30 Works

Data and codes from: Flight hampers the evolution of weapons in birds

João C. T. Menezes & Alexandre V. Palaoro
Birds are a remarkable example of how sexual selection can produce diverse ornaments and behaviors. Specialized fighting structures like deer’s antlers, in contrast, are mostly absent among birds. Here, we investigated if the birds’ costly mode of locomotion — powered flight — helps explain the scarcity of weapons among members of this clade. Our simulations of flight energetics predicted that the cost of bony spurs — a specialized avian weapon — should increase with time...

Data from: Analysis of the PEBP gene family and identification of a novel FLOWERING LOCUS T orthologue in sugarcane

Julien Venail, Paolo Da Silva Santos, Joao Manechini, Leonardo Alves, Maximiliano Scarpari, Thais Falcao, Elisson Romanel, Michael Brito, Renato Vicentini, Luciana Pinto & Stephen Jackson
Sugarcane (Saccharum spp.) is an important economic crop for both sugar and biomass, the yields of which are negatively affected by flowering. The molecular mechanisms controlling flowering in sugarcane are nevertheless poorly understood. RNA-seq data analysis and database searches have enabled a comprehensive description of the PEBP gene family in sugarcane. It is shown to consist of at least 13 FLOWERING LOCUS T (FT)-like genes, two MOTHER OF FT AND TFL (MFT)-like genes, and four...

Hidden in the DNA: insights on how multiple historical processes and natural history traits shaped patterns of cryptic diversity in an Amazon leaf-litter lizard Loxopholis osvaldoi (Squamata: Gymnophthalmidae).

Sergio Marques De Souza, Katia Machado Pellegrino, Tuliana Oliveira Brunes, Ana Carnaval, Roberta Pacheco Damasceno, Manoela Lima De Oliveira Borges, Carlos Candia Gallardo & Miguel Rodrigues
Aim: To investigate cryptic diversity and diversification timing in the putatively low-dispersal Amazonian leaf-litter lizard Loxopholis osvaldoi, and to ask how geography (rivers, isolation by distance, IBD), ecological drivers (isolation by environment, IBE) and historical factors (climatic refugia) explain intraspecific genetic variation. Location: Central Amazonia, Brazil. Taxon: Squamata; Gymnophthalmidae; Loxopholis osvaldoi. Methods: We sequenced two mitochondrial and two nuclear markers in 157 individuals. Phylogeographic structure and the occurrence of independent evolving lineages where explored through...

Data from: Feeding effects on liver mitochondrial bioenergetics of Boa constrictor (Serpentes: Boidae)

Marina R. Sartori, Helena R. Da Mota Araujo, Claudia D.C. Navarro, Jose Eduardo De Carvalho & Andre Luis Da Cruz
Snakes are interesting examples of overcoming energy metabolism challenges as many species can endure long periods without feeding, and their eventual meals are of reasonably large sizes, thus exhibiting dual extreme adaptations. Consequently, metabolic rate increases considerably to attend to the energetic demand of digestion, absorption and, protein synthesis. These animals should be adapted to transition from these two opposite states of energy fairly quickly, and therefore we investigated mitochondrial function plasticity in these states....

Data from: Life-history traits of Tubastraea coccinea: reproduction, development, and larval competence

Bruna Luz, Maikon Di Domenico, Alvaro Migotto & Marcelo Kitahara
The sun coral Tubastraea coccinea Lesson, 1829 (Dendrophylliidae) is a widely distributed shallow-water scleractinian that has extended its range to non-native habitats in recent decades. With its rapid spread, this coral is now one of the main invasive species in Brazil. Its high invasive capability is related to opportunistic characteristics, including several reproductive strategies that have allowed it to disperse rapidly and widely. To better understand the reproductive biology of T. coccinea and aid in...

Data from: Vicariance and marine migration in continental island populations of a frog endemic to the Atlantic Coastal forest

M. Catherine Duryea, Kelly R. Zamudio & Cinthia A. Brasileiro
The theory of island biogeography is most often studied in the context of oceanic islands where all island inhabitants are descendants from founding events involving migration from mainland source populations. Far fewer studies have considered predictions of island biogeography in the case of continental islands, where island formation typically splits continuous populations and thus vicariance also contributes to the diversity of island populations. We examined one such case on continental islands in southeastern Brazil, to...

Data from: Individual factors associated with time to non-adherence to ART pick-up within HIV care and treatment services in three health facilities of Zambézia Province, Mozambique

Dercio B.C. Filimao, Troy D. Moon, Jorge F. Senise, Ricardo S. Diaz, Mohsin Sidat & Adauto Castelo
Introduction: Mozambique has made significant gains in addressing its HIV epidemic, yet adherence to visit schedules remains a challenge. HIV programmatic gains to date could be impaired if adherence and retention to ART remains low. We investigate individual factors associated with non-adherence to ART pick-up in Mozambique. Methods: This was a retrospective cohort of patients initiating ART between January 2013 and June 2014. Non-adherence to ART pick-up was defined as a delay in pick-up ?...

Valorização de metais presentes em resíduos sólidos por biomineração – BIOMETALVALUE

Danielle Maass
Anualmente, milhões de toneladas de metais são desperdiçados seja em meio a resíduos de mineração ou eletrônicos. Além da óbvia perda econômica advinda do desperdício de matéria-prima, a disposição e tratamento inadequados desses resíduos resultam em perdas ambientais incalculáveis. Tendo em vista a toxicidade e a ineficiência das tecnologias tradicionais de recuperação, a biomineração tornou-se uma tecnologia de vanguarda. O termo biomineração é utilizado para designar tecnologias que utilizam sistemas biológicos para facilitar a extração...

Data from: Evolutionary history of Scinax treefrogs on land-bridge islands in south-eastern Brazil

Rayna C. Bell, Cinthia A. Brasileiro, Celio F. B. Haddad & Kelly R. Zamudio
AIM: We investigated how Pleistocene refugia and recent (~12,000 years ago) sea level incursions shaped genetic differentiation in mainland and island populations of the Scinax perpusillus treefrog group. LOCATION: Brazilian Atlantic Forest, São Paulo state, southeastern Brazil. METHODS: Using mitochondrial and microsatellite loci, we surveyed population structure and genetic diversity in Scinax from five mainland populations and three land-bridge islands to understand the roles of Pleistocene forest fragmentation and sea level incursions on genetic differentiation....

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...

Diversification history of clown tree frogs in Neotropical rainforests (Anura, Hylidae, Dendropsophus leucophyllatus group)

Renata Pirani, Pedro Peloso, Joyce Prado, Érico Polo, Lacey Knowles, Santiago Ron, Miguel Rodrigues, Marcelo Sturaro & Fernanda Werneck
General consensus emphasizes that no single biological process can explain the patterns of species’ distributions and diversification in the Neotropics. Instead, the interplay of several processes across space and time must be taken into account. Here we investigated the phylogenetic relationships and biogeographic history of tree frogs in the Dendropsophus leucophyllatus species group (Amphibia: Hylidae), which is distributed across Amazonia and the Atlantic rainforests. Using Next Generation Sequencing (NGS) and double digest restriction-site associated DNA...

Data from: Copulatory function and development shape modular architecture of genitalia differently in males and females

Bruno C. Genevcius, Monique N. Simon, Tamara Moraes & Cristiano F. Schwertner
Genitalia are multitasking structures whose development is mediated by numerous regulatory pathways. This multi-factorial nature provides an avenue for multiple sources of selection. As a result, genitalia tend to evolve as modular systems comprising semi-independent subsets of structures, yet the processes that give rise to those patterns are still poorly understood. Here, we ask what are the relative roles of development and function in shaping modular patterns of genitalia within populations and across species of...

SARS-CoV-2 non-pharmaceutical interventions in Brazilian municipalities

Andreza Aruska De Souza Santos, Darlan Da Silva Cândido, William Marciel De Souza, Lewis Buss, Sabrina Li, Rafael H. M. Pereira, Chieh-Hsi Wu, Ester Sabino & Nuno R. Faria
Brazil has one of the fastest-growing COVID-19 epidemics worldwide. Non-pharmaceutical interventions (NPIs) have been adopted on a municipal level, with asynchronous actions taken across 5,568 municipalities and the Federal District. This paper addresses this complexity reporting on a novel dataset with survey responses from 4,027 mayors, 72.3% of the total municipalities in the country. This dataset responds to the urgency to track and share findings on fragmented policies to tackle health crises like the COVID-19...

EVALUATION OF THE EFFECT OF HETEROTYPIC SIGNALING ON TUMOR PHENOTYPE MODULATION IN MELANOMA

Melanoma is a type of skin cancer that can progress according to multifactorial disorders. The ability of melanoma cells to invade and metastasize to organs distant from the body suggests their adaptability to different microenvironments. The imbalance of cellular homeostasis during oncogenesis together with the high heterogeneity of stromal cells associated with the tumor have a marked effect on the repertoire of proteins secreted by malignant cells. The metastatic potential of cancer cells is determined...

Subjetividades lésbicas no cinema contemporâneo

Danusa Jeremin & Elisângela Oliveira
Cinema & Território: Revista Internacional de Arte e Antropologia das Imagens, nº 6, 2021, 76-87.

Data from: Salivary gland ultrasonography as a predictor of clinical activity in Sjögren’s syndrome

Tania Fidelix, Adriano Czapkowski, Sergio Azjen, Adagmar Andriolo, Virginia F.M. Trevisani & Virginia F. M. Trevisani
Purpose: Primary Sjögren’s syndrome is a multisystem autoimmune disease characterized by hypofunction of salivary and lacrimal glands and possible multi-organ system manifestations. Over the past 15 years, three sets of diagnostic criteria have been proposed, but none has included salivary gland ultrasonography. However, recent studies support its role in the diagnosis and prognostic evaluation of patients with Sjögren’s syndrome. This study aimed to determine the value of salivary gland ultrasonography in the diagnosis and prognosis...

Genomic data from the Brazilian sibilator frog reveals contrasting Pleistocene dynamics and regionalism in two South American dry biomes

Maria Tereza Thomé, Bryan Carstens, Miguel Rodrigues, João Alexandrino & Célio Haddad
Aim: Knowledge about the Neotropical dry formations, particularly the Caatinga, remains rudimentary compared to other biotas in the region. Here we address several biogeographical hypotheses by combining intense geographic and genomic sampling obtained for the Brazilian sibilator frog. We specifically test predictions related to the putative roles of past climate shifts (Pleistocene and Holocene) and local geographic barriers (past and current courses of the São Francisco river, SFR) in causing population differentiation in this species....

Rugged relief and climate promote isolation and divergence between two neotropical cold-associated birds

Fabio Raposo Do Amaral
The role of historical factors in establishing patterns of diversity in tropical mountains has been of interest for some time. In these regions, the historical processes of range fragmentation and contraction followed by dispersal are thought to be mediated by the interplay between rugged relief and climate fluctuations and likely explain most of the dynamics of diversification in plants and animals. Although empirical studies addressing the interaction between climate and topography have provided invaluable insights...

Data from: Effects of food intake and hydration state on behavioral thermoregulation and locomotor activity in the tropidurid lizard Tropidurus catalanensis

Dylan J. Padilla Perez, Jose Eduardo De Carvalho & Carlos Navas
Theoretical models predict that lizards adjust their body temperature through behavioral thermoregulation as a function of food availability. However, behavioral thermoregulation is also governed by interactions among physiological and ecological factors other than food availability, such as hydration state, and sometimes it can even conflict with the locomotor activity of animals. Here, we aimed to investigate the role of food intake and hydration state on behavioral thermoregulation and voluntary locomotor activity in the lizard Tropidurus...

Phylogenomics, origin and diversification of anthozoans (Phylum Cnidaria)

Catherine McFadden, Andrea Quattrini, Mercer Brugler, Peter Cowman, Luisa Dueñas, Marcelo Kitahara, David Paz-García, James Reimer & Estefania Rodríguez
Anthozoan cnidarians (corals and sea anemones) include some of the world's most important foundation species, capable of building massive reef complexes that support entire ecosystems. Although previous molecular phylogenetic analyses have revealed widespread homoplasy of the morphological characters traditionally used to define orders and families of anthozoans, analyses using mitochondrial genes or rDNA have failed to resolve many key nodes in the phylogeny. With a fully resolved, time-calibrated phylogeny for 234 species constructed from hundreds...

Oxygen supply limits the heat tolerance of avian embryos

John VandenBrooks, Jon Vimmerstedt, Dylan Padilla Pérez & Michael Angilletta
Physiologists have primarily focused on two potential explanations for heat stress in animals—the classic model of molecular stability and a more recent model of oxygen limitation. Although the classic model has widespread support, the oxygen-supply model applies to many aquatic animals and some terrestrial ones. In particular, the embryonic stage of terrestrial animals seems most susceptible to oxygen limitation because embryos acquire oxygen from the atmosphere by diffusion rather than ventilation. We report experiments confirming...

Ecological and evolutionary drivers of geographic variation in songs of a Neotropical suboscine bird: The Drab-breasted Bamboo Tyrant (Hemitriccus diops, Rhynchocyclidae)

Adriana Carolina Acero-Murcia, Fábio Raposo Do Amaral, Fábio Barros, Tiago Ribeiro, Cristina Miyaki & Marcos Maldonado-Coelho
Understanding the evolutionary and ecological mechanisms that shape the spatial divergence of signals involved in reproductive isolation is a central goal in studies of speciation. For birds with innate songs, such as the suboscine passerine birds, the integration and comparison of both genetic and ecological factors in explaining song variation at the microevolutionary scale is rare. Here we evaluated the evolutionary and ecological processes underlying the variation in the songs of the Atlantic Forest endemic...

Synthesis of Chalcogen-BODIPYs for Bio-Analytics and Theranostic Applications

Alcindo DosSantos
The project deals with the synthesis of chalcogen-BODIPYs and photophysical studies of them so that they will be used as fluorescent sensors in the detection of various analytes, especially those of biochemical interest. In collaboration, theranostic applications will be investigated. The synthetic targets will be centered on BODIPYs and aza-BODIPYs nuclei, by structural modifications seeking to insert residues containing the atoms of S, Se and Te, which will mediate central photophysical events for the intended...

Proteomics and degradomics applied to the study of the effects of mannose in mutant and non-mutant B-RAF melanoma cell lines

André Zelanis
The high energy demand imposed by the oncogenic process has important consequences on the metabolism of transformed cells, as well as having a significant impact on diagnostic methods and therapies associated with the treatment of neoplasias. Mannose is an epimer of glucose and therefore is absorbed by the same transporters as glucose. Recent work using tumor cell lines has shown that this glucose epimer accumulates in cells in the form of the intermediate mannose-6-phosphate (M6P),...

Data from: Dogs recognize dog and human emotions

Natalia Albuquerque, Kun Guo, Anna Wilkinson, Carine Savalli, Emma Otta & Daniel Mills
The perception of emotional expressions allows animals to evaluate the social intentions and motivations of each other. This usually takes place within species; however, in the case of domestic dogs, it might be advantageous to recognize the emotions of humans as well as other dogs. In this sense, the combination of visual and auditory cues to categorize others' emotions facilitates the information processing and indicates high-level cognitive representations. Using a cross-modal preferential looking paradigm, we...

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