Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade
The catfish family Heptapteridae (order Siluriformes) is endemic to the Neotropics and is one of the most common of the fish families in small bodies of water. Although over 200 species have been identified in this family, very few have been characterized cytogenetically. Here, we analyze the chromo...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2015-02-01
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| Series: | Comparative Cytogenetics |
| Online Access: | http://compcytogen.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=4685 |
| _version_ | 1828295371762171904 |
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| author | Daniel Kantek Wellington Adriano Moreira Peres Orlando Moreira-Filho |
| author_facet | Daniel Kantek Wellington Adriano Moreira Peres Orlando Moreira-Filho |
| author_sort | Daniel Kantek |
| collection | DOAJ |
| description | The catfish family Heptapteridae (order Siluriformes) is endemic to the Neotropics and is one of the most common of the fish families in small bodies of water. Although over 200 species have been identified in this family, very few have been characterized cytogenetically. Here, we analyze the chromosome genomes of four species of Heptapteridae: Cetopsorhamdia iheringi (Schubart & Gomes, 1959), 2n = 58, comprising 28 metacentric (m) + 26 submetacentric (sm) + 4 subtelomeric (st) chromosomes; Pimelodella vittata (Lütken, 1874), 2n = 46, comprising 16m + 22sm + 8st; Rhamdia prope quelen (Quoy & Gaimard, 1824), 2n = 58 comprising 26m + 16sm + 14st + 2 acrocentric; and Rhamdiopsis prope microcephala (Lütken, 1874), 2n = 56, comprising 12m + 30sm + 14st. The nucleolus organizer regions (NORs) were located in a single chromosome pair in all species. The two species that belonged to the subclade Nemuroglanis, C. iheringi and R. prope quelen, had a diploid chromosome number of 58 and an interstitial NOR adjacent to a C+ block located on one of the larger chromosome pairs in the complement. Our results from conventional cytogenetic techniques in combination with FISH using 18S and 5S rDNA probes corroborated the taxonomical hypothesis for the formation of the Nemuroglanis subclade. |
| first_indexed | 2024-04-13T11:54:03Z |
| format | Article |
| id | doaj.art-b0583a9d5ced4509a8d7b0c8551997ef |
| institution | Directory Open Access Journal |
| issn | 1993-0771 1993-078X |
| language | English |
| last_indexed | 2024-04-13T11:54:03Z |
| publishDate | 2015-02-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Comparative Cytogenetics |
| spelling | doaj.art-b0583a9d5ced4509a8d7b0c8551997ef2022-12-22T02:47:58ZengPensoft PublishersComparative Cytogenetics1993-07711993-078X2015-02-0191172910.3897/CompCytogen.v9i1.84884685Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subcladeDaniel KantekWellington Adriano Moreira PeresOrlando Moreira-FilhoThe catfish family Heptapteridae (order Siluriformes) is endemic to the Neotropics and is one of the most common of the fish families in small bodies of water. Although over 200 species have been identified in this family, very few have been characterized cytogenetically. Here, we analyze the chromosome genomes of four species of Heptapteridae: Cetopsorhamdia iheringi (Schubart & Gomes, 1959), 2n = 58, comprising 28 metacentric (m) + 26 submetacentric (sm) + 4 subtelomeric (st) chromosomes; Pimelodella vittata (Lütken, 1874), 2n = 46, comprising 16m + 22sm + 8st; Rhamdia prope quelen (Quoy & Gaimard, 1824), 2n = 58 comprising 26m + 16sm + 14st + 2 acrocentric; and Rhamdiopsis prope microcephala (Lütken, 1874), 2n = 56, comprising 12m + 30sm + 14st. The nucleolus organizer regions (NORs) were located in a single chromosome pair in all species. The two species that belonged to the subclade Nemuroglanis, C. iheringi and R. prope quelen, had a diploid chromosome number of 58 and an interstitial NOR adjacent to a C+ block located on one of the larger chromosome pairs in the complement. Our results from conventional cytogenetic techniques in combination with FISH using 18S and 5S rDNA probes corroborated the taxonomical hypothesis for the formation of the Nemuroglanis subclade.http://compcytogen.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=4685 |
| spellingShingle | Daniel Kantek Wellington Adriano Moreira Peres Orlando Moreira-Filho Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade Comparative Cytogenetics |
| title | Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade |
| title_full | Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade |
| title_fullStr | Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade |
| title_full_unstemmed | Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade |
| title_short | Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade |
| title_sort | cytogenetic study of heptapterids teleostei siluriformes with particular respect to the nemuroglanis subclade |
| url | http://compcytogen.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=4685 |
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