Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida

Eunapius is one of the most diverse genera in Spongillida with 17 species currently accepted. So far, only two records of this genus are known from Mexico: Eunapius fragilis from Xochimilco cited as Spongilla fragilis (by Rioja) and Spongilla fragilis var. zempoalensis from Zempoala lagoon (by Rioja...

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Autores: Carballo Cenizo, Juan José Luis, Gómez, P., Cruz-Barraza, J. A., Yáñez, B.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2025
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:dnet:idus________::6a4df89d87fdfb6b9a8a98f2b120e11e
Acceso en línea:https://hdl.handle.net/11441/186133
https://doi.org/10.1080/14772000.2025.2491350
Access Level:acceso abierto
Palabra clave:Freshwater sponges
Mexico
Eunapius
ITS
Polyphyly
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spelling Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of SpongillidaCarballo Cenizo, Juan José LuisGómez, P.Cruz-Barraza, J. A.Yáñez, B.Freshwater spongesMexicoEunapiusITSPolyphylyEunapius is one of the most diverse genera in Spongillida with 17 species currently accepted. So far, only two records of this genus are known from Mexico: Eunapius fragilis from Xochimilco cited as Spongilla fragilis (by Rioja) and Spongilla fragilis var. zempoalensis from Zempoala lagoon (by Rioja). We revised Rioja’s original material, and new material from Zempoala lakes and considered that these records must be proposed as new species: Spongilla fragilis from Xochimilco is described as Eunapius xochimilca new sp., and Spongilla fragilis var zempoalensis is described as E. zempoalensis new comb. In addition, we described two new species, E. gamundii and E. acanthostrongylae new spp. The main morphological characteristics that define these new species focus on the oxeas and gemmuloscleres morphology and size, as well as the shape and size of the gemmules. Their morphological differences are also supported by nuclear-ribosomal molecular markers, specifically the ITS region (ITS1-5.8S-ITS2), which were used to assess the phylogenetic relationships of the genus Eunapius. Tree topology showed genus Eunapius in a monophyletic clade composed of three main groups, which were clustered together with other genera of the family Spongillidae. Our results also support the previous molecular hypothesis, which suggests the polyphyly of Spongillidae and the need to reevaluate the taxonomy at the family level.Taylor & FrancisZoologíaPrograma de Apoyo a Proyectos de Investigación e Innovación Tecnológica (DGAPA)2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/186133https://doi.org/10.1080/14772000.2025.2491350reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésSystematics and Biodiversity, 23 (1), 2491350. IN200716https://doi.org/10.1080/14772000.2025.2491350info:eu-repo/semantics/openAccessoai:dnet:idus________::6a4df89d87fdfb6b9a8a98f2b120e11e2026-06-17T12:51:07Z
dc.title.none.fl_str_mv Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
title Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
spellingShingle Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
Carballo Cenizo, Juan José Luis
Freshwater sponges
Mexico
Eunapius
ITS
Polyphyly
title_short Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
title_full Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
title_fullStr Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
title_full_unstemmed Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
title_sort Taxonomy and molecular systematic position of the freshwater genus Eunapius with the descriptions of new species: more evidence in favour of the polyphyly of Spongillida
dc.creator.none.fl_str_mv Carballo Cenizo, Juan José Luis
Gómez, P.
Cruz-Barraza, J. A.
Yáñez, B.
author Carballo Cenizo, Juan José Luis
author_facet Carballo Cenizo, Juan José Luis
Gómez, P.
Cruz-Barraza, J. A.
Yáñez, B.
author_role author
author2 Gómez, P.
Cruz-Barraza, J. A.
Yáñez, B.
author2_role author
author
author
dc.contributor.none.fl_str_mv Zoología
Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica (DGAPA)
dc.subject.none.fl_str_mv Freshwater sponges
Mexico
Eunapius
ITS
Polyphyly
topic Freshwater sponges
Mexico
Eunapius
ITS
Polyphyly
description Eunapius is one of the most diverse genera in Spongillida with 17 species currently accepted. So far, only two records of this genus are known from Mexico: Eunapius fragilis from Xochimilco cited as Spongilla fragilis (by Rioja) and Spongilla fragilis var. zempoalensis from Zempoala lagoon (by Rioja). We revised Rioja’s original material, and new material from Zempoala lakes and considered that these records must be proposed as new species: Spongilla fragilis from Xochimilco is described as Eunapius xochimilca new sp., and Spongilla fragilis var zempoalensis is described as E. zempoalensis new comb. In addition, we described two new species, E. gamundii and E. acanthostrongylae new spp. The main morphological characteristics that define these new species focus on the oxeas and gemmuloscleres morphology and size, as well as the shape and size of the gemmules. Their morphological differences are also supported by nuclear-ribosomal molecular markers, specifically the ITS region (ITS1-5.8S-ITS2), which were used to assess the phylogenetic relationships of the genus Eunapius. Tree topology showed genus Eunapius in a monophyletic clade composed of three main groups, which were clustered together with other genera of the family Spongillidae. Our results also support the previous molecular hypothesis, which suggests the polyphyly of Spongillidae and the need to reevaluate the taxonomy at the family level.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/186133
https://doi.org/10.1080/14772000.2025.2491350
url https://hdl.handle.net/11441/186133
https://doi.org/10.1080/14772000.2025.2491350
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Systematics and Biodiversity, 23 (1), 2491350.
IN200716
https://doi.org/10.1080/14772000.2025.2491350
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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