A5044232898- Plant and animal studies
- Plant Diversity and Evolution
- Genetic diversity and population structure
- Fern and Epiphyte Biology
- Marine Toxins and Detection Methods
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Protist diversity and phylogeny
- Marine and coastal plant biology
- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Banana Cultivation and Research
- Fish biology, ecology, and behavior
- Fish Ecology and Management Studies
- Seaweed-derived Bioactive Compounds
- Ecology and Vegetation Dynamics Studies
- Ethnobotanical and Medicinal Plants Studies
- Species Distribution and Climate Change
- Leaf Properties and Growth Measurement
- Plant Pathogens and Fungal Diseases
- Fish Biology and Ecology Studies
- Marine Ecology and Invasive Species
- Marine Sponges and Natural Products
- Genetic and phenotypic traits in livestock
- Parasite Biology and Host Interactions
Universidade Federal do Estado do Rio de Janeiro
2016-2025
Universidade Federal do Rio de Janeiro
2002-2024
Universidade Federal Rural do Rio de Janeiro
2005-2009
UMR BIOdiversity, GEnes & Communities
2005
Universidade Federal do Rio Grande do Sul
2005
In this study, we evaluate phylogeographic patterns and predictions of ecological niche modelling (ENM) for Eugenia uniflora (Myrtaceae), a widely distributed taxon in the Atlantic forest domain, to understand effect past climatic oscillations on demographic history species. An analysis population structure demography was conducted E. from 46 localities natural environments across distribution range species based three plastid markers. ENM also performed predict suitable areas dramatic...
Abstract— This study evaluated the morphological variation and genetic structure of seven natural populations Stigmatodon goniorachis complex (Bromeliaceae) endemic to vertical faces inselbergs in Brazilian Atlantic Forest. A cluster analysis principal component (PCA) corroborated existence four clearly separated species, S. brassicoides, costae, francae , unveiled two distinct groups populations. The main components revealed by PCA were: inflorescence peduncle diameter, floral bract length,...
ABSTRACT The assimineid Solenomphala scalaris (Heude, 1882) is present in the interface between freshwater and terrestrial habitats. It was originally described from China, but it has been recently recorded Singapore Malaysia, addition to possible records Taiwan, Japan Elba, Italy. Sampling efforts four Brazilian states (Amazonas, Rio de Janeiro, São Paulo Santa Catarina) since 2009 recovered specimens similar S. scalaris, always anthropic sites. shell, operculum, radula penis largely agree...
Neotropical rainforests exhibit high levels of endemism and diversity. Although the evolutionary genetics plant diversification has garnered increased interest, phylogeographic studies widely distributed species remain scarce. Here we describe chloroplast nuclear variation patterns in Schizolobium parahyba (Fabaceae), a widespread tree that harbor two varieties with disjunct distribution. Chloroplast sequence analyses yielded 21 4 haplotypes, respectively. Two genetic diversity centers...
Abstract Aim Life history traits and range size are key correlates of genetic diversity in trees. We used a standardized sampling protocol to explore how life relate the magnitude, variance structuring (both between‐ within‐population) Neotropical tree species. Location The Neotropics Methods present meta‐analysis new population data generated for 23 species (=2,966 trees, 86 populations) across shared broad geographic area. compared established metrics these (e.g., diversity, structure,...
This study records a new introduction of the estuarine, invasive bivalve Mytilopsis cf. sallei in southeastern Brazil. The record lies close to largest port country (the Port Santos, São Paulo state), raising serious concerns related probable expansion this future years. Two out five sampling stations showed live specimens M. soft sediment, sites with polluted waters and salinity below 20 ppt, reaching maximum abundance 1983 specimens/m2. According COI evidence, two lineages are present...
ABSTRACT Brazilian cherry ( Eugenia uniflora L.) occurs in the Atlantic Coastal Tropical Forest from north‐eastern state of Ceara, to southernmost Rio Grande do Sul. E. plays an important role maintenance ‘Restinga’ ecosystems, at interface between forest and strand vegetation. Here, we characterize genetic diversity, its allocation within populations possible components nuclear cytoplasmic gene flow that determine spatial distribution variability. Five encompassing distinct biogeographical...
Abstract Subtribe Vrieseinae comprise four genera, Alcantarea, Stigmatodon, Vriesea s.s. and Waltillia, encompassing c. 20% of species in Tillandsioideae (Bromeliaceae), almost all which are exclusive to Brazil. Here, we explore the biogeographic history Vrieseinae, sampling 21 22 genera (130 terminals) three DNA sequence markers (two plastid: rps16-trnK matK; one nuclear: PHYC). We inferred a dated phylogeny ancestral areas this lineage through RASP (reconstruct state phylogeny) analyses....
:Gambierdiscus excentricus is an epibenthic dinoflagellate able to produce ciguatoxin and maitotoxin-like compounds that are responsible for ciguatera fish poisoning. Morphological descriptions molecular characterization of two G. strains isolated from Brazil maintained in culture were provided. The most complete description the morphology sulcal region Gambierdiscus based on light scanning electron microscopy was presented. area nomenclature used by different authors name plates reviewed....
Aechmea nudicaulis is a clonal bromeliad common to the Brazilian Atlantic forest complex and found abundantly in sandy coastal plain vegetation (restinga) on north coast of Rio de Janeiro state, Brazil. This restinga site structured islands, species plays key role as nurse plant, much favoured by its clonality. We studied structure consequences clonality population spatial genetic (SGS) this using six nuclear microsatellites. Spatial autocorrelation analysis was performed study effects...
Recurrent blooms of Ostreopsis cf. ovata have been reported in Brazil and the Mediterranean Sea with associated ecological, latter case, health impacts. Molecular data based on D1–D3 D8–D10 regions LSU rDNA ITS loci, morphology O. isolates field populations from locations along Brazilian tropical subtropical coastal three oceanic islands are presented. Additional sequences single cells coast provided. Toxin profiles quantities PLTX their analogues; OVTXs; contained two clonal cultures Rio de...
This study used the hypervariable domain of mitochondrial DNA ( mtDNA ) control region CR to assess genetic divergence among native and invasive populations Cichla kelberi , which is considered first peacock cichlid introduced established throughout Brazil most this genus worldwide. The maximum likelihood tree based on 53 sequences with strong bootstrap support revealed that C. forms a monophyletic clade, confirming all 30 studied belong morphotype. Additionally, haplotype analysis from 11...
Abstract The Araucariaceae family has only two species in South America: Araucaria angustifolia and araucana . Both are mainly used for timber have been overexploited the past. Currently, they found as fragmented populations classified under International Union Conservation of Nature Natural Resources (IUCN) guidelines vulnerable species. Population fragmentation may seriously affect genetic diversity these can consequently lead to decreased survival. To better understand structure American...
Habitat fragmentation and a decrease in population size may lead to loss genetic diversity. For the first time, reduction diversity northernmost limit of natural occurence (southeastern Brazil) Araucaria angustifolia comparison with populations main area species continuous distribution (southern Brazil), was tested. The 673 AFLPs markers revealed high level for (Ht = 0.27), despite anthropogenic influence throughout last century, H isolated southeastern Brazil (H 0.16), thereby indicating...
Abstract— The genus Stigmatodon occurs in vertical and bare granite slopes, typical of the inselbergs Brazilian Atlantic Forest. Here, we present first broad phylogenetic analysis focused on , sampling a total 83 terminals, including 16 20 species morphologically similar Vriesea . We conducted using two plastid markers ( matK rps16-trnK ) nuclear gene PHYC to infer relationships reconstruct ancestral states for ecological morphological characters. Our results suggest monophyly as originally...
The morphology and molecular phylogenetic relationships of Coolia species isolated from Brazil, including C. malayensis, tropicalis a new lineage the canariensis complex, are presented. Morphology was investigated by light scanning electron microscopy. No significant morphological differences between Brazilian strains other geographically distant malayensis were observed. In LSU ITS rDNA phylogenies sequences Brazil branched within clade these with elsewhere. Phylogenetic (LSU rDNA) complex...