Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex

Haplosyllis is a worldwide distributed genus of marine annelids, commonly associated with other invertebrates. Its characteristic simple bidentate chaetae have often led to mistakes in estimating the real diversity of the genus. Currently, Haplosyllis includes 38 species, nearly half of which inhabi...

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Authors: Álvarez-Campos, Patricia, Lattig, Patricia, Turon, Marta, San Martín, Guillermo, Buckley, David, Britayev, Temir A., Martin, Daniel, Machordom, Annie
Format: article
Status:Published version
Publication Date:2025
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/410794
Online Access:http://hdl.handle.net/10261/410794
https://api.elsevier.com/content/abstract/scopus_id/105005776747
Access Level:Open access
Keyword:Intraspecific variability
Phylogeny
Pseudo-cryptic speciation
Speciationintegrative taxonomy
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dc.title.none.fl_str_mv Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
title Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
spellingShingle Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
Álvarez-Campos, Patricia
Intraspecific variability
Phylogeny
Pseudo-cryptic speciation
Speciationintegrative taxonomy
title_short Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
title_full Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
title_fullStr Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
title_full_unstemmed Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
title_sort Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species Complex
dc.creator.none.fl_str_mv Álvarez-Campos, Patricia
Lattig, Patricia
Turon, Marta
San Martín, Guillermo
Buckley, David
Britayev, Temir A.
Martin, Daniel
Machordom, Annie
author Álvarez-Campos, Patricia
author_facet Álvarez-Campos, Patricia
Lattig, Patricia
Turon, Marta
San Martín, Guillermo
Buckley, David
Britayev, Temir A.
Martin, Daniel
Machordom, Annie
author_role author
author2 Lattig, Patricia
Turon, Marta
San Martín, Guillermo
Buckley, David
Britayev, Temir A.
Martin, Daniel
Machordom, Annie
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Comunidad de Madrid
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Ministerio de Economía y Competitividad (España)
Generalitat de Catalunya
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Intraspecific variability
Phylogeny
Pseudo-cryptic speciation
Speciationintegrative taxonomy
topic Intraspecific variability
Phylogeny
Pseudo-cryptic speciation
Speciationintegrative taxonomy
description Haplosyllis is a worldwide distributed genus of marine annelids, commonly associated with other invertebrates. Its characteristic simple bidentate chaetae have often led to mistakes in estimating the real diversity of the genus. Currently, Haplosyllis includes 38 species, nearly half of which inhabit the Indo-West Pacific (IPW). Nevertheless, this number might be much higher given that some of the most common species in this area, such as H. djiboutiensis, have been proposed to constitute complexes of several species. To investigate the diversity and evolutionary history of Haplosyllis in the IWP, we examined the morphology of 158 specimens from this area. In addition, we inferred phylogenies through Maximum Likelihood and Bayesian analyses using a multilocus molecular dataset from all Haplosyllis specimens and related genera. Our results indicate that: (1) Haplosyllis, Haplosyllides, and Parahaplosyllis are non-sister clades, (2) Haplosyllis is a polyphyletic genus, as Branchiosyllis, Alcyonosyllis, and Megasyllis are nested within it, and (3) there are four main well-supported clades including species of Haplosyllis that can be considered as different genera. However, robust morphological synapomorphies were only found for two of them, which we are describing as Haplosyllis sensu stricto and Paralcyonosyllis gen. nov. In addition, our detailed morphological study of the H. djiboutiensis complex, combined with a coalescence-based species delimitation analysis, confirmed that it is a complex of both cryptic and pseudo-cryptic complexes, with at least three distinct lineages/species.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/410794
https://api.elsevier.com/content/abstract/scopus_id/105005776747
url http://hdl.handle.net/10261/410794
https://api.elsevier.com/content/abstract/scopus_id/105005776747
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118550RB-C22
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1111/zsc.12730
https://doi.org/10.1111/zsc.12730
Sí
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dc.publisher.none.fl_str_mv Royal Swedish Academy of Sciences
John Wiley & Sons
publisher.none.fl_str_mv Royal Swedish Academy of Sciences
John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Evolution of Haplosyllis (Syllidae, Annelida) With Emphasis on the Indo-Pacific Region and the djiboutiensis Species ComplexÁlvarez-Campos, PatriciaLattig, PatriciaTuron, MartaSan Martín, GuillermoBuckley, DavidBritayev, Temir A.Martin, DanielMachordom, AnnieIntraspecific variabilityPhylogenyPseudo-cryptic speciationSpeciationintegrative taxonomyHaplosyllis is a worldwide distributed genus of marine annelids, commonly associated with other invertebrates. Its characteristic simple bidentate chaetae have often led to mistakes in estimating the real diversity of the genus. Currently, Haplosyllis includes 38 species, nearly half of which inhabit the Indo-West Pacific (IPW). Nevertheless, this number might be much higher given that some of the most common species in this area, such as H. djiboutiensis, have been proposed to constitute complexes of several species. To investigate the diversity and evolutionary history of Haplosyllis in the IWP, we examined the morphology of 158 specimens from this area. In addition, we inferred phylogenies through Maximum Likelihood and Bayesian analyses using a multilocus molecular dataset from all Haplosyllis specimens and related genera. Our results indicate that: (1) Haplosyllis, Haplosyllides, and Parahaplosyllis are non-sister clades, (2) Haplosyllis is a polyphyletic genus, as Branchiosyllis, Alcyonosyllis, and Megasyllis are nested within it, and (3) there are four main well-supported clades including species of Haplosyllis that can be considered as different genera. However, robust morphological synapomorphies were only found for two of them, which we are describing as Haplosyllis sensu stricto and Paralcyonosyllis gen. nov. In addition, our detailed morphological study of the H. djiboutiensis complex, combined with a coalescence-based species delimitation analysis, confirmed that it is a complex of both cryptic and pseudo-cryptic complexes, with at least three distinct lineages/species.P.A.-C. was supported by the Madrid Government (Comunidad de Madrid, Spain) through the Multiannual Agreement with the Universidad Autónoma de Madrid to encourage youth research doctors under the V Regional Programme of Research and Technological Innovation (PRICIT) (SI1/PJI/2019-00532), as well as by MCIN/AEI/10.13039/501100011033 and the European Union “Next Generation EU”/PRTR (CNS2023-145193). P.L. was funded by a postdoctoral contract under the Junta para la Ampliación de Estudios (JAE-DOC) program of the Consejo Superior de Investigaciones Científicas (CSIC) at the Museo Nacional de Ciencias Naturales of Madrid (MNCN-CSIC). M.T. was supported by the MarGech project (PID2020-118550RB), funded by the Spanish Ministry of Science Innovation and Universities (MCIN/AEI/ 10.13039/501100011033). G.S.M. collected part of the samples under the project CGL2009-12292 BOS funded by the Spanish Ministry of Economy and Knowledge (MINECO). This paper is also a contribution of D.M. to the Consolidated Research Group on Marine Benthic Ecology of the Generalitat de Catalunya (Grant number: 2021SGR00405).Peer reviewedRoyal Swedish Academy of SciencesJohn Wiley & SonsComunidad de MadridAgencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas (España)Ministerio de Ciencia, Innovación y Universidades (España)Ministerio de Economía y Competitividad (España)Generalitat de CatalunyaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/410794https://api.elsevier.com/content/abstract/scopus_id/105005776747reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#SI1/PJI/2019-00532info:eu-repo/grantAgreement/AEI//CNS2023-145193info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118550RB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118550RB-C22The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1111/zsc.12730https://doi.org/10.1111/zsc.12730Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4107942026-05-22T06:33:51Z
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