Ectoparasites of the critically endangered insular cavy, Cavia intermedia (Rodentia: Caviidae), southern Brazil

Regolin, André Luis; Furnari, Nina; Jacinavicius, Fernando de Castro; Linardi, Pedro Marcos; Carvalho-Pinto, Carlos José de

doi:10.1016/j.ijppaw.2014.12.009

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…This species was found in Brasília (Federal District), parasitizing the marsupial Didelphis albiventris (Didelphimorphia) (Goff and Gettinger 1989). In addition, A. hertigi was found on the Archipelago Moleques do Sul (Santa Catarina) parasitizing Cavia intermedia (Rodentia) (Regolin et al 2015). …”

Section: Checklist Of Larvae Chigger Species (In Alphabetical Order) mentioning

confidence: 99%

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

Jacinavicius¹,

Bassini‐Silva²,

Otranto³

et al. 2018

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Section: Checklist Of Larvae Chigger Species (In Alphabetical Order) mentioning

confidence: 99%

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

Jacinavicius¹,

Bassini‐Silva²,

Otranto³

et al. 2018

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“…Vizcachas belong to the Caviomorpha infraorder, which groups the South American Hystrichognathi such as chinchillas, guinea pigs, wild cavies, capybaras, and pacaranas. Various hystrichognathi, either wild or in captivity, have been reported as reservoir hosts of endo and ectoparasites ( Dittmar, 2002 ; de la Cruz et al, 2003 ; Gressler et al, 2010 ; Regolin et al, 2015 ; Jones and Garcia, 2019 ). Among those, Cavia sp and the broad-headed spiny rat Clyomys laticeps , are examples of intermediate hosts of important endemic South American zoonosis such as leishmaniosis and helminthosis ( Cássia-Pires et al, 2014 ; Cardoso et al, 2015 ; Paranaiba et al, 2018 ; Rodrigues et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

First record of an infection by tissue cyst-forming coccidia in wild vizcachas (Lagostomus maximus, Rodentia) of Argentina

Cwirenbaum

Schmidt

Cortasa

et al. 2021

International Journal for Parasitology: Parasites and Wildlife

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Endoparasites of the Sarcocystidae family share the ability to form tissue cysts in their intermediate hosts, ultimately leading to pathogenesis in the definitive hosts that include various mammals, reptiles and birds. In our research on the endocrinology of the female vizcachas ( Lagostomus maximus ), we have found abnormal cystic structures in the ovaries of some individuals. So far, no cases of infection by tissue cyst-forming parasites have been reported in this species. To evaluate whether this autochthonous wild rodent is an intermediate host of an undescribed endoparasite, histological sections from various organs were examined. Pinhead-sized tissue cysts were found in the ovaries, mammary glands, uterus, pituitary, brain, adrenals and spleen, of both pregnant and non-pregnant females. The presence of cysts in the adult brain and embryonic tissue is indicative of the ability of the parasite to cross both the blood-brain and placental barriers. The infected brains exhibited a lower cyst density than that seen in other organs. Regardless of their location in superficial or deep tissue, the cysts were surrounded by a layer of connective tissue. Histologically, the cyst wall consisted of an outer layer of fibroblasts and collagen fibers, and an inner, granular-looking layer composed of host nucleated cells surrounding thousands of spindle-shaped bradyzoites. Outside the cysts, the host cellular structures showed normal appearance. The remarkable morphological similarities between the cysts studied here with those reported in naturally infected rabbits from an area neighboring the one inhabited by the vizcachas point to Besnoitia sp. as a plausible candidate. More studies will be necessary to confirm the identity of the parasite. Nevertheless, this is the first report of L. maximus as an intermediate host for a tissue cyst-forming coccidia.

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Lice community structure infesting Trinomys iheringi (Thomas, 1911) - Ocurrence, sex bias and climatic variables on tropical island

Lourenço

Lacerda

Bergallo

2020

International Journal for Parasitology: Parasites and Wildlife

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Ectoparasites of the critically endangered insular cavy, Cavia intermedia (Rodentia: Caviidae), southern Brazil

Abstract: Graphical Abstract

Cited by 8 publications

References 26 publications

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

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

First record of an infection by tissue cyst-forming coccidia in wild vizcachas (Lagostomus maximus, Rodentia) of Argentina

Lice community structure infesting Trinomys iheringi (Thomas, 1911) - Ocurrence, sex bias and climatic variables on tropical island

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