A5041392729- Avian ecology and behavior
- Fish biology, ecology, and behavior
- Parasite Biology and Host Interactions
- Animal Behavior and Reproduction
- Plant and animal studies
- Mediterranean and Iberian flora and fauna
- Ecology and Vegetation Dynamics Studies
- Date Palm Research Studies
- Bird parasitology and diseases
- Botanical Research and Applications
- Wildlife-Road Interactions and Conservation
- Wildlife Ecology and Conservation
- Diatoms and Algae Research
- Amphibian and Reptile Biology
- Animal Vocal Communication and Behavior
- Scarabaeidae Beetle Taxonomy and Biogeography
- Fish Biology and Ecology Studies
- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Ichthyology and Marine Biology
- Plant Parasitism and Resistance
- Cephalopods and Marine Biology
- Species Distribution and Climate Change
- Plant and soil sciences
- Insect behavior and control techniques
Universidade Federal do Rio Grande
2020-2024
University of Rio Grande and Rio Grande Community College
2024
Instituto Chico Mendes de Conservação da Biodiversidade
2022-2023
United Nations Human Settlements Programme
2022-2023
Defense Information Systems Agency
2023
Governo do Estado do Rio Grande do Sul
2022-2023
Chartered Institute of Management Accountants
2023
Empresa de Pesquisa Agropecuária do Rio Grande do Norte
2023
Fundación Pro Salud y Medio Ambiente
2023
Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul
2022-2023
Instances of recent and rapid speciation are suitable for associating phenotypes with their causal genotypes, especially if gene flow homogenizes areas the genome that not under divergent selection. We study a radiation nine sympatric bird species known as capuchino seedeaters, which differentiated in sexually selected characters male plumage song. sequenced genomes phenotypically diverse set to search genomic regions. Capuchinos show differences small proportion genomes, yet selection has...
We report 4 highly pathogenic avian influenza A(H5N1) clade 2.3.4.4.b viruses in samples collected during June 2023 from Royal terns and Cabot's Brazil. Phylodynamic analysis revealed viral movement Peru to Brazil, indicating a concerning spread of this along the Atlantic Americas migratory bird flyway.
The search for the genetic basis of phenotypes has primarily focused on single nucleotide polymorphisms, often overlooking structural variants (SVs). SVs can significantly affect gene function, but detecting and characterizing them is challenging, even with long-read sequencing. Moreover, traditional single-reference methods fail to capture many variants. Using long-reads, we generated a Capuchino Seedeater ( Sporophila ) pangenome, including 16 individuals from seven species, investigate...
Information on the breeding biology of birds is essential for improving avian life-history theory and implementing sound management conservation actions these organisms. Comprehensive reviews this kind information are lacking most Neotropical regions, including Rio Grande do Sul, southernmost Brazilian state. Aiming to update knowledge reproductive status in we reviewed records all potential species recorded state using a set predefined, restrictive criteria accepting evidences as effective....
The recently described Tropeiro Seedeater, Sporophila beltoni, is a rare long-distance austral migrant songbird that breeds in upland grasslands of southern Brazil. No aspect its natural history has been studied previously. We the this seedeater Araucarian Plateau from 2007 until 2011, focusing on breeding biology and monitoring 133 nests. cycle lasts for 3.8 months, season correlated with photoperiod phenology grasses; nesting peaks November December; mean clutch size 2 eggs (1–3); only...
The circannual timing of migration, breeding and moult is fundamental for understanding avian life histories. However, much our knowledge such processes derived from studies bird temperate regions, with few on subtropical or tropical birds. We studied the annual patterns moult, development brood patches fat deposition in a lowland community southern Brazil examined relationship between these temperature, precipitation day length. made 1702 captures 97 species Moult overlap partially overall...
We explored how grassland birds responded to three different managements in areas. Moreover, we examined whether bird's communities were depending on the biome grasslands inserted. carried out bird surveys six private farms Upland (Atlantic Forest biome) and Pampas (Pampa biome). Land use included: (1) natural – paddocks with cattle stocking around 0.8 animal units/ha, without improvement/crop plantation last four years; (2) improved usage of fertilizers forage improvement exotic species,...
We studied demography, territoriality and social/mate system of the Brazilian population Yellow Cardinal (Gubernatrix cristata). The study was conducted in municipality Barra do Quaraí, western Rio Grande Sul, Brazil, during two breeding seasons (October to February, 2013-2015). ringed 35 (seven females, 14 males young) out 53 individuals found, by September 2015, had 38 remaining individuals. Adult sex ratio 1.5:1 lifespan at least 8 years. Pairs are socially monogamous territorial, with...
Geographically isolated populations diverging in vocalizations and habitat use are prime candidates for diversification along the speciation/differentiation continuum. The Tawny-bellied Seedeater (Sporophila hypoxantha) is relatively widespread, thus potentially variable across its range. We investigated geographic variation vocalizations, use, migratory behavior, identifying five regiolects (song variants encompassing extensive subpopulations of a species all individuals within this large...
An analysis of morphology, vocalization, habitat preference, and distribution revealed that the southern yellowbilled population ascribed to Plumbeous Seedeater (Sporophila plumbea) is actually an undescribed species. Individuals this new species are distinguishable from other Sporophila, particularly S. plumbea, by a combination diagnostic characters: (1) adult male has robust, bright yellow bill with arched culmen, distinguishing it plumbea gray seedeaters; (2) larger heavier than plumbea;...
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Abstract Incomplete speciation can be leveraged to associate phenotypes with genotypes, thus providing insights into the traits relevant reproductive isolation of diverging taxa. We investigate genetic underpinnings phenotypic differences between Sporophila plumbea and beltoni. beltoni has only recently been described based, most notably, based on in bill coloration (yellow vs. black S. plumbea). Both species are indistinguishable through mtDNA or reduced-representation genomic data, even...
Summary Resource partitioning is a critical mechanism underlying the coexistence of close relative species that feed on similar resources. Based foraging data, we built plant–seedeater interaction network for three sympatric Neotropical seedeaters – namely Tropeiro Seedeater Sporophila beltoni , Black-bellied melanogaster and Tawny-bellied hypoxantha tested to what extent shared The was non-nested modular, forming modules, each one comprising seedeater their most consumed plants, indicating...
The genus Sporophila (Cabanis, 1844) unites about 30 species of small seedeaters that predominantly inhabit open or semi-open areas in the Neotropical region. taxonomy this group is based on morphological studies from collected male specimens. dynamic spatial and temporal variation plumage lack knowledge their vocalizations make it difficult to properly diagnose some even today, so these two aspects account for existing taxonomic dilemmas involving Sporophila. During a four-year field study,...
Song structure can be constrained by morphological characters such as beak size. Studies have shown that songbirds with larger beaks produce songs a lower frequency, narrower frequency range and note rates than birds smaller beaks. We tested whether volume bite force constrain song parameters in three Neotropical seedeaters show gradient of size (Sporophila beltoni, S. caerulescens hypoxantha). also determined the relationship between body structure. evaluated these species, measuring...
Many traits influence birdsong diversity. Patterns observed in the acoustic parameters can be a result of morphological constraint and also explained by phylogenetic relationships. Understanding morphologic mechanisms that act on song structure might account how they catalyze speciation evolve lineages sort. We analyzed evolution beak volume constraints "finch-like" species Neotropical seedeaters. tested if limits territorial songs, based differences beaks 19 from genus Sporophila...
Abstract We present the first nesting information for Tropeiro Seedeater ( Sporophila beltoni ), a newly described and poorly known Neotropical passerine endemic to southern Brazil. observed novel male biased behavior nest site selection in based on seven events of pre-nesting display courtship. describe nest, eggs, nestlings, fledglings 133 nests found over four breeding seasons (2007 2011). The is cup-shaped structure made with dry grass inflorescences spider webs. It placed low, forked...
The capuchinos, a subset of the genus Sporophila, represent radiation seedeaters characterized by little genetic differentiation, virtually no change in bill and body shape, marked plumage differences on common theme, notable differentiation vocalizations habitat use. We describe distinctive variant that would have been considered species traditional strictly phenotypical criteria for classification genus. This resembles Tawny-bellied Seedeater (S. hypoxantha) but has tawny, not gray, nape...
South America is home to the highest diversity of birds on planet, yet we still understand relatively little about their seasonal movements, or even which species are migratory. During two consecutive years, used satellite transmitters study movement ecology 10 individual Snail Kites (Rostrhamus sociabilis) captured in southern Brazil. We detected highly variable patterns among Kites, with some migrating between well-defined sites, up 4000 km mouth Amazon River. Others exhibited...
ABSTRACT The search for molecular targets of selection is leading to a better understanding how evolution shapes biological diversity. Instances recent and rapid speciation are suitable associating phenotypes with their causal genotypes, because gene flow may homogenize areas the genome that not under divergent selection. Locating differentiated genomic regions among taxa allows us test associations between genes in these contributions phenotypic Here we study radiation nine sympatric bird...