Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river
Hoplias malabaricus (trahyra) is a widespread fish species over the Neotropical region with diversified inter-populational karyotypes (cytotypes), which may correspond to a species complex. Despite the wide distribution in the South American basins, some authors have questioned its natural origin in...
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| Format: | Article |
| Language: | English |
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Instituto de Tecnologia do Paraná (Tecpar)
2006-03-01
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| Series: | Brazilian Archives of Biology and Technology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300015 |
| _version_ | 1811306823415758848 |
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| author | Marcelo Ricardo Vicari Rubens Pazza Roberto Ferreira Artoni Vladimir Pavan Margarido Luiz Antonio Carlos Bertollo |
| author_facet | Marcelo Ricardo Vicari Rubens Pazza Roberto Ferreira Artoni Vladimir Pavan Margarido Luiz Antonio Carlos Bertollo |
| author_sort | Marcelo Ricardo Vicari |
| collection | DOAJ |
| description | Hoplias malabaricus (trahyra) is a widespread fish species over the Neotropical region with diversified inter-populational karyotypes (cytotypes), which may correspond to a species complex. Despite the wide distribution in the South American basins, some authors have questioned its natural origin in the Iguaçu river, an important Brazilian river basin which is characterized by several endemic fish species. We have analyzed the karyotype of H. malabaricus from different collection sites of this river, by conventional and banding methods. Our results, in addition to our previous data concerning geographic distribution of the cytotypes, contribute to better understand the origin of H. malabaricus on the Iguaçu river, reinforcing the proposition that it is a natural fish species in this river basin.<br>Hoplias malabaricus (traíra) é uma espécie de peixe com ampla distribuição pela região Neotropical e alta diversidade cariotípica interpopulacional (citótipos), que podem corresponder a um complexo de espécies. Apesar da sua ampla distribuição pelas bacias hidrográficas da América do Sul, alguns autores têm questionado sua origem natural no rio Iguaçu, uma importante bacia hidrográfica brasileira que é caracterizada pela presença de várias espécies de peixes endêmicas. Assim, nós temos analisado o cariótipo de H. malabaricus de diferentes locais de coleta neste rio por métodos convencionais e bandamentos cromossômicos. Nossos resultados, em adição a dados prévios a respeito da distribuição geográfica dos citótipos contribuem para um melhor entendimento da origem de H. malabaricus no rio Iguaçu, reforçando a proposta que esta é uma espécie de peixe natural desta bacia hidrográfica. |
| first_indexed | 2024-04-13T08:52:40Z |
| format | Article |
| id | doaj.art-b6761a11f11a474da8f955c2dab96fe9 |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-04-13T08:52:40Z |
| publishDate | 2006-03-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-b6761a11f11a474da8f955c2dab96fe92022-12-22T02:53:26ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242006-03-0149229730310.1590/S1516-89132006000300015Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu riverMarcelo Ricardo VicariRubens PazzaRoberto Ferreira ArtoniVladimir Pavan MargaridoLuiz Antonio Carlos BertolloHoplias malabaricus (trahyra) is a widespread fish species over the Neotropical region with diversified inter-populational karyotypes (cytotypes), which may correspond to a species complex. Despite the wide distribution in the South American basins, some authors have questioned its natural origin in the Iguaçu river, an important Brazilian river basin which is characterized by several endemic fish species. We have analyzed the karyotype of H. malabaricus from different collection sites of this river, by conventional and banding methods. Our results, in addition to our previous data concerning geographic distribution of the cytotypes, contribute to better understand the origin of H. malabaricus on the Iguaçu river, reinforcing the proposition that it is a natural fish species in this river basin.<br>Hoplias malabaricus (traíra) é uma espécie de peixe com ampla distribuição pela região Neotropical e alta diversidade cariotípica interpopulacional (citótipos), que podem corresponder a um complexo de espécies. Apesar da sua ampla distribuição pelas bacias hidrográficas da América do Sul, alguns autores têm questionado sua origem natural no rio Iguaçu, uma importante bacia hidrográfica brasileira que é caracterizada pela presença de várias espécies de peixes endêmicas. Assim, nós temos analisado o cariótipo de H. malabaricus de diferentes locais de coleta neste rio por métodos convencionais e bandamentos cromossômicos. Nossos resultados, em adição a dados prévios a respeito da distribuição geográfica dos citótipos contribuem para um melhor entendimento da origem de H. malabaricus no rio Iguaçu, reforçando a proposta que esta é uma espécie de peixe natural desta bacia hidrográfica.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300015Chromosome evolutionkaryotypes distributionendemism |
| spellingShingle | Marcelo Ricardo Vicari Rubens Pazza Roberto Ferreira Artoni Vladimir Pavan Margarido Luiz Antonio Carlos Bertollo Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river Brazilian Archives of Biology and Technology Chromosome evolution karyotypes distribution endemism |
| title | Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river |
| title_full | Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river |
| title_fullStr | Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river |
| title_full_unstemmed | Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river |
| title_short | Cytogenetics and biogeography: considerations about the natural origin of Hoplias malabaricus (Characiformes, Erythrinidae) on the Iguaçu river |
| title_sort | cytogenetics and biogeography considerations about the natural origin of hoplias malabaricus characiformes erythrinidae on the iguacu river |
| topic | Chromosome evolution karyotypes distribution endemism |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300015 |
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