22 Works

Leaf litter quality drives the feeding by invertebrate shredders in tropical streams

Guilherme Sena, José Francisco Gonçalves Júnior, Renato Martins, Neusa Hamada & Renan Rezende Rezende
Amazon and Cerrado forested streams show natural fluctuations in leaf-litter quantity along the time and space, suggesting a change on litter quality input. These natural fluctuations of leaf-litter have repercussion on the organic matter cycling and consequentlyeffects on leaf decomposition in forested streams. The effects of the quantity of leaf litter with contrasting traits on consumption by larvae of shredder insects from biomes with different organic matter dynamics have still been an understudied question. The...

A novel Sporothrix brasiliensis genomic variant in Midwestern Brazil: evidence for an older and wider sporotrichosis epidemic

João Eudes Filho, Isabele Barbieri dos Santos, Carmélia Matos Santiago Reis, José Salvatore Leister Patané, Verenice Paredes, João Paulo Romualdo Alarcão Bernardes, Sabrina dos Santos Costa Poggiani, Talita de Cássia Borges Castro, Oscar Mauricio Gomez, Sandro Antonio Pereira, Edvar Yuri Pacheco Schubach, Kamila Peres Gomes, Heidi Mavengere, Lucas Gomes de Brito Alves, Joaquim Lucas, Hugo Costa Paes, Patrícia Albuquerque, Laurício Monteiro Cruz, Juan G. McEwen, Jason E. Stajich, Rodrigo Almeida-Paes, Rosely Maria Zancopé-Oliveira, Daniel R. Matute, Bridget M. Barker, Maria Sueli Soares Felipe … & André Moraes Nicola
Sporotrichosis is a subcutaneous infection caused by fungi from the genus Sporothrix. It is transmitted by inoculation of infective particles found in plant-contaminated material or diseased animals, characterizing the classic sapronotic and emerging zoonotic transmission, respectively. Since 1998, southeastern Brazil has experienced a zoonotic sporotrichosis epidemic caused by S. brasiliensis, centred in the state of Rio de Janeiro. Our observation of feline sporotrichosis cases in Brasília (Midwestern Brazil), around 900 km away from Rio de...

Tropical riparian forests in danger from large savanna wildfires

Bernardo Flores, Michele Dechoum, Isabel Schmidt, Marina Hirota, Anna Abrahão, Larissa Verona, Luísa Pecoral, Márcio Cure, André Giles, Patrícia Costa, Matheus Pamplona, Guilherme Mazzochini, Peter Groenendijk, Géssica Minski, Gabriel Wolfsdorf, Alexandre Sampaio, Fernanda Piccolo, Lorena Melo, Renato Fiacador & Rafael Oliveira
1. Tropical savannas are known for the fire-prone ecosystems, yet, riparian evergreen forests are another important landscape feature. These forests usually remain safe from wildfires in the wet riparian zones. With global changes, large wildfires are now more frequent in savanna landscapes, exposing riparian forests to unprecedented impact. 2. In 2017, a large wildfire spread across the Chapada dos Veadeiros National Park, an iconic UNESCO site in central Brazil, raising concerns about its impact on...

Data from: Hidden leks in a migratory songbird: mating advantages for earlier and more attractive males

Lilian Manica, Jeff Graves, Jeffrey Podos & Regina Macedo
In some socially monogamous birds, territories sometimes occur in aggregations. The “hidden lek” hypothesis suggests that territorial aggregations might be explained by males establishing territories near successful males (“hotshot” model), or by females preferring to mate in large clusters (“female preference” model). In both scenarios, clusters would provide more opportunities for finding mates and achieving extra-pair copulations. Our study tests predictions of these two models in the blue-black grassquit (Volatinia jacarina). Males of this species...

The combined role of dispersal and niche evolution in the diversification of Neotropical lizards

Fernanda P. Werneck, Yumi Sheu, Juan P. Zurano, Marco A. Ribeiro-Junior, Teresa C. Ávila-Pires, Miguel T. Rodrigues & Guarino R. Colli
Ecological requirements and environmental conditions can influence diversification across temporal and spatial scales. Understanding the role of ecological niche evolution under phylogenetic contexts provides insights on speciation mechanisms and possible responses to future climatic change. Large-scale phyloclimatic studies on the megadiverse Neotropics, where biomes with contrasting vegetation types occur in narrow contact, are rare. We integrate ecological and biogeographic data with phylogenetic comparative methods, to investigate the relative roles of biogeographic events and niche divergence...

Synergistic impacts of co-occurring invasive grasses cause persistent effects in the soil-plant system after selective removal

Rafael Zenni, Wanderson Da Cunha, Carolina Musso, Jocemara De Souza, Gabriela Nardoto & Heloisa Miranda
1. Human influence on the environment is so extensive that virtually all ecosystems on the planet are now affected by biological invasions. And, often, ecosystems are invaded by multiple co-occurring non-native species. Hence, it is important to understand the impacts these invasions are producing on biodiversity and ecosystem processes. 2. Here, we present results of a two-year long field experiment where we tested the effects of co-occurring invasive C4 African grasses in a Cerrado area...

Mixed ancestry from wild and domestic lineages contributes to the rapid expansion of invasive feral swine

Timothy Smyser, Michael Tabak, Chris Slootmaker, Michael Robeson, Ryan Miller, Mirte Bosse, Hendrik-Jan Megens, Martien Groenen, Samuel Paiva, Danielle Assis De Faria, Harvey Blackburn, Brandon Schmit & Antoinette Piaggio
Invasive alien species are a significant threat to both economic and ecological systems. Identifying processes that give rise to invasive populations is essential for implementing effective control strategies. We conducted an ancestry analysis of invasive feral swine (Sus scrofa, Linnaeus, 1758), a highly destructive ungulate that is widely distributed throughout the contiguous United States, to describe introduction pathways, sources of newly-emergent populations, and processes contributing to an ongoing invasion. Comparisons of high-density single nucleotide polymorphism...

Data from: Partners coordinate territorial defense against simulated intruders in a duetting ovenbird

Pedro Diniz, Gianlucca Rech, Pedro Ribeiro, Michael Webster & Regina Macedo
Duets in breeding pairs may reflect a situation of conflict, whereby an individual answers its partner’s song as a form of unilateral acoustic mate guarding or, alternatively, it may reflect cooperation, when individuals share in territory defense or safeguard the partnership. The degree of coordination between the sexes when responding to solo versus paired intruders may elucidate the function of songs in duets. We examined this issue in a study with rufous horneros (Furnarius rufus),...

Where are the bats? An environmental complementarity analysis in a megadiverse country

Ludmilla Aguiar, Maria João Ramos Pereira, Marlon Zortea, Ricardo Machado, Ludmilla M. S. Aguiar, Maria João R. Pereira, Marlon Zortéa & Ricardo B. Machado
Aim: Field surveys are necessary to overcome Wallacean shortfalls. The task is even more important when human pressure on tropical – megadiverse – ecosystems is considered. However, due to financial constraints, spatial and temporal prioritization is required. Here we used the concept of environmental complementarity to identify non-surveyed regions for bats that are environmentally different from other already surveyed regions. We highlighted regions in Brazil where field inventories could be conducted to locate new occurrences...

Pedagogia do cinema no coração do Brasil: o documentário vai à educação básica rural

Gisele Ferreira

Risk factors for mild depression in older women with overactive bladder syndrome: a cross sectional study

Raquel Jacomo, Aline Alves, Marianne Silva, Liana Matheus, Patricia Garcia, Dayanne Lorena & João De Sousa
Background: Studies demonstrate an association between severe depression and overactive bladder syndrome (OAB). However, mild depression is constantly overlooked. The aim of this study was to evaluate the clinical and sociodemographic factors associated with mild depression in women with OAB. Methods: Cross-sectional study involving 241 women over 60 years old in Brasilia, Brazil. All patients were subjected to an interview followed by questionnaires and physical examination. The clinical and sociodemographic variables analyzed were age, body...

Plant size and leaf traits for epiphyte species found in flooded gallery forests and non-flooded gallery forests in Central Brazil

Rodolfo Oliveira, Gerhard Zotz, Wolfgang Wanek & Augusto Franco
Despite their unique adaptations to thrive in canopy environments without access to soil resources, epiphytes are underrepresented in studies of functional traits and of functional composition of tropical plant communities. We investigated functional traits of spermatophytic (seed-bearing) C3 and CAM epihyte communities in flooded and non-flooded gallery forests in Central Brazil. The two forest types differ in floristic, structure, microclimate and edaphic conditions. We studied plant size, leaf thickness, leaf dry matter content, leaf area,...

River dams and the stability of bird communities: A hierarchical Bayesian analysis in a tropical hydroelectric power plant

Tarcísio Abreu, Sandro Berg, Iubatã Faria, Leonardo Gomes, Jader Marinho-Filho & Guarino Colli
The effects of anthropogenic disturbance upon the stability of wildlife communities depend on the heterogeneity and connectivity of habitat remnants on multiple scales. The number of hydroelectric dams in biodiversity hotspots (Africa, South America and Asia) is growing rapidly. To establish their environmental impact, it is essential to understand the dynamics of wildlife communities before and following the establishment of dams. We evaluated the impacts of the filling of the Serra do Facão hydroelectric reservoir...

Time of activity is a better predictor of the distribution of a tropical lizard than pure environmental temperatures

Gabriel Henrique De Oliveira Caetano, Juan Carlos Santos, Leandro Godinho, Vitor Cavalcante, Luisa Viegas, Pedro Campelo, Lidia Martins, Alan De Oliveira, Júlio Alvarenga, Helga Wiederhecker, Verônica De Novaes E Silva, Fernanda Werneck, Donald Miles, Guarino Colli & Barry Sinervo
Environmental temperatures influence ectotherms’ physiology and capacity to perform activities necessary for survival and reproduction. Time available to perform those activities is determined by thermal tolerances and environmental temperatures. Estimates of activity time might enhance our ability to predict suitable areas for species’ persistence in face of climate warming, compared to the exclusive use of environmental temperatures, without considering thermal tolerances. We compare the ability of environmental temperatures and estimates of activity time to predict...

Sex‐specific effects of predation risk on parental care in a sexually dichromatic Neotropical songbird

Pedro Z. De Moraes, Pedro Diniz & Regina H. Macedo
Predation risk affects a broad range of bird behaviours, especially parental care. The adaptive behavioural changes presented by both parents, however, may differ according to different levels of predation risk suffered by each sex. This is especially prominent in sexually dichromatic species, where one of the sexes is more visually conspicuous and hence vulnerable to increased nest predation risk during nest visits. Here, we experimentally investigated how predation risk affects the parental behaviour of a...

Distinct patterns of brain Fos expression in Carioca High- and Low-conditioned Freezing Rats

Laura León, Marcus Brandão, Fernando Cardenas, Diana Parra, Thomas Krahe, A.Pedro Mello-Cruz & J Landeira-Fernandez
Background The bidirectional selection of high and low anxiety-like behavior is a valuable tool for understanding the neurocircuits that are responsible for anxiety disorders. Our group developed two breeding lines of rats, known as Carioca High- and Low-conditioned Freezing (CHF and CLF), based on defensive freezing in the contextual fear conditioning paradigm. A random selected line was employed as a control (CTL) comparison group for both CHF and CLF lines of animals. The present study...

A novel Sporothrix brasiliensis genomic variant in Midwestern Brazil: evidence for an older and wider sporotrichosis epidemic

João Eudes Filho, Isabele Barbieri dos Santos, Carmélia Matos Santiago Reis, José Salvatore Leister Patané, Verenice Paredes, João Paulo Romualdo Alarcão Bernardes, Sabrina dos Santos Costa Poggiani, Talita de Cássia Borges Castro, Oscar Mauricio Gomez, Sandro Antonio Pereira, Edvar Yuri Pacheco Schubach, Kamila Peres Gomes, Heidi Mavengere, Lucas Gomes de Brito Alves, Joaquim Lucas, Hugo Costa Paes, Patrícia Albuquerque, Laurício Monteiro Cruz, Juan G. McEwen, Jason E. Stajich, Rodrigo Almeida-Paes, Rosely Maria Zancopé-Oliveira, Daniel R. Matute, Bridget M. Barker, Maria Sueli Soares Felipe … & André Moraes Nicola
Sporotrichosis is a subcutaneous infection caused by fungi from the genus Sporothrix. It is transmitted by inoculation of infective particles found in plant-contaminated material or diseased animals, characterizing the classic sapronotic and emerging zoonotic transmission, respectively. Since 1998, southeastern Brazil has experienced a zoonotic sporotrichosis epidemic caused by S. brasiliensis, centred in the state of Rio de Janeiro. Our observation of feline sporotrichosis cases in Brasília (Midwestern Brazil), around 900 km away from Rio de...

Elements of fish metacommunity structure in Neotropical freshwater streams

Thiago Bernardi Vieira, Leandro Schlemmer Brasil, Liriann Chrisley Nascimento Da Silva, Francisco Leonardo Tejerina Garro, Pedro De Podestà Uchôa De Aquino, Paulo Santos Pompeu & Paulo De Marco
The identification of the mechanisms underlying co-occurrence patterns of species is a way to identify which processes (niche, neutral or both) structure metacommunities. In this paper, our goals are to identify patterns of co-occurrence in neotropical stream fish and determine which processes structure the metacommunity and the gradients that underlie this structure. Our results pointed out that the metacommunity formed by the total pool of species is structured by a nested pattern (Hyperdispersed Species Loss)...

Seasonal isotopic niche of a rodent: High between-individual variation but no changes in individual niche width during the rich-resource period

Nícholas Camargo, Guilherme Reis, Anna Camargo, Gabriela Nardoto, Jamie Kneitel & Emerson Vieira
The dynamics of trophic niche width in animals at both population- and individual-level is potentially influenced by temporal variation of food resources, by between-individual differences in food-resource rank preferences, and also by competition. Using stable isotope of carbon and nitrogen (δ13C and δ15N) of fecal samples, we investigated the trophic niche dynamics and individual variation in food-resource use by the arboreal rat Rhipidomys macrurus, in the highly seasonal Brazilian savanna (Cerrado). We tested the hypothesis...

Data from: Genetic switches designed for eukaryotic cells and controlled by serine integrases

Mayna Gomide, Thais Sales, Luciana Barros, Cintia Limia, Marco Antônio Oliveira, Lilian Florentino, Leila Barros, Maria Laura Robledo, Gustavo José, Mariana Almeida, Rayane Lima, Stevens Rehen, Cristiano Lacorte, Eduardo Melo, André Murad, Martín Bonamino, Cintia Coelho & Elibio Rech
Recently, new serine integrases have been identified, increasing the possibility of scaling up genomic modulation tools. Here, we describe the use of unidirectional genetic switches to evaluate the functionality of six serine integrases in different eukaryotic systems: the HEK 293T cell lineage, bovine fibroblasts and plant protoplasts. Moreover, integrase activity was also tested in human cell types of therapeutic interest: peripheral blood mononuclear cells (PBMCs), neural stem cells (NSCs) and undifferentiated embryonic stem (ES) cells....

Highways are a threat for giant armadillos (Priodontes maximus) that underpasses can mitigate

Aureo Banhos, Bruno Fontes, Debora Yogui, Mario Henrique Alves, Natália Carneiro Ardente, Renata Valls, Lucas Mendes Barreto, Lucas Damásio, Átilla Colombo Ferreguetti, Andréa Siqueira Carvalho, Vitor Roberto Schettino, Alexandre Rosa Dos Santos, Helena Godoy Bergallo, Ana Carolina Srbek-Araujo, Patricia Medici, Ariel Canena & Arnaud Desbiez
We report 22 records of giant armadillo roadkill on Brazilian highways in the Cerrado, Pantanal and Amazon biomes illustrating that highways are a threat to this species. However, we also documented the species using underpasses, demonstrating that these structures could help to reduce the risk of roadkill for giant armadillos.

Palms and trees resist extreme drought in Amazon forests with shallow water tables

Thaiane Sousa, Juliana Schietti, Fernanda Coelho De Souza, Adriane Esquivel-Muelbert, Igor Ribeiro, Thaise Emilio, Pedro Pequeno, Oliver Phillips & Flavia Costa
1. The intensity and frequency of severe droughts in the Amazon region has increase in recent decades. These extreme events are associated with changes in forest dynamics, biomass and floristic composition. However, most studies of drought response have focused on upland forests with deep water tables, which may be especially sensitive to drought. Palms, which tend to dominate the less well-drained soils, have also been neglected. The relative neglect of shallow water tables and palms...

Registration Year

  • 2020
    22

Resource Types

  • Dataset
    21
  • Data Paper
    1

Affiliations

  • University of Brasília
    22
  • Universidade Federal de Goiás
    4
  • National Institute of Amazonian Research
    4
  • Universidade Católica de Brasília
    3
  • Federal University of Lavras
    2
  • Instituto Butantan
    2
  • University of California, Riverside
    2
  • Oswaldo Cruz Foundation
    2
  • Instituto Chico Mendes de Conservação da Biodiversidade
    2
  • State University of Campinas
    2