Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin
Cytogenetic studies were carried out on samples of Parapteronotus hasemani, Sternarchogiton preto and Sternarchorhamphus muelleri (Apteronotidae, Gymnotiformes) from the Amazon basin. The first two species exhibited both a 2n = 52 karyotype, but differed in their karyotypic formulae, distribution of...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2014-11-01
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| Series: | Genetics and Molecular Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000500006&tlng=en |
| _version_ | 1798026322075713536 |
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| author | Fernando Henrique Ramos Silva Julio Cesar Pieczarka Adauto Lima Cardoso Patrícia Corrêa da Silva Jonas Alves de Oliveira Cleusa Yoshiko Nagamachi |
| author_facet | Fernando Henrique Ramos Silva Julio Cesar Pieczarka Adauto Lima Cardoso Patrícia Corrêa da Silva Jonas Alves de Oliveira Cleusa Yoshiko Nagamachi |
| author_sort | Fernando Henrique Ramos Silva |
| collection | DOAJ |
| description | Cytogenetic studies were carried out on samples of Parapteronotus hasemani, Sternarchogiton preto and Sternarchorhamphus muelleri (Apteronotidae, Gymnotiformes) from the Amazon basin. The first two species exhibited both a 2n = 52 karyotype, but differed in their karyotypic formulae, distribution of constitutive heterochromatin, and chromosomal location of the NOR. The third species, Sternarchorhamphus muelleri, was found to have a 2n = 32 karyotype. In all three species the DAPI and chromomycin A3 staining results were consistent with the C-banding results and nucleolar organizer region (NOR) localization. The 18S rDNA probe confirmed that there was only one pair of ribosomal DNA cistron bearers per species. The telomeric probe did not reveal interstitial telomeric sequences (ITS). The karyotypic differences among these species can be used for taxonomic identification. These data will be useful in future studies of these fishes and help understanding the phylogenetic relationships and chromosomal evolution of the Apteronotidae. |
| first_indexed | 2024-04-11T18:33:28Z |
| format | Article |
| id | doaj.art-b9537fdc30b147c2b4751b4682c5f279 |
| institution | Directory Open Access Journal |
| issn | 1678-4685 |
| language | English |
| last_indexed | 2024-04-11T18:33:28Z |
| publishDate | 2014-11-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-b9537fdc30b147c2b4751b4682c5f2792022-12-22T04:09:21ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1678-46852014-11-0137463864510.1590/S1415-47572014005000018Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon BasinFernando Henrique Ramos Silva0Julio Cesar Pieczarka1Adauto Lima Cardoso2Patrícia Corrêa da Silva3Jonas Alves de Oliveira4Cleusa Yoshiko Nagamachi5Universidade Federal do ParáUniversidade Federal do ParáUniversidade Federal do ParáUniversidade Federal do ParáInstituto de Desenvolvimento Sustentável MamirauáUniversidade Federal do ParáCytogenetic studies were carried out on samples of Parapteronotus hasemani, Sternarchogiton preto and Sternarchorhamphus muelleri (Apteronotidae, Gymnotiformes) from the Amazon basin. The first two species exhibited both a 2n = 52 karyotype, but differed in their karyotypic formulae, distribution of constitutive heterochromatin, and chromosomal location of the NOR. The third species, Sternarchorhamphus muelleri, was found to have a 2n = 32 karyotype. In all three species the DAPI and chromomycin A3 staining results were consistent with the C-banding results and nucleolar organizer region (NOR) localization. The 18S rDNA probe confirmed that there was only one pair of ribosomal DNA cistron bearers per species. The telomeric probe did not reveal interstitial telomeric sequences (ITS). The karyotypic differences among these species can be used for taxonomic identification. These data will be useful in future studies of these fishes and help understanding the phylogenetic relationships and chromosomal evolution of the Apteronotidae.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000500006&tlng=enfluorochromesFISHchromosomal rearrangementsbiodiversity |
| spellingShingle | Fernando Henrique Ramos Silva Julio Cesar Pieczarka Adauto Lima Cardoso Patrícia Corrêa da Silva Jonas Alves de Oliveira Cleusa Yoshiko Nagamachi Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin Genetics and Molecular Biology fluorochromes FISH chromosomal rearrangements biodiversity |
| title | Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin |
| title_full | Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin |
| title_fullStr | Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin |
| title_full_unstemmed | Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin |
| title_short | Chromosomal diversity in three species of electric fish (Apteronotidae, Gymnotiformes) from the Amazon Basin |
| title_sort | chromosomal diversity in three species of electric fish apteronotidae gymnotiformes from the amazon basin |
| topic | fluorochromes FISH chromosomal rearrangements biodiversity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000500006&tlng=en |
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