American continent. Although B. pulchella is abundant in southern Brazil, there are no records of parasitism by Hannemania sp. in this species of anuran. In this context, 50 specimens of B. pulchella were examined for the collection of endoparasitic mites, recording for the first time larvae of Hannemania sp. parasitizing this host. ResumenEl propósito de este trabajo es registrar por primera vez a Boana pulchella como huésped de larvas de ácaros del género Hannemania en un área húmeda en el sur de Brasil. Las especies de Hannemania son encontradas comúnmente parasitando anfibios, siendo registradas principalmente en anuros en el continente americano. Aunque B. pulchella es abundante en el sur de Brasil, no hay registros del parasitismo por Hannemania sp. en esta especie de anuro. En este contexto, 50 ejemplares de B. pulchella fueron examinados para recolectar endoparásitos, registrando por primera vez larvas de Hannemania sp. en este hospedero.

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“…The slide-mounted voucher specimens were identified to the genus level using the key by Brennan & Goff (1977), and to the species level based on the original descriptions cited in the Brazilian checklist of chiggers (JACINAVICIUS et al, 2018b). Additional comparisons were made with type series and other specimens deposited in the mite collection of the United State National Museum (USNM), currently housed at the Systematic Entomology Laboratory, Beltsville, Maryland, USA (BARC-USDA-ARS).…”

Section: Morphological Toolsmentioning

confidence: 99%

Molecular detection of Rickettsia genus in chigger mites (Trombidiformes: Trombiculidae) collected on small mammals in southeastern brazilian

Jacinavicius

Bassini‐Silva

Muñoz-Léal

et al. 2019

Rev. Bras. Parasitol. Vet.

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Chiggers are ectoparasites of vertebrates and may cause trombiculiasis or transmit pathogens to their hosts. Specimens collected from rodents and marsupials were morphologically identified as Herpetacarus hertigi, Eutrombicula tinami, Kymocta sp., Quadraseta brasiliensis, Quadraseta falconensis, Quadraseta flochi, Quadraseta mackenziei, Quadraseta pazca, Quadraseta trapezoides, Quadraseta sp., Serratacarus sp., and Trombewingia bakeri. These mites were submitted individually to molecular analyses for the detection of bacteria of the genus Coxiella, Hepatozoon and Rickettsia. Samples were positive to Rickettsia only. Obtained sequences for the gltA (350 pb) and ompA (488 pb) genes were identical to “Candidatus Rickettsia colombianensi”, a species previously detected in ticks. In addition, molecular identification of mites based on 18S rDNA sequences are provided for H. hertigi, Kymocta sp., Q. brasiliensis, Q. pazca, Q. trapezoides, Quadraseta sp., and T. bakeri for the first time. This is the first report of the detection of a Rickettsia sp. in chigger mites collected on rodents in Brazil.

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A checklist of chiggers from Brazil, including new records (Acari: Trombidiformes: Trombiculidae and Leeuwenhoekiidae)

Abstract: A checklist of the family Trombiculidae and Leeuwenhoekiidae is presented, containing 63 species in 30 genera of chiggers from 80 different hosts and 146 localities in Brazil. The type locality and depository are provided, including new locality and host records for the country.

Cited by 39 publications

References 66 publications

Co-occurrence of Eutrombicula alfreddugesi and Oswaldofilaria chabaudi in Tropidurus torquatus and first report of microfilariae in the chigger mite: possible evidence of a lifecycle pathway?

Co-occurrence of Eutrombicula alfreddugesi and Oswaldofilaria chabaudi in Tropidurus torquatus and first report of microfilariae in the chigger mite: possible evidence of a lifecycle pathway?

Occurrence of Hannemania sp. (Acariformes: Leeuwenhoekiidae) larvae in males of Boana pulchella (Anura: Hylidae) from southern Brazil

Molecular detection of Rickettsia genus in chigger mites (Trombidiformes: Trombiculidae) collected on small mammals in southeastern brazilian

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