Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier)
The Falkland’s mullet, Eleginops maclovinus, is the only modern representative of the Sub-Antarctic family Eleginopidae, suborder Notothenioidei. Based on specimens from the Falkland Islands/Islas Malvinas, the Magellan Straits, and the southern coast of Chile, we have established the specific karyo...
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Springer Verlag
2008
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ftunivgenova:oai:iris.unige.it:11567/224523 2023-11-12T04:04:07+01:00 Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) F. MAZZEI J. P. COUTANCEAU HW DETRICH III V. PRIRODINA C. OZOUF COSTAZ GHIGLIOTTI, LAURA PISANO, EVA F., Mazzei Ghigliotti, Laura J. P., Coutanceau HW DETRICH, Iii V., Prirodina C., OZOUF COSTAZ Pisano, Eva 2008 STAMPA http://hdl.handle.net/11567/224523 eng eng Springer Verlag volume:31 firstpage:629 lastpage:634 numberofpages:6 journal:POLAR BIOLOGY http://hdl.handle.net/11567/224523 info:eu-repo/semantics/article 2008 ftunivgenova 2023-10-18T20:45:10Z The Falkland’s mullet, Eleginops maclovinus, is the only modern representative of the Sub-Antarctic family Eleginopidae, suborder Notothenioidei. Based on specimens from the Falkland Islands/Islas Malvinas, the Magellan Straits, and the southern coast of Chile, we have established the specific karyotype by conventional cytogenetic methods and have mapped the chromosomal loci of the ribosomal genes by fluorescence in situ hybridization (FISH). With respect to the basal notothenioid family Bovichtidae and to the hypothetical basal condition of the suborder (diploid number = 48, fundamental number = 48), E. maclovinus displays a slightly derived karyotype (diploid number = 48, fundamental number = 54). In contrast to the bovichtids, the 45S and 5S ribosomal DNAs are co-localized to a single chromosome pair. Condensation of the ribosomal genes to a single locus is likely to represent an intermediate stage in the evolution of notothenioid karyology. Features unique to E. maclovinus (e.g., morphology of its large, rDNA-bearing chromosome pair) probably result from divergence during the long evolutionary isolation of the family. Article in Journal/Newspaper Antarc* Antarctic Università degli Studi di Genova: CINECA IRIS Antarctic |
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Università degli Studi di Genova: CINECA IRIS |
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ftunivgenova |
language |
English |
description |
The Falkland’s mullet, Eleginops maclovinus, is the only modern representative of the Sub-Antarctic family Eleginopidae, suborder Notothenioidei. Based on specimens from the Falkland Islands/Islas Malvinas, the Magellan Straits, and the southern coast of Chile, we have established the specific karyotype by conventional cytogenetic methods and have mapped the chromosomal loci of the ribosomal genes by fluorescence in situ hybridization (FISH). With respect to the basal notothenioid family Bovichtidae and to the hypothetical basal condition of the suborder (diploid number = 48, fundamental number = 48), E. maclovinus displays a slightly derived karyotype (diploid number = 48, fundamental number = 54). In contrast to the bovichtids, the 45S and 5S ribosomal DNAs are co-localized to a single chromosome pair. Condensation of the ribosomal genes to a single locus is likely to represent an intermediate stage in the evolution of notothenioid karyology. Features unique to E. maclovinus (e.g., morphology of its large, rDNA-bearing chromosome pair) probably result from divergence during the long evolutionary isolation of the family. |
author2 |
F., Mazzei Ghigliotti, Laura J. P., Coutanceau HW DETRICH, Iii V., Prirodina C., OZOUF COSTAZ Pisano, Eva |
format |
Article in Journal/Newspaper |
author |
F. MAZZEI J. P. COUTANCEAU HW DETRICH III V. PRIRODINA C. OZOUF COSTAZ GHIGLIOTTI, LAURA PISANO, EVA |
spellingShingle |
F. MAZZEI J. P. COUTANCEAU HW DETRICH III V. PRIRODINA C. OZOUF COSTAZ GHIGLIOTTI, LAURA PISANO, EVA Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) |
author_facet |
F. MAZZEI J. P. COUTANCEAU HW DETRICH III V. PRIRODINA C. OZOUF COSTAZ GHIGLIOTTI, LAURA PISANO, EVA |
author_sort |
F. MAZZEI |
title |
Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) |
title_short |
Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) |
title_full |
Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) |
title_fullStr |
Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) |
title_full_unstemmed |
Chromosomal characteristics of the temperate notothenioid fish Eleginops maclovinus (Cuvier) |
title_sort |
chromosomal characteristics of the temperate notothenioid fish eleginops maclovinus (cuvier) |
publisher |
Springer Verlag |
publishDate |
2008 |
url |
http://hdl.handle.net/11567/224523 |
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Antarctic |
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Antarctic |
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Antarc* Antarctic |
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Antarc* Antarctic |
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volume:31 firstpage:629 lastpage:634 numberofpages:6 journal:POLAR BIOLOGY http://hdl.handle.net/11567/224523 |
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1782340581839601664 |