Consulta: subjectFacets:"Southern Brazil"
Registros recuperados: 76
Data/hora: 01/06/2024 00:47:24

Two new taxa in Cyrtopodium (orchidaceae) from southern Brazil
Provedor de dados: 66
Autores: Batista,João A. N.; Bianchetti,Luciano B.
kleinii is similar to a group of terrestrial species characterized by their small pseudobulbs, buried underground, and small flowers, but it can be distinguished by the color of its flowers, lip lateral lobes slightly or not falcate and subequal in length and width, lip midlobe base with little or no constriction, and geographical distribution. Cyrtopodium brandonianum subsp. lageanum is similar in general flower color to typical C. brandonianum, but it can be distinguished by its earlier flowering, leaves poorly developed at anthesis and different shape and colour of the lip. Both taxa are rare and only known from southern Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyrtopodium; Orchidaceae; Southern Brazil; Taxonomy.
Ano: 2005
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932005000100009

Association between human papillomavirus (HPV) DNA and micronuclei in normal cervical cytology
Provedor de dados: 74
Autores: 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

First record of Chaunus achavali (Anura, Bufonidae) from Rio Grande do Sul, Brazil, with a key for the identification of the species in the Chaunus marinus group
Provedor de dados: 76
Autores: Kwet,Axel; Di-Bernardo,Marcos; Maneyro,Raúl.
The bufonid toad Chaunus achavali, a recently described species known only from Uruguay, is recorded for Brazil. This species is morphologically similar to C. ictericus and C. arenarum, and several individuals were labeled in Brazilian scientific collections under these taxa. A lectotype of C. arenarum is designated. Additional field notes on C. achavali and a key for the identification of the species in the Chaunus marinus group are presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chaunus marinus species group; Chaunus achavali; New record; Southern Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400013

Species richness and community structure of arboreal spider assemblages in fragments of three vegetational types at Banhado Grande wet plain, Gravataí River, Rio Grande do Sul, Brazil
Provedor de dados: 76
Autores: Bonaldo,Alexandre B.; Marques,Maria Aparecida L.; Pinto-da-Rocha,Ricardo; Gardner,Toby.
The taxonomic composition, observed and estimated species richness, and patterns of community structure of arboreal spider assemblages in eleven sites surrounding the "Banhado Grande" wet plain in the state of Rio Grande do Sul, Brazil, are presented. These sites represent three different vegetational types: hillside (four sites), riparian (five sites) and flooded forests (two sites). The spiders were captured by beating on foliage and "aerial litter". A sample was defined as the result of beating on twenty bushes, tree branches or "aerial litter" clusters, which roughly corresponds to one-hour search effort per sample. Fifty five samples (five per site) were obtained, resulting in an observed richness of 212 species present as adult or identifiable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arboreal spiders; Taxonomic composition; Species richness; Wet plain; Southern Brazil.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000200003

Feeding ecology in the small neotropical amphisbaenid Amphisbaena munoai (Amphisbaenidae) in southern Brazil
Provedor de dados: 76
Autores: Bernardo-Silva,Jorge S.; Von-Mühlen,Eduardo M.; Di-Bernardo,Marcos; Ketterl,Jochen.
We analyzed the alimentary tract of 66 specimens of Amphisbaena munoai Klappenbach, 1969 from the Serra do Sudeste, state of Rio Grande do Sul, southern Brazil. Forty specimens (60.6%) had prey items in their gut. The diet consisted mainly of small invertebrate prey, such as termites, insect larvae and ants. The most abundant prey item was termites, found in 62.5% of the non empty stomachs. The high number of individual prey items in the majority of stomachs, the small size of the regular prey items, and the absence of gut content in specimens of A. munoai kept alive for about two days, indicate that this species forages very frequently. The predominance of fossorial prey items and the occasional records of nomadic ants lead us to suggest that A. munoai...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphisbaena munoai; Diet; Feeding behavior; Natural history; Southern Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400014

Two new Neotropical species of Drosophila peruensis species group (Diptera, Drosophilidae)
Provedor de dados: 76
Autores: Döge,Jonas S.; Gottschalk,Marco S.; Valente,Vera Lúcia S.
The Drosophila peruensis species group was recently proposed and includes four taxa: D. atalaia Vilela &amp;amp; Sene, 1982, D. boraceia Vilela &amp;amp; Val, 2004, D. pauliceia Ratcov &amp;amp; Vilela, 2007, and D. peruensis Wheeler, 1959. All these species have most of setae or setulae of mesonotum arinsing from dark spots, wings with crossveins darker (except in D. atalaia) and hypandrium squared-shaped mostly fused to gonopods. Here, we describe two new species, Drosophila itacorubi sp. nov. and Drosophila paraitacorubi sp. nov., belonging to this species group. The male genitalia of these species are figured. An identification key to the D. peruensis species group is provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Rainforest; Male genitalia; Mangrove; Southern Brazil; Spotted thorax.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300005

Composition and diversity of Ephemeroptera (Insecta) nymph communities in the middle section of the Jacuí River and some tributaries, southern Brazil
Provedor de dados: 76
Autores: 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

A new species of Stratiodrilus (Polychaeta, Histriobdellidae) from freshwater crayfishes of southern Brazil
Provedor de dados: 76
Autores: 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

Dinâmica reprodutiva de Oligosarcus jenynsii e O. robustus (Characiformes, Characidae) na lagoa Fortaleza, Rio Grande do Sul, Brasil
Provedor de dados: 76
Autores: 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

Taxonomy of Epyris (Hymenoptera, Bethylidae) from Paraná, Brazil
Provedor de dados: 76
Autores: Santos,Lucyane Moreira dos; Azevedo,Celso Oliveira.
Epyris rotundus sp. nov. and Epyris cochlear sp. nov., from southern Brazil, are described and illustrated. Epyris longus Corrêa &amp;amp; Azevedo, 2002, E. argentinicus Evans, 1969, E. angustatus Evans, 1969, E. perpolitus Evans, 1969, E. parallelus Evans, 1969, E. distinctus Corrêa &amp;amp; Azevedo, 2002, E. variatus Corrêa &amp;amp; Azevedo, 2002, E. jugatus Evans, 1969, E. intermedius Evans, 1969 and E. depressigaster Evans, 1966 are recorded for the first time to Paraná, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epyrinae; Epyris; Hymenoptera; Southern Brazil; Taxonomy.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212003000200010

Silvopastoral systems in the cold zone of Brazil.
Provedor de dados: 14
Autores: VARELLA, A. C.; BARRO, R. S.; SILVA, J. L. S. da; PORFIRIO-DA-SILVA, V.; SAIBRO, J. C. de.
The cold zone of Brazil occupies approximately 6 % of the national territory and is located between latitudes 24° S and 33° S. In this area, extensive cattle and sheep farming systems and conventional cropping and forestry are predominant. With the end of government subsidies by the decade of 1980s, an increase in farming production costs, a decrease of native forest covering, an increase of degraded areas in agriculture and livestock farming systems and a mismatch between timber national supply and demand after 1990s, an opportunity arises for integrate forestry with livestock and agriculture activities in Brazil, particularly in the southern. This chapter initially reports key events over the last three decades that have supported the increasing interest...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Sistema silvipastoril; Sistema agroflorestal; Região Sul; Brasil; Tree; Southern Brazil; Planta Forrageira; Sombreamento; Agroforestry; Cattle; Sheep.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1090865

Lista dos mamíferos do Estado de Santa Catarina, Sul Do Brasil
Provedor de dados: 81
Autores: Cherem,Jorge J.; Simões-Lopes,Paulo C.; Althoff,Sérgio; Graipel,Maurício E.
The mammal fauna from Santa Catarina State, southern Brazil, is one of the least known of the country. Works on terrestrial mammals are scarce and new species of aquatic mammals have been registered in the last years. For that reason, a commented list of the mammals of Santa Catarina based on data gathered from scientific collections and bibliographical references are presented. One hundred and fifty-two species of confirmed occurrence, 59 species of possible occurrence and six species/subspecies with erroneous record for the state were registered.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: List; Mammals; Santa Catarina State; Southern Brazil.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832004000200002

Biologia reprodutiva de Delomys dorsalis (Hensel, 1872) - Rodentia, Sigmodontinae - em área de floresta ombrófila mista, Rio Grande do Sul, Brasil
Provedor de dados: 81
Autores: Cademartori,Cristina V.; Fabián,Marta E.; Manegheti,João O.
Delomys dorsalis is restricted to the wet tropical and subtropical forests of southern and southeastern Brazil and northeastern Argentina . The reproductive cycle of this species was studied by the histological examination of the reproductive tracts of animals caught in an area of mixed forest with conifers (29º 23' S, 50º 23' W), in southern Brazil , and from observations on a laboratory group of individuals. Fourteen expeditions were carried out from February 1997 to April 1998, during approximately 3 nights, using 140 live traps set on the ground and on branches between 1.5 and 2.0 m high. Reproductively active individuals were observed year round, although winter was marked by a reduction in breeding activity resulting from recruitment. Females showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Delomys dorsalis; Mixed forest with conifers; Reproduction; Sigmodontinae; Southern Brazil.
Ano: 2005
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832005000200002

Occurrence of Lepidopterism caused by the moth Hylesia nigricans (Berg) (Lepidoptera: Saturniidae) in Rio Grande do Sul State, Brazil
Provedor de dados: 82
Autores: Iserhard,Cristiano A.; Kaminski,Lucas A.; Marchiori,Maria O.; Teixeira,Eduardo C.; Romanowski,Helena P.
Lepidopterism by Hylesia nigricans (Berg) moth is recorded for the first time in southern Brazil. Preventive strategies of control are proposed based on information on the biology and ecology of this moth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatitis; Host-plant; Southern Brazil; Urticating moth.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000400022

A new species of Microglanis (Siluriformes: Pseudopimelodidae) from the rio Uruguay drainage, Brazil
Provedor de dados: 83
Autores: 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

Feeding habit of Eigenmannia trilineata Lopez &amp;amp; Castello, 1966 (Teleostei: Sternopygidae) of Parque Estadual de Itapuã, RS, Brazil
Provedor de dados: 83
Autores: Giora,Júlia; Fialho,Clarice B.; Dufech,Ana Paula S.
This study aims to describe the feeding habits of a population of the weakly electric fish Eigenmannia trilineata from Southern Brazil through the monthly frequency variation of replection (RI) and hepatosomatic (HSI) indexes, condition factor (CF) and dietary analysis of the species, besides the comparison of the results with abiotic factors. We collected 428 specimens from June/2002 to May/2003 with a dip net and electric fish detector. Stomach contents were analyzed using three measurements: frequency of occurrence of food items, percentage composition per prey type and feeding importance index. Microcrustacea and autochthonous insects were the dominant food items in the stomachs of E. trilineata. The adults (males larger than 63.5 mm and females larger...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gymnotiformes; Electric-fish; Diet; Southern Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000200007

New species and synonymies in Hexoplonini Martins, 2006 (Coleoptera, Cerambycidae), with notes and new records on Cerambycinae Latreille, 1802
Provedor de dados: 84
Autores: Nascimento,Francisco Eriberto de Lima; Santos-Silva,Antonio.
Abstract Glyptoscapus letiziae, a new species of Hexoplonini Martins, 2006, is described from Brazil (Minas Gerais). Glyptoscapus cicatricosus Aurivillius, 1899 and G. vanettii Martins, 1959 are synonymized with G. pallidulus (White, 1855). A key to species of Glyptoscapus is provided. New state records are presented for Thoracibidion io (Thomson, 1867) (Neoibidionini), Coleoxestia rafaeli Santos-Silva &amp; Wappes, 2017 and C. denticornis (Gahan, 1892) (Cerambycini). The female of C. rafaeli is described for the first time.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Key; Southern Brazil; South America; Taxonomy.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100234

Characterization of the Weed Flora in Rice Areas under Distinct Cropping Systems and Herbicide Managements
Provedor de dados: 87
Autores: 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

Cyanoaggregatum brasiliense gen. et sp. nov., a new chroococcal Cyanobacteria from Southern Brazil
Provedor de dados: 88
Autores: 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

Some species of Perenniporia Murrill (Poriales, Basidiomycotina) from Southern Brazil
Provedor de dados: 88
Autores: GERBER,ALEXANDRA LEHMKUHL; NEVES,MARIA ALICE; LOGUERCIO-LEITE,CLARICE.
Perenniporia contraria, P. martius, P. medulla-panis, P. ohiensis, P. piperis, P. stipitata and P. tephropora are described in this paper. A key to these species is presented. Five species studied in culture are included, through the respective species code. P. tephropora is a new record from Southern Brazil. A check-list of names Perenniporia species known throughout the world is given.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Perenniporia; Taxonomy; Southern Brazil.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000200009

Composição florística e fitossociologia do componente arbóreo das florestas ciliares do rio Iapó, na bacia do rio Tibagi, Tibagi, PR
Provedor de dados: 88
Autores: 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 (24º31’S e 50º25’W) 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

Composição, estrutura e relações florísticas do componente arbóreo de uma floresta estacional no Rio Grande do Sul, Brasil
Provedor de dados: 88
Autores: JARENKOW,JOÃO ANDRÉ; WAECHTER,JORGE LUIZ.
A composição específica de florestas estacionais no Rio Grande do Sul é fortemente influenciada por dois contingentes florísticos diferentes, um coincidente com as florestas atlânticas do leste e outro com as florestas paranaense-uruguaias do oeste. Um levantamento fitossociológico de uma floresta central sul-rio-grandense foi realizado para detectar a estrutura comunitária do componente arbóreo e a participação local dos diferentes contingentes florísticos. Todas as árvores com DAP  &gt; ou =  5 cm foram registradas em uma área de 1 ha, subdividida em 100 unidades amostrais de 10 x 10 m. As espécies amostradas foram classificadas como amplas ou restritas, segundo suas distribuições geográficas, considerando as afinidades florísticas leste ou oeste. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristics; Seasonal forest; Phytosociology; Phytogeography; Southern Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300004

The genera Eriochrysis P. Beauv., Imperata Cirillo and Saccharum L. (Poaceae - Andropogoneae - Saccharinae) in the state of Rio Grande do Sul, Brazil
Provedor de dados: 88
Autores: Welker,Cassiano Aimberê Dorneles; Longhi-Wagner,Hilda Maria.
The subtribe Saccharinae belongs to the tribe Andropogoneae and comprises ca. 140 species in 13 genera, including Eriochrysis, Imperata and Saccharum. This work presents a survey of the species of these three genera in the state of Rio Grande do Sul. Intensive field collections were made in different physiographic regions of the state, as well as studies in several herbaria. The occurrence of three native species of each genus was confirmed in Rio Grande do Sul, in addition to sugar cane (Saccharum officinarum) that is cultivated in the region. Based on the material examined, Eriochrysis villosa is reported for the first time in the state of Paraná, Brazil. Identification keys for the species, descriptions, data on their geographical distributions,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floristics; Gramineae; Southern Brazil; Taxonomy.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000100010

Neolasioptera ramicola, a new species of Cecidomyiidae (Diptera) associated with Physalis angulata (Solanaceae)
Provedor de dados: 92
Autores: Maia,Valéria Cid; Zart,Marcelo; Botton,Marcos.
Neolasioptera ramicola Maia, a new species of Cecidomyiidae (Diptera) that induces stem galls on Physalis angulata (Solanaceae) is described and illustrated (larva, pupa, male, female and gall) based on material from Bento Gonçalves, Rio Grande do Sul, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physalis; Solanaceae; Southern Brazil.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000200001

Scapteromys aquaticus (Rodentia: Sigmodontinae) in Brazil with comments on karyotype and phylogenetics relationships
Provedor de dados: 103
Autores: Bonvicino,Cibele R.; Fernandes,Fabiano A.; Viana,Maria C.; Bernardo,R. Teixeira; D'Andrea,Paulo S.
The swamp rats are distributed in Argentina, southern Paraguay, Uruguay and southern Brazil, with two species currently accepted: Scapteromys aquaticus Thomas, 1920 and Scapteromys tumidus Waterhouse, 1837. While S. aquaticus occurs in Argentina, Paraguay and western Uruguay, S. tumidus occurs in Brazil and Uruguay. Here we report for the first time the occurrence of S. aquaticus in gallery forest remnants in Southern Brazil. Karyologic analysis showed 2n = 32 and FNa = 40. Phylogenetic analyses, based on DNA sequences from the mitochondrial cytochrome-b gene indicate that the Brazilian and the Argentinian specimens of S. aquaticus shared one haplotype, while median joining analysis showed lack of population structure. This register, plus the karyotype...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: New record; Southern Brazil; Species limits; Swamp rat.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200016

Numerical anomalies in the dentition of southern fur seals and sea lions (Pinnipedia: Otariidae)
Provedor de dados: 103
Autores: Loch,Carolina; Simões-Lopes,Paulo C.; Drehmer,César J.
Cases of dental agenesis, supernumerary teeth and dental losses are presented in three species of South American Otariids: Arctocephalus australis (Zimmermann, 1783), A. tropicalis (Gray, 1872) and Otaria flavescens (Shaw, 1800). For the first time, congenital and acquired dental anomalies were comparatively diagnosed in skull samples from southern Brazil and nearby areas. The skulls and mandibles were accessed in the scientific collection of mammals of the Federal University of Santa Catarina, southern Brazil. Agenesis was found only among maxillary post-canine teeth, especially the distal ones (PC/6), due to an evolutionary trend towards reduction of the number of post-canine teeth in this family. Maxillary and mandibular supernumerary teeth were found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arctocephalus australis; A. tropicalis; Dental agenesis; Otaria flavescens; Southern Brazil; Supernumerary teeth.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300023

Zooarqueologia dos mamíferos aquáticos e semi-aquáticos da Ilha de Santa Catarina, sul do Brasil
Provedor de dados: 104
Autores: Castilho,Pedro Volkmer de; Simões-Lopes,Paulo César.
This study analyzes the use of aquatic mammals by prehistoric societies of Santa Catarina Island, Southern Brazil. Samples from two archaeological sites were examined: Rio do Meio (RM) and Porto do Rio Vermelho (SCPRV). Nine aquatic mammal species were found: a) pinnipeds: Arctocephalus australis (Zimmerman, 1783) and A. tropicalis (Gray, 1872), and b) cetaceans: Eubalaena australis (Desmoulins, 1822), Delphinus delphis Linnaeus, 1758, Stenella frontalis (Cuvier, 1829), Steno bredanensis (Lesson, 1828), Tursiops truncatus (Montagu, 1821), Pontoporia blainvillei (Gervais &amp;amp; d'Orbigny, 1844) and a non-identified rorqual from the genus Balaenoptera Lacépède, 1804. Three especies of semi-aquatic mammals were also recorded: Hydrochoerus hydrochaeris...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zooarchaeology; Aquatic mammals hunting; Southern Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300008

Primeiro registro de Corvoheteromeyenia australis (Bonetto &amp;amp; Ezcurra de Drago) para o Brasil com chave taxonômica para os poríferos do Parque Estadual Delta do Jacuí, Rio Grande do Sul, Brasil
Provedor de dados: 104
Autores: Tavares,Maria da Conceição Marques; Volkmer-Ribeiro,Cecília; De Rosa-Barbosa,Rosária.
A taxonomic key is provided for the assembly of sponges of the floating meadows, in a protected deltaic area at southern Brazil. The roots of the water hyacinths Eichhornia azurea (Sw). Kunth and Eichhornia crassipes (Mart.) Solms-Laubach were seen to be the prefered substrates. The register of C. australis (Bonetto &amp;amp; Ezcurra de Drago, 1966) is the first for Brazil enhancing a discussion of the genus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater sponges; Floating meadows; Protected delta region; Southern Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200001

Distribuição sazonal e reprodução de Neocorbicula limosa (Maton) (Bivalvia, Corbiculidae) no Lago Guaíba, Rio Grande do Sul, Brasil
Provedor de dados: 104
Autores: Focht,Teimo; Veitenheimer-Mendes,Inga L.
Neocorbicula limosa (Maton, 1811) is the only species of that South American genus that occurs in the hydrographic basins of Rio Grande do Sul State, Brazil. Seasonal quantitative collections between 1995 and 1996 in the lake Guaiba were accomplished, with the aim to know the reproductive dynamics and environmental preferences of populations of N. limosa. A substratum constituted by medium to coarse sands at an 'average depth around 2m shown to be favorable to installation of population of N. limosa. The largest population density (2.496 ind./m²) was registered in summer. Embryos at various development phases were registered inside individuals. The shell sizes of these individuals started from 8mm in length. The embryo's size could reach ¼ of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bivalvia; Corbiculidae; Neocorbicula limosa; Guaíba Lake; Southern Brazil; Seasonal Observation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100002

Growth curve of Atlantoscia floridana (van Name) (Crustacea, Isopoda, Philosciidae) from a Brazilian Restinga Forest
Provedor de dados: 104
Autores: Araujo,Paula Beatriz; Bond-Buckup,Georgina.
The terrestrial isopod Atlantoscia floridana (van Name, 1940) occurs from the U.S.A. (Florida) to Brazil and Argentina. In the southernmost Brazilian State, Rio Grande do Sul, the species is recorded in many localities, in urban and in non-urban areas. The growth curve of Atlantoscia floridana based on field data is presented. The specimens were sampled from April, 2000 to October, 2001 at the Reserva Biológica do Lami (RBL), Rio Grande do Sul. Captured individuals were sexed and had their cephalothorax width measured, with the data analyzed with von Bertalanffy's model. The growth curves for males and females are described, respectively, by the equations: Wt = 1.303 [1 - e-0.00941 (t + 50.37)] and Wt = 1.682 [1 - e-0.00575 (t + 59.13)]. The curves showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curve; Oniscidea; Terrestrial isopod; Southern Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100001

First report of pigmentation dystrophy in terrestrial isopods, Atlantoscia floridana (van Name) (Isopoda, Oniscidea), induced by larval acanthocephalans
Provedor de dados: 104
Autores: Amato,José F. R.; Amato,Suzana B.; Araujo,Paula B.; Quadros,Aline F.
The observation of pigmentation alteration in isopod crustaceans induced by acanthocephalans, known as pigmentation dystrophy, has been documented in North America in species of the aquatic genera Asellus Geoffroy, 1764, Lirceus Rafinesque-Schmaltz, 1820, and Caecidotea Packard, 1871, and in Europe, in Asellus. Recently, three depigmented specimens of Atlantoscia floridana (van Name, 1940), a terrestrial isopod, occurring from &gt;Florida, USA to northern Argentina were found showing pigmentation dystrophy and harboring larval acanthocephalans. Photographic documentation of live and preserved, infected isopods is presented. Morphometric data and photomicrographs of the male, unencysted cystacanth specimen which allowed its placement in the genus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustacea; Cystacanth; Intermediate hosts; Pigmentation alteration; Southern Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000400026

Minilernaea floricapitella gen. nov., sp. nov. (Copepoda, Lernaeidae) from freshwater fishes of Southern Brazil
Provedor de dados: 104
Autores: Thatcher,Vernon E.; Huergo,Giuliano M.
Minilernaea floricapitella gen. nov., sp. nov. (Copepoda, Cyclopoida, Lernaeidae) a parasite of the freshwater fishes, Astyanax spp. and Corydoras ehrhardti Regan, 1912 of Santa Catarina and Paraná States, Brazil, is described, based on 10 postmetamorphic females. The new genus and species has the following characteristics that distinguish it from all other known lernaeids: (1) The body is very small (3.4-5.8 mm in length); (2) The head is provided anteriorly with six lobes and posteriorly with four undivided anchor arms. (3) The first pair of thoracopods is on the head, 2-4 are all on the "neck"; (4) Thoracopod 5 is reduced to a simple papillus near the genital pores; (5) The genital pores are equatorial in the hindbody and there is no pre-genital...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astyanax; Copepod parasite; Corydoras; Southern Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000400001

Ocorrência de Puma concolor (Linnaeus) (Felidae, Carnivora) em áreas de vegetação remanescente de Santa Catarina, Brasil
Provedor de dados: 104
Autores: Mazzolli,Marcelo.
Several reports on puma (Puma concolor) have been made in the State of Santa Catarina, Southern Brazil, most of them in remnant original habitats above 800 meters. These records show a thight relationship between the puma with altitude and mainly with habitat quality. The eastern boundary of the puma range isset by the mountain chains of Serra do Mar and Serra Geral. The definite implementation of National Parks and Reserves, studies of movements, and polimorfism analyses are suggested, in order to provide protected habitats and assure the genetic flow amongst puma populations.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Puma concolor; Records; Southern Brazil; Conservation.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400002

Residence patterns and site fidelity in bottlenose dolphins, Tursiops truncatus (Montagu) (Cetacea, Delphinidae) off Southern Brazil
Provedor de dados: 104
Autores: Simões-Lopes,Paulo C; Fabian,Marta E.
Residence patterns, habitat use, range, and some population estimate of the coastal bottlenose dolphin, Tursiops truncatus (Montagu, 1821), were documented in two coastal sites in southern Brazil: Laguna (Santa Catarina) (28º30'S; 48º55'W), and Imbe/Tramandai (Rio Grande do Sul) (29º58'S; 50º07'W). Regular observations were carried out at the Laguna system for 27 months (August 1989 to December 1991). The dolphins were photo-identified using natural permanent marks. Over 4,500 photograps were taken from shore grounds 6 to 14 meters away. Up to 51 dolphins have used the estuaries of Laguna's canal and Imarui-Santo Antonio's lagoon system in 1991. A stable group of nine animals has inhabited the Imbe/Tramandai area for over 13 years. Both sites were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tursiops truncatus; Bottlenose dolphin; Residence patterns; Site fidelity; Southern Brazil.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400012

Echinuria uncinata (Rudolphi) (Nematoda, Acuariidae) in Netta peposaca (Vieillot) (Aves, Anatidae) in South America
Provedor de dados: 104
Autores: 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

Uma nova espécie de Balloniscus Budde-Lund (Crustacea, Isopoda, Balloniscidae) do sul do Brasil
Provedor de dados: 104
Autores: Araujo,Paula Beatriz de; Zardo,Cristina M. Loyola.
Balloniscus glaber sp.n., is described from Rio Grande do Sul, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isopoda; Oniscidae; Balloniscus glaber sp.n; Taxonomy; Southern Brazil.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000400008

Kroyeria brasiliense sp. nov. (Copepoda, Kroyeriidae)a gill parasite of the shark, Galeorhinus vitaminicus de Buen, in Rio Grande do Sul State, Brazil
Provedor de dados: 104
Autores: Thatcher,Vernon E.; Pereira Júnior,Joaber.
Kroyeria brasiliense sp. nov. from the shark, Galeorhinus vitaminicus de Buen, 1950, from Rio Grande do Sul, State, Brazil, is described on the basis of 14 adult females. The new species is superficially similar to Kroyeria deetsi Dippenaar, Benz &amp;amp; Olivier, 2000, but differs from it in the following characters. The maxillipeds of the new species are large and project well beyond the lateral margins of the cephalothorax. Those of K. deetsi are much smaller. The third endopodal segments of K. deetsi are twice as long as the second endopodal segments and are provided with prominent marginal denticles. The second and third endopodal segments of the new species are rounded, of similar length and lack teeth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copepod parasite; Kroyeriid; Southern Brazil; South Atlantic.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400027

A synopsis of Galianthe (Rubiaceae) in Rio Grande do Sul, Southern Brazil, and a new endemic species from Serra Geral
Provedor de dados: 39
Autores: 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 &amp; 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

Improving collection efforts to avoid loss of biodiversity: lessons from comprehensive sampling of lycophytes and ferns in the subtropical Atlantic Forest
Provedor de dados: 39
Autores: Gasper,André Luís de; Eisenlohr,Pedro V.; Salino,Alexandre.
ABSTRACT Estimating species richness with herbarium data and new collections allows us to understand the distribution of diversity. We investigated the accuracy of lycophyte and fern sampling along a vegetation gradient in the subtropical Atlantic Forest in southern Brazil. We compiled lycophyte and fern collection metadata and estimated species richness and assessed sampling accuracy for sixty 50 x 50 km units using ACE, Chao 1, Chao 2, Jackknife 1 and Jackknife 2 estimators. We compiled data for 12,779 fern specimens of 441 species, 67 of which were sampled in only one unit (singletons) and 35 in two units (duplicates). Of the 60 units examined, only 11 had observed values that were above 70% of their estimated values, and 14 had observed levels between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botanical collections; Estimators; Hotspot; Pteridophyte; Southern Brazil; Species richness estimates.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200166

Species richness of pteridophytes in a montane Atlantic rain forest plot of Southern Brazil
Provedor de dados: 39
Autores: Dittrich,Vinícius Antonio de Oliveira; Waechter,Jorge Luiz; Salino,Alexandre.
A floristic survey of pteridophytes (ferns and fern allies) was carried out in a 1ha plot in the Pico do Marumbi State Park, Morretes, State of Paraná, Southern Brazil. The study area is covered with a closed ombrophilous forest (Brazilian Atlantic Forest) and lies approximately 630 m in elevation. All species and life-forms of pteridophytes growing in the plot were registered and most of them were collected for taxonomic identification. A total of 81 species, belonging to 17 families were registered. The richest were Polypodiaceae (12 species), Hymenophyllaceae (11) and Lomariopsidaceae (11). The richest genera were Asplenium (ten species), Elaphoglossum (10) and Trichomanes (six). Life-form composition was: epiphytes (49 species), terrestrials (28),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pteridophyta; Diversity; Species count; Floristics; Southern Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000300013

Sustainable production of bioactive alkaloids in Psychotria L. of southern Brazil: propagation and elicitation strategies
Provedor de dados: 39
Autores: Magedans,Yve Verônica da Silva; Rodrigues-Corrêa,Kelly Cristine da Silva; Costa,Cibele Tesser da; Matsuura,Hélio Nitta; Fett-Neto,Arthur Germano.
ABSTRACT Psychotria is the largest genus in Rubiaceae. South American species of the genus are promising sources of natural products, mostly due to bioactive monoterpene indole alkaloids they accumulate. These alkaloids can have analgesic, antimutagenic, and antioxidant activities in different experimental models, among other pharmacological properties of interest. Propagation of genotypes with relevant pharmaceutical interest is important for obtaining natural products in a sustainable and standardized fashion. Besides the clonal propagation of elite individuals, the alkaloid content of Psychotria spp. can also be increased by applying moderate stressors or stress-signaling molecules. This review explores advances in research on methods for plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic stress; Alkaloids; Elicitation; Monoterpenes; Plant propagation; Psychotria; Southern Brazil; Sustainability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400607

Coscinodiscophyceae and Fragilariophyceae (Diatomeae) in the Iguaçu River, Paraná, Brazil
Provedor de dados: 39
Autores: 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

Invasion and establishment of Ceratium furcoides (Dinophyceae) in an urban lake in Porto Alegre, RS, Brazil
Provedor de dados: 39
Autores: Silva,Luiza Nicoleite da; Medeiros,Caroline Modena de; Cavalcante,Kaoli Pereira; Cardoso,Luciana de Souza.
ABSTRACT Ceratium furcoides has received attention due its invasive behavior in South America and consequent alterations in local phytoplankton communities. Pedalinhos Lake had been dominated by chlorophytes until 2015, when the first occurrence of this dinoflagellate was detected. In order to investigate the colonization process of this species, we monitored the meteorological variables and phytoplankton abundance of this urban lake on a weekly basis from September 2015 to September 2018. At the beginning of the invasion process (Year 1), a peak density of 10,170 ind.mL-1 was recorded, with a significant decrease to 23 ind.mL-1, indicating an initial, unstable process of adaptation, with notable oscillation and reduction of cyanobacterial blooms. At this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dinoflagellate; Invasive species; Shallow lake; Subtropical; Southern Brazil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400654

Species richness of the genera Trachelomonas and Strombomonas (pigmented Euglenophyceae) in a subtropical urban lake in the Porto Alegre Botanical Garden, RS, Brazil
Provedor de dados: 39
Autores: Alves-da-Silva,Sandra Maria; Cabreira,Josemari da Cruz; Voos,José Guilherme; Lobo,Eduardo Alcayaga.
The objective of this study was to evaluate the taxonomic composition and richness of the genera Trachelomonas and Strombomonas (pigmented Euglenophyceae) in a subtropical urban lake (30º03'05"S; 51º10'34"W) within the Botanical Garden, in the city of Porto Alegre, located in the state of Rio Grande do Sul, Brazil, in order to contribute to the floristic knowledge of Euglenophyta in artificial urban lakes. From July 2007 to June 2008, we collected samples monthly from two sampling stations, using a 25-µm mesh plankton net. The samples were preserved in 4% formaldehyde. We evaluated the following environmental variables related to the water in the lake: ammonia content, silica content, organic matter content, dissolved oxygen concentration, temperature, pH,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euglenophyta; Environmental gradient; Shallow lake; Species richness; Southern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300010

Morpho-physiological responses of a subtropical strain of Cylindrospermopsis raciborskii (Cyanobacteria) to different light intensities
Provedor de dados: 39
Autores: Wojciechowski,Juliana; Fernandes,Luciano Felício; Fonseca,Fernanda Vitória Buck.
ABSTRACT The toxigenic cyanobacterium Cylindrospermopsis raciborskii previously restricted to tropical latitudes, has been increasingly reported in temperate lakes in recent decades. The causes of its biogeographical expansion are under investigation, but efficient physiological adaptation to changes in temperature and light regimes are likely to be involved. The present study evaluated the morpho-physiological responses of a strain of C. raciborskii from southern Brazil to nine light intensities, from 9 to 250 µmol photons m-2 s-1. Blooms of this cyanobacterium are regularly recorded in the region. Morpho-physiological responses were measured based on growth rate and trichome length. Cylindrospermopsis raciborskii showed slow growth at low light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cylindrospermopsis; Cyanobacteria blooms; Experiments; Light intensities; Morpho-physiological responses; Southern Brazil; Subtropical.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200232

Study of Euglenophyta in the Jacuí Delta State Park, Rio Grande do Sul, Brazil. 1. Euglena Ehr., Lepocinclis Perty
Provedor de dados: 39
Autores: Alves-da-Silva,Sandra Maria; Hahn,Anelise Torres.
This paper is the result of the study of pigmented Euglenaceae performed within the area of the Jacuí Delta State Park, located between parallels 29º56' and 30º03'S and meridians 51º12'and 51º18'W, with qualitative samplings at 25 stations, distributed over 8 islands, 8 "sacos" (i.e. small bays), 4 river mouths, 2 stream mouths and 3 channels in December/1993 and January/1994, and from February/1998 to December/1999. One hundred and fifty taxa of the Euglenophyceae were identified in the area. Currently 23 specific and infraspecific taxa of genus Euglena and 12 taxa of Lepocinclis are presented. E. acus Ehr. var. acus, and L. salina Fritsch var. salina were the taxa best represented in the region since they occured in over 40% of the samples studied. E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euglenophyta; Euglena; Lepocinclis; Jacuí State Delta Park; Southern Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062004000100011

Seabather's eruption: report of fourteen cases
Provedor de dados: 42
Autores: ROSSETTO,ANDRÉ LUIZ; SILVEIRA,FÁBIO LANG DA; MORANDINI,ANDRÉ CARRARA; HADDAD JUNIOR,VIDAL; RESGALLA JUNIOR,CHARRID.
Seabather's eruption is a papulo-pruritic dermatitis caused by the nematocysts of the larvae of the jellyfish Linuche unguiculata retained in the clothing fibers. Previously reported in Brazil, this work describes fourteen cases that occurred in the State of Santa Catarina, in southern Brazil. The new cases observed over a short period of time (the first half of January, 2012), at the height of the summer season, should alert health teams to possible epidemics on the coast of the state of Santa Catarina.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cnidaria; Dermatitis; Nematocysts; Public health; Southern Brazil.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100431

First record of growth rings for 11 native subtropical anuran species of South America
Provedor de dados: 42
Autores: BRUM,AMANDA J.C.; LOEBENS,LUIZA; SANTOS,MAURÍCIO B. DOS; CECHIN,SONIA Z.
Abstract: Skeletochronology is the most accurate method to estimate a population age structure. The methodology is based on the analysis of secondary bone tissue in order to count growth rings. This study aimed to provide initial data, allowing researchers to further work out in the age of individuals and populations, sampling evidence of the presence of growth rings in 11 native species (representing nine families) of a subtropical region of southern Brazil. Four bone samples of each specimen were used to perform the skeletochronological analysis: the penultimate phalanges of the 3rd and 4th fingers, the humerus, and the femur. The presence of growth rings was confirmed in the periosteal layer of the bones of all analyzed species. In comparison with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone chronology; Frogs; Lines of arrested growth; Southern Brazil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700619

Early Devonian (Late Emsian) shark fin remains (Chondrichthyes) from the Paraná Basin, southern Brazil
Provedor de dados: 42
Autores: RICHTER,MARTHA; BOSETTI,ELVIO P.; HORODYSKI,RODRIGO S.
ABSTRACT We report on the pioneering discovery of Devonian fish remains in the Paraná Basin, which represents the southernmost record of fishes from that period in mainland South America. The material comes from an outcrop at the lower portion of the São Domingos Formation, within Sequence C of the Paraná-Apucarana sub-basin in Tibagi, State of Paraná. Marine invertebrates are abundant in the same strata. The dark colored fish remains were collected in situ and represent natural moulds of partially articulated shark fin rays (radials). No elements such as teeth or prismatic cartilage have been preserved with the fins rays. This can be attributed to the dissolution of calcium-phosphatic minerals at the early stages of fossilization due to diagenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chondrichthyes; Devonian; Gondwana; Paraná Basin; Southern Brazil; Taphonomy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100103

Feeding ecology of the Neotropical otter Lontra longicaudis in the Lower Arroio Grande River, southern Brazil
Provedor de dados: 42
Autores: Souza,Kleisson S.; Bastazini,Vinicius A.G.; Colares,Elton P.
The present study was based on the analysis of spraints (n = 294) collected between December 2005 and November 2007. The importance of each type of prey was determined by absolute and relative frequency. Niche breadth was also estimated. The results were reported as mean (± SD) of relative frequencies. Fish were the main prey found in spraints (57.8 ± 7.0%). Fish from Callichthyidae family were the main prey, followed by Cichlidae, the species Hoplias malabaricus and the family Characidae. The frequencies of other fish and taxa were lower than 13.9% (absolute frequency) and 5.6% (relative frequency). Despite significant seasonal variations, (P = 0.001), niche breadth values were low in all seasons (0.39 ± 0.11). Therefore, Lontra longicaudis presented a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Neotropical otter; Niche breadth; Seazonal; Southern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100285

Beach ridges, foredunes or transgressive dunefields? Definitions and an examination of the Torres to Tramandaí barrier system, Southern Brazil
Provedor de dados: 42
Autores: 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

Diversity and seasonality of Scarabaeinae (Coleoptera: Scarabaeidae) in forest fragments in Santa Maria, Rio Grande do Sul, Brazil
Provedor de dados: 42
Autores: 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

Recurring extensional and strike-slip tectonics after the Neoproterozoic collisional events in the southern Mantiqueira province
Provedor de dados: 42
Autores: Almeida,Renato P.; Santos,Maurício G. M.; Fragoso-Cesar,Antonio R.S.; Janikian,Liliane; Fambrini,Gelson L.
In Eastern South America, a series of fault-bounded sedimentary basins that crop out from Southern Uruguay to Southeastern Brazil were formed after the main collisional deformation of the Brasiliano Orogeny and record the tectonic events that affected the region from the Middle Ediacaran onwards. We address the problem of discerning the basin-forming tectonics from the later deformational events through paleostress analysis of more than 600 fault-slip data, mainly from the Camaquã Basin (Southern Brazil), sorted by stratigraphic level and cross-cutting relationships of superposed striations, and integrated with available stratigraphic and geochronological data. Our results show that the Camaquã Basin was formed by at least two distinct extensional events,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Camaquã Basin; Earth Sciences; Neoproterozoic; Paleostress Analysis; Rift Basin; Southern Brazil.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200009

On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil
Provedor de dados: 42
Autores: Ferreira,José D.; Zamorano,Martín; Ribeiro,Ana Maria.
The genus Panochthus represents the last lineage of "Panochthini" recorded in the Pleistocene. This genus has a wide latitudinal distribution in South America, and in Brazil it occurs in the southern and northeastern regions. In this paper we describe new material (isolated osteoderms and caudal tube fragments) assigned to Panochthus from the state of Rio Grande do Sul (southern Brazil) and discuss some taxonomic issues related to Panochthus tuberculatus and Panochthus greslebini based on this material . The occurrence of P. greslebini is the first for outside the Brazilian Intertropical Region. In addition, we describe new diagnostic features to differentiate the osteoderms of P. greslebini and P. tuberculatus. Unfortunately, it was not possible to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glyptodontidae; Panochthus; Pleistocene; Southern Brazil; Osteoderms.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100015

First record of Scybalocanthon nigriceps (Harold, 1868) (Coleoptera: Scarabaeidae: Scarabaeinae) in Rio Grande do Sul state, southern Brazil
Provedor de dados: 42
Autores: FERREIRA,SHEILA C.; MARE,ROCCO A. DI; SILVA,PEDRO G. DA.
ABSTRACT The dung beetle, Scybalocanthon nigriceps (Harold, 1868), is recorded in Rio Grande do Sul state, Brazil, for the first time, at the Moreno Fortes Biological Reserve, municipality of Dois Irmãos das Missões, northwest region of the state, expanding the area of occurrence and distribution of this species in the country.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Dung beetle; New record; Distribution expansion; Southern Brazil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401635

Mollusc assemblage in an urban bay nearby a marine extractive reserve, Florianópolis - SC, Brazil
Provedor de dados: 49
Autores: Gandara-Martins,Ana Luiza; Almeida,Tito Cesar Marques de.
have described the spatio-temporal variation of mollusc assemblage in a coastal urban bay near a Marine Extractive Reserve (RESEX), where several human activities are performed. Uni and multivariate analyses were conducted considering spatial (six sampling stations) and temporal scale (30 surveys from 2002 to 2008) and two associations were recognized. We identified 48 species from 28 families belonging to four classes: Bivalvia, Gastropoda, Polyplacophora, and Scaphopoda. The Sand Tidal Flat association had a contribution of more than 90% of Anomalocardia brasiliana (Gmelin, 1791) as well as a higher diversity and similarity among surveys. The Mud Bottom association had a lower similarity among surveys due to the low abundance of species. The feeding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sand tidal flat; Mud bottom; Feeding habits; Anomalocardia brasiliana; Southern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200041

Melosira (Diatomeae) taxa from the Iguaçu River in southern Brazil
Provedor de dados: 49
Autores: Nardelli,Margaret Seghetto; Tremarin,Priscila Izabel; Ludwig,Thelma Alvim Veiga; Bueno,Norma Catarina.
Abstract The study of the genus Melosira in plankton samples from the lower Iguaçu River revealed the presence of four taxa: Melosira undulata (Ehrenberg) Kützing var. undulata, M. undulata var. normanni Arnott, M. varians C. Agardh and M. muscigena Iwahashi. We present illustrations of the frustules using light microscopy (LM), descriptions, and comments about the morphology of the four taxa. The analysis of Melosira muscigena under scanning electron microscopy revealed unprecedented details of the ultrastructure, such as the shape and distribution of the rimoportulae at the valve mantle. This is the first record of Melosira undulata var. undulata and the second of M. muscigena in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatoms; Southern Brazil; Taxonomy; Ultrastructure.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400202

Evaluation of trace metals (cadmium, chromium, copper and zinc) in tissues of a commercially important fish (Leporinus obtusidens) from Guaíba Lake, Southern Brazil
Provedor de dados: 52
Autores: Costa,Silene de Carvalho; Hartz,Sandra Maria.
Concentrations of Cd, Cr, Cu and Zn were determined in liver and muscle of Leporinus obtusidens. During 2003, the fishes (N = 54) were sampled from three sites along Guaíba Lake (north, central and south zones). The hypotheses tested assumed that there were differences in the location and date as to levels of contamination, association between the trace metal content in the fishes and size, and that the sex influenced metal accumulation. Possible risks of contaminated fish consumption to human health were also evaluated. The level of mean concentration (µg/g) of metals in tissues was higher in liver than muscle: [Cd] = 2.32♂; [Cr] = 0.08♀; [Cu] = 30.82♀ and [Zn] = 97.77♀. The results showed differences between the local and date sampling for all metals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trace metals; Leporinus obtusidens; Environmental contamination; Guaíba Lake; Southern Brazil.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100029

Reproductive biology of weakly electric fish Eigenmannia trilineata López and Castello, 1966 (Teleostei, Sternopygidae)
Provedor de dados: 52
Autores: Giora,Júlia; Fialho,Clarice Bernhardt.
This study described the reproductive biology of a population of the weakly electric fish Eigenmannia trilineata from southern Brazil, providing the information on the estimation of reproductive period, fecundity, spawning type, first maturation size, and analysis of gonadal morphology and histology of the species, relating these data to alimentary and abiotic characters. The species showed a relatively long reproductive period, a relative fecundity of 0.27 oocytes per mg of total weight and a parcelled spawning type. First maturation size estimated for the females was 80.5 mm and for the males 63.5 mm of total length. Sex ratio did not differ from 1:1 under a X²test (α= 0.01) during all the sampled months. Sexual dimorphism was related to total length,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproductive biology; Gymnotiformes; Eigenmannia; Abiotic factors; Southern Brazil.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300014

Essential oil yield and composition of Lamiaceae species growing in southern Brazil
Provedor de dados: 52
Autores: Agostini,Fabiana; Santos,Ana Cristina Atti dos; Rossato,Marcelo; Pansera,Márcia Regina; Santos,Paula Luciana dos; Serafini,Luciana Atti; Molon,Rosângela; Moyna,Patrick.
The Lamiaceae family has been described to be rich in essential oil. The aim of the present work was to identify the native species of Rio Grande do Sul with potential use as the aromatic plants. Seven species of the family were collected in the different localities of the state. The essential oils were obtained by 1h hydrodistillation in a Clevenger apparatus. The constituents were identified by comparing their GC Kovats retention indices (RI), determined with reference to a homologous series of n-alkanes and by comparing their mass spectral fragmentation patterns with literature data. Cunila incisa and Mentha aquatica resulted in the higher esssential oil yields (1.94% v/w and 0.93% v/w, respectively. The composition of M. aquatica was 80% methone, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lamiaceae species; Essential oil composition; Southern Brazil; Hydrodistillation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200026

Vegetation and pollen rain relationship from the tropical Atlantic rain forest in Southern Brazil
Provedor de dados: 52
Autores: Behling,Hermann; Negrelle,Raquel R. B.
The relationship between the southern Brazilian tropical Atlantic lowland rain forest and modern pollen rain was studied by pollen traps. The study was carried out on a one hectare plot undisturbed rain forest of the reserve Volta Velha and two secondary forests, ± 50 and 7 years old. About 248 identified tree, shrub and herb species (excluding epiphytes) of 50 families were represented by 126 different pollen and spore types (including non-local taxa). The calculated average influx of pollen rain from the native Atlantic rain forest was 12465 pollen grains per cm² and year. The influx from the ± 50 years old and from the 7 years old secondary forest was relatively low (4112 and 3667 grains per cm² and year, respectively) compared to the undisturbed rain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Southern Brazil; Modern pollen rain; Tropical Atlantic rain forest; Secondary forest.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500013

Environmental and subtidal fish assemblage relationships in two different brazilian coastal estuaries
Provedor de dados: 52
Autores: Vendel,Ana Lúcia; Bouchereau,Jean-Luc; Chaves,Paulo de Tarso.
The general structure and organization of the shallow water (&lt;1.5 m) fish assemblages were studied in two southern Brazilian ecosystems, a bay and a lagoon, under different marine or continental influences. The abiotic factors were measured to define the hydrology of the sites and the biotic descriptors were evaluated to characterize the assemblage structures. Transparency, salinity and organic matter were the abiotic factors which best distinguished the sites. A total richness of 69 species was observed. Ecological guilds, density, diversity and evenness indices values were different at each site. The hydrodynamism and geomorphology determined the structure and the organization of the fish assemblages in these shallow waters. It was observed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish biodiversity; Bay; Lagoon; Spartina marsh; Southern Brazil.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000600016

Effects of the burrowing crab Chasmagnathus granulata (Dana) on meiofauna of estuarine intertidal habitats of Patos Lagoon, Southern Brazil
Provedor de dados: 52
Autores: Rosa,Leonardo Cruz; Bemvenuti,Carlos Emilio.
This study aimed to evaluate the effects of the burrowing crab Chasmagnathus granulata on meiofauna at three intertidal habitats across a tidal exposure gradient (i.e., an emerged salt marsh, an emerged mudflat and a submerged mudflat) in an estuarine embayment of Patos Lagoon, Southern Brazil. Meiofauna community was dominated by nematodes and ostracods, following by copepods and turbellarians. Densities of all studied organisms varied significantly among habitats. Highest values were observed in submerged mudflat while lower in salt marsh. Nematodes were unaffected by crab in either habitat, whereas ostracod, copepod and turbellarian densities were significantly lower in disturbed than control areas in both mudflat habitats. Any meiofaunal group was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Burrowing crab; Chasmagnathus granulata; Meiofauna; Disturbance; Natural experiment; Southern Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200014

Falconiformes assemblages in a fragmented landscape of the Atlantic Forest in Southern Brazil
Provedor de dados: 52
Autores: Loures-Ribeiro,Alan; Anjos,Luiz dos.
An ecological analysis focused on distribution of Falconiformes, comprising abundance and morphology data, is provided. Samples were collected in a fragmented landscape within the Atlantic Rainforest, southern Brazil, between August and November 2001. Four main types of habitats were pinpointed among the 30 different sampling sites, while eight external morphological traits were employed. Twenty-one Falconiformes species were detected and jackknife estimates for regional richness reached 24.8 ± 2.56 species (p&lt;0.05). There were no differences between average number of diurnal birds of prey species in the different habitats under analysis (H-test, p&gt;0.05). Mantel's test for relative abundance and species morphology reveals weak association rates,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Distribution; Falconiformes; Habitat analysis; Richness; Southern Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100018

Late Holocene Vegetation History and Early Evidence of Araucaria angustifolia in Caçapava do Sul in the Lowland Region of Rio Grande do Sul State, Southern Brazil
Provedor de dados: 52
Autores: Behling,Hermann; Verissimo,Nuno; Bauermann,Soraia; Bordignon,Sergio; Evaldt,Andreia.
Little is known about the southernmost occurrence of small areas with Araucaria angustifolia populations in Caçapava do Sul in low elevated areas of Rio Grande do Sul State, about 130 km to the south of to the highlands of southern Brazil where the main distribution of Araucaria is found. This occurrence is about 130 km further south to the main area of Araucaria angustifolia which is on the highlands in southern Brazil. The question is whether this occurrence is natural, due to indigenous peoples, or due to plantation by post-Columbian settlers. To trace the origin of this little known southernmost existence of Araucaria angustifolia trees is of particular interest for conservation issues. To address this question we did a vegetation survey and studied a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Late Holocene; Araucaria angustifolia; Pollen analysis; Southern Brazil.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100700

Predicting biological parameters of estuarine benthic communities using models based on environmental data
Provedor de dados: 52
Autores: Rosa-Filho,José Souto; Bemvenuti,Carlos Emílio; Elliott,Michael.
This study aimed to predict the biological parameters (species composition, abundance, richness, diversity and evenness) of benthic assemblages in southern Brazil estuaries using models based on environmental data (sediment characteristics, salinity, air and water temperature and depth). Samples were collected seasonally from five estuaries between the winter of 1996 and the summer of 1998. At each estuary, samples were taken in unpolluted areas with similar characteristics related to presence or absence of vegetation, depth and distance from the mouth. In order to obtain predictive models, two methods were used, the first one based on Multiple Discriminant Analysis (MDA), and the second based on Multiple Linear Regression (MLR). Models using MDA had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prediction; Models; Benthos; Estuary; Southern Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400015

Mineral deficiencies in beef cattle from southern Brazil
Provedor de dados: 62
Autores: Valle,Stella de Faria; González,Félix Diaz; Rocha,Dimas; Scalzilli,Haydée Beatriz; Campo,Rómulo; Larosa,Verônica Lima.
Minerals play an important role in the cattle metabolism with great impact in productive and reproductive performance of animals raised on extensive grasslands. At present, there is a lack of information concerning mineral deficiency throughout the analysis of biological fluids in Rio Grande do Sul State (southern Brazil). The Central Valley region of this State is characterized by extensive production on natural pastures with poor mineral supplementation. The low levels of minerals found by previous studies on pastures in this area motivated this research. The aim of the present work was to detect possible mineral deficiencies in beef cows by determining concentrations of minerals in biological fluids and in pasture. There were determined concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral profile; Mineral deficiency; Southern Brazil; Beef cattle.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962003000700007

Triceratium moreirae sp. nov. and Triceratium dubium (Triceratiaceae - Bacillariophyta) from estuarine environments of Southern Brazil, with comments on the genus Triceratium C. G. Ehrenberg
Provedor de dados: 57
Autores: FERNANDES,L. F.; SOUZA-MOSIMANN,R. M. de.
A new species of Triceratiaceae is described for estuarine environments of Southern Brazil. The valve of Triceratium moreirae sp. nov. is triangular with elevations bearing ocellus and a rimoportula in their basis. The valvar surface has robust pseudoloculi, circular to polygonal, each one confining a group of areolae arranged in a typical pattern. A central larger areola is surrounded by 5-8 smaller areolae, and they are poroidal with domed cribra. A septum emerges from the valvocopula, having the base reinforced by ribs and the margins folded to the innerside of the valve. The new species is compared to the closely related diatom Triceratium dubium, which has the same pattern of areolar disposition, formation of septum and pseudoloculi. The main...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomy; Diatom; Triceratium; Estuary; Mangrove; Southern Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100020

Occurrence of Akodon cursor (Rodentia, Cricetidae) with 14, 15 and 16 chromosome cytotypes in the same geographic area in Southern Brazil
Provedor de dados: 54
Autores: Sbalqueiro,Ives José; Nascimento,André Paulo.
The karyotype of Akodon cursor (initially identified as A. arviculoides) had been reported with chromosomal numbers 14 and 15 in the South and Southeast and 16 in Northeastern Brazil. We found the three cytotypes in a region of Southern Brazil. The G-band patterns of these specimens were the same as those from southeastern and northeastern regions. Seventeen different combinations of chromosomes due to a complex rearrangement in pair 1 and pericentric inversions in pairs 2 and 3 were identified. Seven of these combinations are new to in the literature.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Akodon cursor; Chromosome cytotypes; Southern Brazil.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551996000400005

Chromosome studies in some Stevia. Cav. (Compositae) species from Southern Brazil
Provedor de dados: 54
Autores: Frederico,Adriana P.; Ruas,Paulo M.; Marin-Morales,Maria A.; Ruas,Claudete F.; Nakajima,Jimi N.
Karyotypes of six species of the genus Stevia from Southern Brazil were studied, utilizing root tip metaphases. All species were diploid with 2n = 22 chromosomes. It was possible to identify each species by chromosome morphology. The basic chromosome number for Brazilian species of Stevia is X = 11. This number is also found in almost all South American species. We suggest that in Stevia there is an evolutionary trend toward chromosomal rearrangement, caused mainly by pericentric inversions. It was found that, in addition to aneuploidy and polyploidy, chromosomal rearrangements are common in the tribe Eupatorieae.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromosome; Stevia. Cav.; Southern Brazil.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551996000400013

Retrospective study of 668 cultures for mycobacteria in a reference hospital for AIDS in Southern Brazil
Provedor de dados: 55
Autores: Pasqualotto,Alessandro Comarú; Rosa,Daniela Dornelles; Pereira,Maria do Carmo Fontoura; Targa-Ferreira,Roberto L.; Santos,Breno Riegel.
Although AIDS patients in other countries are frequently diagnosed as having atypical mycobacterial infection, in Southern Brazil there is a clinical impression that Mycobacterium tuberculosis is the rule rather than the exception. We made a retrospective review of cultures for mycobacteria at our hospital in order to determine the frequency of atypical mycobacteria and Mycobacterium tuberculosis in hospitalised patients in Porto Alegre, Brazil. Mycobacterium tuberculosis was the most frequent isolate (79.9%), regardless of HIV serostatus. Only 1.5% of the cultures yielded atypical mycobacteria, all of which in AIDS patients. Mycobacterium tuberculosis was diagnosed in most of the HIV-infected patients (81.2%). We conclude that Mycobacterium tuberculosis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; AIDS; Southern Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000200005

Prevalence, susceptibility profile for fluconazole and risk factors for candidemia in a tertiary care hospital in southern Brazil
Provedor de dados: 55
Autores: Aquino,Valério Rodrigues; Lunardi,Luciano W.; Goldani,Luciano Zubaran; Barth,Afonso Luis.
Bloodstream infections caused by yeast, Candida spp, are quite important clinically and epidemiologically due to a high mortality rate and an increasing number of non-albicans species with a more resistant (differentiated susceptibility) profile. We examined species prevalence and susceptibility profile for fluconazole and the risk for nosocomial infections by Candida spp at the Hospital de Clínicas de Porto Alegre, a general tertiary care hospital in southern Brazilian, through a retrospective study, beginning with positive cultures of hospitalized patients. The distribution by species in 131 documented episodes was as follows: Candida albicans (45%), C. parapsilosis (24.4%), C. tropicalis (15.3%), C. glabrata (6.9%), C. krusei (4.6%) and 3.8% other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluconazole; Candidemia; Risks; Southern Brazil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702005000500009

Epidemiologic and clinical characteristics of pregnant women living with HIV/AIDS in a region of Southern Brazil where the subtype C of HIV-1 infection predominates
Provedor de dados: 55
Autores: Manenti,Sandra Aparecida; Galato Júnior,João; Silveira,Elizângela da Silva; Oenning,Roberto Teixeira; Simões,Priscyla Waleska Targino de Azevedo; Moreira,Jeverson; Fochesato,Celine Maria; Brígido,Luís Fernando de Macedo; Rodrigues,Rosângela; Romão,Pedro Roosevelt Torres.
Southern Brazil has the highest prevalence rate of AIDS in the country and is the only region in the Americas where HIV-1 subtype C prevails. OBJECTIVE: We evaluated the epidemiologic and clinical characteristics of pregnant women living with HIV/AIDS in the South region of Santa Catarina, Brazil. METHODS: All pregnant women with HIV infection attending the obstetric outpatient clinic of Criciúma, State of Santa Catarina, in 2007 (n = 46) were invited to participate. Data of 36 eligible participants were obtained through a standardized questionnaire. RESULTS: The great majority were young, with a steady partner, low family income, low education level and referring early first sexual intercourse. Many reported use of illicit non-injecting drugs (55.5%) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AIDS; Serodiagnosis; HIV infections; Pregnancy; HIV-1 subtype C; Southern Brazil.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000400008

Association of CYP7A1 -278A&gt;C polymorphism and the response of plasma triglyceride after dietary intervention in dyslipidemic patients
Provedor de dados: 56
Autores: 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&gt;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

A high prevalence of human papillomavirus 16 and 18 co-infections in cervical biopsies from southern Brazil
Provedor de dados: 58
Autores: Jesus,Sheile Pinheiro de; Costa,Ana Carla Marques da; Barcellos,Regina Bones; Medeiros,Rubia Marília de; Silva,Cláudia Maria Dornelles da; Rossetti,Maria Lucia.
ABSTRACT HPV types 16 and 18 were studied in paraffin-fixed cervical biopsy collected in southern Brazil. HPV 16, HPV 18 and co-infection HPV 16/18 were identified in 10/57 (17.5%), 4/57 (7%) and in 43/57 (75.4%) samples, respectively. Southern Brazil has one of the highest prevalence rates of HPV 16/18 reported.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: HPV 16; HPV 18; Cervical biopsy; Southern Brazil.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500220

Production of mycotoxins by Fusarium graminearum isolated from small cereals (wheat, triticale and barley) affected with scab disease in Southern Brazil
Provedor de dados: 58
Autores: Geraldo,Márcia Regina Ferreira; Tessmann,Dauri José; Kemmelmeier,Carlos.
Fusarium fungi are known to be pathogenic for plants and mycotoxin producers. The in vitro production of deoxynivalenol and zearalenone was qualitatively evaluated in 24 different isolates of Fusarium graminearum collected from small cereals associated with the scab disease, in southern Brazil. Isolates were cultivated in rice during 14 days at 28ºC. Cultivates were extracted with methanol:water (40:60 v/v) and analyzed by thin layer chromatography. Other trichothecenes (diacetoxyscirpenol, fusarenon-X, neosolaniol and nivalenol) and zearalenol, often produced by Fusarium, were also analyzed. In the conditions used, it was possible to detect zearalenone and deoxynivalenol in 67% and 33% of the isolates, respectively. The presence of zearalenol,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fusarium graminearum; Mycotoxins; Scab; Small cereals; Southern Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000100011