William Oliveira de Assis

• Master's Student at Universidade Católica Dom Bosco (UCDB)

Introduction Trypanosomatids are parasites widely distributed in nature, parasitizing several host species in single or co-infections. Campo Grande (CG), capital of Mato Grosso do Sul State, is characterized by several green areas and forest fragments where wild mammals have been reported infected by diverse trypanosomatid species. In this study, w...

Dasypus novemcinctus and Euphractus sexcinctus are common armadillo species in the Brazilian Pantanal. Due to their digging habits, they alter the surroundings providing environmental alternatives that can be used by other organisms. We therefore aimed to identify the animal species that utilize the burrows of these armadillos in the Pantanal Wetla...

The Pantanal region, the largest floodplain in the world, has a huge biodiversity and is an important livestock center. Bovine brucellosis has been reported in the region over the last three decades, posing implications for cattle industry as well as for the maintenance of biodiversity. We aimed to investigate the presence of B. abortus S19 vaccine...

Increasing urbanization and consequent habitat fragmentation and loss call for studies of the influence of urbanization on native fauna. South American Coati (Procyonidae: Nasua nasua) live in groups and are common in urban areas of South America. Here, we aimed to understand how coatis occupy and select space, and whether they change their circadi...

Evaluation of free-living mammal physiological responses to natural and anthropogenic stressors constitutes a valuable tool for conservation, especially when it comes to wild mammal species living in anthropized environments. However, studies addressing “normal” physiological parameters are still limited in Brazilian wildlife. In this sense, we acc...

[This corrects the article DOI: 10.3389/fcimb.2022.1050339.].

South American opossums (Didelphis spp.) are definitive hosts of Sarcocystis neurona, Sarcocystis speeri, Sarcocystis lindsayi and Sarcocystis falcatula. In Brazil, diverse studies have demonstrated a high frequency of Sarcocystis falcatula-like in sporocysts derived from opossums, and high genetic diversity has been observed in surface antigen-enc...

Introduction The aim of the present study was to investigate the occurrence of Leishmania infantum in South American coatis inhabiting two forest fragments in Campo Grande, Mato Grosso do Sul, Midwest region of Brazil, an endemic area of human and canine visceral leishmaniasis (VL). Material and methods A total of 110 South American coatis were sa...

This review was performed to gather knowledge about brucellosis in livestock and wildlife in the Brazilian Pantanal, a biome with a huge biodiversity and extensive livestock production. Following the preferred reporting items for narrative review guidelines and using the terms “Brucella” and “Pantanal,” we explored the PubMed, SciELO, Jstor, Scienc...

The genus Bartonella (Rhizobiales: Bartonellaceae) encompasses facultative intracellular Gram-negative alphaproteobacteria that parasitize mainly erythrocytes and endothelial cells, as well as macrophages, monocytes and dendritic cells. Although they can infect numerous mammal species and arthropod vectors worldwide, reports of Bartonella infection...

It has been estimated that 75% of emerging infectious diseases comprise zoonoses, whose majority have free-living animals as reservoirs and are mainly transmitted by arthropod vectors. Although rodents represent important Bartonella reservoirs, there are few studies on the genotypic characterization of Bartonella species commonly found in this taxo...

Urbanization results in loss of natural habitats and, consequently, reduction of richness and abundance of specialist to the detriment of generalist species. We hypothesized that a greater richness of trypanosomatid in Didelphis albiventris would be found in fragments of urban forests in Campo Grande, Mato Grosso do Sul, Brazil, that presented a la...

Azaras’s capuchin monkey (Sapajus cay) is a poorly studied species in ecological aspects. We investigated behavioral activities and diet of a group of S. cay in a remnant of the Brazilian Cerrado. We sought to identify the most frequent behavior that the group engaged in, as well as to verify possible differences in behavioral patterns and diet bet...

Zika virus (ZIKV) was first discovered in 1947 in Uganda but was not considered a public health threat until 2007 when it found to be the source of epidemic activity in Asia. Epidemic activity spread to Brazil in 2014 and continued to spread throughout the tropical and subtropical regions of the Americas. Despite ZIKV being zoonotic in origin, info...

O objetivo do trabalho foi avaliar a influência do sexo, da sazonalidade e de infecções por Trypanosoma cruzi e Trypanosoma evansi nos valores hematológicos de lobinhos (Cerdocyon thous) que habitam o Pantanal Sul-Mato-Grossense. Entre novembro de 2015 e outubro de 2016, foram amostrados 48 lobinhos. Os valores hematológicos mensurados foram as con...

Considered ecologically generalist, Didelphis albiventris is reported as reservoir for different species of parasites, especially Trypanosoma cruzi. However, the knowledge about the influence of T. cruzi on hematological parameters of free-living opossum remains scarce. The present study aimed to evaluate the influence of T. cruzi on hematological...

JAIREMARINHO@HOTMAIL.COM A apresentação patológica de uma doença infecciosa é entendida como o produto de uma intrincada relação envolvendo um agente infeccioso e a consequente resposta imune do hospedeiro. No entanto, os parasitas coocorrem amplamente e as consequências dessas interações são pouco compreendidas. De fato, as coinfecções representa...

Cães domésticos são considerados hospedeiros reservatórios para várias espécies de parasitas transmitidos por vetores artrópodes. Assim, este estudo teve como objetivo avaliar o papel de cães domésticos como hospedeiros mantenedores de Trypanosoma cruzi , T. evansi e Leishmania spp. no assentamento Urucum, localizado próximo à fronteira Brasil-Bolí...

A apresentação patológica de uma doença infecciosa é entendida como o produto de uma intrincada relação envolvendo um agente infeccioso e a consequente resposta imune do hospedeiro. No entanto, os parasitas coocorrem amplamente e as consequências dessas interações são pouco compreendidas. De fato, as coinfecções representam uma área emergente impor...

JAIREMARINHO@HOTMAIL.COM Vários gêneros de flagelados são parasitas sanguíneos de vertebrados, sendo transmitidos por vetores hematófagos. Dentro desse grupo temos os representantes do gênero Trypanosoma com mais de 500 espécies descritas. Acredita-se que os representantes da família Trypanosomatidae surgiram a partir da evolução de formas aquátic...