Joares A May-Júnior

Joares A May-Júnior
Universidade Federal do Rio Grande do Sul | UFRGS · Departamento de Medicina Veterinária Preventiva

Master Veterinary Epidemiology

About

46
Publications
17,101
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
537
Citations
Introduction
I have interest about wildlife epidemiology and conservation. I have been envolve d with wild carnivores projects: jaguars, maned wolves, pumas and small carnivores from South America. I work on captures and diseases evaluation.
Additional affiliations
February 2012 - present
Universidade do Sul de Santa Catarina (Unisul)
Position
  • Professor
October 2011 - present
Onçafari
Position
  • Medical Professional
Description
  • Conservation and Ecotourism project of jaguars in Pantanal
January 2009 - March 2011
University of São Paulo
Position
  • Master's Student
Education
August 2009 - April 2011
University of São Paulo
Field of study
  • Epidemiology
August 1992 - July 1997

Publications

Publications (46)
Article
Full-text available
Diante dos níveis crescentes de perda e modificação de habitat, conhecer os fatores ambientais que influenciam o uso do espaço por grandes carnívoros é crucial para esforços de conservação efetivos. Apesar da crescente literatura investigando o efeito da luminosidade da luasobre felídeos topo de cadeia, tais efeitos sobre a onça-pintada (Panthera o...
Article
Full-text available
Large terrestrial carnivores have undergone some of the largest population declines and range reductions of any species, which is of concern as they can have large effects on ecosystem dynamics and function.1 , 2 , 3 , 4 The jaguar (Panthera onca) is the apex predator throughout the majority of the Neotropics; however, its distribution has been red...
Article
Habitat loss and fragmentation are important threats to carnivores worldwide and are especially intense for large predators. Jaguars have been extirpated from over half of their original distribution, and few regions still maintain large populations. The Pantanal is among the best examples of such regions and can be used to better understand severa...
Article
Full-text available
Dermatobia hominis is a parasite widely distributed in neotropical regions. The parasitic phase of the cycle is characterized by the formation of a subcutaneous nodule in the host, which can promote infestation by other dipterans and skin infections. The aim of this report is to register parasitism by D. hominis in free-ranging Panthera onca captur...
Article
Full-text available
To evaluate the feasibility of reintroduction as a tool for conservation of the jaguar Panthera onca , we adapted the IUCN soft release protocol to reintroduce two jaguars in the southern Pantanal, Brazil. After being kept at rescue centres for 13 months, the jaguars were moved to a 1-ha enclosure with native vegetation on a 53,000 ha ranch in the...
Article
1. The study of free‐living felids requires the capture of individuals from the wild to collect biological samples and to equip them with GPS‐satellite collars for telemetry monitoring. The traditional methods used by researchers to capture wild felids are box traps and trained hounds, both of which have disadvantages. 2. We present the description...
Preprint
Full-text available
The range-wide management of the jaguar (Panthera onca) depends upon maintaining core populations connected through multi-national, transboundary cooperation, which is dependent upon understanding the movement ecology and space use of jaguars throughout their range. Using 117 telemetry trajectories from 12 ecoregions, we examined the landscape-leve...
Article
Full-text available
Satellite telemetry is an increasingly utilized technology in wildlife research, and current devices can track individual animal movements at unprecedented spatial and temporal resolutions. However, as we enter the golden age of satellite telemetry, we need an in-depth understanding of the main technological, species-specific and environmental fact...
Data
R-code for boosted beta regression (Fix acquisition rate). (R)
Data
Covariate partial effects on the variability of the fix acquisition rate. (PDF)
Data
Tagged individuals per species. (PDF)
Data
Covariate partial effects on the variability of the Overall fix success rate. (PDF)
Data
Trends in observed data. (PDF)
Data
Global dataset for boosted beta regressions. (CSV)
Data
Description of data fields in S1 Data. (CSV)
Data
Satellite telemetry articles published. (PDF)
Data
Distribution of response variables and covariates. (PDF)
Data
Unit purchase and operation costs. (PDF)
Data
R-code for boosted beta regression (Overall fix success rate). (R)
Data
Standardized data collection questionnaire. (PDF)
Data
Satellite telemetry evaluations. (PDF)
Article
Full-text available
The Cerrado Biome is the second largest in Brazil covering roughly 2 million km², with varying features throughout its area. The Biome is endangered but it is also source of animal species for rural, green urban and degraded rainforest areas. Ticks are among Cerrado species that establish at anthropogenic sites and although information about them i...
Article
Full-text available
The field of movement ecology has rapidly grown during the last decade, with important advancements in tracking devices and analytical tools that have provided unprecedented insights into where, when, and why species move across a landscape. Although there has been an increasing emphasis on making animal movement data publicly available, there has...
Article
Full-text available
The Pantanal is the largest inland wetland in the world and is under increasing anthropogenic threats, including long-term regionally intensive gold mining practices. Gold mining activities are known to cause the release of harmful pollutants such as mercury (Hg) to the surrounding environment. Jaguars (Panthera onca (Linnaeus, 1758)) are apex pred...
Article
Full-text available
Accurately estimating home range and understanding movement behavior can provide important information on ecological processes. Advances in data collection and analysis have improved our ability to estimate home range and movement parameters, both of which have the potential to impact species conservation. Fitting continuous-time movement model to...
Data
List of the GPS collared jaguars with information on Biome, animal ID, sex and estimated age (years), equipment used (tag brand and satellite system), sampling protocol (time interval between locations), period of data collection, coordinator and institution. (DOCX)
Article
Full-text available
Infanticide is an antagonistic behavior that may provide an evolutionary benefit for the perpetrator. Cases of infanticide have rarely been reported in Neotropical carnivores. The objective of this study was to provide empirical evidence of infanticide in a local jaguar (Panthera onca) population in the Brazilian Pantanal. We present infanticide da...
Article
Este estudo investigou a exposição de onças-pintadas de vida livre a agentes virais selecionados em duas unidades de conservação federais no Pantanal de Mato Grosso, Brasil. Para a análise desses agentes virais, a maioria de caráter zoonótico, foram utilizados métodos sorológicos e moleculares. Nenhuma das onze onças-pintadas examinadas foi positiv...
Article
Full-text available
The agents of spotted fevers in Latin America are Rickettsia rickettsii, R. parkeri, Rickettsia sp. strain Atlantic rainforest, and R. massiliae. In Continental Central America, R. rickettsii remains the only known pathogenic tick-borne rickettsia. In the present study, ticks were collected from wild mammals in natural areas of Belize. Besides prov...
Article
Full-text available
This study aimed to assess the exposure of free-living jaguars (Panthera onca) to Leptospira spp. and Brucella abortus in two conservation units in the Pantanal of Mato Grosso, Brazil. The presence of antibodies in blood samples of eleven jaguars was investigated using autochthonous antigens isolated in Brazil added to reference antigen collection...
Article
Full-text available
This research reports ticks on wild mammals from the Serra da Canastra National Park and surrounding areas, in Minas Gerais state, Brazil. From July 2005 to June 2014, 58 larvae, 133 nymphs and 43 adult ticks were collected in 40 capture events of free-living Mammals at the Park and surrounding areas. The tick species Amblyomma ovale Koch, 1844, Am...
Article
Full-text available
Toxoplasma gondii, Neospora caninum and Sarcocystis neurona are related apicomplexan parasites that cause reproductive and neurological disorders in a wide range of domestic and wild animals. In the present study, the immunofluorescence antibody test (IFAT) was used to investigate the presence of antibodies against T. gondii, N. caninum and S. neur...
Chapter
Conservation medicine of maned wolf ex situ and in situ
Chapter
Full-text available
Associado a uma ocupação Jê, o sítio arqueológico Galheta IV foi datado entre 1200 e 600 anos A.P. e está localizado no município de Laguna, no sul de Santa Catarina. As escavações deste sítio foram desenvolvidas pelo GRUPEP-Arqueologia/UNISUL em parceria com o MAE/USP, no qual foram encontrados oito sepultamentos, cerâmica, concreção, artefatos lí...
Article
Full-text available
We report threats to hoary (Lycalopex vetulus) and crab-eating foxes (Cerdocyon thous) at cattle farms in the southeast of Goiás state, Brazil, and on a federal road at Minas Gerais state, including the possible first documented crab-eating fox intentionally poisoned in Brazil. Greater awareness and understanding of threats faced by Brazilian carni...
Article
Full-text available
Diversos surtos epidêmicos causados por agentes patogênicos provocaram severo declínio em populações de carnívoros selvagens nas últimas décadas. Além deste impacto às populações silvestres, há a preocupação da transmissão de alguns destes agentes à população humana e de animais domésticos. De fato, as alterações ambientais têm provocado mudanças n...
Article
Full-text available
Rabies virus is a pathogen of major concern in free-ranging wild carnivores in several regions of the world, but little is known about its circulation in Brazilian wild carnivores. Sera from 211 free-ranging wild carnivores, captured from 2000 to 2006 in four locations of two Brazilian biomes (Pantanal and Cerrado), were tested for rabies antibodie...
Article
Full-text available
There has been growing interest in the specific impacts of anthropogenic factors on the health of wildlife. This study examined hematology and serum chemistry status of a prominent carnivore, the maned wolf (Chrysocyon brachyurus), living in, on the boundaries to, or on adjacent farmlands to the Serra da Canastra National Park, Brazil. Twenty-eight...

Network

Cited By

Projects

Projects (2)
Archived project
PANTHERA ACTIVITIES IN BRAZIL The NGO Panthera Brasil, owns Fazenda Jofre Velho (FJV), an old cattle ranch with more than 100 years of local history and currently with approximately 10,000 hectares of prime forested and seasonally flooded savanna habitat. FJV is located on the banks of the Cuiabá River, near the town of Porto Jofre, at the end of the Transpantaneira Road. The property also includes 735 hectares of prime gallery forest at the borders of the Piquirí River, located at Fazenda São Bento in the neighboring state of Mato Grosso do Sul and separated from the FJV by the Cuiabá River. Both properties neighbor the Encontro das Águas State Park, maintaining the integrity of the Cuiaba River Corridor and both represent an important refuge for fauna and flora of the Pantanal Region. FJV represents the main laboratory for Panthera to develop its scientific research activities involving the ecology and conservation of the jaguar and its prey, and also research on low-cost and practical anti-predation strategies are helping cattlemen and professionals to deal with this problem that affects jaguar survival in most of its range. Panthera has different projects in development at the Pantanal. The main ones are: 1. Assess the jaguar / cattle / human conflict and work with successful and practical anti-predation strategies; 2. Monitor the jaguar population and their prey under long-term research; 3. Implement the creation of an ecological corridor along the Cuiabá River, integrating existing federal/state/private conservation units with private properties (ranches); 4. Monitor jaguar observation tourism developed in the Porto Jofre region and assist in the creation of good practices to improve the activity, both for jaguars and for the tourists and tourism guides.
Project
The changes in the ecosystems caused by human activities involve a number of consequences for biodiversity, causing beyond the loss of species and gene flow, changes in habitat use and resources. This study aims to analyze the trophic ecology of mammals in pristine and human-dominated landscapes in the Brazilian biomes, through the analysis of stable isotopes. Samples will be analyzed and compared between different biomes, and also between pristine and anthropogenic areas, offering information about differences in eating habits and habitat use by species, structure the trophic chain and influence of the anthropic matrix. This project involves partnerships with several researchers and conservation projects, becoming a multidisciplinary initiative to produce data on the ecology, biology and behavior of the species of Brazilian fauna.