Publicações - ciências biológicas
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RIOS, LEONARDO P.;
Carolina Arruda de Oliveira Freire
Palavra-chave:
crab;
osmoregulation;
metabolismo;
Oxygen consumption;
Ammonia;
lactate
Áreas do conhecimento:
Ciências Biológicas; Fisiologia; Fisiologia Comparada; Fisiologia Comparativa da Osmorregulação
resumo ...
Non-native organisms challenge ecosystems, especially under the additional influence of climate change. Comparisons of physiological performance between ecologically-similar native and non-native species contribute to the field of invasion biology. We examined two decapod crustaceans that occur sympatrically in the Estuarine Complex of Paranaguá (ECP), Brazil: Charybdis helleri (non-native) and Menippe nodifrons (native). Crabs were acclimated to control (26 °C) and elevated (30 °C) temperatures for one week in full-strength seawater (35‰), and were then submitted to dilute seawater (30, 25, and 20‰) for 6 h, simulating short-term tidal challenges. Hemolymph was assayed for osmolality, chloride, magnesium, and lactate; muscle samples were evaluated for hydration levels. Dissolved oxygen and ammonia production were assessed in the experimental water. Both species were impacted by low salinity, with a synergistic effect from elevated temperatures. However, C. hellerii was more affected by the combined treatments, displaying less capacity to keep stable muscle hydration levels upon seawater dilution, a steeper decrease in dissolved oxygen, higher ammonia excretion, and higher lactate. The non-native C. hellerii was physiologically challenged to a much higher degree than the native species. Although C. hellerii has established populations in the ECP, its sensitivity to salinity reductions and rising temperatures may limit its further spread in areas with intense fluctuating abiotic conditions. These data can support modelling efforts of the trends in species distribution where C. helleri is invasive. This unexpected result may also be indicative of the ongoing process of invasion; similar approaches could contribute to invasion science involving other marine/estuarine invertebrates.
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Natana Raquel Zuanazzi;
Tainá dos Santos;
Sandrieli Gonçalves;
de Castilhos Ghisi, Nédia;
Ricardo Yuii Sado;
Claudemir de Souza;
C A Oliveira Ribeiro;
Elton Celton de Oliveira
Palavra-chave:
2,4-D herbicida;
Rhamdia quelen;
Exposição trófica;
biomarcadores;
toxicologia reprodutiva
Áreas do conhecimento:
Ciências Biológicas; Ecologia; Ecologia Aplicada; Ecotoxicologia
resumo ...
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BAAL, SUELEN CRISTINA SOARES;
BIALLI, AMANDA PLAÇA;
ANGELI, RAFAELLA FERNANDA;
Fernandes, Luiz Cláudio;
Katya NALIWAIKO;
CORDEIRO, LUCIMARA MACH CÔRTES;
APPEL, MARCIA HELENA;
Fabiola Iagher
Palavra-chave:
cancer;
polysaccharides
Áreas do conhecimento:
Ciências Biológicas; Fisiologia; Fisiologia de Órgãos e Sistemas; Fisiologia Endócrina
resumo ...
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BAAL, SUELEN CRISTINA SOARES;
BIALLI, AMANDA PLAÇA;
ANGELI, RAFAELLA FERNANDA;
Fernandes, Luiz Cláudio;
Katya NALIWAIKO;
CORDEIRO, LUCIMARA MACH CÔRTES;
APPEL, MARCIA HELENA;
Iagher, Fabíola
Palavra-chave:
cancer;
polysaccharides
Áreas do conhecimento:
Ciências Biológicas; Fisiologia; Fisiologia de Órgãos e Sistemas; Fisiologia Endócrina
resumo ...
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BASÍLIO, DANIEL S;
Julissa Melissa Churata Salcedo;
Guillermo Gonzaléz;
Almeida, LM.
Palavra-chave:
Coccinellini;
Coccinelloidea;
descriptions;
Mycophagy;
Taxonomy
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes;
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes; Morfologia
resumo ...
(en)
Psyllobora Chevrolat is a New World genus of mycophagous coccinellids with over 80 species. Only four species have been recorded in French Guiana (P. bowringii Crotch; P. confluens Fabricius; P. marshalli Crotch; and P. intricata Mulsant). This study increases this number to eleven species: the four previously known; five new records for the country (P. balinti Almeida; P. consistoides Mader; P. divisa (Fabricius); P. lutescens Crotch; and P. sosia Almeida & Marinoni) and two new species (P. almeidae Basílio & Churata, sp. nov. and P. seag Basílio & Churata, sp. nov.).
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Danilo A. Zavatin;
Joelcio Freitas;
LIRIO, ELTON J.;
Vagner Schaefer Faller;
Jefferson Prado;
Cíntia Kameyama;
Ulisses G. Fernandes
Palavra-chave:
conservation;
Flora of Brazil;
Lamiales;
New taxon;
Ruelliae
Áreas do conhecimento:
Ciências Biológicas; Botânica; Taxonomia Vegetal; Taxonomia de Fanerógamos
resumo ...
Ruellia is the second most species-rich genus in the family Acanthaceae, comprising approximately 375 species that are primarily distributed in tropical and subtropical regions. In Brazil, 104 species of the genus are recorded, occurring across all biomes. The Atlantic Forest, recognized as a biodiversity hotspot, harbors 24 species of Ruellia, despite ongoing threats such as deforestation. In this paper, we describe and illustrate the new species Ruellia capixaba, endemic to the Atlantic Forest in Espírito Santo State, Brazil. We also propose a new name, Ruellia fatimae, for a red-flowered, scandent species transferred from the genus Stephanophysum, lectotypify Ruellia furcata, another species endemic to this biome, and provide an identification key to the scandent species of Ruellia occurring in the Brazilian Atlantic Forest.
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FIORI, MARIANA;
DE AZEVEDO, EVELLYN M.;
RODRIGUES, LAIS S.;
TURT, KAMILY S.;
BRUSCHI, DANIEL PACHECO;
Marcelo M. S. Lima
Palavra-chave:
Circadian rhythm;
melatonin;
Multiple myeloma;
PSQI;
Sleep quality
Áreas do conhecimento:
Ciências Biológicas; Fisiologia; Neurofisiologia
resumo ...
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NEWTON, LACIE G;
KALKMAN, VINCENT J;
KOLHI, MANPREET;
FOMEKONG-LONTCHI, JUDICAËL;
LUPIYANIGDYAH, PUNGKI;
ONSONGO, VIOLET;
ROWE, EMMA;
SANCHEZ-HERRERA, MELISSA;
PINKERT, STEFAN;
SUTHERLAND, LAURA;
TOLMAN, ETHAN;
ABBOTT, JOHN C;
BYBEE, SETH M;
Ângelo Parise Pinto;
CARTER, PAYTON;
FRANDSEN, PAUL B;
GOODMAN, AARON;
GURALNICK, ROBERT;
HAHN, BRITTNEY;
IDEC, JACOB;
et.al
Palavra-chave:
Biogeography;
diversification;
fligth behavior;
molecular dating;
phylogenomics;
Wing Morphology
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes;
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes
resumo ...
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GROSSI, LUIS EDUARDO;
SILVA, LETÍCIA BERNADETE DA;
NOVAIS, VINICIUS MARTINS;
GOLIAS, HALISON CORREIA;
ALVES, ANA CAROLINA FELICIO;
Mário Antonio NavarroSilva;
João Antonio Cyrino Zequi
Palavra-chave:
Diptera;
Culicidae;
Ecologia de Vetores
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes;
Ciências Biológicas; Zoologia; Zoologia Aplicada; Conservação das Espécies Animais
resumo ...
ABSTRACT Culicidae are implicated in arboviruses and represent a public health concern. The...
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Ana Paolla Protachevicz;
Angelica Beate Winter Boldt;
Marcos Pileggi
Palavra-chave:
longevidade saudável;
microbiota intestinal;
Ácido Fólico;
Vitamina B12;
epigenética;
SCFA
Áreas do conhecimento:
Ciências Biológicas; Genética; Epigenética;
Ciências Biológicas; Microbiologia; Biologia e Fisiologia dos Microorganismos; Virologia
resumo ...
Aging is a dysbiotic and pro-inflammatory process that increases susceptibility to multiple chronic comorbidities. Centenarians and supercentenarians offer a unique biological model for elucidating the molecular determinants of healthy aging and exceptional longevity, as they display distinctive epigenetic signatures and a gut microbiome configuration that diverges from both younger and typically aging individuals, although substantial interindividual variability exists. The gut microbiota constitutes a strategic hub of microorganisms and bioactive metabolites with probiotic and postbiotic potential that modulate host epigenetic circuits through precursors and substrates for epigenetic “writer” and “eraser” enzymes, thereby shaping the aging trajectory. In this review, we examine the interactions between the microbiota and its metabolites, including short-chain fatty acids, lipopolysaccharides, trimethylamine N-oxide (TMAO), p-cresol, and secondary bile acids, and their roles in epigenetic modulation associated with healthy aging. We highlight (i) the attenuation of classical pro-inflammatory pathways through downregulation of NF-κB/COX-2, modulation of the Th17/Treg balance, and also the lower systemic LPS levels of centenarians, which are associated with enhanced SIRT1 activity (↑LPS/↓SIRT1); (ii) the reprogramming of energy metabolism via activation of SIRT1/AMPK and SIRT1/p-53, modulation of mTOR, and attenuation of the IGF-1/insulin axis; (iii) the strengthening of the intestinal barrier through upregulation of tight junction proteins such as ZO-1, occludin, and claudins, resulting in reduced permeability and zonulin levels; and (iv) the optimization of antioxidant defenses. Collectively, these findings suggest translational potential for microbiota-derived metabolites in gerobiotic strategies, although clinical evidence remains limited.
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