First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae)
The capelin, Mallotus villosus (Osmeriformes, Osmeridae), is an ecological and commercial key component of the sub–arctic ichthyofauna. Here, we provide the first cytogenetic information on the species based on both conventional karyotyping and chromosomal mapping of 45S and 5S ribosomal genes throu...
Main Authors: | , , , , , |
---|---|
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Sociedade Brasileira de Genética
2008
|
Subjects: | |
Online Access: | http://hdl.handle.net/11567/224524 |
id |
ftunivgenova:oai:iris.unige.it:11567/224524 |
---|---|
record_format |
openpolar |
spelling |
ftunivgenova:oai:iris.unige.it:11567/224524 2023-12-31T10:03:24+01:00 First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) GHIGLIOTTI, LAURA PISANO, EVA F. MAZZEI C. OZOUF COSTAZ J.S. CHRISTIANSEN S. E. FEVOLDEN Ghigliotti, Laura F., Mazzei C., OZOUF COSTAZ Christiansen, J. S. S. E., Fevolden Pisano, Eva 2008 STAMPA http://hdl.handle.net/11567/224524 eng eng Sociedade Brasileira de Genética country:BRA volume:31 firstpage:180 lastpage:187 numberofpages:8 journal:GENETICS AND MOLECULAR BIOLOGY http://hdl.handle.net/11567/224524 info:eu-repo/semantics/article 2008 ftunivgenova 2023-12-06T17:39:30Z The capelin, Mallotus villosus (Osmeriformes, Osmeridae), is an ecological and commercial key component of the sub–arctic ichthyofauna. Here, we provide the first cytogenetic information on the species based on both conventional karyotyping and chromosomal mapping of 45S and 5S ribosomal genes through fluorescence in situ hybridization (FISH). The capelin genome displayed a diploid number of 54 with the karyotypic formula 26m/sm+28st/a and a fundamental number (FN) = 80. Both classes of ribosomal genes appeared to be spread out to multiple chromosomal locations, i.e. the 45S and 5S rDNA clusters were detected on six and seven chromosome pairs, respectively. A linked chromosomal organization of the major and minor ribosomal genes classes has been visualized in most of the rDNAs chromosomal locations. A comparative analysis of the available cytogenetic data for the family Osmeridae reveals diploid numbers higher than 48 and high fundamental numbers. This suggests that a rearranged karyotype is a shared feature within this family. Article in Journal/Newspaper Arctic Università degli Studi di Genova: CINECA IRIS |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
description |
The capelin, Mallotus villosus (Osmeriformes, Osmeridae), is an ecological and commercial key component of the sub–arctic ichthyofauna. Here, we provide the first cytogenetic information on the species based on both conventional karyotyping and chromosomal mapping of 45S and 5S ribosomal genes through fluorescence in situ hybridization (FISH). The capelin genome displayed a diploid number of 54 with the karyotypic formula 26m/sm+28st/a and a fundamental number (FN) = 80. Both classes of ribosomal genes appeared to be spread out to multiple chromosomal locations, i.e. the 45S and 5S rDNA clusters were detected on six and seven chromosome pairs, respectively. A linked chromosomal organization of the major and minor ribosomal genes classes has been visualized in most of the rDNAs chromosomal locations. A comparative analysis of the available cytogenetic data for the family Osmeridae reveals diploid numbers higher than 48 and high fundamental numbers. This suggests that a rearranged karyotype is a shared feature within this family. |
author2 |
Ghigliotti, Laura F., Mazzei C., OZOUF COSTAZ Christiansen, J. S. S. E., Fevolden Pisano, Eva |
format |
Article in Journal/Newspaper |
author |
GHIGLIOTTI, LAURA PISANO, EVA F. MAZZEI C. OZOUF COSTAZ J.S. CHRISTIANSEN S. E. FEVOLDEN |
spellingShingle |
GHIGLIOTTI, LAURA PISANO, EVA F. MAZZEI C. OZOUF COSTAZ J.S. CHRISTIANSEN S. E. FEVOLDEN First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) |
author_facet |
GHIGLIOTTI, LAURA PISANO, EVA F. MAZZEI C. OZOUF COSTAZ J.S. CHRISTIANSEN S. E. FEVOLDEN |
author_sort |
GHIGLIOTTI, LAURA |
title |
First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) |
title_short |
First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) |
title_full |
First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) |
title_fullStr |
First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) |
title_full_unstemmed |
First cytogenetic characterization of the sub-arctic marine fish Mallotus villosus (Müller, 1776, Osmeriformes, Osmeridae) |
title_sort |
first cytogenetic characterization of the sub-arctic marine fish mallotus villosus (müller, 1776, osmeriformes, osmeridae) |
publisher |
Sociedade Brasileira de Genética |
publishDate |
2008 |
url |
http://hdl.handle.net/11567/224524 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
volume:31 firstpage:180 lastpage:187 numberofpages:8 journal:GENETICS AND MOLECULAR BIOLOGY http://hdl.handle.net/11567/224524 |
_version_ |
1786821333916581888 |