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| Registros recuperados: 10 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 & 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 10 | |
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