Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians

One of the main pending, unsolved problems concerning the study of the pycnodont fishes is their phylogenetic relationships with other major actinopterygian groups. The Pycnodontiformes have often been proposed as the sister group of the Telostei or the Teleosteomorpha. The first extensive cladistic...

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Detalhes bibliográficos
Autor: Poyato Ariza, Francisco José
Formato: artículo
Fecha de publicación:2015
País:España
Recursos:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/676076
Acesso em linha:http://hdl.handle.net/10486/676076
https://dx.doi.org/10.13130/2039-4942/6521
Access Level:acceso abierto
Palavra-chave:Actinopterygii
Halecomorphi
Lepisosteiformes
Neopterygii
Biología y Biomedicina / Biología
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spelling Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygiansPoyato Ariza, Francisco JoséActinopterygiiHalecomorphiLepisosteiformesNeopterygiiBiología y Biomedicina / BiologíaOne of the main pending, unsolved problems concerning the study of the pycnodont fishes is their phylogenetic relationships with other major actinopterygian groups. The Pycnodontiformes have often been proposed as the sister group of the Telostei or the Teleosteomorpha. The first extensive cladistic analysis on pycnodont relationships is hereby attempted by coding Pycnodontiformes into a previously existing data matrix with major neopterygian groups: Lepisosteiformes, Semionotiformes, Macrosemiiformes, Halecomorphi, and Teleostei. This analysis has resulted on the Pycnodontiformes having an unexpected position as the most basal Neopterygii among the groups included. Therefore, pycnodonts are not the sister-group of teleosteans, and they are not holosteans either. The phylogenetic relationships and the definition of the Holostei and the Gynglimodi are not affected by the inclusion of the Pycnodontiformes, but the basal position of the latter among Neopterygii may affect the definition of this traditional major actinopterygian group. A collateral consequence of these results is that the Halecostomi can be re-defined as the clade formed by [Holostei + Teleostei]. The phylogenetic relationships of pycnodonts should, consequently, be solved among basal neopterygian groups, mostly from the Triassic, as well as relevant non-neopterygian actinopterygians in order to confirm the neopterygian affinities of the Pycnodontiformes and to verify the definition and diagnosis of the Neopterygii and the HalecostomiThis is a contribution to Research Project CGL2013-42643-P. Programa de Excelencia del Ministerio de Economía y Competitividad de EspañaUniversità degli Studi di MilanoDepartamento de BiologíaFacultad de Ciencias20152015-11-01research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/676076https://dx.doi.org/10.13130/2039-4942/6521reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6760762026-06-23T12:46:27Z
dc.title.none.fl_str_mv Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
title Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
spellingShingle Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
Poyato Ariza, Francisco José
Actinopterygii
Halecomorphi
Lepisosteiformes
Neopterygii
Biología y Biomedicina / Biología
title_short Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
title_full Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
title_fullStr Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
title_full_unstemmed Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
title_sort Studies on pycnodont fishes (I): Evaluation of their phylogenetic position among actinopterygians
dc.creator.none.fl_str_mv Poyato Ariza, Francisco José
author Poyato Ariza, Francisco José
author_facet Poyato Ariza, Francisco José
author_role author
dc.contributor.none.fl_str_mv Departamento de Biología
Facultad de Ciencias
dc.subject.none.fl_str_mv Actinopterygii
Halecomorphi
Lepisosteiformes
Neopterygii
Biología y Biomedicina / Biología
topic Actinopterygii
Halecomorphi
Lepisosteiformes
Neopterygii
Biología y Biomedicina / Biología
description One of the main pending, unsolved problems concerning the study of the pycnodont fishes is their phylogenetic relationships with other major actinopterygian groups. The Pycnodontiformes have often been proposed as the sister group of the Telostei or the Teleosteomorpha. The first extensive cladistic analysis on pycnodont relationships is hereby attempted by coding Pycnodontiformes into a previously existing data matrix with major neopterygian groups: Lepisosteiformes, Semionotiformes, Macrosemiiformes, Halecomorphi, and Teleostei. This analysis has resulted on the Pycnodontiformes having an unexpected position as the most basal Neopterygii among the groups included. Therefore, pycnodonts are not the sister-group of teleosteans, and they are not holosteans either. The phylogenetic relationships and the definition of the Holostei and the Gynglimodi are not affected by the inclusion of the Pycnodontiformes, but the basal position of the latter among Neopterygii may affect the definition of this traditional major actinopterygian group. A collateral consequence of these results is that the Halecostomi can be re-defined as the clade formed by [Holostei + Teleostei]. The phylogenetic relationships of pycnodonts should, consequently, be solved among basal neopterygian groups, mostly from the Triassic, as well as relevant non-neopterygian actinopterygians in order to confirm the neopterygian affinities of the Pycnodontiformes and to verify the definition and diagnosis of the Neopterygii and the Halecostomi
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-11-01
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/676076
https://dx.doi.org/10.13130/2039-4942/6521
url http://hdl.handle.net/10486/676076
https://dx.doi.org/10.13130/2039-4942/6521
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Università degli Studi di Milano
publisher.none.fl_str_mv Università degli Studi di Milano
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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