Allergic Dermatitis in Pêga Breed Donkeys () Caused by Bites in the Amazon Biome, Pará, Brazil.

An allergy to bites from (Diptera: Ceratopogonidae) occurs because of a hypersensitivity reaction caused by the inoculation of insect salivary antigens during the bite, resulting in immune-mediated dermatitis. To the best of our knowledge, no previous studies have focused on allergic dermatitis in donkeys in Brazil. Therefore, this study aimed to describe the epidemiological, clinicopathological, and therapeutic aspects of allergic dermatitis in donkeys and to identify the insects involved in its epidemiology.

Molecular survey of potentially pathogenic microorganisms in ticks collected from coatis (Nasua nasua) in Iguaçu National Park, Atlantic Forest biome, southern Brazil.

Human contact with wild animals in synanthropic habits is often mediated by arthropod vectors such as ticks. This is an important method of spreading infectious agents that pose a risk to human health. Thus, this study aimed to molecularly detect Ehrlichia spp.

Serological prevalence of Toxoplasma gondii infection in cats (Belém, Pará, Brazil).

We evaluated the prevalence of anti-Toxoplasma gondii antibodies in the serum samples collected from domestic cats in Belém, Pará, Brazil. We also correlated the presence of T. gondii antibodies with environmental variables and cat-owner habits.

Molecular characterization of the msp1 α AmRio1 strain of Anaplasma marginale in calves and experimentally infected ticks.

This study aims to evaluate the infection's clinical parameters and genetic diversity of msp1α of the AmRio1 strain in acute and chronic infections in cattle and ticks. A calf experimentally infected with the A. marginale AmRio1 strain was monitored during acute infection, and the presence of the msp1α gene was verified in the semi-nested polymerase chain reaction (PCR) during the acute and persistent phases of infection.

Ticks in wild animals at a resort and the first documentation of Amblyomma sculptum infesting Emu (Dromaius novaehollandiae).

The study aimed to identify species of ticks present in the environment and among captive animals, in Mangaratiba, Rio de Janeiro, Brazil. Ticks were isolated from captive animals by manual examination and free-living ticks in the environment were captured using the flannel drag technique. A total of 91 ticks were obtained (51 adults, 25 nymphs and 15 larvae).

Morphological, molecular and phylogenetic characterization of Borrelia theileri in Rhipicephalus microplus.

This study aimed to perform a morphological, molecular and phylogenetic characterization of Borrelia theileri obtained from infected Rhipicephalus microplus in Brazil. Fifty engorged R. microplus females from cattle in the municipality of Seropédica, Rio de Janeiro, were analyzed for spirochetes by hemolymph smear.

Filarial nematodes with zoonotic potential in ring-tailed coatis (Nasua nasua Linnaeus, 1766, Carnivora: Procyonidae) and domestic dogs from Iguaçu National Park, Brazil.

Iguaçu National Park, which contains the largest remnant of Atlantic Forest in southern Brazil and Iguaçu Falls as one of its main visiting points, is a year-round attraction for thousands of domestic and international tourists. Ring-tailed coatis are generalist, opportunistic carnivores that benefit from human association. These animals are the most abundant carnivores in this park, where they come into close contact with tourists and the resident population around the park.

Trypanosoma cruzi infection in captive Neotropical primates in the Brazilian Amazon.

The aim of this study was to detect the infection by Trypanosoma cruzi in captive Neotropical primates in the Brazilian Amazon. From February 2013 to July 2014, 112 blood samples were collected from Neotropical primates from the Amazonas, Amapá, and Pará States, north of Brazil. The subjects belonged to the families Cebidae (N = 59), Atelidae (N = 41), Callitrichidae (N = 5), Pitheciidae (N = 4), and Aotidae (N = 3).