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Anais da Academia Brasileira de Ciências

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https://read.qxmd.com/read/30916160/urotrema-macrotestis-and-urotrema-scabridum-digenea-urotrematidae-parasitizing-bats-mammalia-chiroptera-in-brazil
#1
Érica M DE Mello, Élida M L Rabelo, Reinaldo J DA Silva
Urotrema scabridum Braun 1900 and Urotrema macrotestis Mané-Garzón and Telias 1965 are reported from the small intestine of Eumops glaucinus (Wagner, 1843). The species were differentiated by the body width, the size and position of acetabulum, the size of testis, the caecal termination, and the distribution of vitellarium. The present study expands the distribution and the hosts of both species in Minas Gerais State and reports U. macrotestis parasitizing bats for the first time.
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916159/chemical-diversity-of-the-volatiles-of-lippia-rotundifolia-cham-verbenaceae-in-minas-gerais-brazil
#2
Messulan R Meira, Ernane R Martins, Francine S A DA Fonseca
Lippia rotundifolia is an aromatic species, native and endemic to rocky fields, which are isolated by small mountains. It is little known about their chemical composition. Because of that we aimed to study the chemical diversity of volatiles released from rosemary leaves (Lippia rotundifolia Cham.) coming from 11 populations of the Minas Gerais, Brazil. The material for chemical analysis was obtained from the accessions in the active germplasm bank of the Instituto de Ciências agrárias of the Universidade Federal de Minas Gerais...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916158/6-bromoindirubin-3-oxime-promotes-osteogenic-differentiation-of-canine-bmscs-through-inhibition-of-gsk3%C3%AE-activity-and-activation-of-the-wnt-%C3%AE-catenin-signaling-pathway
#3
Xiao-E Zhao, Zhenshan Yang, Zhen Gao, Junbang Ge, Qiang Wei, Baohua Ma
This study aimed to investigate how 6-bromoindirubin-3'-oxime (BIO) increases the osteogenic differentiation of canine bone mesenchymal stem cells (BMSCs) and the role of the Wnt/β-catenin signaling pathway in this process. We mimicked the effect of Wnt by adding BIO to the culture medium of BMSCs and examined whether canonical Wnt signaling positively affects the differentiation of these cells into osteoblasts. Canine BMSCs were cultured with 0.5 and 1.0 μM BIO under osteogenic conditions and then differentiation markers were investigated...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916157/high-fat-diet-and-streptozotocin-in-the-induction-of-type-2-diabetes-mellitus-a-new-proposal
#4
Diego A DE Magalhães, Willian T Kume, Francyele S Correia, Thaís S Queiroz, Edgar W Allebrandt Neto, Maísa P Dos Santos, Nair H Kawashita, Suélem A DE França
Our objective was to establish a diabetes mellitus type 2 (DM2) model in rats using a high-fat diet and streptozotocin (HF-STZ). Male Wistar rats (240-250g) were divided into a control group (commercial feed), and HF-STZ group, (66.5%-commercial feed, 13.5%-lard, and 20%-sugar). STZ (40mg/kg i.p.) or vehicle was administered on the 13th day. An oral glucose tolerance test (OGTT) was performed (2.5mg of glucose/kg v.o.) on both groups. After 39 days of treatment, blood and tissue samples were collected for analyses...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916156/first-record-of-utetheisa-pulchella-linnaeus-1758-lepidoptera-erebidae-arctiinae-in-brazilian-amazon-implications-for-conservation
#5
José A Teston, Janaína DA C Campelo, Alessandra M C Lopes, Alexandre Specht
The crimson speckled moth, Utetheisa pulchella (Linnaeus, 1758), is recorded in Brazilian Amazon for the first time. A moth (male) was collected with light trap in a multiple cropping area, in Mojuí dos Campos municipality, Pará State, Brazil. This record expands the area of occurrence and distribution of this rare species in the Neotropical Region. In addition, the occurrence of U. pulchella in the Amazon was unexpected, since this species is generally associated with open ecosystems and drier climates.
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916155/an-overview-of-inventories-of-gall-inducing-insects-in-brazil-looking-for-patterns-and-identifying-knowledge-gaps
#6
Walter S DE Araújo, Geraldo W Fernandes, Jean C Santos
We compiled published Brazilian gall-inducing insect inventories aiming to understand trends and biases in this field research and to investigate the factors that potentially explain the diversity of gall-inducing insects among different sampling sites. A total of 51 studies with gall-inducing insect inventories were compiled for Brazil, which sampled 151 sites in 88 municipalities, 13 states and five regions. The number of papers published on gall-inducing insects per year has increased over the last 30 years, being Cecidomyiidae (Diptera) the main galling taxon, Fabaceae the main host-plant family and Protium heptaphyllum (Burseraceae) the most important super-host species in these inventories...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916154/cnidom-variation-through-distinct-developmental-stages-in-the-sea-anemone-aulactinia-marplatensis-zamponi-1977-cnidaria-actiniaria
#7
Agustín Garese, Ricardo González-Muñoz, Fabián H Acuña
The cnidae are the exclusive diagnostic structures of phylum Cnidaria. The inventory of all cnidae types of a particular species is called the cnidom. The study of cnidae has been widely addressed in all classes of cnidarians. Particularly in the order Actiniaria (sea anemones), the study of the composition, size and distribution of cnidae is essential to the identification and description of species. In the present study, we examine the cnidom of the sea anemone Aulactinia marplatensis in three different stages of development throughout its life cycle...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916153/public-engagement-in-science-mapping-out-and-understanding-the-practice-of-science-communication-in-latin-america
#8
Ma DE Lourdes Patiño Barba, Jorge Padilla González Del Castillo, Luisa Massarani
This article presents the results of a study aiming to map out the characteristics of science communication activities carried out in Latin America by different organizations. We looked at a general description of the activities (such as the kind of activities carried out, in which periodicity, the publics engaged in the activities, etc.) and the favorable and unfavorable existing conditions in the organizations (such as budget and planning, evaluation, as well as weakness and strengths). The study focused on gathering primary information, through an online survey, answered by 123 institutions from 14 countries...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916152/monitoring-of-air-quality-before-the-olympic-games-rio-2016
#9
Luciana M B Ventura, Michelle B Ramos, Jéssica O Santos, Adriana Gioda
For the accomplishment of Olympic and Paralympic Games in Rio de Janeiro city (Rio 2016), the government of the Rio de Janeiro state has undertaken to monitor air quality before and during the events. In Beijing, China, and Athens, Greece, the air quality was monitored in Olympic venues in order to evaluate the athletes' performance in relation to the environment in which they were exposed. This study has the same proposal to Rio de Janeiro, Brazil. The air quality scenario of the three previous years (2013, 2014, 2015) of Rio 2016 was considered...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916151/distribution-diversity-and-habitat-partitioning-of-scolecitrichidae-species-copepoda-calanoida-down-to-1-200-m-in-the-southwestern-atlantic-ocean
#10
Cristina O Dias, Adriana V DE Araujo, Sérgio L C Bonecker
In this study, we analyzed the main distributional features of Scolecitrichidae species in the Southwestern Atlantic Ocean (northern region of Rio de Janeiro State) and determined and described their habitat partitioning, based on a night series of stratified samplings down to a depth of 1,200 m. A total of 18 species from seven genera were identified and grouped according to their depth distribution. Distinct vertical patterns of total density, richness, diversity, and evenness were observed, with a decrease in density and an increase in diversity and richness with increasing depth...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916150/litter-size-reduction-induces-metabolic-and-histological-adjustments-in-dams-throughout-lactation-with-early-effects-on-offspring
#11
João Lucas P Xavier, Dionizia X Scomparin, Catherine C Pontes, Paulo Roberto Ribeiro, Maiara M Cordeiro, Jessica A Marcondes, Felipe O Mendonça, Makcine T da Silva, Fabio B de Oliveira, Gilson C N Franco, Sabrina Grassiolli
In the present study we analyzed morphological and metabolic alterations in dams nursing small litters and their consequences to offspring throughout lactation. Offspring sizes were adjusted to Small Litter (SL, 3 pups/ dam) and Normal Litter (NL, 9 pups/ dam). Body weight, food intake, white adipose tissue (WAT) content, histological analysis of the pancreas, mammary gland (MG) and brown adipose tissue (BAT) as well as, plasma parameters and milk composition were measured in dams and pups on the 7th, 14th and 21st days of lactation...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916149/surface-modification-of-activated-carbon-by-corona-treatment
#12
Matheus F F Pego, Maria Lúcia Bianchi, Janaína A Carvalho, Tais R L A Veiga
Surface modification may lead activated carbon (AC) to take on different properties. This study aimed to promote surface modification of activated carbons using corona treatment (electrical discharge). In this study, powdered commercial activated carbon was used. Activated carbons were subjected to corona treatment at different exposure times (2, 5, 8 and 10 min) at 4.5 cm height from the source. To observe differences promoted by treatment, activated carbons were analyzed by acidity, surface functional groups, Fourier Transform Infrared Spectroscopy (FTIR), elemental analysis (CHN), proximate analysis and thermogravimetry...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916148/sambucus-australis-modulates-inflammatory-response-via-inhibition-of-nuclear-factor-kappa-b-nf-kb-in-vitro
#13
Norma V Q Carneiro, Hugo B F DA Silva, Raimon R DA Silva, Tamires C B Carneiro, Ryan S Costa, Anaque O Pires, Cintia R Marques, Eudes S Velozo, Adilva S Conceição, Tania M S DA Silva, Telma M G DA Silva, Neuza M Alcântara-Neves, Camila A Figueiredo
Medicinal plants have long been used as an alternative to traditional drugs for the treatment of inflammatory conditions due to the classical side effects and restricted access of various commercially available drugs, such as steroids (GCs) and nonsteroidal anti-inflammatory drugs (NSAIDs). Sambucus australis is a Brazilian herb that is commonly used to treat inflammatory diseases; however, few studies have examined the use of this species in the treatment of inflammatory conditions. The present study aims to evaluate the potential anti-inflammatory activity of S...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916147/reproductive-biology-of-a-viviparous-lizard-mabuya-dorsivittata-from-the-subtropical-wet-chaco-of-argentina-geographical-variations-in-response-to-local-environmental-pressures
#14
Martín A Ortiz, Jorgelina M Boretto, Nora R Ibargüengoytía
Herein we studied the reproductive biology of a viviparous lizard (Mabuya dorsivittata) from the Wet Chaco region (northeastern Argentina) and compared the results with other populations from the Espinal (central Argentina) and the Atlantic Forest (southeastern Brazil), and with other Neotropical species of Mabuya to better understand the possible causes of its reproductive phenotype variation. Males and females of M. dorsivittata from the Wet Chaco exhibited associated, seasonal, and annual reproductive cycles...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30916146/the-performance-of-the-u-th-he-thermochronology-laboratory-at-unesp-rio-claro-brazil
#15
Marli C Siqueira-Ribeiro, Danieli F C Marin, Peter C Hackspacher, Finlay M Stuart
We have developed the first laboratory for (U-Th-Sm)/He thermochronology measurements in South America. Helium is measured using a high-sensitivity magnetic sector mass spectrometer (GVI-Helix-SFT) and a double focusing single collector inductively coupled plasma mass spectrometer (Thermo Scientific ELEMENT2) is used for U, Th and Sm determinations. Repeated analyses of fragments of Durango fluorapatite crystals yields an average age of 31.6 ± 1.6 Ma (2σ) (n=62). This overlaps the long-term average of Durango fluorapatite measured in laboratories worldwide...
March 21, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30892371/morphometric-variation-in-pink-shrimp-populations-at-rio-de-janeiro-coast-se-brazil-are-they-really-similar-in-closer-areas
#16
Cássia DE Carvalho, Karina A Keunecke, Helena P Lavrado
Farfantepenaeus brasiliensis and F. paulensis are the most exploited shrimps of SE-S Brazilian coast. Our aim was to verify if adjacent nursery areas with different environmental condition (Sepetiba and Guanabara bays, SE Brazil) influence on shrimp populations (eg, CPUE) and body shapes. Samplings were carried out during 12 months in those bays ca. 85 Km far from each other. Carapace length (CL), total body length (TL), wet weight, abdomen size and TL/CL ratio were used to analyze variations in shape through regressions...
March 18, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30785500/a-new-species-and-new-records-of-leptogium-ach-gray-collemataceae-peltigerales-from-rio-grande-do-sul-state-with-an-identification-key-for-the-genus
#17
Marcos J Kitaura, Natália M Koch, Fabiane Lucheta, Márcia I Käffer, Jairo L Schmitt, Juliana Pedroso, Suzana A Martins, Andressa S Rodrigues, Luciana S Canêz
Specimens of Leptogium collected in ten localities from the State of Rio Grande do Sul were studied. Sixteen species were found of 28 records mentioned to the state, which represents around 57% of the Leptogium diversity known for Rio Grande do Sul. Leptogium exaratum is proposed as a new species. Leptogium atlanticum, L. milligranum and L. vesiculosum are reported for the first time to the state. The lectotype of L. javanicum is reported here and detailed descriptions are provided to the examined specimens...
February 14, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30785499/community-ecology-of-parasites-in-four-species-of-corydoras-callichthyidae-ornamental-fish-endemic-to-the-eastern-amazon-brazil
#18
Makson M Ferreira, Rafael J Passador, Marcos Tavares-Dias
This study compared the parasites community in Corydoras ephippifer, Corydoras melanistius, Corydoras amapaensis and Corydoras spilurus from tributaries from the Amapari River in State of Amapá (Brazil). A total of 151 fish of these four ornamental species were examined, of which 66.2% were parasitized by one or more species, and a total of 732 parasites were collected. Corydoras ephippifer (91.2%) and C. spilurus (98.8%) were the most parasitized hosts, while C. amapaensis (9.6%) was the least parasitized...
February 14, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30785498/comparative-anatomy-and-histochemistry-of-the-leaf-blade-of-two-species-of-artocarpus
#19
Rafaela D Sá, Marília B Cadena, Rafael J R Padilha, Luiz Carlos Alves, Karina P Randau
In Brazil, there are two species of Artocarpus that were introduced: Artocarpus altilis (Parkinson) Fosberg, known as fruta-pão, and Artocarpus heterophyllus Lam., known as jaca. Both are used as food and medicine. The objective of this work was to conduct a comparative anatomical and histochemical study between A. altilis and A. heterophyllus. Techniques of optical, polarized and scanning electron coupled to energy dispersive spectroscopy. The anatomical characterization showed the characters of general occurrence in the family Moraceae and of those that allow the differentiation of A...
February 14, 2019: Anais da Academia Brasileira de Ciências
https://read.qxmd.com/read/30785497/porcupine-gnaw-marks-on-a-late-pliocene-bone-from-the-upper-siwaliks-exposed-near-village-khetpurali-haryana-india
#20
Jagjeet Kaur, Rajeev Patnaik, Bahadur Singh, Kewal Krishan
Bone accumulation by porcupines at archaeological sites is well known. However, in paleontological sites such a taphonomical occurrence is rather rare. We here report porcupine (Hystrix sp.) gnaw marks on an unidentified bone fragment, dated to ~2.6 Ma from the Upper Siwalik deposits exposed near Khetpurali (Haryana), India. The present gnaw marks are very distinct and are characterized by visible edges and grooves making clear broad and shallow furrows. The present find adds to our knowledge of Siwalik vertebrate taphonomy where most of the accumulations reported earlier were either fluvial or made by carnivores...
February 14, 2019: Anais da Academia Brasileira de Ciências
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