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Search Results: 1 - 10 of 22550 matches for " Eduardo;Casagrande "
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Os Hesperiidae (Lepidoptera, Hesperioidea) da RPPN Klagesi, Santo Ant?nio do Tauá, Pará, Brasil: nova contribui??o para o conhecimento da biodiversidade da área de endemismo Belém
Mielke, Olaf H. H.;Carneiro, Eduardo;Casagrande, Mirna M.;
Acta Amazonica , 2012, DOI: 10.1590/S0044-59672012000200011
Abstract: the region of belém is one of the best known area of the amazon forest, given its scientific explorations since the 18th century. however much of the informations about the biological diversity of the region is scattered at several museums around the world, thus making it harder to access and to propose biogeographical hypothesis.. aiming to contribute to the knowledge of lepidopterological diversity of the region, the present study lists 225 species of hesperiidae present at private natural reserve klagesi registered during approximately 24 years of sporadically collecting, although more frequently on the past decade. one hundred and thirteen species not yet registered in endemism's region of belém are added, which makes it the richest of all amazonian endemism areas in brazil. however, the amazonian skippers are so poorly known that this richness index can only be used for effort comparisons instead of biogeographical or ecological inferences. three of the endemism regions still lack information about their diversity (xingú, napo and imeri), while others are known basically from one or a few inventories. therefore, focused sampling at those unknown areas or gathering information at international museums are indispensable strategies to obtain a better knowledge of amazonian butterfly diversity so they can be used for biogeographical studies and conservation management.
Ultrastructural study of ectomycorrhizas on Pinus caribaea Morelet. var. hondurensis Barr. & Golf. seedlings
Gross, Eduardo;Casagrande, Lilian I. Thomazini;Caetano, Flávio Henrique;
Acta Botanica Brasilica , 2004, DOI: 10.1590/S0102-33062004000100001
Abstract: the ultrastructure of ectomycorrhizas formed between pinus caribaea var. hondurensis inoculated with pisolithus tinctorius (pers.) coker & couch and telephora terrestris (ehrenb.) fr. was analyzed just before the transplant of these seedlings to the field to ascertain if fungi are established in the roots. ectomycorrhizal fungi formed a well-developed compact mantle in lateral roots. vacuoles, nuclei and dolipore septa were observed in mantle hyphae and numerous nuclei, endoplasmatic reticulum and polymorphic mitochondria were frequently located in the cytoplasm of hartig net hyphae adjacent to plant cortical cells. highly vacuolated cortical cells contained droplets of electron-dense material, nucleus and some organelles were observed in a narrow region of peripheral cytoplasm. the ectomycorrhizas of p. caribaea var. hondurensis exhibited typical ultrastructural characteristics of a compatible and physiological active association.
Lepidopterofauna (Papilionoidea e Hesperioidea) do Parque Estadual do Chandless e arredores, Acre, Brasil
Mielke, Olaf Hermann Hendrik;Carneiro, Eduardo;Casagrande, Mirna Martins;
Biota Neotropica , 2010, DOI: 10.1590/S1676-06032010000400033
Abstract: given the absence of lepidoptera inventories in the state of acre and its scarcity in the brazilian amazon forest, this study aimed to list the species of hesperioidea and papilionoidea present in the parque estadual do chandless and surroundings. the access to the region is complicated and it has no infrastructure for scientific research. during 14 days, the butterflies were collected with entomological nets, traps and ahrenholz's technique in different environments in the park and its surroundings. a total of 482 species were identified, none of them present in red lists of endangered species. it is expected a significantly greater number of species after the addition of new collections in other seasons, as the jacknife 1 estimate does not reach its asymptote, or as compared to inventories in nearby areas that list nearly 1700 species after a greater sampling effort.
Hesperiidae (Lepidoptera, Hesperioidea) from Ponta Grossa, Paraná, Brazil: 70 years of records with special reference to faunal composition of Vila Velha State Park
Mielke, Olaf H. H.;Carneiro, Eduardo;Casagrande, Mirna Martins;
Revista Brasileira de Entomologia , 2012, DOI: 10.1590/S0085-56262012005000009
Abstract: hesperiidae (lepidoptera, hesperioidea) from ponta grossa, paraná, brazil: 70 years of records with special reference to faunal composition of vila velha state park. the municipality of ponta grossa has a peculiar ecosystem, originally composed of mixed ombrophilous forest and natural isolated fragments of araucaria forest interconnected by large areas of the steppe phytophysionomy known as the brazilian "campos" (grasslands). however, both ecosystems have been continually reduced by human occupation, with remnants still found in the vila velha state park, whose floristic composition has been recently related to the cerrado biome. few studies have been dedicated to recognize the characteristic fauna of these grasslands and its relationship with other brazilian vegetation types, which has motivated this study. after gathering information from more than 70 years of collecting in the region, a list of 225 species of hesperiidae (lepidoptera, hesperioidea) recorded within the municipality is provided, of which 162 are indicator species of forest environments and 53 of open areas. the vila velha state park contributes to the conservation of 65% of the species and its skipper community shows a closer affinity to the pampas and cerrado instead of forested habitats. this relation may be attributed to its precise localization between both ecosystems, since geographical distances affect similarities on hesperiidae assemblages. the flora of vila velha can also influence the observed pattern, since a considerably number of species found in the region are also found in cerrado. further studies are still required among brazilian grassland habitats, especially in the cerrado enclaves within the states of paraná and s?o paulo in attempt to better understand the mechanisms that drive the community dynamics in those areas.
Registros inéditos de borboletas (Papilionoidea e Hesperioidea) amea?adas de extin??o para o Estado do Paraná, Brasil: novos subsídios para reavalia??o dos critérios de amea?a
Dolibaina, Diego Rodrigo;Carneiro, Eduardo;Dias, Fernando Maia Silva;Mielke, Olaf Hermann Hendrik;Casagrande, Mirna Martins;
Biota Neotropica , 2010, DOI: 10.1590/S1676-06032010000300007
Abstract: many countries regard the red lists of threatened species as useful tools for promoting the biological conservation. however, little effort has been made to gather base-line information on the presence and distribution of such species, or their conservation. therefore, the present work provides new records of some threatened butterflies species distributed through paraná, one of which is already included in the brazilian red list, and thus complementing the knowledge of geographical distribution and conservation. in total, 15 new records belonging to 8 species are given, confirming past records, or representing new distribution records. the species addressed in our study are: passova passova practa evans, 1951 (cr), zonia zonia diabo mielke & casagrande, 1998 (vu - brazil), alesa prema (godart, [1824]) (vu), symmachia arion (c. felder & r. felder, 1865) (vu), cyanophrys bertha (jones, 1912) (en), euryades corethrus (boisduval, 1836) (en), charonias theano (boisduval, 1836) (en), and pampasatyrus glaucope glaucope (c. felder & r. felder, 1865) (vu). except for charonias theano and pampasatyrus glaucope glaucope, all species were recorded on the past three years (2007-2009). approximately one-half of the records included here correspond to small conservation units located at the northwest and northeast regions of paraná, while records from central-south region correspond to non-protected areas, specially the endemic grasslands species. from these new data, we suggest the following modifications to threat status: remove p. p. practa, c. bertha and s. arion from the red list. z. z. diabo should be considered critically endangered (cr), while the status of e. corethrus should be revised to critically endangered (cr). we make no recommendations for change in status for a. prema, p. g. glaucope and c. theano.
Hesperioidea e Papilionoidea (Lepidoptera) coligidos em expedi??o aos Rios Nhamundá e Abacaxis, Amazonas, Brasil: novos subsídios para o conhecimento da biodiversidade da Amaz?nia Brasileira
Casagrande, Mirna M.;Mielke, Olaf H. H.;Carneiro, Eduardo;Rafael, José A.;Hutchings, Roger W.;
Revista Brasileira de Entomologia , 2012, DOI: 10.1590/S0085-56262012005000012
Abstract: hesperioidea and papilionoidea (lepidoptera) collected in an expedition to the nhamundá and abacaxis rivers, amazonas, brazil: new insights for understanding the biodiversity of the brazilian amazon. aiming at improving the knowledge of the diurnal lepidopterofauna of the amazon rainforest, this study lists 180 taxa collected at five different points along two tributaries of the amazon river, including the guyana and rondonia areas of endemism. the different localities were compared using non-metric multidimensional scaling analysis (nmds).
Doping cosmético: a problemática das aplica??es intramusculares de óleos
Figueiredo, Vandré Casagrande;Silva, Paulo Rodrigo Pedroso da;Trindade, Rafael de Souza;Rose, Eduardo Henrique De;
Revista Brasileira de Medicina do Esporte , 2011, DOI: 10.1590/S1517-86922011000100011
Abstract: doping in sports world and in the subculture of professional and recreational bodybuilding athletes is very much known and also studied by the academic and scientific community. however, a new problem, which we defined as cosmetic doping, was introduced some decades ago and has grown in importance in brazil in recent years. it is the systematic injection of oily substances by intramuscular routes, known as ade (liposoluble vitamins a, d and e), with the purpose to enlarge the muscle volumetrically, what could lead to necrosis, physical deformities or even death. this article introduces the history of the cosmetic use of body fillers and the review of the possible deleterious and lethal effects that could result as a consequence of the use, as well as the mechanisms that are involved after the injection of these substances. moreover, simple methods for potential observation of its use in athletes are presented. this paper also suggests that health professionals should report cases when these users are submitted due to their complications, since the studies and cases documented until the present time are only a small part of a reality of public health that tends to considerably increase.
Assessment of the frequency of routine removal of dental plaque prior to caries diagnosis by dentists in three cities in southern Brazil
Moreira, Carlos Heitor Cunha;Zenkner, Julio Eduardo do Amaral;Machado, Eduardo;Rocha, Rachel de Oliveira;Casagrande, Luciano;Rosing, Cassiano Kuchenbecker;
Brazilian Oral Research , 2009, DOI: 10.1590/S1806-83242009000200002
Abstract: the aim of this study was to assess the frequency of routine use of dental prophylaxis prior to visual inspection, in order to diagnose caries, by dentists with different lapses of time after graduating time. one hundred and fifty one brazilian dentists were interviewed in 3 brazilian cities to determine if they usually remove dental plaque prior to visual inspection for caries diagnosis. the dentists were stratified according to year of graduation. the association between the lapse of time after graduating and the practice of routinely removing dental plaque before clinical examination was tested using the chi-square test with a significance level of 5%. only 28.5% of the dentists reported that they usually remove dental plaque prior to clinical examination. the dentists who graduated in the last 15 years presented the lowest percentages of plaque removal prior to clinical examination (15.1%), whereas the more experienced dentists reported that they perform prophylaxis more frequently. of the professionals who graduated from 1960-1975, 23.9% reported that they performed dental plaque removal prior to diagnosis, whereas the figure for those graduating from 1976-1990 was 46.2%. most of the dentists interviewed reported that they did not remove dental plaque prior to performing visual diagnosis of caries.
Lessons learnt from the Solar neighbourhood and the Kepler field
Luca Casagrande
Physics , 2015,
Abstract: Setting the timeline of the events which shaped the Milky Way disc through its 13 billion year old history is one of the major challenges in the theory of galaxy formation. Achieving this goal is possible using late-type stars, which in virtue of their long lifetimes can be regarded as fossil remnants from various epochs of the formation of the Galaxy. There are two main paths to reliably age-date late-type stars: astrometric distances for stars in the turn-off and subgiant region, or oscillation frequencies along the red giant branch. So far, these methods have been applied to large samples of stars in the solar neighbourhood, and in the Kepler field. I review these studies, emphasize how they complement each other, and highlight some of the constraints they provide for Galactic modelling. I conclude with the prospects and synergies that astrometric (Gaia) and asteroseismic space-borne missions reserve to the field of Galactic Archaeology, and advocate that survey selection functions should be kept as simple as possible, relying on basic observables such as colours and magnitudes only.
Photometric stellar parameters for asteroseismology and Galactic studies
Luca Casagrande
Physics , 2014, DOI: 10.1007/978-3-319-10993-0_7
Abstract: Asteroseismology has the capability of delivering stellar properties which would otherwise be inaccessible, such as radii, masses and thus ages of stars. When coupling this information with classical determinations of stellar parameters, such as metallicities, effective temperatures and angular diameters, powerful new diagnostics for both stellar and Galactic studies can be obtained. I review how different photometric systems and filters carry important information on classical stellar parameters, the accuracy at which those parameters can be derived, and summarize some of the calibrations available in the literature for late-type stars. Recent efforts in combining classical and asteroseismic parameters are discussed, and the unique- ness of their intertwine is highlighted.
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