A5022937717- Primate Behavior and Ecology
- Wildlife Ecology and Conservation
- Animal Vocal Communication and Behavior
- Amphibian and Reptile Biology
- Animal Behavior and Reproduction
- Animal Behavior and Welfare Studies
- Genetic and phenotypic traits in livestock
- Fish biology, ecology, and behavior
- Gut microbiota and health
- Bat Biology and Ecology Studies
- Species Distribution and Climate Change
- Mosquito-borne diseases and control
- Identification and Quantification in Food
- Evolution and Paleontology Studies
- Plant and animal studies
- Aquaculture disease management and microbiota
- Genomics and Phylogenetic Studies
- Fern and Epiphyte Biology
- Wildlife-Road Interactions and Conservation
- Insect and Arachnid Ecology and Behavior
- Zoonotic diseases and public health
- Genetic diversity and population structure
- Parasite Biology and Host Interactions
- Insect Utilization and Effects
- Clostridium difficile and Clostridium perfringens research
State University of Norte Fluminense
2015-2024
Natura (Brazil)
2018
National Zoological Park
1998-2003
Smithsonian Institution
1998-2003
University of California, Davis
1990-1998
In 1960, the G olden lion tamarin Leontopithecus rosalia was almost extinct in wild and captive population, with poor reproduction survival, not well established. 1970s, after many improvements, population began to grow P oço das A ntas B iological R eserve created protect species. 1980s, long‐term research begun on demography socio‐ecology of tamarins, along community environmental education a reintroduction programme captive‐born animals (initially reserve, later neighbouring private...
Animal hybridization is well documented, but evolutionary outcomes and conservation priorities often differ for natural anthropogenic hybrids. Among primates, an order with many endangered species, the two contexts can be hard to disentangle from one another, which carries important implications. Callithrix marmosets give us a unique glimpse of genetic effects under distinct human-induced contexts. Here, we use 44 autosomal microsatellite marker panel examine genome-wide admixture levels...
The golden lion tamarin is an endangered primate endemic to Brazil's Atlantic Forest. Centuries of deforestation reduced numbers a few hundred individuals in isolated forest fragments 80 km from Rio de Janeiro city. Intensive conservation action including reintroduction zoo-born tamarins into 1984-2000, increased about 3,700 2014. Beginning November 2016, southeastern Brazil experienced the most severe yellow fever epidemic/epizootic country years. In May 2018, we documented first death due...
ABSTRACT Hybridization is continually documented in primates, but effects of natural and anthropogenic hybridization on biodiversity are still unclear differentiating between these contexts remains challenging regards to primate evolution conservation. Here, we examine the mitochondrial DNA (mtDNA) control region Callithrix marmosets, which provide a unique glimpse into interspecific mating under distinct conditions. was sampled from 40 marmosets along 50‐km transect previously...
Mammalian captive dietary specialists like folivores are prone to gastrointestinal distress and primate suffer the greatest gut microbiome diversity losses in captivity compared wild. Marmosets represent another group of specialists, exudivores that eat plant exudates, but whose remains relatively less studied. The common occurrence marmosets prompted us study Callithrix composition predictive function through bacterial 16S ribosomal RNA V4 region sequencing. We sampled 59 wild across four...
Simian foamy virus (SFV) is a retrovirus that infects primates, including American primates (AP), but epidemiological studies are often limited to captive animals. The state of Rio de Janeiro (RJ) home an endemic AP species, Leontopithecus rosalia, and invasive chrysomelas, both endangered. This study assessed the molecular prevalence SFV in these species. Genomic DNA was extracted from 48 oral swab samples L. chrysomelas (Niterói/RJ) 102 rosalia (Silva Jardim/RJ). qPCR performed diagnose...
Disease outbreaks can severely affect populations in the wild. However, their consequences on individual social behaviour and population demography are poorly understood. We used a multi-site capture-recapture model to investigate impacts of yellow fever outbreak endangered golden lion tamarin Leontopithecus rosalia, highly fragmented Atlantic forest, Brazil. Annual adult survival rate declined 2017-2018, coinciding with period. Simultaneously, dispersal patterns changed temporarily,...
We collected data from wild and reintroduced golden lion tamarins (Leontopithecus rosalia) to describe the behavior of donor recipient during food transfers, evaluate effect supplemental feeding on transfer behavior, examine various hypotheses concerning function transfers in primates. Behavioral observations were conducted 12 groups with young (N = 30) between ages 1 week year old. Results show that involve behaviors, steals by recipients offers donors; mostly derive adults are directed at...
Marmosets (Callithrix spp.) have been introduced widely in areas within Rio de Janeiro state assigned for the reintroduction of endangered golden lion tamarin (Leontopithecus rosalia). The objetives this study were to estimate marmoset (CM) population two fragments with reintroduced quantify association and characterize interactions between species. CM density (0,09 ind/ha) was higher than that (0,06 ind/ha). mean index tamarins marmosets varied among groups seasons (winter=62% summer=35%)....
X-chromosome inactivation (XCI) is the epigenetic transcriptional silencing of an during early stages embryonic development in female eutherian mammals. XCI assures monoallelic expression each cell and compensation for dosage-sensitive X-linked genes between females (XX) males (XY). DNA methylation at carbon-5 position cytosine pyrimidine ring context a CpG dinucleotide sequence (5meCpG) promoter regions key marker gene silencing. Using computational analysis, we revealed extragenic tandem...
Abstract We provide here a current overview of marmoset (Callithrix) evolution, hybridization, species biology, basic/biomedical research, and conservation initiatives. Composed 2 subgroups, the aurita group (C C flaviceps) jacchus geoffroyi, jacchus, kuhlii, penicillata), this relatively young primate radiation is endemic to Brazilian Cerrado, Caatinga, Atlantic Forest biomes. Significant impacts on Callithrix within these biomes resulting from anthropogenic activity include (1) population...
The introduction of exotic species can increase the risk extinction native through new diseases, predation or resource competition. marmosets Callithrix penicillata and jacchus hybrids these two have been introduced to privately owned forests in lowland Atlantic forest Rio de Janeiro State Brazil, region occurrence endangered golden lion tamarin, Leontopithecus rosalia. Because ecology biology tamarins is similar, there a reasonable that would transmit pathogens such as endo parasites....
Abstract Ecological networks describe the interactions between species, underlying structure of communities, function and stability ecosystems. To date, network analyses have been extensively applied to understand mutualistic antagonistic interactions, but few examined commensal particularly in neotropical regions. The inselbergs southeastern Brazil are considered one three most important regions world terms terrestrial species diversity endemism poorly studied. In this study, we constructed...
Abstract The Brazilian buffy-tufted-ear marmoset ( Callithrix aurita ), one of the world’s most endangered primates, is threatened by anthropogenic hybridization with exotic, invasive species. As there are few genetic data available for C. , we developed a PCR-free protocol minimal technical requirements to rapidly generate genomic skimming and portable nanopore sequencing. With this direct DNA sequencing approach, successfully determined complete mitogenome that initially identified as ....
Abstract Play is a complex behavior that widespread among vertebrates. Despite the potential benefits for development of social, cognitive and motor skills, play has costs: energy expenditure, risks injury predation. As fitness are presumably to be gained as adults, we expect young animals minimize its immediate costs. Here, describe in golden lion tamarins (GLTs) ( Leontopithecus rosalia ) test cost‐minimizing hypotheses. We collected data on adult vigilance nine groups (four wild five...
Common marmosets, one of the smallest anthropoid primates, have a relatively high reproductive rate, capable producing twins or triplets twice per year. Growth and development infants is rapid, lactation short at less than 3 months. Although mean values for proximate composition (dry matter, protein, fat sugar) captive common marmoset milks fall within norms, highly variable among individual samples, with concentrations milk ranging from below 1 to over 10%. To examine extent which this...
A Mata Atlântica, apesar de ainda sofrer uma intensa devastação, abriga 261 espécies mamíferos, sendo 73 endêmicos. Mamíferos grande porte estão entre os mais vulneráveis à caça, perda habitat e tráfico animais. No Estado do Rio Janeiro existem somente duas Reservas Biológicas Atlântica baixada, a Reserva Biológica Poço das Antas União. O presente estudo teve como objetivo avaliar influência da prática caça ilegal sobre fauna mamíferos nestas Unidades Conservação. levantamento populacional...
Abstract Species interactions can shape the structure of natural communities. Such sets have been described as complex ecological networks, an example which is commensal network formed by epiphyte–phorophyte interactions. Vascular epiphytes germinate and grow on phorophytes (support trees), assuming a horizontal distribution (among phorophyte species) vertical (from base tree trunk to crown phorophytes, i.e., through zones). Here, we investigated organization these structural dimensions in...
A introdução de espécies fora da sua área natural e as conseqüências permanência são cada vez mais estudadas. espécie Callithrix penicillata foi introduzida na Mata Atlântica, ocupando a outros calitriquídeos, como C. aurita. associação entre primatas nativos exóticos pode resultar em competição, constituindo uma ameaça à nativa. Através observação ocorrência calitriquídeos no Parque Nacional Serra dos Órgãos percepção moradores do entorno, fornecemos sugestões para o manejo fauna Unidades...
Species reintroductions and translocations are widely used management interventions to restore locally extinct or augment severely depleted species. In such projects, the human dimension issues that influence success of these conservation encountered at five different stages project life cycle: (1) planning, (2) initiation, (3) implementation, (4) ending stage, (5) post-exit. Overlooking failing consider in any phases could jeopardise translocation project's success. When dimensions included...