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| Registros recuperados: 76 | |
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| Bertaco,Vinicius A.; Cardoso,Alexandre R.. |
| A new pseudopimelodid catfish, Microglanis malabarbai, is described from the rio Ijuí drainage, tributary of the middle rio Uruguay, Rio Grande do Sul, Brazil. The new species is distinguished from all other Microglanis species by the caudal fin color pattern, almost completely black, with a narrow vertical white band across central portions of the caudal-fin rays. Furthermore, it is distinguished from M. cottoides and M. eurystoma, both from rio Uruguay drainage, by head length, maxillary barbel length, internareal distance, and number of lateral-line pores, and from M. cibelae from the coastal drainages of northern Rio Grande do Sul and southern Santa Catarina states, by head length, maxillary barbel length, and body width. A key is presented for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical; Taxonomy; M. eurystoma; M. cibelae; M. cottoides; Rio Ijuí; Southern Brazil. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000100002 |
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| Amato,J. F. R.. |
| A new species of polychaete, Stratiodrilus vilae, epizoic on Parastacus brasiliensis (von Martens, 1869) and P. defossus Faxon, 1898, is described from the State of Rio Grande do Sul, southern Brazil. The new species has one pair of long, anal, conical ventral lobes, one on each side of the anus, claspers in the males, and one pair of tubercles in each of the posterior locomotor appendages; and the jaw apparatus not reaching the limit between the head and the first segment. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Histriobdellidae; Stratiodrilus; Parastacidae; Parastacus; Southern Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100004 |
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| Florentín,Javier Elías; Florentin,Mariela Nuñez; Cabral,Elsa Leonor. |
| ABSTRACT Thirteen species of the genus Galianthe have been recorded for state of Rio Grande do Sul, Brazil. The species are distributed among seven biomes, one of which contains all thirteen taxa-Subtropical Seasonal Forest. Herein a new endemic species, G. riograndensis J. Florentín & E.L. Cabral, is described, illustrated and differentiated from all other species of the genus by having 3-4 verticillate leaves and a long bifid style. In addition, the pollen grain morphology and the seed micromorphology of the new species are described and illustrated, and the conservation status assessed according to IUCN criteria. Moreover, G. chodatiana is recorded for the first time from the state, and a lectotype for G. equisetoides is designated. Most of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Galianthe; Rubioideae; Southern Brazil; Spermacoceae; Taxonomy. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400619 |
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| Cassel,Ana Paula Rebelo; Barcellos,Regina Bones; Silva,Cláudia Maria Dornelles da; Almeida,Sabrina Esteves de Matos; Rossetti,Maria Lucia Rosa. |
| The aim of the present study was to investigate the association between HPV-DNA and micronucleus (MN) frequency in women with normal cervical cytology. A total of 158 normal cervical smears were analyzed cytologically. The HPV genome was amplified using the GP5+/bioGP6+ consensus primers. HPV-DNA of high-risk types 16, 18, 31, 33, 39, 45 and 59 were also investigated. Of the 158 samples, 20 (12.7%) and 47 (29.7%) were positive for HPV-DNA and MN, respectively. Evidence for MN was found in 11 out of 20 (55%) HPV-DNA positive samples and in 36 out of 138 (26.1%) HPV-DNA negative ones. MN presence was significantly higher in HPV-DNA positive samples (p = 0.016). On the other hand, the absence of MN observed in a considerable number of HPV-DNA negative samples... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human papillomavirus; Micronucleus; Cytology; High-risk HPV; Southern Brazil. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000300007 |
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| Barcelos,A.L.V.; Chies,R.; Almeida,S.E.M.; Fiegenbaum,M.; Schweigert,I.D.; Chula,F.G.L.; Rossetti,M.L.; Silva,C.M.D.. |
| We investigated the effect of the -278A>C polymorphism in the CYP7A1 gene on the response of plasma lipids to a reduced-fat diet for 6 to 8 weeks in a group of 82 dyslipidemic males with a mean age of 46.0 ± 11.7 years. Individuals who presented at least one high alteration in total cholesterol, low-density lipoprotein cholesterol or triglyceride values were considered to be dyslipidemic. Exclusion criteria were secondary dyslipidemia due to diabetes mellitus, renal, liver, or thyroid disease. None of the subjects were using lipid-lowering medication. Baseline and follow-up lipid concentrations were measured. The genotypes were determined by the digestion of PCR products with the BsaI restriction endonuclease. There were statistically significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dyslipidemia; Polymorphisms; Diet; CYP7A1; Southern Brazil. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000600003 |
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| Hesp,Patrick A.; Dillenburg,Sergio R.; Barboza,Eduardo G.; Tomazelli,Luiz J.; Ayup-Zouain,Ricardo N.; Esteves,Luciana S.; Gruber,Nelson L.S.; Toldo-Jr.,Elirio E.; Tabajara,Luiz L.C. de A.; Clerot,Luiz C.P.. |
| Many prograded barriers and some dunefields in theworld have been termed 'beach ridge' plains, but the actual genesis of the 'ridges' is often unknown. Use of the terms, berms, beach ridges and foredunes is also confusing in the literature because their definitions are highly variable and are commonly used interchangeably. Thus, the formation and definition of sand berms, beach ridges and foredunes is briefly reviewed. Beach ridges are re-defined as entirely wave formed deposits which are most commonly formed during high wave conditions and/or elevated water levels (e.g. storm surges). Foredunes are formed by aeolian sand deposition in vegetation on the backshore. Some dunefields in Brazil have been called beach ridge plains when they are, in fact,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beach ridges; Coastal barriers; Transgressive dunefields; Holocene; Southern Brazil. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000300010 |
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| CONCENÇO,G.; ANDRES,A.; SCHREIBER,F.; SILVA,A.F.; MOISINHO,I.S.; CORADINI,M.C.. |
| ABSTRACT: The aim of this study was to evaluate the occurrence of weeds in flooded rice areas, as a function of planting system and herbicide programmes in the previous cropping year. The experiment was installed in field conditions, in randomized complete blocks design, arranged in factorial scheme 3 x 2, with eight replications. In factor A, treatments consisted on conventional tillage, minimum tillage and no till cropping systems, coupled to the application (traditional control) or not (semi-ecological system) of herbicides (Factor B). One year after rice cultivation, preceding the planting of the next cropping season, phytosociological evaluations of the weed communities present in the treatments were carried out. We assessed the overall infestation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical control; Semi-ecological rice; Phytosociology; Southern Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100286 |
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| DIAS,MARILDA CARVALHO; VIEIRA,ANA ODETE SANTOS; NAKAJIMA,JIMI NAOKI; PIMENTA,JOSÉ ANTONIO; LOBO,PATRÍCIA CARNEIRO. |
| Foram realizados estudos da composição florística e fitossociologia de 1 ha de floresta ciliar do rio Iapó (bacia do rio Tibagi), município de Tibagi, PR (24º31S e 50º25W) utilizando-se 100 parcelas contíguas de 10 x 10 m, tendo-se como critério de inclusão um diâmetro à altura do peito (DAP) mínimo de 5 cm. Para cada espécie amostrada foram estimados parâmetros relativos à freqüência, densidade e dominância, além do índice do valor de importância (IVI) e índice do valor de cobertura (IVC). O levantamento resultou em 1594 indivíduos pertencentes a 127 espécies, 81 gêneros e 43 famílias. As espécies mais importantes em IVI e IVC foram Eugenia blastantha, Faramea porophylla, Casearia obliqua, Nectandra grandiflora, Sebastiania commersoniana, Casearia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytosociology; Riparian forest; Tibagi river basin; Southern Brazil. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000200011 |
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| Siegloch,Ana Emilia; Froehlich,Claudio Gilberto; Kotzian,Carla B.. |
| The taxonomic composition and diversity of assemblages of Ephemeroptera nymphs of four lotic environments in the central region of State of Rio Grande do Sul, a subtropical area in southern Brazil, were evaluated. Samplings were done monthly, with a Surber sampler, from June 2001 to May 2002, in the Jacuí River and three of its tributaries. The total number of nymphs collected in the four sampling sites was 11,007 in five families and 19 genera, of these, 11 are new records for the State. The highest diversity occurred in Point 4 (H'=2.41) and the lowest in Point 2 (H'=1.69). Point 4 had the highest environmental stability, conservation of the riparian vegetation and the lowest anthropic impact, while Point 2 presented a large environmental simplification... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ephemeroptera; Nymphs; Taxonomic composition; Diversity; Southern Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400002 |
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| Nardelli,Margaret Seghetto; Bueno,Norma Catarina; Ludwig,Thelma Alvim Veiga; Tremarin,Priscila Izabel; Bartozek,Elaine Cristina Rodrigues. |
| A taxonomic survey was carried out on Coscinodiscophyceae and Fragilariophyceae found in the Iguaçu River catchment area within Iguaçu National Park, in the state of Paraná, Brazil. Between September 2007 and August 2008, we collected 24 samples from two stations on the Iguaçu River, upstream and downstream of the falls. We identified 37 taxa, including 22 specific and infraspecific taxa of Coscinodiscophyceae, together with 15 specific and infraspecific taxa of Fragilariophyceae. Melosira ruttneri Hustedt and Fragilaria alpestris Krasske ex Hustedt represent new records for Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diatoms; Lotic systems; Southern Brazil; Taxonomy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000100013 |
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| Werner,Vera Regina; Sant'anna,Célia Leite; Azevedo,Maria Teresa de Paiva. |
| The paper proposed Cyanoaggregatum brasiliense, a new genus and species from the plankton of a subtropical brackish coastal lagoon from Rio Grande do Sul State, South Brazil. It differs from all other members of Chroococcales by its characteristic arrangement of cells in irregular groups distributed in a single, flat or slightly curved layer, on irregular rows, slightly distant from each other, forming a mosaic-like pattern slightly below the surface of the mucilaginous colonial envelope. The cell division in one plane perpendicular to the long axis and the lack of pseudo-filaments indicate its classification in the family Synechococcaceae, sub-family Aphanothecoideae. The general characteristics, the diagnostic criteria and the taxonomic position are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal lagoon; Cyanoaggregatum brasiliense; Cyanobacteria; New genus and species; Southern Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300012 |
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| Nunes,Daniela M.; Pellanda,Mateus; Hartz,Sandra Maria. |
| Oligosarcus jenynsii (Günther, 1864) and O. robustus Menezes, 1969 are fish species distributed in Rio Grande do Sul, Brazil, Uruguay, and northern Argentina. The reproductive period and recruitment, sex ratio, absolute and relative fecundity, and body length at first gonadal maturation of the two carnivorous species from Fortaleza Lagoon were analized. The specimens were sampled monthly, from May 2000 to April 2001, with fishing effort of 24 hours/month, using stationary gillnets of different mesh sizes and seine net (three samples per edge). The records of each individual included total length, total weight, gonad weight, sex and gonadal maturity stage. The reproductive period of both O. jenynsii and O. robustus ranges from May/June to November/December,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oligosarcus; Reproduction; Characidae; Southern Brazil. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100001 |
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| DA SILVA,PEDRO G.; VAZ-DE-MELLO,FERNANDO Z.; DI MARE,ROCCO A.. |
| Scarabaeinae specimens were collected with the use of pitfall traps baited with human excrement, rotten meat and rotting banana, between May 2009 and April 2010, in three forest fragments in Santa Maria, Rio Grande do Sul, Brazil: ‘Morro do Elefante’ (MOEL), ‘Morro do Cerrito’ (MOCE) and ‘Campus da Universidade Federal de Santa Maria’ (UFSM). A total of 19,699 individuals belonging to 33 species were collected. Canthidium aff. trinodosum Boheman, 1858, Canthon latipes Blanchard, 1845, Dichotomius assifer (Eschscholtz 1822), Eurysternus caribaeus (Herbst 1789), Canthidium sp. and Canthon lividus Blanchard, 1845, were the most abundant species. MOEL showed the greatest richness, MOCE the greatest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic forest; Dung beetles; Southern Brazil; Species richness; Temporal distribution. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200679 |
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| Silveira,Eliane F. da; Amato,José F. R.; Amato,Suzana B.. |
| This is the first report of a species of Echinuria Soloviev, 1912, on anatid hosts in South America, causing granulomas. It is also the first detailed description and record of a species of Echinuria, for South America in the Rosy-billed Pochard, Netta peposaca (Vieillot, 1816). Fifty-two rosy-billed pochards were examined for helminths in the Municipalities of Santa Vitória do Palmar (locality of Fazenda Sossego) and (locality of Ponta da Antena), State of Rio Grande do Sul, Brazil, and Alvear, Province of Corrientes, northern Argentina. Samples were obtained from 2003 to 2004. After the catch each bird was immediately frozen with dry ice. Prior to necropsy birds were sexed, weighted, measured, and the state of maturity (juvenile or adult) determined,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding grounds; Granuloma; Migratory flyway; Northern Argentina; Rosy-billed pochard; Southern Brazil; Wintering grounds. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200027 |
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| Registros recuperados: 76 | |
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