Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)

Hemiurid digeneans conspecific with Stomachicola muraenesocis Yamaguti, 1934 (the type species of the genus Stomachicola Yamaguti, 1934) were collected from the stomach of the daggertooth pike conger Muraenesox cinereus (Forsskål) off the Persian Gulf of Iran. This study aimed to provide a detailed...

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Main Authors: Reza Ghanei-Motlagh, Jesús S. Hernández-Orts, Mark D. Fast, Shona K. Whyte, Mansour El-Matbouli, Mona Saleh
Format: Article
Language:English
Published: Cambridge University Press 2024-01-01
Series:Parasitology
Subjects:
Online Access:https://www.cambridge.org/core/product/identifier/S0031182023001063/type/journal_article
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author Reza Ghanei-Motlagh
Jesús S. Hernández-Orts
Mark D. Fast
Shona K. Whyte
Mansour El-Matbouli
Mona Saleh
author_facet Reza Ghanei-Motlagh
Jesús S. Hernández-Orts
Mark D. Fast
Shona K. Whyte
Mansour El-Matbouli
Mona Saleh
author_sort Reza Ghanei-Motlagh
collection DOAJ
description Hemiurid digeneans conspecific with Stomachicola muraenesocis Yamaguti, 1934 (the type species of the genus Stomachicola Yamaguti, 1934) were collected from the stomach of the daggertooth pike conger Muraenesox cinereus (Forsskål) off the Persian Gulf of Iran. This study aimed to provide a detailed characterization of Stom. muraenesocis, including measurements, illustrations and scanning electron microscopy (s.e.m.) representations. Comparisons with the original and previous descriptions revealed morphological and metrical variations in several features (i.e. body size and shape, arrangement of reproductive organs, soma to ecsoma length ratio, position of genital opening, number of vitelline tubules and extension of uterine coils) between Stom. muraenesocis from different hosts and localities. This study presents the first molecular sequence data associated with the small (18S) and large (28S) subunit nuclear ribosomal RNA genes (rDNA) for Stom. muraenesocis. Phylogenetic analyses of the 18S dataset placed Stom. muraenesocis as sister lineage to a clade formed of a group of species of Lecithaster Lühe, 1901 (Lecithasteridae Odhner, 1905). In contrast, phylogenetic analyses based on the 28S consistently recovered a sister relationship between Stom. muraenesocis and representatives of the Hemiuridae Looss, 1899. Further comprehensive phylogenetically based classification in light of morphology and taxonomic history of the Hemiuridae and Lecithasteridae is required to infer phylogenetic affinities and historical biogeography of Stomachicola. A comprehensive list of previously reported species of Stomachicola together with their associated hosts, localities and morphometric data is provided.
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spelling doaj.art-143d5efb74af49c89f95419e05c606ec2024-02-13T07:37:42ZengCambridge University PressParasitology0031-18201469-81612024-01-01151244410.1017/S0031182023001063Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)Reza Ghanei-Motlagh0https://orcid.org/0000-0002-1191-8779Jesús S. Hernández-Orts1Mark D. Fast2Shona K. Whyte3Mansour El-Matbouli4Mona Saleh5https://orcid.org/0000-0001-9273-1502Division of Fish Health, University of Veterinary Medicine, Vienna, Austria Hoplite Research Lab, Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, CanadaNatural History Museum, London, UK Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czech RepublicHoplite Research Lab, Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, CanadaHoplite Research Lab, Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, CanadaDivision of Fish Health, University of Veterinary Medicine, Vienna, AustriaDivision of Fish Health, University of Veterinary Medicine, Vienna, AustriaHemiurid digeneans conspecific with Stomachicola muraenesocis Yamaguti, 1934 (the type species of the genus Stomachicola Yamaguti, 1934) were collected from the stomach of the daggertooth pike conger Muraenesox cinereus (Forsskål) off the Persian Gulf of Iran. This study aimed to provide a detailed characterization of Stom. muraenesocis, including measurements, illustrations and scanning electron microscopy (s.e.m.) representations. Comparisons with the original and previous descriptions revealed morphological and metrical variations in several features (i.e. body size and shape, arrangement of reproductive organs, soma to ecsoma length ratio, position of genital opening, number of vitelline tubules and extension of uterine coils) between Stom. muraenesocis from different hosts and localities. This study presents the first molecular sequence data associated with the small (18S) and large (28S) subunit nuclear ribosomal RNA genes (rDNA) for Stom. muraenesocis. Phylogenetic analyses of the 18S dataset placed Stom. muraenesocis as sister lineage to a clade formed of a group of species of Lecithaster Lühe, 1901 (Lecithasteridae Odhner, 1905). In contrast, phylogenetic analyses based on the 28S consistently recovered a sister relationship between Stom. muraenesocis and representatives of the Hemiuridae Looss, 1899. Further comprehensive phylogenetically based classification in light of morphology and taxonomic history of the Hemiuridae and Lecithasteridae is required to infer phylogenetic affinities and historical biogeography of Stomachicola. A comprehensive list of previously reported species of Stomachicola together with their associated hosts, localities and morphometric data is provided.https://www.cambridge.org/core/product/identifier/S0031182023001063/type/journal_articleDinurinaeHemiuroideaLecithasteridaemolecular characterizationmorphological variationrDNA sequence18S28Staxonomic revisiontrematode
spellingShingle Reza Ghanei-Motlagh
Jesús S. Hernández-Orts
Mark D. Fast
Shona K. Whyte
Mansour El-Matbouli
Mona Saleh
Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)
Parasitology
Dinurinae
Hemiuroidea
Lecithasteridae
molecular characterization
morphological variation
rDNA sequence
18S
28S
taxonomic revision
trematode
title Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)
title_full Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)
title_fullStr Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)
title_full_unstemmed Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)
title_short Morphological and molecular characterization of Stomachicola muraenesocis Yamaguti, 1934 (Digenea: Hemiuridae) from the daggertooth pike conger Muraenesox cinereus (Forsskål)
title_sort morphological and molecular characterization of stomachicola muraenesocis yamaguti 1934 digenea hemiuridae from the daggertooth pike conger muraenesox cinereus forsskal
topic Dinurinae
Hemiuroidea
Lecithasteridae
molecular characterization
morphological variation
rDNA sequence
18S
28S
taxonomic revision
trematode
url https://www.cambridge.org/core/product/identifier/S0031182023001063/type/journal_article
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