Atypical case of recurrent otitis with polyp formation in the ear canal associated with lagochilascariasis in a domestic feline in Brazil.

Lagochilascariasis is a neglected zoonosis that affects domestic and wild mammals, including humans, and can form nodules, especially on the neck. Although emerging, it is considered a rare disease in the Americas and, therefore, the objective was to report an atypical case of recurrent otitis with the formation of polyps in the ear canal in a domestic feline associated with lagochilascariasis in Brazil. A cat had a purulent exudate in one of her ears and responded poorly to treatments.

Survey of parasitic fauna data from wild animals through coproparasitological diagnosis in Southern Brazil.

Background: The proximity between people and their domestic animals with wild animal populations can result in the spread of diseases with a significant impact on public health. Infection by parasites in wildlife is considered an important bioindicator of the current state of ecosystems, and studying the epidemiology of these infections is essential for a better understanding of natural foci. However, research on parasites in southern Brazil, especially in Rio Grande do Sul (RS), is considered incipient.

Diagnosis of spp. in ruminants at Southern Brazil.

spp. is a flagellated protozoan that parasitizes the small intestine of various mammals, birds, and amphibians, being transmitted via the fecal-oral route. Giardiasis is one of the most prevalent parasitic diseases in both developed and developing countries, with a prevalence of 0,1-5% and 20-30%, respectively, and is correlated with poor hygiene practices, such as irregular handwashing, which consequently contaminates food when handled.

New records of endoparasites and ectoparasites in free-living road-killed wild animals in the Pampa biome, Southern Brazil.

Wild animals host a wide variety of parasites, and the disorders caused by these parasites are among the most prevalent and significant infectious diseases affecting wildlife. The investigation of parasitic fauna is crucial for the conservation of wild animals, domestic populations, and humans. Therefore, the aim of the study was to survey endo- and ectoparasites in free-living wildlife in southern Brazil.

First record of Contracaecum australe (Nematoda: Anisakidae) infecting Neotropic cormorant (Phalacrocorax brasilianus) (Aves: Phalacrocoracidae) in southern Brazil with a phylogenetic analysis.

Phalacrocorax brasilianus (Gmelin, 1789) (Aves: Phalacrocoracidae) is one of the few piscivorous birds inhabiting freshwater and saline environments, being considered one of the most abundant aquatic species in Rio Grande do Sul, Brazil, especially along the state's coastline. It is known that birds are hosts to a wide variety of disease-causing agents, among them, nematodes of the Contracaecum (Anisakidae) have a large number of recognized species. However, little is still known about the occurrence of these parasites in the Southern region of Brazil.

Absence of Leishmania spp. DNA in road-killed wild mammals in Southern Brazil.

Leishmaniasis are neglected diseases transmitted by vectors that affect domestic and wild animals, including humans. Due to its incidence and lethality, this zoonosis is a worrying public health problem, making it essential to identify all links in the transmission chain. Infection of wild mammals by Leishmania spp.

Description of the parasitic fauna of a specimen of at Rio Grande do Sul.

is considered the most common marsupial in Rio Grande do Sul. With omnivorous and synanthropic habits, it can serve as a host to various parasites, playing an important role in maintaining their biological cycle. Despite being a widespread and abundant species, it has a relatively little-known parasitic fauna.

(Siphonaptera, Pulicidae) parasitizing White-eared opossum () at Southern Brazil - Case report.

is a marsupial with synanthropic habits, whose contact with domestic animals and humans is increasing. They are considered potential disseminators of diseases, present as definitive hosts or reservoirs of various pathogenic agents. The present study aim to report, for the first time, the parasitism by in in Rio Grande, Southern Rio Grande do Sul state, Brazil.

An indirect ELISA for Neosporosis: Associating recombinant Neospora caninum proteins NcSRS2 and NcSAG1.

Neosporosis is caused by infection with the protozoa Neospora caninum. It manifests as various neurological symptoms and is considered as one of the main causes of abortion in cattle, and induces uncommon congenital infection in sheep. The standard diagnosis is based on indirect immunofluorescence (IFI); however, cross-reactivity with other protozoa proteins is common.

Comparison of three larval bioassays to evaluate susceptibility of Rhipicephalus (Boophilus) microplus to amitraz.

Field samples of Rhipicephalus (Boophilus) microplus from the state of Rio Grande do Sul, Brazil, were assessed using the following methods: larval packet test (LPT), larval immersion test (LIT) and syringe immersion test (SIT). The following parameters were determined for each population and for the Mozo susceptible reference strain: lethal concentration for 50% (LC50) with its 95% confidence interval (95% CI), regression line slope and resistance ratio (RR). Using the LPT, only one population was susceptible to amitraz, presenting a RR of 1.

Transplacental transmission of Anaplasma marginale in beef cattle chronically infected in southern Brazil.

In this study, we have investigated the incidence of transplacental transmission of Anaplasma marginale in chronically infected cows with no history of acute anaplasmosis during gestation. In addition, we evaluated various techniques for detection of transplacental transmission of A. marginale.

Toxocara spp. seroprevalence in sheep from southern Brazil.

Visceral toxocariasis is a neglected parasitic zoonosis that occurs through the ingestion of embryonated Toxocara spp. eggs. A wide range of animal species can act as paratenic hosts for this ascarid.

[In vitro analysis of amitraz efficacy against Rhipicephalus (Boophilus) microplus (Canestrini, 1887) populations of southern region of Rio Grande do Sul state].

Commercial formulation of the amitraz is the most used acaricide in the southern region of Rio Grande do Sul State, however scientific data about the efficacy of these products in this region are sparse. The aim of the present study was to evaluate the frequency of R. (B.

[Helminths of Pampas fox, Pseudalopex gymnocercus (Fischer, 1814) and of Crab-eating fox, Cerdocyon thous (Linnaeus, 1766) in the South of the State of Rio Grande do Sul, Brazil].

Forty wild canids were captured by live trap at Municipalities of Pedro Osorio and Pelotas in Southern of the State of Rio Grande do Sul and they were transported to the Parasitology Laboratory at the Universidade Federal de Pelotas. After they were posted, segments of intestinal, respiratory and urinary tracts and liver were separated and examined. Animal skulls were used for taxonomic identification.

[Risk factors and prevalence of antibodies anti-Neospora caninum in urban and rural dogs from Rio Grande do Sul, Brazil].

Serum samples from 339 dogs from rural (beef and dairy farms) and urban areas of Municipality of Pelotas, RS, were tested by indirect fluorescent antibody test to verify the presence of antibodies anti-Neospora caninum. Data from dogs took part of an epidemiologic questionnaire to identify possible risk factors associated with the seropositivity. Antibodies anti-N.

Canine infection by rickettsiae and ehrlichiae in southern Brazil.

This study evaluated the infection caused by Rickettsia and Ehrlichia agents among dogs in southern Brazil. A total of 389 dogs were tested by the indirect immunofluorescence assay (IFA) for Rickettsia rickettsii, Rickettsia parkeri, Rickettsia amblyommii, Rickettsia rhipicephali, Rickettsia bellii, and Ehrlichia canis. Overall, 42.