Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean
Antarctic fish of the suborder Notothenioidei represent one of the most notable examples of adaptive radiation in the marine environment. The evolutionary relationships between and within the eight families of this suborder have been well established by numerous studies, whereas the microevolutionar...
Published in: | Molecular Phylogenetics and Evolution |
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ftunivpadovairis:oai:www.research.unipd.it:11577/2429230 2024-02-27T08:35:12+00:00 Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean PATARNELLO, TOMASO MARCATO, STEFANIA ZANE, LORENZO VAROTTO, VITTORIO BARGELLONI, LUCA Patarnello, Tomaso Marcato, Stefania Zane, Lorenzo Varotto, Vittorio Bargelloni, Luca 2003 STAMPA http://hdl.handle.net/11577/2429230 https://doi.org/10.1016/S1055-7903(03)00124-6 eng eng info:eu-repo/semantics/altIdentifier/pmid/12927128 info:eu-repo/semantics/altIdentifier/wos/WOS:000184974800004 volume:28 firstpage:420 lastpage:429 numberofpages:10 journal:MOLECULAR PHYLOGENETICS AND EVOLUTION http://hdl.handle.net/11577/2429230 doi:10.1016/S1055-7903(03)00124-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0344099464 info:eu-repo/semantics/article 2003 ftunivpadovairis https://doi.org/10.1016/S1055-7903(03)00124-6 2024-01-31T17:38:56Z Antarctic fish of the suborder Notothenioidei represent one of the most notable examples of adaptive radiation in the marine environment. The evolutionary relationships between and within the eight families of this suborder have been well established by numerous studies, whereas the microevolutionary processes of notothenioid species remain largely unexplored. In the present paper we investigated the evolutionary relationships between three closely related species of the genus Chionodraco (family Channichthyidae), namely Chionodraco hamatus, Chionodraco rastrospinosus, and Chionodraco myersi by analysing portions of the mitochondrial genome (D-loop and 16S rRNA). The taxonomic status of C. hamatus and C. rastrospinosus as separate species has been questioned because of the limited number of key morphological characters that distinguish these two taxa. Our results, based on the analysis of several specimens belonging to both morphological groups revealed a small genetic differentiation among haplotypes, however, a clear separation between the two nominal species emerged since all individuals of each of the two taxa clustered together in distinct monophyletic groups. C. myersi appeared more distantly related in the phylogenetic analysis. For one species, C. hamatus, sampling was carried out at three different geographic locations in the area of the Ross Sea and Weddell Sea. The results showed that the partition of the genetic variation within this species is not compatible with the hypothesis of panmixia as gene flow between populations was significantly reduced. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Southern Ocean Weddell Sea Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Ross Sea Southern Ocean Weddell Weddell Sea Molecular Phylogenetics and Evolution 28 3 420 429 |
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Open Polar |
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Padua Research Archive (IRIS - Università degli Studi di Padova) |
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ftunivpadovairis |
language |
English |
description |
Antarctic fish of the suborder Notothenioidei represent one of the most notable examples of adaptive radiation in the marine environment. The evolutionary relationships between and within the eight families of this suborder have been well established by numerous studies, whereas the microevolutionary processes of notothenioid species remain largely unexplored. In the present paper we investigated the evolutionary relationships between three closely related species of the genus Chionodraco (family Channichthyidae), namely Chionodraco hamatus, Chionodraco rastrospinosus, and Chionodraco myersi by analysing portions of the mitochondrial genome (D-loop and 16S rRNA). The taxonomic status of C. hamatus and C. rastrospinosus as separate species has been questioned because of the limited number of key morphological characters that distinguish these two taxa. Our results, based on the analysis of several specimens belonging to both morphological groups revealed a small genetic differentiation among haplotypes, however, a clear separation between the two nominal species emerged since all individuals of each of the two taxa clustered together in distinct monophyletic groups. C. myersi appeared more distantly related in the phylogenetic analysis. For one species, C. hamatus, sampling was carried out at three different geographic locations in the area of the Ross Sea and Weddell Sea. The results showed that the partition of the genetic variation within this species is not compatible with the hypothesis of panmixia as gene flow between populations was significantly reduced. |
author2 |
Patarnello, Tomaso Marcato, Stefania Zane, Lorenzo Varotto, Vittorio Bargelloni, Luca |
format |
Article in Journal/Newspaper |
author |
PATARNELLO, TOMASO MARCATO, STEFANIA ZANE, LORENZO VAROTTO, VITTORIO BARGELLONI, LUCA |
spellingShingle |
PATARNELLO, TOMASO MARCATO, STEFANIA ZANE, LORENZO VAROTTO, VITTORIO BARGELLONI, LUCA Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean |
author_facet |
PATARNELLO, TOMASO MARCATO, STEFANIA ZANE, LORENZO VAROTTO, VITTORIO BARGELLONI, LUCA |
author_sort |
PATARNELLO, TOMASO |
title |
Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean |
title_short |
Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean |
title_full |
Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean |
title_fullStr |
Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean |
title_full_unstemmed |
Phylogeography of the Chionodraco genus (Perciformes, Channichthydae) in the Southern Ocean |
title_sort |
phylogeography of the chionodraco genus (perciformes, channichthydae) in the southern ocean |
publishDate |
2003 |
url |
http://hdl.handle.net/11577/2429230 https://doi.org/10.1016/S1055-7903(03)00124-6 |
geographic |
Antarctic Ross Sea Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Ross Sea Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Ross Sea Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Ross Sea Southern Ocean Weddell Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/12927128 info:eu-repo/semantics/altIdentifier/wos/WOS:000184974800004 volume:28 firstpage:420 lastpage:429 numberofpages:10 journal:MOLECULAR PHYLOGENETICS AND EVOLUTION http://hdl.handle.net/11577/2429230 doi:10.1016/S1055-7903(03)00124-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0344099464 |
op_doi |
https://doi.org/10.1016/S1055-7903(03)00124-6 |
container_title |
Molecular Phylogenetics and Evolution |
container_volume |
28 |
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3 |
container_start_page |
420 |
op_container_end_page |
429 |
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1792041658444939264 |