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| MACHADO-EVANGELISTA,Mariana; ESGUÍCERO,André Luiz Henríques; ARCIFA,Marlene Sofia; PEREIRA,Thiago Nilton Alves. |
| The conservation of diverse and well-distributed fish taxa, as the genus Leporinus, relies intrinsically on the knowledge of the ecological attributes of its representatives. Aiming to increase this knowledge, studies on diet and ecomorphology are ideal to provide important information about species ecology. Thus, this study aimed to analyze aspects of feeding ecology of L. reticulatus, from the upper Rio Juruena, Mato Grosso State, Brazil. The diet of specimens in different ontogenetic stages was compared, as well as their teeth morphology and ecomorphological attributes. Leporinus reticulatus presented omnivorous diet, with higher consumption of invertebrates by smaller specimens (younger ones), and gradual introduction of plant items in larger specimens... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical ichthyofauna; Freshwater fish; Trophic ecology; Ontogenetic morphological variation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000400383 |
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| Caetano, Dyego Leonardo Ferraz; Rosa, Rafael Rogério; Moraes, Verônica Rodrigues de; Jané, Daniela Ribas; Silva, Alexandre Fernandes Oliveira da. |
| The objective of this study was to evaluate the influence of a dam on the ecological parameters of the fish assemblages of a stream of second order of the upper Paraná River basin, southern Brazil. Samplings of abiotic data and ichthyofauna occurred quarterly between September 2012 and June 2013. Were collected 3,128 individuals in six orders, eight families and 13 species. The Cluster analysis (Jaccard) based on species composition indicated the separation of the sampling units into two groups, demonstrating the dissimilarity between upstream and downstream units. The artificial dam was characterized as a discontinuity factor for diversity patterns and ecological processes related to biota. Thus, this study has indications that the creation of dams can... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecologia 2.05.02.00-1 conservation unit; Geographical barrier; Influence of anthropogenic factors; Neotropical ichthyofauna; Stream ecology Ecologia. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31943 |
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| Casatti,Lilian; Brejão,Gabriel Lourenço; Carvalho,Fernando Rogério; Silva,Hugmar Pains da; Pérez-Mayorga,María Angélica; Manzotti,Angelo Rodrigo; Zeni,Jaquelini de Oliveira; Ramires,Bruno Martins Santos; Langeani,Francisco. |
| Abstract: The replacement of tropical forests to production systems is one of the leading causes of riverine ecosystem alterations. However, current assemblages’ composition may also result from the time since these transformations have begun. Therefore, the knowledge of diversified historical scenarios can facilitate the accomplishment of actions that involve the aquatic environments recovery. In this study, an inventory of stream fish was carried out in basins whose deforestation was intensified in the last 20 years, to compose a baseline for ecological and taxonomic studies. The habitat, physical and chemical variables, and the fish assemblages from 60 streams in the northwest region of the state of Mato Grosso, in the Aripuanã and Juruena river basins,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inventory; Neotropical ichthyofauna; Deforestation; Baseline; Characidae. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100309 |
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