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| Makrakis,Sergio; Castro-Santos,Theodore; Makrakis,Maristela Cavicchioli; Wagner,Ricardo Luiz; Adames,Maurício Spagnolo. |
| Improperly installed or poorly maintained culverts can pose a serious threat to fish by disrupting their habitat and endangering spawning success. Road culverts that are not designed for fish passage frequently can become obstacles. This can be especially problematic for migratory species, but can lead to fragmentation of resident populations as well. This study evaluated 40 culverts of 29 sites within a 25-km radius from Toledo city, Paraná State, southern Brazil, with respect to their likely effects on movement of the local ichthyofauna. We collected data on the shape and length of culverts, culvert material, waterfall height, water column depth, slope, and estimated flow velocity. Culverts were categorized by level of barrier risk for upstream... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Barriers; Criteria for culverts; Road crossing; Stream. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400009 |
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| Taguti,Tatia Leika; Kipper,Darlon; Bialetzki,Andréa; Sanches,Paulo Vanderlei; Makrakis,Maristela Cavicchioli; Baumgartner,Gilmar; Fernandes,Rodrigo. |
| Este trabalho descreve o desenvolvimento inicial de Pyrrhulina australis Eigenmann & Kennedy, 1903, o único Lebiasinidae da planície alagável do Alto Rio Paraná. Para isso, foram analisados 80 indivíduos, sendo 60 larvas e 20 juvenis, coletados entre os anos de 1992 e 2005, em vários ambientes (rios, canais e lagoas). De cada exemplar, foram obtidos dados morfométricos e merísticos e, posteriormente, o padrão de crescimento entre as variáveis morfométricas foi analisado. As larvas apresentaram grande concentração de pigmentos na região superior do intestino, da cabeça e ao redor da boca. A notocorda foi caracterizada por possuir um prolongamento que, posteriormente, diferenciou-se em um raio da nadadeira caudal. A seqüência de formação das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Charutinho; Ontogenia; Larvas; Juvenis; Rio Paraná. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000400006 |
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| Baumgartner,Gilmar; Nakatani,Keshiyu; Gomes,Luiz Carlos; Bialetzki,Andréa; Sanches,Paulo Vanderlei; Makrakis,Maristela Cavicchioli. |
| The purpose of this study was to evaluate the role of abiotic factors on fish larvae occurrence. Samplings were carried out monthly at 12 stations (grouped in four areas) in the Amambaí, Ivaí and Paraná rivers and in the Itaipu Reservoir (upper Paraná River basin), from October 1994 to January 1995 (spawning season). Simultaneously, we obtained water temperature, pH, electrical conductivity, dissolved oxygen, water level, water velocity, and rainfall. Principal Component Analyses (PCA) and Detrended Correspondence Analyses (DCA) were applied to summarize abiotic and larvae density data, respectively. Amambaí River differed significantly from the other areas in relation to abiotic factors. Itaipu Reservoir differed significantly from the other areas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Larval ecology; Spatial distribution; Floodplain; Itaipu reservoir; Larval drift. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400002 |
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| Assumpção,Lucileine de; Makrakis,Maristela Cavicchioli; Makrakis,Sergio; Piana,Pitágoras Augusto; Silva,Patrícia Sarai da; Lima,Ariane Furtado de; Fernandez,Domingo Rodriguez. |
| This study characterized the morphological differences among migratory fish species from the Paraná River Basin. A total of 177 adult fish of Leporinus elongatus, Leporinus macrocephalus, Prochilodus lineatus, Salminus brasiliensis, Pimelodus maculatus, Pinirampus pirinampu, Pseudoplatystoma corruscans, Pterodoras granulosus, and Rhaphiodon vulpinus were sampled in the Canal da Piracema, a fish passage system at Itaipu Dam, Paraná River. The migratory species were analyzed through 22 morphometric measurements and fineness ratio to identify morphological patterns related to swimming performance. Four species groups were indicated by the Cluster analysis: I) R. vulpinus; II) P. corruscans; III) L. macrocephalus, L. elongatus, P. lineatus, P. maculatus, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morphology; Swimming performance; Fineness ratio; Migratory fish. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400003 |
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| Wagner,Ricardo Luiz; Makrakis,Sergio; Castro-Santos,Theodore; Makrakis,Maristela Cavicchioli; Dias,João Henrique Pinheiro; Belmont,René Fuster. |
| This paper presents results of a fishway evaluation performed at the Engenheiro Sérgio Motta Hydroelectric Power Plant (known as Porto Primavera) - CESP, Paraná River, Brazil. The evaluation was designed to quantify entry and passage proportions of 4 long-distance migratory fish species: Brycon orbignyanus (piracanjuba), Piaractus mesopotamicus (pacu), Prochilodus lineatus (curimba), and Rhinelepis aspera (cascudo-preto). Proportions finding and entering the fishway differed between species, ranged from 7.4 % (Prochilodus lineatus) to 55.4% (Piaractus mesopotamicus). Also, proportion passing was different between species, ranged from 31% (R. aspera) to 100% (Prochilodus lineatus). Fish that were marked and released within the fishway had greater failure... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attraction; Dams; Fish ladder; Fishway; Migration; Swimming performance. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400011 |
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| Assumpção,Lucileine de; Makrakis,Maristela Cavicchioli; Makrakis,Sergio; Wagner,Ricardo Luiz; Silva,Patrícia Sarai da; Lima,Ariane Furtado de; Kashiwaqui,Elaine Antoniassi Luiz. |
| This study investigated the external body morphology (based on morphometric data) and the swimming efficiency in fish passages (based on the ascent time in a fish ladder) of two Neotropical long-distance migratory species. The fish were collected in the fish ladder of the Porto Primavera Hydroelectric Power Plant (known as Engenheiro Sergio Motta), upper Paraná River, Brazil. The species differ in several morphometric ratios related to swimming performance. Prochilodus lineatus exhibited a higher muscle ratio and caudal fin length ratio. However, Leporinus elongatus showed higher values for the fineness ratio, a higher length from snout to pectoral fin base ratio, and a higher caudal peduncle depth factor. Although both species show good swimming... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fineness ratio; Fish swimming; Fishway; Morphology; Swimming performance. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400012 |
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| Makrakis,Sérgio; Makrakis,Maristela Cavicchioli; Wagner,Ricardo Luiz; Dias,João Henrique Pinheiro; Gomes,Luiz Carlos. |
| Utilization of the fish ladder installed at the Engenheiro Sergio Motta Dam (also known as Porto Primavera) on the Paraná River, Southern Brazil, by long-distance migrating potamodromous species (sampling Protocol I), and ascending and descending movements (Protocol II) were evaluated. Three pools along the fish ladder (designated as lower, middle, and upper) were sampled monthly between December, 2004 and March, 2005 to determine the abundance of species in the ladder. The ascending and descending movements of the species in the ladder were also analyzed in the same period. In the samples for both protocols, 37 species representing 17 families and 5 orders (Characiformes, Siluriformes, Perciformes, Gymnotiformes, and Myliobatiformes) were recorded.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Paraná River; Migratory fish; Transposition; Fish passage. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000200014 |
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