190 Works

Data from: Barriers, rather than refugia, underlie the origin of diversity in toads endemic to the Brazilian Atlantic Forest

Maria Tereza C. Thomé, Kelly R. Zamudio, Célio F. B. Haddad & João Alexandrino
In this study, we investigated the relative contribution of geographic barriers and Pleistocene refuges in the diversification of the Rhinella crucifer species complex, a group of endemic toads with a widespread distribution in the Brazilian Atlantic Forest (AF). We used intensive sampling and multilocus DNA sequence data to compare nucleotide diversity between refuge and nonrefuge areas, investigate regional demographic patterns, estimate demographic parameters related to genetic breaks and test refuge versus barrier scenarios of diversification...

Worldwide evidence of a unimodal relationship between productivity and plant species richness

Lauchlan H. Fraser, Jason Pither, Anke Jentsch, Marcelo Sternberg, Martin Zobel, Diana Askarizadeh, Sandor Bartha, Carl Beierkuhnlein, Jonathan A. Bennett, Alex Bittel, Bazartseren Boldgiv, Ilsi I. Boldrini, Edward Bork, Leslie Brown, Marcelo Cabido, James Cahill, Cameron N. Carlyle, Giandiego Campetella, Stefano Chelli, Ofer Cohen, Anna-Maria Csergo, Sandra Diaz, Lucas Enrico, David Ensing, Alessandra Fidelis … & Szilárd Szentes
The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and...

Data from: Transcontinental dispersal, ecological opportunity and origins of an adaptive radiation in the Neotropical catfish genus Hypostomus (Siluriformes: Loricariidae)

Gabriel Silva, Fabio Roxo, Nathan Lujan, Victor Tagliacolo, Cláudio Zawadzki, Claudio Oliveira, Victor A. Tagliacollo & Nathan K. Lujan
Ecological opportunity is often proposed as a driver of accelerated diversification, but evidence has been largely derived from either contemporary island radiations or the fossil record. Here, we investigate the potential influence of ecological opportunity on a transcontinental radiation of South American freshwater fishes. We generate a species-dense, time-calibrated molecular phylogeny for the suckermouth armored catfish subfamily Hypostominae, with a focus on the species-rich and geographically widespread genus Hypostomus. We use the resulting chronogram to...

Data from: Phylogenetic relationships of toads of the Rhinella granulosa group (Anura: Bufonidae): a molecular perspective with comments on hybridization and introgression

Martín O. Pereyra, Diego Baldo, Boris L. Blotto, Patricia P. Iglesias, Maria T. C. Thomé, Célio F. B. Haddad, César Barrio-Amorós, Roberto Ibáñez & Julián Faivovich
The Rhinella granulosa group consists of 13 species of toads distributed throughout open areas of South America and Panama. In this paper we perform a phylogenetic analysis considering all but one species of the group, employing five nuclear and four mitochondrial genes, for up to 7910 bp per specimen. Separate phylogenetic analyses under direct optimization (DO) of nuclear and mitochondrial sequences recovered the R. granulosa group as monophyletic and revealed topological incongruence that can be...

Genomic selection signatures in farmed Colossoma macropomum from tropical and subtropical regions in South America

Vito Mastrochirico Filho
Tambaqui or cachama (Colossoma macropomum) is one of the most important neotropical freshwater fish used for aquaculture in South America, and its production is concentrated at low latitudes (close to the Equator, 0°), where the water temperature is warm. Therefore, understanding how selection shapes genetic variations and structure in farmed populations is of paramount importance in evolutionary biology. High-throughput sequencing to generate genome-wide data for fish species allows for elucidating the genomic basis of adaptation...

Impact of intercept trap type on plume structure: a potential mechanism for differential performance of intercept trap designs for Monochamus species

Marc C. Bouwer, Chris J. K. MacQuarrie, Oniel J. Aguirre-Gil, Bernard Slippers & Jeremy D. Allison
Studies have demonstrated that semiochemical-baited intercept traps differ in their performance for sampling insects, but we have an incomplete understanding of how and why intercept trap design effects vary among insects. This can significantly delay both the development of new and optimization of existing survey and detection tools. The development of a mechanistic understanding of why trap performance varies within and among species would mitigate this delay. The primary objective of this study was to...

Data from: Seed-dispersal networks in tropical forest fragments: area effects, remnant species, and interaction diversity

Carine Emer, Pedro Jordano, Marco Aurélio Pizo, Milton Cezar Ribeiro, Fernanda Ribeiro Da Silva & Mauro Galetti
Seed dispersal interactions involve key ecological processes in tropical forests that help to maintain ecosystem functioning. Yet this functionality may be threatened by increasing habitat loss, defaunation and fragmentation. However, generalist species, and their interactions, can benefit from the habitat change caused by human disturbance while more specialized interactions mostly disappear. Therefore changes in the structure of the local, within fragment, networks can be expected. Here we investigated how the structure of seed-dispersal networks changes...

Data from: Accelerated diversification explains the exceptional species richness of tropical characoid fishes

Bruno Melo, Brian Sidlauskas, Thomas Near, Fabio Roxo, Ava Ghezelayagh, Luz Ochoa, Melanie Stiassny, Jairo Arroyave, Jonathan Chang, Brant Faircloth, Daniel MacGuigan, Richard Harrington, Ricardo Benine, Michael Burns, Kendra Hoekzema, Natalia Sanches, Javier Maldonado-Ocampo, Ricardo Castro, Fausto Foresti, Michael Alfaro & Claudio Oliveira
The Neotropics harbor the most species-rich freshwater fish fauna on the planet, but the timing of that exceptional diversification remains unclear. Did the Neotropics accumulate species steadily throughout their long history, or attain their remarkable diversity recently? Biologists have long debated the relative support for these museum and cradle hypotheses, but few phylogenies of megadiverse tropical clades have included sufficient taxa to distinguish between them. We used 1288 ultraconserved element loci spanning 293 species, 211...

Data from: Isotopic niches of tropical birds reduced by anthropogenic impacts: A 100-year perspective

Ana B. Navarro, Marcelo Magioli, Juliano A. Bogoni, Luís F. Silveira, Marcelo Z. Moreira, Eduardo R. Alexandrino, Daniela T. A. Luz, Wesley R. Silva, Marco A. Pizo, Vanessa C. Oliveira & Katia M. P. M. B. Ferraz
The intensification of land use changes in tropical forests during the 20th century, mainly caused by deforestation for agricultural uses, had an overwhelming influence on bird assemblages. However, how these historical anthropogenic changes have impacted the habitat use and diet of tropical birds is poorly known. Stable isotope analysis (δ13C and δ15N) can be useful in this regard since it provides information not only on the habitat and food resource use but also insights on...

Many roads to success: Different combinations of life-history traits provide accurate germination timing in seasonally dry environments

Diego Fernando Escobar, Rafael Rubio De Casas & Leonor P. Cerdeira Morellato
Germination timing is determined by several plant life-history traits. Seed dormancy regulates the time and place of early plant development and spreads recruitment risks over time. Dispersal phenology and syndrome can influence germination timing and buffer spatial heterogeneity. The ecological requirements for germination (the germination niche) can also influence when and where germination takes place. To date, the relative importance of each of these four traits to ensure the phenological adaptation of individual species in...

Enduring evolutionary embellishment of cloudinids

Tae-Yoon Park, Jikhan Jung, Mirinae Lee, Sangmin Lee, Yong Yi Zhen, Hong Hua, Lucas V. Warren & Nigel C. Hughes
The Ediacaran–Cambrian transition and the following Cambrian Explosion are among the most fundamental events in the evolutionary history of animals. Understanding these events is enhanced when phylogenetic linkages can be established among animal fossils across this interval and their trait evolution monitored. Doing this is challenging because the fossil record of animal lineages that span this transition is sparse, preserved morphologies generally simple, and lifestyles in the Ediacaran and Cambrian quite different. Here we identify...

A Relevância dos Pequenos Corpos em Dinâmica Orbital

Othon Winter
In orbital dynamics, minor bodies are those that have size (and mass) much smaller than at least one of the other bodies (called primaries) of the system that belong to. One case very common in astronautics is the case of a spacecraft traveling within the Sun-Earth-Moon system. This kind of characteristic makes the dynamics of the system to present some peculiarities. One of them is the fact that the minor body, in general, does not...

Combinação de óxidos semicondutores com óxido de grafeno reduzido visando aplicações em optoeletrônica

Cristina Freitas Bueno
A ideia é explorar a combinação de óxidos semicondutores, principalmente SnO2 e TiO2, com estruturas baseadas no grafeno para estudar o transporte elétrico, e contribuir para a obtenção de novos materiais e novos dispositivos baseados nessas estruturas híbridas. A alta transparência da camada superior de óxido permite a modulação da condutividade com a excitação óptica e a possibilidade de obtenção de materiais 2D avançados, pode gerar combinações inéditas, de alto apelo científico e tecnológico. Neste...

CARACTERIZAÇÃO AGRONÔMICA E ANÁLISE DA METILAÇÃO GLOBAL EM ACESSOS DE FIGUEIRAS PARA DIFERENCIAÇÃO VARIETAL E COMPORTAMENTAL

Maria Gabriela Fontanetti Rodrigues
A fruticultura tem se constituído em importante estratégia econômica alternativa para a reprodução social dos pequenos produtores rurais, e a região de Dracena é salientada pela expressividade desta atividade, destacando-se as culturas da uva e da acerola. A figueira (Ficus carica L.) é uma frutífera de grande importância mundial, podendo ser implantada como nova atividade agrícola, agregando importantes vantagens para a região, tanto do ponto de vista econômico quanto social. Em conjuntura a esses fatores,...

Arcabouço de Beta tricálcio fosfato (ß-TCP) carreado com células tronco mesenquimais para reconstrução de grandes defeitos em mandíbulas de “mini-pigs”

Tiburtino De Neto
O objetivo desta proposta é avaliar a eficácia de um arcabouço de beta tricálcio fosfato (“3D printed”) carreado com células tronco mesenquimais ou BMP-2 na reconstrução de defeitos ósseos em mandíbulas de “mini pigs”. Para isso, será inicialmente realizada a aquisição e confecção dos blocos de ß-TCP, obtenção da rhBMP-2 e isolamento e cultura de células tronco mesenquimais de tecido adiposo dos animais. Em seguida, para estudo do reparo ósseo em modelo animal, 12 mini...

Diagnostic, prognostic and therapeutic approach of HER2 overexpression in canine mammary neoplasms

Antonio Fernando Leis Filho
Mammary gland neoplasms are the most common type of cancer in female dogs with half of these being malignant. The life expectancy of animals diagnosed with this disease is generally low. Due to the difficulty in treatment and the high prevalence of mammary gland cancer, the identification of diagnostic, prognostic and therapeutic factors is very important. HER2 is a tyrosine kinase receptor with great relevance in human breast neoplasms, and its overexpression is linked to...

Modificações epigenéticas transgeracionais em resposta ao estresse térmico nas células germinativas masculinas de truta arco-íris Oncorhynchus mykiss

Arno Juliano Butzge
Os peixes apresentam grande vulnerabilidade a alterações do ambiente circundante, as propriedades físico-químicas da água como temperatura, pH, concentração de oxigênio e salinidade, exercem grande influência na sua fisiologia e a variação desses parâmetros apresentam desafios à manutenção da homeostase, exigindo respostas adaptativas. Exposições a altas temperaturas, por exemplo, podem afetar a proliferação, diferenciação ou mesmo a sobrevivência das células germinativas, comprometendo a fertilidade e, portanto, a capacidade reprodutiva das espécies. Num estudo recente em...

O papel de fatores derivados de biofilmes na sinalização celular. Mecanismos de morte e proliferação celular

Paula Barbugli
Biofilmes são comunidades de micro-organismos com função e estrutura organizadas em uma matriz extracelular própria. A maioria dos processos infecciosos está relacionada à presença de biofilmes polimicrobianos, formados, por exemplo, por micro-organismos comensais juntamente com patógenos oportunistas. Tais biofilmes polimicrobianos são formados por uma ampla variedade de espécies, incluindo bactérias e fungos, como Staphylococcus aureus e Candida albicans. A patofisiologia de C. albicans e S. aureus está intimamente relacionada à produção de fatores de virulência...

O uso das redes sociais por Bibliotecas Universitárias durante a quarentena devido à pandemia de COVID-19

Marisa Cubas Lozano
Devido a pandemia de COVID-19, no ano de 2020 foi necessário fazer uma quarentena a fim de evitar o avanço do doença. Assim, a universidades precisaram suspender as aulas presenciais e as bibliotecas passaram a ofertar seus produtos e serviços de forma remota. Para isso foi necessário explorar canais digitais, como e-mail, site institucional e redes socias online. Neste trabalho, o objetivo foi compreender a apropriaçao das redes sociais online pelas bibliotecas universitárias no início...

Development and evaluation of the properties of a new cement based on sodium hexametaphosphate

Leonardo Antônio Morais
Este estudo tem dois objetivos principais: 1) Desenvolver e avaliar as propriedades físico-mecânicas de um novo cimento à base de hexametafosfato de sódio (HMP) e avaliar sua atividade antimicrobiana e 2) avaliar a citotoxicidade e biocompatibilidade do novo cimento em um modelo em vida. Primeiramente, pretende-se desenvolver um cimento à base de HMP, Óxido de Zircônio IV (ZrO2), Hidróxido de Cálcio (Ca (OH) 2) e Clinker (Cq) contendo carboximetilcelulose (CMC). Em seguida, será definida a...

PLATAFORMAS DIGITAIS PARA PROMOÇÃO E COMERCIALIZAÇÃO DE PRODUTOS DA AGRICULTURA FAMILIAR

Amanda Fracari De Souza
A agricultura familiar é responsável por grande parte da produção de alimentos em território nacional brasileiro e sua produção em âmbito internacional também é presente, neste caso, a promoção e comercialização dos produtos por meio das plataformas digitais deste ambiente se torna importante para alcançar benefícios para estes produtores. Além dos benefícios, os desafios na utilização das plataformas digitais para promoção e comercialização dos produtos pelos agricultores familiares são presentes e alguns recursos e investimentos...

Promovendo os 17 Objetivos do Desenvolvimento Sustentável: a partir da atual fase neoliberal do capitalismo ou de uma via de desenvolvimento territorial camponesa e popular

Gerson Antonio Barbosa Borges
Em decorrência do modo de produção capitalista expresso desde 1870 pelos Regimes Alimentares na agricultura, a humanidade enfrenta vastas crises que atingem dimensões sociais, econômicas e ecológicas. A Organização das Nações Unidas (ONU), desde sua criação no Pós-Segunda Guerra Mundial, mostra preocupação acerca dessas questões, apresentando recomendações e implementando acordos em suas conferências e cúpulas, as quais reúnem os Estados signatários. O último grande acordo, pactuado em 2015, é a Agenda 2030, que reúne os...

Data from: Environmental and spatial effects on coastal stream fishes in the Atlantic rainforest

Cristina Gonçalves, Robert Holt, Mary Christman & Lilian Casatti
Contemporary and historical factors influence assemblage structure. The environmental and spatial influences acting on fish organization of rainforest coastal streams in the Atlantic rainforest of Brazil were examined. Fish (and functional traits such as morphology, diet, velocity preference, body size), environmental variables (pH, water conductivity, dissolved oxygen, temperature, stream width, flow, depth, substrate) and altitude were measured from 59 stream reaches. Asymmetric eigenvector maps were used to model the spatial structure considering direction of fish...

Data from: Distribution and functionality of copy number variation across European cattle populations

Maulik Upadhyay, Vinicius H. Da Silva, Hendrik-Jan Megens, Marleen H. P. W. Visker, Paolo Ajmone-Marsan, Valentin A. Bâlteanu, Susana Dunner, Jose Fernando Garcia, Catarina Ginja, Juha Kantanen, Martien A.M. Groenen, Richard P.M.A. Crooijmans, Vinicus H. Da Silva, Martien A. M. Groenen & Richard P. M. A. Crooijmans
Copy number variation (CNV), which is characterized by large-scale losses or gains of DNA fragments, contributes significantly to genetic and phenotypic variation. Assessing CNV across different European cattle populations might reveal genetic changes responsible for phenotypic differences, which have accumulated throughout the domestication history of cattle as consequences of evolutionary forces that act upon them. To explore pattern of CNVs across European cattle, we genotyped 149 individuals, that represent different European regions, using the Illumina...

Data from: Moving in the Anthropocene: global reductions in terrestrial mammalian movements

Marlee A. Tucker, Katrin Böhning-Gaese, William F. Fagan, John M. Fryxell, Bram Van Moorter, Susan C. Alberts, Abdullahi H. Ali, Andrew M. Allen, Nina Attias, Tal Avgar, Hattie Bartlam-Brooks, Buuveibaatar Bayarbaatar, Jerrold L. Belant, Alessandra Bertassoni, Dean Beyer, Laura Bidner, Floris M. Van Beest, Stephen Blake, Niels Blaum, Chloe Bracis, Danielle Brown, P. J. Nico De Bruyn, Francesca Cagnacci, Justin M. Calabrese, Constança Camilo-Alves … & Thomas Mueller
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint were on average one-half to one-third the extent of their movements in areas with a low human footprint. We attribute this reduction to behavioral...

Registration Year

  • 2022
    28
  • 2021
    68
  • 2020
    13
  • 2019
    13
  • 2018
    12
  • 2017
    18
  • 2016
    10
  • 2015
    10
  • 2014
    6
  • 2013
    6

Resource Types

  • Dataset
    118
  • Output Management Plan
    68
  • Book Chapter
    1
  • Data Paper
    1
  • Journal Article
    1
  • Text
    1

Affiliations

  • Sao Paulo State University
    118
  • São Paulo State University
    70
  • University of Sao Paulo
    23
  • State University of Campinas
    14
  • Cornell University
    12
  • Universidade Federal de Goiás
    8
  • Federal University of São Carlos
    7
  • Estación Biológica de Doñana
    5
  • Universidade Federal de Mato Grosso
    5
  • University of Pretoria
    4