Third-stage larvae of the enoplid nematode<i>Dioctophyme renale</i>(Goeze, 1782) in the freshwater turtle<i>Trachemys dorbigni</i>from southern Brazil

Mascarenhas, Carolina Silveira; Müller, Gertrud

doi:10.1017/s0022149x14000364

Cited by 22 publications

(18 citation statements)

References 26 publications

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“…In the municipality of Pelotas, turtles and freshwater fish have been recorded as presenting third-stage larvae of D. renale. In the turtle species Trachemys dorbigni (Testudines: Emydidae), the prevalence was 87.5% (n = 32 examined) and the mean intensity of infestation was 13.9 larvae/host (MASCARENHAS & MÜLLER, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Mascarenhas & Müller (2015) commented that the high prevalence of larvae in turtles in the municipality of Pelotas might be related to the presence of parasitized domestic dogs, which spread eggs through their urine, thus contaminating urban water bodies that turtles and oligochaetes cohabit. The number of cases of dioctophymosis in dogs recorded in the present study corroborates the hypothesis of Mascarenhas & Müller (2015). It is believed that there is a high rate of occurrence of this parasitosis in this municipality given that the dog population in Pelotas is approximately 66,723 (46,706 semi-domestic, 6,672 street and 13,345 domestic dogs) (PELOTAS, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Dioctophyme renale (Nematoda: Enoplida) in domestic dogs and cats in the extreme south of Brazil

Rappeti

Mascarenhas

Perera

et al. 2016

Rev. Bras. Parasitol. Vet.

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Dioctophyme renale is a zoonotic nematode that parasites the kidneys of wild and domestic carnivores, and it has been reported frequently in Brazil. The aim here was to register the number of cases of dogs and cats diagnosed with dioctophymosis by necropsy (1981 to 2014) and ultrasound examination (2010 to 2015) in Pelotas-RS. In this context, a survey was conducted on dioctophymosis cases diagnosed at the Veterinary Pathology Laboratory (LPV) and Veterinary Clinical Hospital (HCV) of the Federal University of Pelotas (UFPel), and at a specialist veterinary imaging diagnostics clinic. In total, 95 cases were registered. The high series of the disease in dogs can be related to the presence of a large number of stray and semi-domestic dogs in the city, and also due to the ingestion of intermediate hosts of D. renale parasitized with the infective larvae. Thus, it can be concluded that Pelotas is a city with favorable conditions for the occurrence of dioctophymosis with high rate of disease in recent years.Keywords: Giant kidney worm, dioctophymosis, nematode, parasitosis, urban zone. ResumoDioctophyme renale é um nematódeo zoonótico que parasita principalmente o rim de carnívoros silvestres e domésticos, e tem sido relatado com frequência no Brasil. Objetivou-se registrar o número de casos de cães e gatos diagnosticados com dioctofimatose por necropsia (1981 a 2014) e exame ultrassonográfico (2010 a 2015) em Pelotas-RS. Nesse contexto, foi realizado um inquérito de casos de dioctofimatose em animais de companhia no Laboratório de Patologia Veterinária (LPV) e no Hospital de Clínicas Veterinária (HCV) da Universidade Federal de Pelotas (UFPel), e em uma clínica veterinária especializada em diagnóstico por imagem, totalizando 95 casos registrados. A elevada casuística da doença em cães pode estar relacionada à presença de um grande número de cães errantes e semi-domiciliados na cidade, e também devido à ingestão dos hospedeiros intermediários de D. renale parasitados com a larva infectante. Assim, conclui-se que Pelotas é uma cidade propícia para a ocorrência de dioctofimatose, com elevada casuística da doença nos últimos anos.Palavras-chave: Verme gigante do rim, dioctofimatose, nematoide, parasitose, zona urbana.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dioctophyme renale (Nematoda: Enoplida) in domestic dogs and cats in the extreme south of Brazil

Rappeti

Mascarenhas

Perera

et al. 2016

Rev. Bras. Parasitol. Vet.

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“…Otters inhabit rivers and lakes and feed mainly on crustaceans and fish, but may be more general depending on the environment they are in (Pardini 1998, Quintela et al 2012. Studies conducted in the region have reported that food items, such as fish and other vertebrates, in the diet of Lontra longicaudis (Quintela et al 2012) are parasitized by D. renale larvae (Mascarenhas & Müller 2015, Mascarenhas et al 2016. D. renale life cycle requires the participation of aquatic organisms and fish, considered paratenic hosts of this parasite (Measures 2001).…”

Section: Discussionmentioning

confidence: 99%

Lontra longicaudis infected with canine parvovirus and parasitized by Dioctophyma renale

et al. 2018

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This study describes a case of parvovirus infection in a river otter (Lontra longicaudis) assisted at the Wildlife Rehabilitation Center and Wildlife Screening Center, Federal University of Pelotas (UFPel), Rio Grande do Sul state, Brazil. Clinical signs included apathy, dark and fetid diarrhea, and crusted lesions on the palmar pads of the fore and hind limbs. The animal died after undergoing support treatment with antibiotics, anti-inflammatory, and fluid therapy. At necropsy, the intestines were reddened and edematous and the right kidney was diminished by one third of its normal size and covered with whitish, spongy material. A female Dioctophyma renale was found free in the abdominal cavity. Histologically, dilatation of the intestinal crypts and fusion and blunting of the intestinal villi were observed. In addition, moderate, multifocal lymphocytic enteritis with lymphoid depletion in Peyer’s patches and mesenteric lymph nodes were present. Immunohistochemistry with anti-canine parvovirus monoclonal antibody (anti-CPV) was strongly positive in the bone marrow cells and enterocytes of the intestinal crypts, confirming the diagnosis of parvovirus infection. The peritoneum on the right kidney was expanded with a cuboidal cell border, forming multiple papillary projections associated with eggs of D. renale and severe inflammatory infiltrate (giant cells, macrophages, lymphocytes, eosinophils, and plasma cells). Areas of necrosis and mineralization were also observed. Due to fragmentation and degradation of its natural habitat, the otter approached the urban area and was contaminated with the virus, which is hosted and disseminated by domestic animals. Infection with D. renale can be associated with the large population of parasitized domestic animals, which eliminate the helminth eggs through urine, contaminating the environment where the parasite intermediate and paratenic hosts co-inhabit. The diseases of these animals can be a decline factor of wild populations that inhabit the region and are an alert to spillover risk.

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“…In Brazil, larvae of D. renale have been found in anurans (PEDRASSANI et al, 2009), fish (ABDALLAH et al, 2012;MASCARENHAS et al, 2016), and freshwater turtles (MASCARENHAS & MÜLLER, 2015;MASCARENHAS et al, 2017). Three of these cases of D. renale infection affecting aquatic organisms in Brazil (MASCARENHAS & MÜLLER, 2015;MASCARENHAS et al, 2016;MASCARENHAS et al, 2017) originated from the southern region of the State of Rio Grande do Sul, where several cases of dioctophymatosis have been diagnosed in dogs (RAPPETI et al, 2017). The present report documents the occurrence of D. renale larvae in a previously unreported host from southern Brazil.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Dioctophyme renale larvae (Goeze, 1782) (Nematoda: Enoplida) in a new host from southern Brazil

Mascarenhas

Pereira

Müller

2018

Rev. Bras. Parasitol. Vet.

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Dioctophymatosis is caused by the giant kidney worm Dioctophyme renale which occurs in dogs, cats, and wild mammals. In Brazil, the disease has been diagnosed in dogs from several states around the country. In the present study, the occurrence of D. renale larvae in snakes from southern of Brazil is reported. Three specimens of Philodryas patagoniensis (Serpentes: Dipsadidae) (common names in Brazil: “parelheira”, “papa-pinto”) roadkill in the county of Capão do Leão, State of Rio Grande do Sul, southern Brazil, were necropsied. Two third-stage larvae of D. renale were found in the coelomic cavity of P. patagoniensis. This study reveals a new host for D. renale larvae in the southern region of the State of Rio Grande do Sul, Brazil. This particular geographic area of the country has stood out as several cases of D. renale infection have been reported in a number of vertebrates from this region including domestic dogs and cats and wild animals such as carnivores, fish, and freshwater turtles.

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Third-stage larvae of the enoplid nematodeDioctophyme renale(Goeze, 1782) in the freshwater turtleTrachemys dorbignifrom southern Brazil

Cited by 22 publications

References 26 publications

Dioctophyme renale (Nematoda: Enoplida) in domestic dogs and cats in the extreme south of Brazil

Dioctophyme renale (Nematoda: Enoplida) in domestic dogs and cats in the extreme south of Brazil

Lontra longicaudis infected with canine parvovirus and parasitized by Dioctophyma renale

Occurrence of Dioctophyme renale larvae (Goeze, 1782) (Nematoda: Enoplida) in a new host from southern Brazil

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