Consulta: subjectFacets:"Central Brazil"
Registros recuperados: 15
Data/hora: 05/06/2024 05:25:39

Breeding activity of Scinax centralis (Anura, Hylidae) in Central Brazil
Provedor de dados: 76
Autores: Alcantara,Mariana B.; Lima,Leôncio P.; Bastos,Rogério P.
From January, 1997 to April, 1998, we studied breeding activity in a population of Scinax centralis Pombal &amp;amp; Bastos, 1996, in the state of Goiás, inside the Cerrado Biome, Brazil. The behavior of males and females in the choruses, the relationships between environmental variables and the presence of individuals, the spatial distribution pattern, amplexus and clutches were analyzed. The breeding season occurred from November to May. The majority of males began to call when they entered the chorus; they were defending their calling sites against other males. We found a positive correlation between the number of females and males in the choruses, but no significant correlation was observed between the operational sexual ratio (OSR, number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scinax centralis; Spatial distribution; Breeding; Aggressive behavior; Central Brazil.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000400008

Legumineira: cultura forrageira para produção de proteína.
Provedor de dados: 14
Autores: SEIFFERT, N. F.; THIAGO, L. R. L. de S.
Esta publicação propõe a popularização do emprego de bancos de proteína (legumineiras) no sistema de produção bovina, na região do Brasil Central. Cultivos de guandu (Cajanus cajan) e de leucena (Leucaena spp.), incluídos como uma fração dos pastos demonstram ser uma ferramenta de grande utilidade para corrigir a deficiência de proteína que ocorre nas pastagens de gramíneas durante a estação seca. A publicação oferece orientação quanto ao planejamento, cultivo e manejo de legumineiras de guandu e leucena, apresenta dados de produção de forragem, proteína e resposta animal, bem como aborda o emprego desta leguminosas arbustivas em consorciações.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Banco de proteína; Leucena; Consorciação; Brasil central; Farming system; Protein bank; Feeding; Mixed pasture; Central Brazil; Alimentação; Bovino; Cajanus Cajan; Cerrado; Guandu; Leucaena; Sistema de Produção; Cattle.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/327163

New species of the Corumbataia cuestae group (Siluriformes: Loricariidae) from the Rio Tocantins basin, with comments on its phylogenetic relationships
Provedor de dados: 83
Autores: Thimotheo,Mateus Giovanni Rocha; Benine,Ricardo Cardoso; Oliveira,Claudio; Silva,Gabriel de Souza da Costa e.
Abstract A new species of Corumbataia is described from Rio Maranhão, Rio Tocantins basin, central Brazil. The new species is distinguished from all congeners by the presence of a small, naked area on snout tip; by having the abdomen covered with small platelets forming a shield which reaches the lateral mid-ventral plates; by the anterior profile of the head rounded in dorsal view; by the lower lip not reaching the transversal line of the pectoral girdle; and by the presence of 28 or 29 vertebrae. High genetic divergence in mitochondrial cytochrome c oxidase subunit I (COI) further supports the validity of this new species. Our phylogenetic analysis shows a derived subclade in Corumbataia, herein named as the Corumbataia cuestae group, composed of the new...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytochrome C Oxidase; Diversity; Freshwater fishes; Hypoptopomatinae; Central Brazil.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000400207

New species of thorny catfish, genus Leptodoras Boulenger (Siluriformes: Doradidae), from Tapajós and Xingu basins, Brazil
Provedor de dados: 83
Autores: Birindelli,José L. O.; Sousa,Leandro M.; Pérez,Mark H. Sabaj.
A new species of thorny catfish (family Doradidae) is described as a member of genus Leptodoras Boulenger by having a modified oral hood and first gill arch with enlarged accessory lamellae extending well onto medial face of gill filaments. The new species is distinguished by three characteristics unique within Leptodoras: gas bladder moderately sized (not reduced) with simple walls (diverticula absent), and paired bony capsules on anteriormost vertebrae reduced to paired cup-like laminar ossifications separated by triangular septum. The new species was discovered from material recently collected in the Tapajós basin at Serra do Cachimbo and in the headwaters of rio Xingu. The species description is supplemented by a detailed osteological description,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptodoras oyakawai; Central Brazil; Rio Jamanxim; Rio Teles Pires; Rio Culuene.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300020

A new characid fish, Hyphessobryconhexastichos (Characiformes: Characidae) from Chapada dos Parecis, Mato Grosso, Brazil
Provedor de dados: 83
Autores: Bertaco,Vinicius A.; Carvalho,Tiago P.
A new characid species, Hyphessobrycon hexastichos, is described from the upper rio Tapajós, Mato Grosso, Brazil. The new species is distinguished from all other Hyphessobrycon species by the presence of black zigzag longitudinal lines between longitudinal rows of scales in the lateral of body, maxilla with 3-5 teeth, i,6 pelvic-fin rays, 18-22 branched anal-fin rays, 4 scale rows above and 3 scale rows below of lateral line, lateral line with 9-13 perforated scales, and 33-35 scales in a longitudinal series.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical; Amazon basin; Rio Tapajós; Rio Juruena; Central Brazil; Taxonomy.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300013

Relationships between water transparency and abundance of Cynodontidae species in the Bananal floodplain, Mato Grosso, Brazil
Provedor de dados: 83
Autores: Melo,Cesar Enrique de; Lima,Jane Dilvana; Silva,Eliete Francisca da.
The Cerrado in the Central Brazil is currently one of the most threatened ecosystems in the world. As a result, the aquatic habitats in this biome also undergo great impacts. Alterations related to land-use change increase sediment loadings in rivers, streams and lakes, resulting in sedimentation and decrease in water transparency. Water transparency determines underwater visibility conditions, and as a consequence fish assemblages respond to spatial and temporal changes in this variable. This work aimed to examine the influence of transparency on the abundance and distribution of Cynodontidae species, a visually oriented predatory fish group. Fish sampling was conducted in 15 sites located between Mortes and Araguaia rivers in the Bananal floodplain, Mato...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish ecology; Cerrado; Central Brazil; Conservation; Araguaia.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200017

Floristic composition and community structure of a seasonally deciduous forest on limestone outcrops in Central Brazil
Provedor de dados: 88
Autores: Felfili,Jeanine M.; Nascimento,André R. Terra; Fagg,Christopher William; Meirelles,Elisa Maria.
The objective of this study was to analyze the floristic composition and structure of the tree component in a seasonally deciduous forest on limestone outcrops, located in the northeast region of Goiás State, Brazil. A sample composed of 25 randomly sampled plots of 20 x 20 m (400 m²) within a 50 ha forest, was measured. All woody individuals &gt; 5 cm diameter at breast height (DBH) had their diameter and height measured. The tree community was composed of 39 species with a density of 734 individuals ha-1; the richest families were Leguminosae (11 species), Bignoniaceae (4 species) and Apocynaceae (4 species). The forest had a basal area of 16.37 m² ha-1, with the most important species Cavanillesia arborea (3.26 m² ha-1), Pseudobombax tomentosum (2.35 m²...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: "Caatinga"; Central Brazil; "Cerrado" biome; Seasonally dry forests.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000400007

Síndromes de dispersão de espécies arbustivo-arbóreas em cerrado sensu stricto do Brasil Central e savanas amazônicas
Provedor de dados: 88
Autores: VIEIRA,DANIEL L.M.; AQUINO,FABIANA G.; BRITO,MÁRCIA A.; FERNANDES-BULHÃO,CLARISSA; HENRIQUES,RAIMUNDO P. B.
O objetivo deste trabalho foi identificar as proporções das síndromes de dispersão de sementes em áreas de cerrado sensu stricto do Brasil Central, comparando-as com as de áreas isoladas de savanas amazônicas. Foram utilizadas listas de espécies de nove áreas de cerrado e cinco áreas de savanas amazônicas. Determinou-se a similaridade florística entre as áreas. As síndromes de dispersão de espécies ocorrentes nestas áreas foram determinadas a partir de dados da literatura. Utilizou-se o teste Qui-quadrado (chi²) a fim de detectar possíveis diferenças nas proporções de zoocoria e anemocoria entre as áreas de cerrado e entre as áreas de savanas amazônicas. As médias entre as duas regiões foram comparadas pelo teste t. Não foram encontradas diferenças...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed dispersal syndromes; Cerrado sensu stricto; Central Brazil; Amazonian savannas.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000200009

A new species of Hylesia Hübner (Lepidoptera, Saturniidae, Hemileucinae) from Brazilian Cerrado
Provedor de dados: 104
Autores: Camargo,Amabílio J. A. de.
The genus Hylesia Hübner, [1820] has about 110 exclusively neotropical species, widely distributed from Mexico to Argentina. Here a new species (Hylesia pseudomoronensis sp. nov.) from Brazil is described. The specific name is allusive to the morphological similarity with H. moronensis Lemaire, 1976.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central Brazil; Neotropical; New moth.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100025

Stonefly (Plecoptera) fauna of streams in a mountainous area of Central Brazil: abiotic factors and nymph density
Provedor de dados: 104
Autores: Bispo,Pitágoras da Conceição; Froehlich,Cláudio Gilberto; Oliveira,Leandro Gonçalves.
The stonefly (Pleeoptera) nymphs of streams of the Almas River basin, Pirenópolis, Goiás State, Central Brazil, and some abiotie factors that might affect their temporal distribution were studied. Nymphs were sampled monthly (June 1993 to July 1994) in five stations with a Surber sampler, and each sample consisted of 20 units totalling 2 m². In each station, stream velocity, discharge, temperature, electrical conductivity and pH were measured in order to assess their influence on the density of nymphs. Nymphs were identified to genus level. In general, the annual variation in density of nymphs, in four stations, showed that the seasonal variation was not clearly influenced by the annual rain cycle. In the case of the one of the stations, where numbers of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleeoptera; Nymphs; Central Brazil; Abiotie factors; Seasonality.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500026

Stonefly (Plecoptera) fauna in a mountainous area of Central Brazil: composition and adult phenology
Provedor de dados: 104
Autores: Bispo,Pitágoras C.; Froehlich,Cláudio G.; Oliveira,Leandro G.
A survey of the stonefly (Plecoptera) fauna of streams of the Almas River basin, Pirenópolis, Goiás State, Central Brazil, is presented as well as data of some factors that could affeet the temporal distribution of the adults. For checking adult phenology, light sources were used in three stations from June 1993 to Jully 1994. The sampled individuais were identified to species or morphospecies, as possible. In this study, 301 individuais belonging to the perlid genera Anacroneuria Klapálek, 1909, Kempnyia Klapálek, 1916 and Macrogynoplax Enderlein, 1909 were collected. Adults of most species were collected along the studied period, except for those of Kempnyia that were restricted to the warm-rainy season, the same pattern for this genus in southeastern...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plecoptera; Central Brazil; Adult phenology; Seasonality.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500025

Effectiveness of quadrat sampling on terrestrial cave fauna survey - a case study in a Neotropical cave
Provedor de dados: 3
Autores: Bichuette, Maria Elina; Simões, Luiza Bertelli; von Schimonsky, Diego Monteiro; Gallão, Jonas Eduardo.
Quadrat sampling is a method used for a long time in plant ecology studies but only recently it has been used with focus on fauna. For the cave fauna samplings, there are rare works applying this methodology. The present study compared the methods of quadrat sampling with direct search qualitative for terrestrial cave fauna. For this, we conducted five sampling collections in a limestone cave in central Brazil. Quadrat sampling contributed with 121 exclusive species and 716 specimens and direct search qualitative method contributed with 91 exclusive species and 355 specimens. Mann-Whitney test evidenced significant differences between the two methods. We demonstrated that quadrat sampling method was slightly more efficient to analyze the species richness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cave fauna; Terrestrial invertebrates; Central Brazil; Sampling methodology.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28374

Paleoenvironmental Evolution of Continental Carbonates in West-Central Brazil
Provedor de dados: 42
Autores: OLIVEIRA,EMILIANO C.; ROSSETTI,DILCE F.; UTIDA,GISELLE.
ABSTRACT This paper presents a sedimentological and stratigraphical study of Quaternary (Middle to Late Pleistocene/Holocene) continental carbonates outcrops inside Pantanal Basin and its surroundings, especially in Serra da Bodoquena, Pantanal do Miranda and Corumbá/Ladário plateau, in the state of Mato Grosso do Sul, as well as in Serra das Araras, in the state of Mato Grosso. The aim is to understand the depositional paleoenvironments and analyse climate and tectonic influences in their genesis and evolution. The results show that the deposition of these continental carbonates started in the Middle to Late Pleistocene and have continued, with some interruptions, until the present days. Sedimentary successions were identified in the different areas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central Brazil; Continental carbonates; Holocene; Paleoenvironments; Pantanal Basin; Pleistocene.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200407

New record of Amphisbaena fuliginosa (Squamata, Amphisbaenidae) for the Cerrado Biome, in an area of extensive cattle ranching
Provedor de dados: 49
Autores: Lemos,Frederico Gemesio; Facure,Kátia Gomes.
Samples of Amphisbaena fuliginosa from the Cerrado biome are scarce and additional data are needed to clarify the geographic distribution and patterns of differentiation of this species. During field works at a cattle farm in the south of the state of Goiás, Central Brazil, we found an adult individual of A. fuliginosa. Our specimen represents the southernmost record for the species, extending its distribution 150 km. The color is similar to that described for other specimens from Goiás state, corroborating the uniform pattern observed for Cerrado populations. We suggest that the fossorial habits of A. fuliginosa may allow its occurrence in anthropogenic habitats by offering protection against the changes in natural vegetation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central Brazil; Color pattern; Environmental changes; Fossorial habits; Geographic distribution; Herpetofauna.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000100031

Selective advantage conferred by resemblance of aposematic mimics to venomous model
Provedor de dados: 49
Autores: França,Frederico Gustavo Rodrigues; Braz,Vívian da Silva; Araújo,Alexandre Fernandes Bamberg de.
Abstract Mimicry is an excellent example of how natural selection can act on color, morphology, and behavior of species. Herein we assess predation rates on coral snake mimics in Central Brazil, a region with many mimics but only a single model, to answer the following questions: (i) Do predators avoid attacking coral snake mimics? (ii) Does the degree to which mimics resemble their venomous model affect the frequency of predator attacks? (iii) Do predators attack different body regions in mimics with different color patterns? Our experiment was conducted in the Chapada dos Veadeiros National Park, in the municipality of Alto Paraíso de Goiás, state of Goiás, Brazil. To evaluate predation rates on the different mimic patterns, we made 2,400 clay snake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mimicry; Coral snake; Central Brazil; Predation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300206