Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia
A karyotype analysis of the electric eel, Electrophorus electricus (Teleostei, Gymnotiformes), a strongly electric fish from northern South America, is presented. Two female specimens were analyzed, one from the Amazon River and one from the Araguaia River. The specimens had a chromosomal number of...
| मुख्य लेखकों: | , , , , , , , , |
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| स्वरूप: | लेख |
| भाषा: | English |
| प्रकाशित: |
Sociedade Brasileira de Genética
2008-01-01
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| श्रृंखला: | Genetics and Molecular Biology |
| विषय: | |
| ऑनलाइन पहुंच: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200010 |
| _version_ | 1829491052281593856 |
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| author | Soraia B.A. Fonteles Carlos E. Lopes Alberto Akama Flora M.C. Fernandes Fábio Porto-Foresti José A. Senhorini Maria de Fátima Z. Daniel-Silva Fausto Foresti Lurdes Foresti de Almeida-Toledo |
| author_facet | Soraia B.A. Fonteles Carlos E. Lopes Alberto Akama Flora M.C. Fernandes Fábio Porto-Foresti José A. Senhorini Maria de Fátima Z. Daniel-Silva Fausto Foresti Lurdes Foresti de Almeida-Toledo |
| author_sort | Soraia B.A. Fonteles |
| collection | DOAJ |
| description | A karyotype analysis of the electric eel, Electrophorus electricus (Teleostei, Gymnotiformes), a strongly electric fish from northern South America, is presented. Two female specimens were analyzed, one from the Amazon River and one from the Araguaia River. The specimens had a chromosomal number of 2n = 52 (42M-SM + 10A). C-bands were present in a centromeric and pericentromeric position on part of the chromosomes; some interstitial C-bands were also present. Heteromorphic nucleolus organizer regions (NORs) were detected in two chromosome pairs of the specimen from the Amazon River. The chromosome number and karyotype characteristics are similar to those of other Gymnotidae species. The genera Electrophorus and Gymnotus are positioned as the basal lineages in the Gymnotiformes phylogeny. |
| first_indexed | 2024-12-15T00:31:54Z |
| format | Article |
| id | doaj.art-1b513095de694344a1a73f7086f14ff8 |
| institution | Directory Open Access Journal |
| issn | 1415-4757 1678-4685 |
| language | English |
| last_indexed | 2024-12-15T00:31:54Z |
| publishDate | 2008-01-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-1b513095de694344a1a73f7086f14ff82022-12-21T22:41:57ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852008-01-0131122723010.1590/S1415-47572008000200010Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and AraguaiaSoraia B.A. FontelesCarlos E. LopesAlberto AkamaFlora M.C. FernandesFábio Porto-ForestiJosé A. SenhoriniMaria de Fátima Z. Daniel-SilvaFausto ForestiLurdes Foresti de Almeida-ToledoA karyotype analysis of the electric eel, Electrophorus electricus (Teleostei, Gymnotiformes), a strongly electric fish from northern South America, is presented. Two female specimens were analyzed, one from the Amazon River and one from the Araguaia River. The specimens had a chromosomal number of 2n = 52 (42M-SM + 10A). C-bands were present in a centromeric and pericentromeric position on part of the chromosomes; some interstitial C-bands were also present. Heteromorphic nucleolus organizer regions (NORs) were detected in two chromosome pairs of the specimen from the Amazon River. The chromosome number and karyotype characteristics are similar to those of other Gymnotidae species. The genera Electrophorus and Gymnotus are positioned as the basal lineages in the Gymnotiformes phylogeny.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200010chromosomefishGymnotidaeelectric eel |
| spellingShingle | Soraia B.A. Fonteles Carlos E. Lopes Alberto Akama Flora M.C. Fernandes Fábio Porto-Foresti José A. Senhorini Maria de Fátima Z. Daniel-Silva Fausto Foresti Lurdes Foresti de Almeida-Toledo Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia Genetics and Molecular Biology chromosome fish Gymnotidae electric eel |
| title | Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia |
| title_full | Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia |
| title_fullStr | Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia |
| title_full_unstemmed | Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia |
| title_short | Cytogenetic characterization of the strongly electric Amazonian eel, Electrophorus electricus (Teleostei, Gymnotiformes), from the Brazilian rivers Amazon and Araguaia |
| title_sort | cytogenetic characterization of the strongly electric amazonian eel electrophorus electricus teleostei gymnotiformes from the brazilian rivers amazon and araguaia |
| topic | chromosome fish Gymnotidae electric eel |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200010 |
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