Consulta: subjectFacets:"South Brazil"
Registros recuperados: 10
Data/hora: 08/06/2024 15:38:42

Distribuição geográfica e análise morfológica de Artibeus lituratus Olfers e de Artibeus fimbriatus Gray (Chiroptera, Phyllostomidae) no Rio Grande do Sul, Brasil
Provedor de dados: Zoologia
Autores: Rui,Ana Maria; Fabián,Marta Elena; Menegheti,João Oldair.
A study has been made on the geographical distribution and comparative external and cranial morphological analysis of Artibeus lituratus Olfers, 1818 and Artibeus fimbriatus Gray, 1838 (Chiroptera, Phyllostomidae) in the state of Rio Grande do Sul, Brazil. A. lituratus and A. fimbriatus were found to be sympatric in the state north to the "Planície Costeira", in the "Depressão Central", in the hillsides of "Serra Geral", and in the northern region of the state, areas previously covered by forests. The southernmost point for Artibeus Leach, 1821 distribution is 30º South, and A. lituratus and A. fimbriatus are the two species found more to the south. The two species studied do not show sexual dimorphism as to external characteristics. Cranial measurements...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phyllostomidae; Artibeus lituratus; Artibeus fimbriatus; Distribution; Morphology; South Brazil.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200011

Aspectos da reprodução e dinâmica populacional de Chione pubera (Bory Saint-Vicent) (Bivalvia, Veneridae) no sul do Brasil
Provedor de dados: Zoologia
Autores: Borzone,Carlos Alberto; Vargas,Kelly Midori; Pezzuto,Paulo Ricardo; Tavares,Yara Aparecida Garcia.
Material collected with a 2-meter wide beam trawl during eight surveys conducted from December 1995 to February 1997 was used for a first preliminary description of the reproduction and population dynamics of the edible venerid bivalve Chione pubera (Bory Saint-Vicent, 1827). Greatest catches were found between 30 to 35 meters depth, on fine sandy bottoms with a mud content lower than 10%. Dry weight meat condition index showed highest values during autumn and lowest values from winter to summer months. Histological analysis of gonadal tissue showed a continuous reproduction, with peaks of maturation on autumn and spring, Spawning was related with the increase of water temperature, that occurs twice a year in the region as a consequence of a particular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chione pubera; Reproduction; Venerid; South Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200003

Primeiros dados quali-quantitativos do mexilhão-dourado, Limnoperna fortunei (Dunker), no Delta do Jacuí, no Lago Guaíba e na Laguna dos Patos, Rio Grande do Sul, Brasil e alguns aspectos de sua invasão no novo ambiente
Provedor de dados: Zoologia
Autores: Mansur,Maria Cristina Dreher; Santos,Cíntia Pinheiro dos; Darrigran,Gustavo; Heydrich,Ingrid; Callil,Claudia T.; Cardoso,Felipe Rossoni.
At the end of 1998 and the beginning of 1999, the golden mussel Limnoperna fortunei (Dunker, 1857), Mytilidae, originating from Southeast Asia, was registered for the first time in the Guaíba Lake Basin, Rio Grande do Sul State, Brazil. Quantitative samples were taken since the first register and for two years at various localities in the Jacuí Delta, northern limit of Guaíba Lake, and in the south limit of the later where it empties into Patos Lagoon. Samplings in Patos Lagoon revealed the presence of L. fortunei in October 2000 at Arambaré (30º54'S, 51º30'W) and in January 2001 at São Lourenço do Sul (31º20'S, 51º58'W). Quantitative samplings on roots of water hyacinths Eichhornia azurea (Sw.) Kunth and E. crassipes (Mart.) Solms-Laubach, on rhizomes of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrofouling; Mytilidae; Population density; South Brazil; Substratum preferences.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000100009

Nova espécie de Zischkaita Bechyné e notas taxonômicas em Galerucini (Coleoptera, Chrysomelidae, Galerucinae)
Provedor de dados: Zoologia
Autores: Moura,Luciano de A.
A new species of Zischkaita Bechyné, 1956, Z. serrana sp. nov. are described from São Francisco de Paula and Cambará do Sul, Rio Grande do Sul State, Brazil. Two new combinations are proposed: Zischkaita bucki (Bechyné &amp;amp; Bechyné, 1962), comb. nov., removed from Isotes and Cochabamba volxemi (Baly, 1889), comb. nov., transferred from Paranapiacaba.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical; New combinations; New species; South Brazil; Taxonomy.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000400014

Invertebrados cavernícolas da porção meridional da província espeleológica do Vale do Ribeira, sul do Brasil
Provedor de dados: Zoologia
Autores: Pinto-da-Rocha,Ricardo.
From 1986 to 1992, I surveyed the invertebrate fauna of twelve limestone caves from South Ribeira Valley (State of Paraná, Brazil). Associated to walls in the entrace zone live Enoploctenus and Blechroscelis spiders, Goniosoma opilionids, Strinalia crickets, Latebraria amphipyroides moths, and Culicidae and Sciaridae dipterans. In aphotic zone, occur Plato spiders, Daguerreia inermis opilionids, Pseudonannolene strinatii diplopods, Smicridea caddisflies and the aquatic crustacean Aegla paulensis. I found in both zones Ctenus fasciatus spiders. Paronella collembolans, Zelurus travassosi heteropterans, Cholevidae and Anthribidae beetles, Phoridae dipterans and Braconidae wasps. One of the most important energy sources in these caves is the hematophagous bat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cave fauna; Distribution; Guano; South Brazil; Troglomorphic taxa.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000200005

Plankton community dynamics in a subtropical lagoonal system and related factors
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: DONADEL,LETÍCIA; CARDOSO,LUCIANA DE S.; TORGAN,LEZILDA C.
ABSTRACT Changes of the plankton community in a shallow, subtropical lagoonal system and its relation to environmental conditions were investigated during an annual cycle to provide information on its spatial and seasonal variation pattern. The study carried out at four sites (three in the Peixe lagoon and one in the Ruivo lagoon), which are located in the Lagoa do Peixe National Park, southern Brazil. The system has a temporary connection to the Atlantic Ocean by a narrow channel. The phytoplankton density was higher in the Peixe lagoon whereas the specific richness was higher in the Ruivo lagoon which is also a site with the lower salinity. The phytoplankton biomass near the channel showed seasonal variation with the highest value in fall and lowest in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal lagoon; Microalgae; Ramsar site; South Brazil.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100249

Loricate Choanoflagellates from the South Atlantic coastal zone (~32 °S) including the description of Diplotheca tricyclica sp. nov.
Provedor de dados: Biota Neotropica
Autores: Bergesch,Marli; Odebrecht,Clarisse; Moestrup,Øjvind.
The biodiversity of marine heterotrophic protists is poorly known in the South Atlantic coastal zone (~32 °S) especially regarding the nanoflagellates. The presence of loricate choanoflagellates was reported for the first time in the Patos Lagoon estuary and the adjacent coastal zone. Seventeen species of eleven genera of loricate choanoflagellates were observed between October 1998 and May 2000 in fixed water samples (lugol's solution + glutaraldehyde) in a JEM 100-SX transmission electron microscope. Most species were recorded in euhaline and mixopolyhaline waters during the spring and summer, none in autumn and a few (four) in winter. The absence of choanoflagellates at the more sheltered inshore stations is due freshwater influence, and at the beach...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanoflagellates; Taxonomy; Heterotrophic protists; South Brazil.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400010

Clinostomum complanatum (Digenea, Clinostomidae) density in Rhamdia quelen (Siluriformes, Pimelodidae) from South Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Vianna,Rogério Tubino; Pereira Júnior,Joaber; Brandão,Deodoro Atlante.
The density of Clinostomum complanatum metacercariae by the body regions and among the size classes of Rhamdia quelen was compared. The host size classes were defined by cluster analysis, using weight and total length as attributes. These values were related with environmental characteristics and host biological data. In all the host size classes H and PeF, CF and PF, and P and AF regions pairs, showed similar density (tested by X² test). The hosts with 30-36 cm showed largest parasite density in all the regions, except in CAV. Fishes smaller than 11 cm did not show significant differences of parasite density in all body regions. In the other classes, H was the most infected region, followed by PeF. The results suggested that the environmental conditions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clinostomum complanatum; Rhamdia quelen; Metacercariae density; Jundiá; South Brazil; Fish disease; Aquaculture.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000500016

Offshore distribution patterns of the cyanobacterium Trichodesmium erythraeum ehrenberg and associated phyto- and bacterioplankton in the southern Atlantic coast (Paraná, Brazil)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Siqueira,Adriana; Kolm,Hedda Elisabeth; Brandini,Frederico Pereira.
Studies were carried out on Thrichodesmium erythraeum occurring on the inner shelf in the state of Paraná, Brazil. Temperature, salinity, rainfall, wind velocity, total bacteria, bacterial biomass, chlorophyll-a, phytoplankton, Anabaena sp., Merismopedia sp. and T. erythraeum densities were measured in surface water. Centric and pennate diatoms, Anabaena sp. and Merismopedia sp. were most abundant at 15 m isobath, while dinoflagellate abundance was relatively constant among stations. Similarly, total bacterial densities were relatively homogeneous throughout the sampling area, suggesting that blooms of T. erythraeum were not yet in the senescent phase. Results showed that T. erythraeum was capable of surviving in relatively inhospitable environmental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichodesmium erythraeum; Bloom; Cyanobacteria; Phytoplankton; South Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300018

Daily birth numbers in Passo Fundo, South Brazil, 1997-1999: trends and periodicities
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Mikulecky,M.; Lisboa,H.R.K.
Between October 6, 1997 and April 30, 1999, 5011 births (mean: 8.76 per day) were registered in the city of Passo Fundo, South Brazil. The sequence of 572 daily birth numbers was not random (iteration test). Neyman distribution (m = ¥) showed the best fit. Clusters of days with higher birth numbers alternated with days with low numbers of births. Periodogram analysis revealed a significant periodicity of 6.98 days. The cosinor regression, testing 10 a priori supposed period lengths, found significant seasonality peaking in August-September and significantly highest birth numbers on Thursdays. Among the lunar and solar rotation cycles, the tropic lunar cycle and its 4th harmonic were most pronounced, in agreement with results concerning natality in Germany...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Births; South Brazil; Periodogram; Cosinor; Seasonality; Weekly rhythm; Multiseptans; Cosmogeophysical-biomedical parallelism; Solar and lunar cycles.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000800017