27 Works

Data from: Dynamics of coral reef benthic assemblages of the Abrolhos Bank, eastern Brazil: inferences on natural and anthropogenic drivers

Ronaldo B. Francini-Filho, Ericka O. C. Coni, Pedro M. Meirelles, Gilberto M. Amado-Filho, Fabiano L. Thompson, Guilherme H. Pereira-Filho, Alex C. Bastos, Douglas P. Abrantes, Camilo M. Ferreira, Fernando Z. Gibran, Arthur Z. Güth, Paulo Y. G. Sumida, Nara L. Oliveira, Les Kaufman, Carolina V. Minte-Vera & Rodrigo L. Moura
The Abrolhos Bank (eastern Brazil) encompasses the largest and richest coral reefs of the South Atlantic. Coral reef benthic assemblages of the region were monitored from 2003 to 2008. Two habitats (pinnacles’ tops and walls) were sampled per site with 3-10 sites sampled within different reef areas. Different methodologies were applied in two distinct sampling periods: 2003-2005 and 2006-2008. Spatial coverage and taxonomic resolution were lower in the former than in the latter period. Benthic...

EVALUATION OF THE EFFECTS OF GLYCOSAMINOGLYCANS ON THE ACTIVITY OF CYSTEINE PROTEASE CATHEPSIN INHIBITORS

WAGNER ALVES DE SOUZA JÚDICE
Cathepsins B and L, cysteine ​​lysosomal proteases, are important targets in the development of a variety of therapeutic agents due to the involvement of these proteases in various disease conditions. They are associated with cancer progression due to the degradation capacity of the extracellular matrix, facilitating invasion, angiogenesis and metastasis, in addition to favoring viral replication in human cells. Studies suggest that GAGs play a key role in cell signaling, which serves to modulate a...

Brazilian Citizen Science Open Platform

Bruno Albertini
Citizen science has been standing out as a form of social engagement of the population in projects with a scientific nature. With the participation of scientists, the techniques and platforms applied to citizen science provide data collection that is otherwise impractical due to the geographic reach and frequency of observation, known to be high in citizen science approaches. Current platforms take advantage of mobile personal devices, notably smartphones, due to their connectivity and dispersion among...

Data from: Being a bright snake: testing aposematism and mimicry in a Neotropical forest

Karina Banci, André Eterovic, Patrícia Marinho & Otavio Marques
Based on color patterns and behavioral similarities, venomous coral snake Micrurus corallinus (Elapidae) may act as a model for two polymorphic species, Erythrolamprus aesculapii (Dipsadidae) and Micrurus decoratus (Elapidae). Plasticine replicas were used to investigate the aposematism of these coloration patterns and whether these species may be part of mimetic complexes in two Atlantic Forest localities in South-east Brazil. Coral replicas were more avoided when set upon a white background, evincing that the pattern may...

Count Data Regression Analysis: Concepts, Overdispersion Detection, Zero-inflation Identification, and Applications with R

Luiz Paulo Fávero, Rafael de Freitas Souza, Patrícia Belfiore, Hamilton Luiz Corrêa & Michael F. C. Haddad
In this paper is proposed a straightforward model selection approach that indicates the most suitable count regression model based on relevant data characteristics. The proposed selection approach includes four of the most popular count regression models (i.e. Poisson, negative binomial, and respective zero-inflated frameworks). Moreover, it addresses two of the most relevant problems commonly found in real-world count datasets, namely overdispersion and zero-inflation. The entire selection approach may be performed using the programme language R,...

Restoration priorities for Caatinga dry forests: landscape resilience, connectivity and biodiversity value

Marina Antongiovanni, Eduardo Venticinque, Leandro Tambosi, Matsumoto Marcelo, Jean Paul Metzger & Carlos Roberto Fonseca
1. Restoration actions can halt biodiversity loss and rescue its services. However, in order to be effective, priority areas for restoration should be chosen based on objective large-scale restoration planning. Here, a multi-criteria graph theory (GT) framework is proposed to indicate priority areas for active restoration, based on landscape resilience, landscape connectivity, and biodiversity conservation value, focusing on threatened endemic plant species. 2. We applied this GT framework to 10,406 catchment basins of the Brazilian...

Data from: Systematics of spiny-backed treefrogs (Hylidae: Osteocephalus): an Amazonian puzzle

Karl-Heinz Jungfer, Julián Faivovich, José M. Padial, Santiago Castroviejo-Fisher, Mariana M. Lyra, Bianca Von Muller Berneck, Patricia P. Iglesias, Philippe J. R. Kok, Ross T. Macculloch, Miguel Trefaut Rodrigues, Vanessa K. Verdade, Claudia P. Torres Gastello, Juan Carlos Chaparro, Paula H. Valdujo, Steffen Reichle, Jiří Moravec, Václav Gvoždík, Giussepe Gagliardi-Urrutia, Raffael Ernst, Ignacio De La Riva, Donald Bruce Means, Albertina P. Lima, J. Celsa Señaris, Ward C. Wheeler & Célio F. B. Haddad
Spiny-backed tree frogs of the genus Osteocephalus are conspicuous components of the tropical wet forests of the Amazon and the Guiana Shield. Here, we revise the phylogenetic relationships of Osteocephalus and its sister group Tepuihyla, using up to 6134 bp of DNA sequences of nine mitochondrial and one nuclear gene for 338 specimens from eight countries and 218 localities, representing 89% of the 28 currently recognized nominal species. Our phylogenetic analyses reveal (i) the paraphyly...

Higher rates of liana regeneration after canopy fall drives species abundance patterns in central Amazonia

Elisangela Rocha, Juliana Schietti, Caian Gerolamo, Robyn Burnham & Anselmo Nogueira
In tropical rainforest, most vascular plants have some capacity to resprout, and lianas are often effective resprouters after canopy fall. However, the diversity of resprouting responses of liana species and the consequence for plant persistence is poorly understood. We hypothesized that variation in regeneration among liana species causes differences in liana species abundance in tropical rainforest through differential resprouting capacity, such that liana species with higher densities produce more resprouts after canopy falls. We applied...

Data from: The effect of agriculture on the seasonal dynamics and functional diversity of benthic biofilm in tropical headwater streams

Ricardo H. Taniwaki, Christoph D. Matthaei, Tatima K. M. Cardoso, Silvio F. B. Ferraz, Luiz A. Martinelli & Jeremy J. Piggott
Tropical streams are one of the most endangered ecosystems in the world due to the constant pressures from human activities. Among these activities, agriculture represents a land use that is crucial for human development but also a key driver of stream degradation and biodiversity decline in the tropics. Against this background, we investigated indirect effects of agriculture (alterations in stream flow and nutrient availability) and climate characteristics (water temperature) on benthic biofilm communities in tropical...

Identidade, resistência e simbolismo no filme Onde sonham as formigas verdes (1984), de Werner Herzog

Thais Silva & Elias Martinez

Effect of diet on the bacterial diversity of termite guts

Alberto Arab
A evolução da relação simbiótica com microrganismos permitiu aos cupins decompor a lignocelulose ingerida de substratos derivados de plantas, incluindo fezes de herbívoros e húmus. Entretanto, alguns aspectos da digestão da lignocelulose nos cupins que perderam evolutivamente a associação com protozoários (aqueles da família Termitidae) ainda são pouco conhecidos e constituem uma boa oportunidade para avaliar questões relacionadas à ecologia alimentar no contexto da evolução e adaptação desse grupo. O objetivo geral desta proposta é...

Síntese e investigação de novas formas cristalinas de fármacos antineoplásicos

Fabio Furlan Ferreira
O principal objetivo deste projeto é otimizar o desempenho do medicamento antineoplásico melfalano e do candidato a fármaco LASSBio-1735, tanto pelo desenvolvimento de novas formas cristalinas quanto pela liberação controlada dos mesmos. Como o melfalano - um medicamento antineoplásico usado para tratar câncer de mama e ovário e mieloma múltiplo - não possui estrutura cristalina conhecida, a primeira etapa deste projeto e, consequentemente, o primeiro resultado a ser obtido será a determinação de sua estrutura...

A new Unenlagiinae (Theropoda: Dromaeosauridae) from the Late Cretaceous of Brazil

Arthur Souza Brum, Rodrigo Vargas Pêgas, Kamila Luisa Nogueira Bandeira, Lucy Gomes De Souza, Diogenes De Almeida Campos & Alexander Wilhelm Armin Kellner
The record of unenlagiines in Brazil, except for one dorsal vertebra, is still under debate based on isolated teeth. Here, we describe Ypupiara lopai gen. et sp. nov., the first undoubtful nominal unenlagiine dromaeosaurid species from Brazil, from the Marília Formation (Maastrichtian), Bauru Group, Paraná Basin. The specimen comprises a partial right maxilla (with three teeth in loci) and a right dentary. Ypupiara is characterized by the morphology of the maxilla, presenting restrict number of...

Data from: Cytogenetics, geographic distribution, conservation and new species of Macrotorus (Mollinedioideae, Monimiaceae) from the Brazilian Atlantic rainforest

Elton John De Lirio, Paulo Ricardo De Oliveira Costa, Ariane Luna Peixoto, Paulo Takeo Sano & Ana Paula Moraes
A new species of Macrotorus (Monimiaceae) from the Brazilian Atlantic rainforest is here described and illustrated: M. genuflexus. This species, restricted to the Poço das Antas Biological Reserve (situated in the central region of Rio de Janeiro state, Brazil), is the second in the genus Macrotorus. The new species description is based on morphological and cytogenetic (karyotype and genome size - GS) comparative analyses. We also report a new record of Macrotorus utriculatus for the...

Variation in the production of plant tissues bearing extrafloral nectaries explains temporal patterns of ant attendance in Amazonian understory plants

Anselmo Nogueira, Fabricio Baccaro, Laura Leal, Pedro Rey, Lúcia Lohmann & Judith Bronstein
1. Information on direct and indirect drivers of temporal variation in ant-plant interactions is scarce, compromising our ability to predict the functioning of these ecologically important interactions. 2. We investigated the roles of precipitation, ant activity, abundance of young plant tissues bearing extrafloral nectaries (EFNs), and EFN phenotypes in the establishment of EFN-mediated ant-plant interactions throughout the year in Amazonia, Brazil. We hypothesized that the frequency of ant-plant interactions follows a predictable seasonal pattern, being...

Coronavirus prevalence in Brazilian Amazon and Sao Paulo city

Tassila Salomon, Oliver Pybus, Rafael França, Marcia Castro, Ester Cerdeira Sabino, Christopher Dye, Michael Busch, Moritz U. G. Kraemer, Charles Whittaker, Andreza Santos, Nuno Faria, Rafael Pereira, Lewis Buss, , Claudia Abrahim, Maria Carvalho, Allyson Costa, Manoel Barral-Netto, Crispim Myuki, Brian Custer, Cesar De Almeida-Neto, Suzete Ferreira, Nelson Fraiji, Susie Gurzenda, Leonardo Kamaura … & Maria Belotti
SARS-CoV-2 spread rapidly in the Brazilian Amazon. Mortality was elevated, despite the young population, with the health services and cemeteries overwhelmed. The attack rate in this region is an estimate of the final epidemic size in an unmitigated epidemic. Here we show that by June, one month after the epidemic peak in Manaus, capital of the Amazonas state, 44% of the population had detectable IgG antibodies. This equates to a cumulative incidence of 52% after...

Data from: Balanced spatial distribution of green areas creates healthier urban landscapes

Douglas W. Cirino, Leandro Reverberi Tambosi, Thais Mauad, Simone Rodrigues Freitas & Jean Paul Metzger
The benefits of green infrastructure on human well-being in urban areas are already well established, with strong evidence of the positive effects of the amount and proximity to green areas. However, the understanding of how the spatial distribution and type of green areas affect health is still an open question. Here, we explore how different spatial configurations of green and built-up areas, through a land sharing and sparing framework, and how different types of green...

Data from: SARS-CoV-2 antibody dynamics in blood donors and COVID-19 epidemiology in eight Brazilian state capitals

, Lewis F. Buss, Charles Whittaker, Tassila Salomon, Marcio K. Oikawa, Rafael H. M. Pereira, Isabel C. G. Moura, Lucas Delerino, Manoel Barral-Netto, Natalia M. Tavares, Rafael F. O. França, Viviane S. Boaventura, Fabio Miyajima, Alfredo Mendrone-Junior, César De Almeida Neto, Nanci A. Salles, Suzete C. Ferreira, Karine A. Fladzinski, Luana M. De Souza, Luciane K. Schier, Patricia M. Inoue, Lilyane A. Xabregas, Myuki A. E. Crispim, Nelson Fraiji, Fernando L. V. Araujo … & Ester C. Sabino
The COVID-19 situation in Brazil is complex due to large differences in the shape and size of regional epidemics. Here we tested monthly blood donation samples for IgG antibodies from March 2020 to March 2021 in eight of Brazil’s most populous cities. The inferred attack rate of SARS-CoV-2 adjusted for seroreversion in December 2020, before the Gamma VOC was dominant, ranged from 19.3% (95% CrI 17.5% - 21.2%) in Curitiba to 75.0% (95% CrI 70.8%...

Data from: Ultraconserved elements sequencing as a low-cost source of complete mitochondrial genomes and microsatellite markers in non-model amniotes

Fábio Raposo Do Amaral, Leandro G. Neves, , Flávia Mobili, Cristina Y. Miyaki, Katia C. M. Pellegrino & Cibele Biondo
Sequence capture of ultraconserved elements (UCEs) associated with massively parallel sequencing has become a common source of nuclear data for studies of animal systematics and phylogeography. However, mitochondrial and microsatellite variation are still commonly used in various kinds of molecular studies, and probably will complement genomic data in years to come. Here we show that besides providing abundant genomic data, UCE sequencing is an excellent source of both sequences for microsatellite loci design and complete...

Data from: The world’s biogeographical regions revisited: global patterns of endemism in Tipulidae (Diptera)

Guilherme C. Ribeiro, Charles M. D. Santos, Luigi T. Olivieri, Daubian Santos, Juliana M. Berbert & André Eterovic
This paper explores the distributional data of 4,224 Tipulidae (Insecta: Diptera) species to search for endemism patterns in a worldwide scale and to test the extent to which the global patterns of endemism of the group fit into previously proposed regionalization schemes, particularly Wallace’s system and recent revisions of it. Large scale areas of endemism are assessed using the grid-based method implemented in VNDM. VNDM depends on the prior definition of the grid size for...

Data from: An affordable apparatus for fine‐controlled emulation of buzzing frequencies of bees for the testing hypothesis in buzz interactions

Ernani V. Rodrigues, Júlia R. Riguete, Henrique R.C. Pereira, Juliétty A. Tesch & Ary G. Silva
1. The buzzing foraging behavior of female bees for pollen harvesting called the attention of early pollination biologists. Flower-types that demand this buzzing behavior comprise about 20.000 species of different and phylogenetically unrelated plant taxa, suggesting that it had independently evolved many times among the flowering plants. Between the late 70’s and early 80’s, theoretical papers had modeled the energetics of buzz-pollination, but, up to this moment, no hypothesis was experimentally tested concerning the theoretical...

Calcareous defense structures of prey mediate the effects of predation and biotic resistance towards the tropics

Gustavo M Dias, Edson A Vieira, Lueji Pestana, Antonio C Marques, Simon Karythis, Stuart R Jenkins & Katherine Griffith
Aims The importance of biotic interactions in creating and maintaining diversity is expected to increase toward low latitudes. However, the way in which predation affects diversity, can depend on how predators mediate competitive interactions and also on defensive traits of prey. Here we assessed the role of physical defences of prey to escape predation and how the importance of predation on community structure and diversity changes across latitude. Location Six sites, in three regions distributed...

The role of non-glandular emergences in Croton floribundus (Euphorbiaceae) upon elevated ozone exposures

Márcia Gonçalves Dias, Bárbara Baêsso Moura, Giselle Da Silva Pedrosa, Silvia Ribeiro De Souza & Poliana Cardoso-Gustavson
The role of non-glandular emergences in avoiding ozone (O3) damages by preventing its entrance into leaf tissues was previously suggested to the O3-tolerant species Croton floribundus (Euphorbiaceae). However, this function against O3 damage has been underestimated due to the covering wax layer mostly composed of saturated hydrocarbon with low reactivity to this gas. To evaluate the role of these structures in conferring tolerance to O3, we mechanically removed the non-glandular emergences from leaf blades of...

Spatial analysis of the vulnerability of water wells and aquifers in the Alto Tietê basin

Rodrigo Nehara
Groundwater is defined as waters located below ground level, which is considered an adequate source for supply, in addition to having advantages such as being a safe source in times of drought, excellent natural quality and great storage capacity in aquifers. However, contaminating activities of an anthropic nature directly affect their quality. One way to protect groundwater is to study, assess and know the vulnerability of the respective aquifers and water bodies, which guide the...

Filogenômica e macroecologia em Orchidaceae: integrando a citogenética e a ecologia no estudo da evolução de orquídeas neotropicais

Ana Moraes
A existência de associações entre os caracteres citogenéticos, em especial a ploidia, e as características ecológicas, como a colonização de ambientes extremos, foi inicialmente proposta a quase um século, mas ainda hoje são poucos os estudos que avaliam se tais associações representam tendências gerais em plantas ou são resultados de casos pontuais. Tais análises macroecológicas, integrando dados citogenéticos e ecológicos, dependem obrigatoriamente de um background evolutivo que só pode ser oferecido por hipóteses filogenéticas robustas,...

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