Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species

Autores
Achatz, Tyler J.; Morton, Lauren B.; Orlofske, Sarah A.; Brant, Sara V.; Montes, Martín Miguel; Bondone, Federico; Tkach, Vasyl V.
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Psilochasmus Lühe, 1909 is a small genus of psilostomid digeneans parasitic in birds and characterized by the presence of a retractable tail-like structure at the posterior end of the body. Despite its low diversity, the taxonomic history of the genus is tumultuous, with opinions varying from recognizing only a single species to 11 nominal species. In this study, newly generated and previously available sequences of nuclear ribosomal DNA operon (ITS1+5.8S+ITS2; 28S) and partial NADH dehydrogenase (nad1) mtDNA gene sequences of Psilochasmus spp. from Europe (Palearctic), North America (Nearctic) and South America (Neotropics) were used to assess the diversity of Psilochasmus spp. and explore the phylogenetic interrelationships among members of genus and to distinguish between species. Based on combined morphological and molecular data, descriptions of two new Psilochasmus species from Europe and North America, Psilochasmus slavaukrainii sp. nov. and Psilochasmus urbeni sp. nov., are provided, as well as the first morphological description of P. oxyurus specimens linked to DNA sequence data. In addition, a key to the identification of Psilochasmus spp. recognized as a result of this study has been constructed.
Centro de Estudios Parasitológicos y de Vectores
Materia
Biología
Molecular phylogeny
Psilochasmus oxyurus
Psilochasmus slavaukrainii sp. nov.
Psilochasmus urbeni sp. nov.
Psilostomidae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/189491
Acceder
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its speciesAchatz, Tyler J.Morton, Lauren B.Orlofske, Sarah A.Brant, Sara V.Montes, Martín MiguelBondone, FedericoTkach, Vasyl V.BiologíaMolecular phylogenyPsilochasmus oxyurusPsilochasmus slavaukrainii sp. nov.Psilochasmus urbeni sp. nov.PsilostomidaePsilochasmus Lühe, 1909 is a small genus of psilostomid digeneans parasitic in birds and characterized by the presence of a retractable tail-like structure at the posterior end of the body. Despite its low diversity, the taxonomic history of the genus is tumultuous, with opinions varying from recognizing only a single species to 11 nominal species. In this study, newly generated and previously available sequences of nuclear ribosomal DNA operon (ITS1+5.8S+ITS2; 28S) and partial NADH dehydrogenase (nad1) mtDNA gene sequences of Psilochasmus spp. from Europe (Palearctic), North America (Nearctic) and South America (Neotropics) were used to assess the diversity of Psilochasmus spp. and explore the phylogenetic interrelationships among members of genus and to distinguish between species. Based on combined morphological and molecular data, descriptions of two new Psilochasmus species from Europe and North America, Psilochasmus slavaukrainii sp. nov. and Psilochasmus urbeni sp. nov., are provided, as well as the first morphological description of P. oxyurus specimens linked to DNA sequence data. In addition, a key to the identification of Psilochasmus spp. recognized as a result of this study has been constructed.Centro de Estudios Parasitológicos y de Vectores2025-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/189491enginfo:eu-repo/semantics/altIdentifier/issn/1313-2970info:eu-repo/semantics/altIdentifier/doi/10.3897/zookeys.1254.162728info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-02-12T16:37:50Zoai:sedici.unlp.edu.ar:10915/189491Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-02-12 16:37:51.006SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
title Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
spellingShingle Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
Achatz, Tyler J.
Biología
Molecular phylogeny
Psilochasmus oxyurus
Psilochasmus slavaukrainii sp. nov.
Psilochasmus urbeni sp. nov.
Psilostomidae
title_short Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
title_full Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
title_fullStr Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
title_full_unstemmed Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
title_sort Description of two new species of Psilochasmus Lühe, 1909 (Digenea, Psilostomidae), with remarks on the diversity of the genus and a key to its species
dc.creator.none.fl_str_mv Achatz, Tyler J.
Morton, Lauren B.
Orlofske, Sarah A.
Brant, Sara V.
Montes, Martín Miguel
Bondone, Federico
Tkach, Vasyl V.
author Achatz, Tyler J.
author_facet Achatz, Tyler J.
Morton, Lauren B.
Orlofske, Sarah A.
Brant, Sara V.
Montes, Martín Miguel
Bondone, Federico
Tkach, Vasyl V.
author_role author
author2 Morton, Lauren B.
Orlofske, Sarah A.
Brant, Sara V.
Montes, Martín Miguel
Bondone, Federico
Tkach, Vasyl V.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Biología
Molecular phylogeny
Psilochasmus oxyurus
Psilochasmus slavaukrainii sp. nov.
Psilochasmus urbeni sp. nov.
Psilostomidae
topic Biología
Molecular phylogeny
Psilochasmus oxyurus
Psilochasmus slavaukrainii sp. nov.
Psilochasmus urbeni sp. nov.
Psilostomidae
dc.description.none.fl_txt_mv Psilochasmus Lühe, 1909 is a small genus of psilostomid digeneans parasitic in birds and characterized by the presence of a retractable tail-like structure at the posterior end of the body. Despite its low diversity, the taxonomic history of the genus is tumultuous, with opinions varying from recognizing only a single species to 11 nominal species. In this study, newly generated and previously available sequences of nuclear ribosomal DNA operon (ITS1+5.8S+ITS2; 28S) and partial NADH dehydrogenase (nad1) mtDNA gene sequences of Psilochasmus spp. from Europe (Palearctic), North America (Nearctic) and South America (Neotropics) were used to assess the diversity of Psilochasmus spp. and explore the phylogenetic interrelationships among members of genus and to distinguish between species. Based on combined morphological and molecular data, descriptions of two new Psilochasmus species from Europe and North America, Psilochasmus slavaukrainii sp. nov. and Psilochasmus urbeni sp. nov., are provided, as well as the first morphological description of P. oxyurus specimens linked to DNA sequence data. In addition, a key to the identification of Psilochasmus spp. recognized as a result of this study has been constructed.
Centro de Estudios Parasitológicos y de Vectores
description Psilochasmus Lühe, 1909 is a small genus of psilostomid digeneans parasitic in birds and characterized by the presence of a retractable tail-like structure at the posterior end of the body. Despite its low diversity, the taxonomic history of the genus is tumultuous, with opinions varying from recognizing only a single species to 11 nominal species. In this study, newly generated and previously available sequences of nuclear ribosomal DNA operon (ITS1+5.8S+ITS2; 28S) and partial NADH dehydrogenase (nad1) mtDNA gene sequences of Psilochasmus spp. from Europe (Palearctic), North America (Nearctic) and South America (Neotropics) were used to assess the diversity of Psilochasmus spp. and explore the phylogenetic interrelationships among members of genus and to distinguish between species. Based on combined morphological and molecular data, descriptions of two new Psilochasmus species from Europe and North America, Psilochasmus slavaukrainii sp. nov. and Psilochasmus urbeni sp. nov., are provided, as well as the first morphological description of P. oxyurus specimens linked to DNA sequence data. In addition, a key to the identification of Psilochasmus spp. recognized as a result of this study has been constructed.
publishDate 2025
dc.date.none.fl_str_mv 2025-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/189491
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dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1313-2970
info:eu-repo/semantics/altIdentifier/doi/10.3897/zookeys.1254.162728
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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