Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide
The Strait of Gibraltar has been proposed to be the divide between two marine biogeographical regions, the Mediterranean Sea and the Northeast Atlantic. Intraspecific studies have shown, for several of the examined species, a reduction of gene flow between the two basins. The present study examines...
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ftunivpadovairis:oai:www.research.unipd.it:11577/2461820 2024-02-27T08:43:45+00:00 Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide BARGELLONI, LUCA PATARNELLO, TOMASO ALARCON JA ALVAREZ MC PENZO E MAGOULAS A REIS C Bargelloni, Luca Alarcon, Ja Alvarez, Mc Penzo, E Magoulas, A Reis, C Patarnello, Tomaso 2003 http://hdl.handle.net/11577/2461820 https://doi.org/10.1046/j.1420-9101.2003.00620.x unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000185988000009 volume:16 firstpage:1149 lastpage:1158 journal:JOURNAL OF EVOLUTIONARY BIOLOGY http://hdl.handle.net/11577/2461820 doi:10.1046/j.1420-9101.2003.00620.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0242459228 info:eu-repo/semantics/article 2003 ftunivpadovairis https://doi.org/10.1046/j.1420-9101.2003.00620.x 2024-01-31T17:40:45Z The Strait of Gibraltar has been proposed to be the divide between two marine biogeographical regions, the Mediterranean Sea and the Northeast Atlantic. Intraspecific studies have shown, for several of the examined species, a reduction of gene flow between the two basins. The present study examines genetic variation at nuclear and mitochondrial loci in five marine teleost species belonging to the family Sparidae. Four samples for each species were analysed spanning the Northeast Atlantic and the Mediterranean. For all individuals 17 allozyme loci were scored and a combined single strand conformation polymorphism-sequencing approach was used to survey approximately 190 bp of the mitochondrial DNA (mtDNA) D-loop region. All five species share similar biological features. For three species, namely Lithognathus mormyrus, Spondyliosoma cantharus, and Dentex dentex, large mtDNA divergence was observed between Atlantic and Mediterranean samples. Little or no mtDNA differentiation was found in the other two species, Pagrus pagrus and Pagellus bogaraveo. Allozyme data revealed strong differentiation when comparing Atlantic and Mediterranean samples of L. mormyrus and D. dentex, moderate for P. pagrus, and no differentiation for P. bogaraveo and S. cantharus. These results provide evidence for a sharp phylogeographical break (sensu Avise) between the Atlantic and the Mediterranean for two (or possibly three) sparid species of the five investigated. At the same time, the obtained results for the other two species raise the question on which ecological/historical factors might have caused the observed discrepancy in the geographical distribution of genetic variation among otherwise biologically similar species. Article in Journal/Newspaper Northeast Atlantic Padua Research Archive (IRIS - Università degli Studi di Padova) Journal of Evolutionary Biology 16 6 1149 1158 |
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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 |
unknown |
description |
The Strait of Gibraltar has been proposed to be the divide between two marine biogeographical regions, the Mediterranean Sea and the Northeast Atlantic. Intraspecific studies have shown, for several of the examined species, a reduction of gene flow between the two basins. The present study examines genetic variation at nuclear and mitochondrial loci in five marine teleost species belonging to the family Sparidae. Four samples for each species were analysed spanning the Northeast Atlantic and the Mediterranean. For all individuals 17 allozyme loci were scored and a combined single strand conformation polymorphism-sequencing approach was used to survey approximately 190 bp of the mitochondrial DNA (mtDNA) D-loop region. All five species share similar biological features. For three species, namely Lithognathus mormyrus, Spondyliosoma cantharus, and Dentex dentex, large mtDNA divergence was observed between Atlantic and Mediterranean samples. Little or no mtDNA differentiation was found in the other two species, Pagrus pagrus and Pagellus bogaraveo. Allozyme data revealed strong differentiation when comparing Atlantic and Mediterranean samples of L. mormyrus and D. dentex, moderate for P. pagrus, and no differentiation for P. bogaraveo and S. cantharus. These results provide evidence for a sharp phylogeographical break (sensu Avise) between the Atlantic and the Mediterranean for two (or possibly three) sparid species of the five investigated. At the same time, the obtained results for the other two species raise the question on which ecological/historical factors might have caused the observed discrepancy in the geographical distribution of genetic variation among otherwise biologically similar species. |
author2 |
Bargelloni, Luca Alarcon, Ja Alvarez, Mc Penzo, E Magoulas, A Reis, C Patarnello, Tomaso |
format |
Article in Journal/Newspaper |
author |
BARGELLONI, LUCA PATARNELLO, TOMASO ALARCON JA ALVAREZ MC PENZO E MAGOULAS A REIS C |
spellingShingle |
BARGELLONI, LUCA PATARNELLO, TOMASO ALARCON JA ALVAREZ MC PENZO E MAGOULAS A REIS C Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide |
author_facet |
BARGELLONI, LUCA PATARNELLO, TOMASO ALARCON JA ALVAREZ MC PENZO E MAGOULAS A REIS C |
author_sort |
BARGELLONI, LUCA |
title |
Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide |
title_short |
Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide |
title_full |
Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide |
title_fullStr |
Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide |
title_full_unstemmed |
Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic-Mediterranean divide |
title_sort |
discord in the family sparidae (teleostei): divergent phylogeographical patterns across the atlantic-mediterranean divide |
publishDate |
2003 |
url |
http://hdl.handle.net/11577/2461820 https://doi.org/10.1046/j.1420-9101.2003.00620.x |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000185988000009 volume:16 firstpage:1149 lastpage:1158 journal:JOURNAL OF EVOLUTIONARY BIOLOGY http://hdl.handle.net/11577/2461820 doi:10.1046/j.1420-9101.2003.00620.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0242459228 |
op_doi |
https://doi.org/10.1046/j.1420-9101.2003.00620.x |
container_title |
Journal of Evolutionary Biology |
container_volume |
16 |
container_issue |
6 |
container_start_page |
1149 |
op_container_end_page |
1158 |
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