A5028302972- Genetic diversity and population structure
- Fish biology, ecology, and behavior
- Identification and Quantification in Food
- Plant and animal studies
- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Wildlife Conservation and Criminology Analyses
- Genetic and phenotypic traits in livestock
- Genomics and Phylogenetic Studies
- Fish Biology and Ecology Studies
- Evolution and Paleontology Studies
- Physics of Superconductivity and Magnetism
- Species Distribution and Climate Change
- Bird parasitology and diseases
- Vector-borne infectious diseases
- Ichthyology and Marine Biology
- Advanced Condensed Matter Physics
- Rural Development and Agriculture
- Forest Insect Ecology and Management
- Animal Behavior and Reproduction
- Animal Genetics and Reproduction
- Ecology and Vegetation Dynamics Studies
- Forensic and Genetic Research
- High-pressure geophysics and materials
- Animal Ecology and Behavior Studies
Morpho (United States)
2025
Universidade de Brasília
2012-2024
SELVA
2017
Universidade de São Paulo
2001-2013
Universidade Federal de Goiás
2009-2011
Universidade Católica de Brasília
2008-2009
Yahoo (United Kingdom)
2009
Universidade Federal de São Carlos
2001-2006
Identifying the ecological factors that shape parasite distributions remains a central goal in disease ecology. These include dispersal capability, environmental filters and geographic distance. Using 520 haemosporidian genetic lineages recovered from 7,534 birds sampled across tropical temperate South America, we tested (a) latitudinal diversity gradient hypothesis (b) distance-decay relationship (decreasing proportion of shared species between communities with increasing distance) for this...
The Neotropical deer genus Mazama is characterized by homoplastic morphological characters, a high karyotypic diversity, and polyphyletic condition. species of the have been recovered into two multigeneric lineages, subtribes Odocoileina Blastocerina, tribe Odocoileini (New World deer) in family Cervidae. Within gray brockets include non-sister species, Subulo gouazoubira, occurring south Amazon region, Passalites nemorivagus, Guianas region. We clarify taxonomic status phylogenetic position...
Abstract Adaptative convergences of ecomorphological traits are widespread in several animal lineages. Among Neotropical deer there very similar species characterized by a set homoplasies: small body sizes, spiked antlers, and front legs shorter than the rear legs. These different phylogenetic clades among larger branched-antlered sympatric species, which considered ancestral traits. It is hypothesized that convergence these morphological an adaptation to living dense forests. This study...
Abstract The gray brocket deer, Mazama gouazoubiraG. Fischer, 1814, occurs in South America and presents an extensive degree of morphological genetic variability. Previous phylogenetic research showed that the genus is polyphyletic imposed designation a different genus-group name for M. gouazoubira. We aimed to review clarify taxonomy gouazoubira through proposal updating nomenclature this taxon by characterization specimens collected close original type locality (topotypes). topotypes were...
Comparing the patterns of population differentiation among genetic markers with different modes inheritance can provide insights into sex-biased dispersal and gene flow. The Blue-and-yellow Macaw (Ara ararauna) is a Neotropical parrot broad geographic distribution in South America. However, little known about natural history current status remaining wild populations, including levels variability. progressive decline possible fragmentation populations may endanger this species near future. We...
We performed phylogeographic and genetic structure analyses of Neothraupis fasciata joined with species distribution modelling to evaluate whether: (1) the variability shows a pattern expected by isolation-by-distance model; (2) influence Pleistocene climate changes on distribution; (3) climate/climatic stability (hypothesis climatic stability) as predictor population diversity. Based two molecular datasets (ND2 FIB-5), hypothesis was not supported. The mitochondrial haplotype network...
Despite many studies on avian blood parasites, we still have a limited understanding of the mechanisms that drive patterns haemosporidian infection among tropical birds, including effects associated with sex, age, and seasonality. Using molecular morphological methods for blood-parasite detection, found juvenile White-banded Tanagers (Neothraupis fasciata (Lichtenstein, 1823)) had lower prevalence than adults in population within central Brazil. However, no sex or seasonal differences were...
Coalescent theory provides powerful models for population genetic inference and is now increasingly important in estimates of divergence times speciation research. We use molecular data methods based on coalescent to investigate whether evidence supports the hypothesis A. pretrei tucumana as separate species allow us assess which allopatric model seems better explain diversification process these taxa. sampled 13 from two provinces northern Argentina 28 nine localities Rio Grande do Sul,...
Based on phylogeographic and niche model analyses of the narrow‐billed woodcreeper Lepidocolaptes angustirostris , we evaluated predictions two diversification hypotheses related to dry diagonal South America: (I) isolation by distance (IBD) (II) landscape heterogeneity. We also investigated influence Pleistocene climatic oscillations population dynamic this species, discussed implications our findings for taxonomy woodcreeper. sampled 63 individuals including all subspecies described L....
ABSTRACT Aim The blue‐fronted amazon ( Amazona aestiva ) is a widely distributed Neotropical parrot with two recognized sub‐species, which are mainly characterized by the colour of shoulder. We explored mitochondrial DNA variability to determine how demographic processes and historical climatic fluctuations may have contributed phylogeographical pattern morphological variation A. aestiva, this information could be useful understand evolutionary relationship species ochrocephala complex...
The complete mitochondrial genome of the brown brocket deer Mazama gouazoubira and a set polymorphic microsatellite markers were identified by 454-pyrosequencing. De novo assembly recovered 98% with mean coverage 9-fold. mitogenome consisted 16,356 base pairs that included 13 protein-coding genes, two ribosomal subunit 22 transfer RNAs control region, as found in other deer. genetic divergence between described here previously published report was ∼0.5%, region ND5 gene showing highest...
Abstract Microsatellite loci were isolated from the Blue‐and‐gold Macaw ( Ara ararauna ), a Neotropical parrot, GT n and CT enriched genomic library. Six characterized varying one to 11 alleles per locus. Five exhibited greater than 50% heterozygosity within 49 individuals genotyped. Furthermore, primers also amplified DNA two additional genera of parrots, indicating potential utility these markers for population‐level studies conservation efforts parrots.
Cross-amplification was tested and variability in microsatellite primers (designed for Neotropical parrots) compared, five macaw species, viz., three endangered blue macaws (Cyanopsitta spixii [extinct the wild], Anodorhynchus leari [endangered] hyacinthinus [vulnerable]), two unthreatened red (Ara chloropterus Ara macao). Among tested, 84.6% successfully amplified products C. spixii, 83.3% A. leari, 76.4% hyacinthinus, 78.6% 71.4% macao. The mean expected heterozygosity estimated each based...
ferentiation (θ = 0.007, P 0.005) could be detected only between the most distant populations, Tocantins and Argentina, localized at northeast southwest limits of sample sites, respectively.There was no evidence inbreeding within or suggesting random mating among individuals.These results suggest a clinal distribution genetic variability, as observed for variation in plumage color two A. aestiva subspecies.Bottleneck analysis did not show recent reduction population size.Thus, management...
More than 90% of birds are socially monogamous, although genetic studies indicate that many often not sexually monogamous. In the present study, DNA fingerprinting was used to estimate relationships between nestlings belonging same broods evaluate mating system in monogamous macaw, Ara ararauna. We found 10 11 investigated, showed similarity levels congruent with values expected among full-sibs, suggesting they shared parents. However, one brood, low observed could be a result intraspecific...