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| Junior Baginski,Leandro; Florentino,Alexandro Cezar; Fernandes,Izaias Médice; Penha,Jerry Magno Ferreira; Mateus,Lúcia Aparecida de Fátima. |
| O presente trabalho avaliou a distribuição espacial e temporal da riqueza de espécies de peixes da zona litoral vegetada de 15 lagoas marginais da planície de inundação do Rio Cuiabá, Pantanal. As lagoas foram amostradas em três períodos ao longo da sessão seca (junho, setembro e dezembro de 2005), por meio de nove lances de peneira, distribuídos sistematicamente a uma distância mínima de cinco metros um do outro. Capturamos 12.784 indivíduos pertencentes a sete ordens, 21 famílias e 98 espécies. A maioria das espécies capturadas foi rara e apresentou distribuição geográfica restrita. A intensificação da seca não afetou a distribuição espacial das espécies e a perda de espécies nas diferentes ordens, ao longo da seca, foi proporcional. Tanto a abundância... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Efeito da seca; Distribuição de abundâncias; Distribuição espacial; Extinção local. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000300025 |
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| Fontana,Márcio; Takemoto,Ricardo Massato; Malta,José Celso de Oliveira; Mateus,Lúcia Aparecida de Fátima. |
| In this study, 446 fishes were analyzed: 190 Pygocentrus nattereri, 193 Serrasalmus maculatus, and 63 S. marginatus.They were captured in two bays, upper and lower Caiçara, in the upper Paraguay River basin, during one hydrological cycle from May 2008 to April 2009. Six species of Branchiura were found: Dolops bidentata, D. longicauda, Dolops sp., Argulus multicolor, A. chicomendesi, and Dipteropeltis hirundo. All fish species were infested by more than one species of Branchiura and the overall prevalence was 33.4%. The following prevalences were observed: 52.6% in P. nattereri; 20.3% in S. maculatus, and 15.8% in S. marginatus. The relative condition factor (Kn) differed significantly between parasitized and non parasitized individuals only in P.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argulus; Dolops; Pygocentrus; Relative condition factor; Serrasalmus. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300019 |
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| Tondato,Karina Keyla; Mateus,Lúcia Aparecida de Fátima; Ziober,Simoni Ramalho. |
| An analysis was made of the spatial and temporal distribution of the abundance and composition of fish larvae assemblies, aiming to ascertain correlations with biotic and abiotic factors in marginal lagoons of the Cuiabá River floodplain in Brazil's Pantanal wetlands. Samples were collected bimonthly in the pelagic region of the marginal lagoons (fourteen lagoons) close to the littoral zone covered by aquatic macrophytes from December 2006 to April 2007. The captured individuals consisted of 2,739 larvae, represented predominantly by Triportheus spp. (Characidae), Parodontidae, Anostomidae, Characidae and Serrasalmidae. Larval density varied among the sample lagoons in December, but the biotic (zooplankton density) and abiotic (water temperature,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ichthyoplankton; Floodplain; Cuiabá River; Natural nurseries. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100015 |
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| Ziober,Simoni Ramalho; Bialetzki,Andréa; Mateus,Lúcia Aparecida de Fátima. |
| Researches on ichthyoplankton seems to be an important tool to identification of spawning areas and periods for freshwater fish. Ichthyoplankton was sampled monthly in the headwaters of the Cuiabá River, upper Paraguay River basin, (Mato Grosso State, Brazil), and in four of its tributaries, between November 2007 and March 2008, to evaluate the spatial and temporal distribution of fish eggs and larvae and the influence of regional and local variables on their distribution. In total, 22,067 eggs and 1,045 larvae were collected. A significant negative correlation was found between egg density and the variables of river level and flow volume. Larval density was not significantly correlated with any of the regional variables. The egg and larval densities were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater fishes; Ichthyoplankton; Spatial-temporal distribution; Upper Paraguay basin. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000100012 |
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