Cryptic speciation in a model invertebrate chordate
We applied independent species concepts to clarify the phylogeographic structure of the ascidian Ciona intestinalis, a powerful model system in chordate biology and for comparative genomic studies. Intensive research with this marine invertebrate is based on the assumption that natural populations g...
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ftunivbari:oai:ricerca.uniba.it:11586/14367 2024-04-14T08:15:50+00:00 Cryptic speciation in a model invertebrate chordate CAPUTI L ANDREAKIS N CIRINO P VASSILLO M SORDINO P. MASTROTOTARO, FRANCESCO Caputi, L Andreakis, N Mastrototaro, Francesco Cirino, P Vassillo, M Sordino, P. 2007 http://hdl.handle.net/11586/14367 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000246935700051 volume:104 n. 22 firstpage:9364 lastpage:9369 numberofpages:6 journal:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://hdl.handle.net/11586/14367 10.1073pnas.0610158104 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34547152781 Ciona intestinali phylogenetic cryptic species info:eu-repo/semantics/article 2007 ftunivbari 2024-03-21T18:11:14Z We applied independent species concepts to clarify the phylogeographic structure of the ascidian Ciona intestinalis, a powerful model system in chordate biology and for comparative genomic studies. Intensive research with this marine invertebrate is based on the assumption that natural populations globally belong to a single species. Therefore, understanding the true taxonomic classification may have implications for experimental design and data management. Phylogenies inferred from mitochondrial and nuclear DNA markers accredit the existence of two cryptic species: C. intestinalis sp. A, genetically homogeneous, distributed in the Mediterranean, northeast Atlantic, and Pacific, and C. intestinalis sp. B, geographically structured and encountered in the North Atlantic. Species-level divergence is further entailed by crossbreeding estimates. C. intestinalis A and B from allopatric populations cross-fertilize, but hybrids remain infertile because of defective gametogenesis. Although anatomy illustrates an overall interspecific similarity lacking in diagnostic features, we provide consistent tools for in-field and in-laboratory species discrimination. Finding of two cryptic taxa in C. intestinalis raises interest in a new tunicate genome as a gateway to studies in speciation and ecological adaptation of chordates. Article in Journal/Newspaper North Atlantic Northeast Atlantic Università degli Studi di Bari Aldo Moro: CINECA IRIS Pacific |
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Open Polar |
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Università degli Studi di Bari Aldo Moro: CINECA IRIS |
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ftunivbari |
language |
English |
topic |
Ciona intestinali phylogenetic cryptic species |
spellingShingle |
Ciona intestinali phylogenetic cryptic species CAPUTI L ANDREAKIS N CIRINO P VASSILLO M SORDINO P. MASTROTOTARO, FRANCESCO Cryptic speciation in a model invertebrate chordate |
topic_facet |
Ciona intestinali phylogenetic cryptic species |
description |
We applied independent species concepts to clarify the phylogeographic structure of the ascidian Ciona intestinalis, a powerful model system in chordate biology and for comparative genomic studies. Intensive research with this marine invertebrate is based on the assumption that natural populations globally belong to a single species. Therefore, understanding the true taxonomic classification may have implications for experimental design and data management. Phylogenies inferred from mitochondrial and nuclear DNA markers accredit the existence of two cryptic species: C. intestinalis sp. A, genetically homogeneous, distributed in the Mediterranean, northeast Atlantic, and Pacific, and C. intestinalis sp. B, geographically structured and encountered in the North Atlantic. Species-level divergence is further entailed by crossbreeding estimates. C. intestinalis A and B from allopatric populations cross-fertilize, but hybrids remain infertile because of defective gametogenesis. Although anatomy illustrates an overall interspecific similarity lacking in diagnostic features, we provide consistent tools for in-field and in-laboratory species discrimination. Finding of two cryptic taxa in C. intestinalis raises interest in a new tunicate genome as a gateway to studies in speciation and ecological adaptation of chordates. |
author2 |
Caputi, L Andreakis, N Mastrototaro, Francesco Cirino, P Vassillo, M Sordino, P. |
format |
Article in Journal/Newspaper |
author |
CAPUTI L ANDREAKIS N CIRINO P VASSILLO M SORDINO P. MASTROTOTARO, FRANCESCO |
author_facet |
CAPUTI L ANDREAKIS N CIRINO P VASSILLO M SORDINO P. MASTROTOTARO, FRANCESCO |
author_sort |
CAPUTI L |
title |
Cryptic speciation in a model invertebrate chordate |
title_short |
Cryptic speciation in a model invertebrate chordate |
title_full |
Cryptic speciation in a model invertebrate chordate |
title_fullStr |
Cryptic speciation in a model invertebrate chordate |
title_full_unstemmed |
Cryptic speciation in a model invertebrate chordate |
title_sort |
cryptic speciation in a model invertebrate chordate |
publishDate |
2007 |
url |
http://hdl.handle.net/11586/14367 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000246935700051 volume:104 n. 22 firstpage:9364 lastpage:9369 numberofpages:6 journal:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://hdl.handle.net/11586/14367 10.1073pnas.0610158104 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34547152781 |
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1796314295121739776 |