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Publicações - ciências biológicas

The role of tayra (Eira barbara) as predator of medium and large‐sized mammals GROTTA-NETO, FRANCISCO; Michel Coutinho Hamon Mello; Raphael Coutinho Mello; Itiberê Piaia Bernardi; Eduardo Carrano; Fernando C. Passos AUSTRAL ECOLOGY, v. 46, n. 2, p. 329-333, 2021 DOI Palavra-chave: brocket deer; elusive species; gray brocket deer; Interespecific interactions Áreas do conhecimento: Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia; Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes resumo ...
The way to maturity: taxonomic study on immatures of Southern Brazilian Coccinellini (Coleoptera: Coccinellidae) species important in biological control DEL G. DA R. CELLI, NATHÁLIA; Almeida, LM.; BASÍLIO, DANIEL S.; CASTRO, CAMILA F. Zoologia, v. 38, p. 1-18, 2021 DOI Palavra-chave: Coccinellidae; Larvae; Pupae; Key Áreas do conhecimento: Ciências Biológicas; Entomologia; Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes resumo ... Among the predatory ladybird beetles (Coccinellidae: Coleoptera), members of the Coccinellini, predators of aphids and psyllids, stand out. Although the beneficial status of these beetles has been acknowledged by biological control researchers, there are no keys or detailed studies on the immature stages of South American Coccinellidae, especially Coccinellini. We provide descriptions and illustrations of the immatures and adults of major predatory Coccinellini species in southern Brazil along with an identification key for fourth instar larvae and pupae. The following species are included: Cycloneda sanguinea (Linnaeus, 1763), Eriopis connexa (Germar, 1824), Harmonia axyridis (Pallas, 1773), Hippodamia convergens Guérin-Méneville, 1842 and Olla v-nigrum (Mulsant, 1866). The morphological study, which included the use of scanning electron microscopy, revealed new characters such as the type of tarsal claws, spiracles, chalazae, parascoli and strumae. The identification key provided here may be useful in biological control programs.
Three new species of Botanophila Lioy (Diptera: Anthomyiidae) from the Mexican Transition Zone GOMES, LUCAS R. P.; Cláudio J B Carvalho ZOOTAXA (ONLINE), v. 5005, n. 3, p. 317-328, 2021 DOI Palavra-chave: biodiversity; morphology; North America; Taxonomy; highlands Áreas do conhecimento: Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes resumo ... (en) The genus Botanophila Lioy has several species distributed in North America, but none had been recorded from Mexico. Here we describe three new species of Botanophila from the highlands of the Mexican Transition Zone. We include images of habitus, drawings of the terminalia and a key to facilitate the identification of species. Remarkably, the male of the new species has dichoptic eyes, an unusual characteristic in Anthomyiidae.
Time is of the essence: A new strategy for time-stepping in stochastic models describing the enzymatic hydrolysis of colloidal suspensions of polysaccharides Isabelle Moreira; KRIEGER, NADIA; MITCHELL, DAVID ALEXANDER CHEMICAL ENGINEERING JOURNAL, v. 405, p. 126672 2021 DOI Palavra-chave: enzyme kinetics; Monte Carlo Method; Stochastic model Áreas do conhecimento: Engenharias; Engenharia Química; Processos Industriais de Engenharia Química; Processos Bioquímicos; Ciências Biológicas; Bioquímica; Enzimologia; Cinética Enzimática resumo ...
Time is of the essence: A new strategy for time-stepping in stochastic models describing the enzymatic hydrolysis of colloidal suspensions of polysaccharides Isabelle Moreira; KRIEGER, NADIA; MITCHELL, DAVID ALEXANDER CHEMICAL ENGINEERING JOURNAL, v. 405, p. 126672 2021 DOI Palavra-chave: enzyme kinetics; Método Monte Claro; Modelo estocástico Áreas do conhecimento: Ciências Biológicas; cinética enzimática resumo ...
Tissue-specific genotoxicity and antioxidant imbalance of titanium dioxide nanoparticles (NPTiO2) and inorganic lead (PbII) in a neotropical fish species OYA-SILVA, LAÍS FERNANDA; SILVA DE ASSIS, HELENA CRISTINA; Cestari, M.M.; Taynah Vicari; RODRIGO DISNER, GEONILDO; LIROLA, JULIANA RORATTO; KLINGELFUS, TATIANE; GONÇALVES, HELYANDRA DE LOURDES SCHICORA; LEITE, THALITA PIRES BORGES; CALADO, SABRINA LOISE DE MORAIS; VOIGT, CARMEN LÚCIA ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY, v. 82, p. 103551 2021 DOI Palavra-chave: Ensaio cometa em Tecidos; ensaio cometa; jundiá; Rhamdia quelen; estres oxidativo Áreas do conhecimento: Ciências Biológicas; Genética; Genotoxicidade em Peixes; Ciências Biológicas; Farmacologia; toxicidade em peixes resumo ...
Toxin accumulation, detoxification and oxidative stress in bivalve (Anomalocardia flexuosa) exposed to the dinoflagellate Prorocentrum lima Isabel do Prado Leite; Leonardo Sandrini-Neto; Francisco José Lagreze Squella; Thiago Pereira Alves; Mathias Alberto Schramm; Sabrina Loise de Morais Calado; Helena Cristina Silva de Assis; Luiz Laureno Mafra AQUATIC TOXICOLOGY, v. 232, n. 2021, p. 105738 2021 Home page Áreas do conhecimento: Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia; Ciências Biológicas; Biotecnologia; Biotecnologia Ambiental e Recursos Naturais; Biodiversidade resumo ...
Tracing the Distribution of European Lactase Persistence Genotypes Along the Americas GUIMARÃES ALVES, ANA CECÍLIA; SANTOLALLA, MEDDLY; LOESCH, DOUGLAS; DEAN, MICHAEL; MACHADO, MOARA; MOON, JEE-YOUNG; KAPLAN, ROBERT; NORTH, KARI E.; WEISS, SCOTT; BARRETO, MAURÍCIO L.; LIMA-COSTA, M. FERNANDA; SUKOW, NATALIE MARY; GUIO, HEINNER; CÁCERES, OMAR; PADILLA, CARLOS; TARAZONA-SANTOS, EDUARDO; MATA, IGNACIO F.; DIEGUEZ, ELENA; RAGGIO, VÍCTOR; LESCANO, ANDRES; TUMAS, VITOR; BORGES, VANDERCI; ADELMAN CIPOLLA, GABRIEL; FERRAZ, HENRIQUE B.; RIEDER, CARLOS R.; SCHUMACHER-SCHUH, ARTUR; SANTOS-LOBATO, BRUNO L.; CHANA-CUEVAS, PEDRO; FERNANDEZ, WILLIAM; ARBOLEDA, GONZALO; ARBOLEDA, HUMBERTO; ARBOLEDA-BUSTOS, CARLOS E.; O?CONNOR, TIMOTHY D.; MENDES, MARLA; BELTRAME, MARCIA HOLSBACH; BORDA, VICTOR; LEAL, THIAGO P.; Maria Luiza Petzl-Erler; LEHTONEN RODRIGUES SOUZA, RICARDO; RAINHA DE SOUZA, ILÍADA; SANCHEZ, CESAR Frontiers in Genetics, v. 12, p. 671079 2021 DOI Palavra-chave: lactase persistency; population genetics Áreas do conhecimento: Ciências Biológicas; Genética Humana e Médica resumo ... In adulthood, the ability to digest lactose, the main sugar present in milk of mammals, is a phenotype (lactase persistence) observed in historically herder populations, mainly Northern Europeans, Eastern Africans, and Middle Eastern nomads. As the –13910∗T allele in the MCM6 gene is the most well-characterized allele responsible for the lactase persistence phenotype, the –13910C > T (rs4988235) polymorphism is commonly evaluated in lactase persistence studies. Lactase non-persistent adults may develop symptoms of lactose intolerance when consuming dairy products. In the Americas, there is no evidence of the consumption of these products until the arrival of Europeans. However, several American countries’ dietary guidelines recommend consuming dairy for adequate human nutrition and health promotion. Considering the extensive use of dairy and the complex ancestry of Pan-American admixed populations, we studied the distribution of –13910C > T lactase persistence genotypes and its flanking haplotypes of European origin in 7,428 individuals from several Pan-American admixed populations. We found that the –13910∗T allele frequency in Pan-American admixed populations is directly correlated with allele frequency of the European sources. Moreover, we did not observe any overrepresentation of European haplotypes in the –13910C > T flanking region, suggesting no selective pressure after admixture in the Americas. Finally, considering the dominant effect of the –13910∗T allele, our r...
Transcriptional Responses of Herbaspirillum seropedicae to Environmental Phosphate Concentration GRILLO-PUERTAS, MARIANA; RAPISARDA, VIVIANA A.; Emanuel Maltempi de Souza; VILLEGAS, JOSEFINA M.; PANKIEVICZ, VÂNIA C. S.; Tadra-Sfeir, M. Z.; TELES MOTA, FRANCISCO J.; HEBERT, ELVIRA M.; BRUSAMARELLO-SANTOS, LIZIANE; PEDRAZA, RAUL O.; Fábio de Oliveira Pedrosa Frontiers in Microbiology, v. 12, p. 666277 2021 DOI Palavra-chave: Herbaspirillium seropedicae; phosphate regulon; plant-bacteria interaction Áreas do conhecimento: Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia; Ciências Biológicas; Bioquímica; Biologia Molecular resumo ... Herbaspirillum seropedicae is a nitrogen-fixing endophytic bacterium associated with important cereal crops, which promotes plant growth, increasing their productivity. The understanding of the physiological responses of this bacterium to different concentrations of prevailing nutrients as phosphate (Pi) is scarce. In some bacteria, culture media Pi concentration modulates the levels of intracellular polyphosphate (polyP), modifying their cellular fitness. Here, global changes of H. seropedicae SmR1 were evaluated in response to environmental Pi concentrations, based on differential intracellular polyP levels. Cells grown in high-Pi medium (50 mM) maintained high polyP levels in stationary phase, while those grown in sufficient Pi medium (5 mM) degraded it. Through a RNA-seq approach, comparison of transcriptional profiles of H. seropedicae cultures revealed that 670 genes were differentially expressed between both Pi growth conditions, with 57% repressed and 43% induced in the high Pi condition. Molecular and physiological analyses revealed that aspects related to Pi metabolism, biosynthesis of flagella and chemotaxis, energy production, and polyhydroxybutyrate metabolism were induced in the high-Pi condition, while those involved in adhesion and stress response were repressed. The present study demonstrated that variations in environmental Pi concentration affect H. seropedicae traits related to survival and other important physiological characteristics. Since environmen...
Transplacental transmission of Neospora caninum to lambs in successive pregnancies of naturally infected sheep in Southern Brazil Kamila Alcala Gonçalves; Thierry Grima de Cristo; Flavia Moreira da Fonseca; Rosangela Locatelli Dittrich; Renato S. de Sousa; Mary Suzan Varaschin; Ana Paula Brenner Bush; Alda Lúcia Gomes Monteiro; Marília Koch; Rafael Carneiro Costa; LASKOSKI, LUCIANE M.; Claudia Martins Galindo VETERINARY PARASITOLOGY: REGIONAL STUDIES AND REPORTS, v. 23, p. 1-5, 2021 Palavra-chave: Neosporose; ovinos; lambs Áreas do conhecimento: Ciências Biológicas; Medicina Veterinária resumo ...

Total de registros: 7170