Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle

<i>Mycetomorpha vancouverensis</i> is an enigmatic parasitic barnacle from the family Mycetomorphidae, known for its unclear phylogenetic position within Rhizocephala. Specimens of <i>M. vancouverensis</i> were collected from infected <i>Neocrangon communis</i> sh...

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Main Authors: Aleksei Miroliubov, Anastasia Lianguzova, Darya Krupenko, Liudmila Poliushkevich, Semyon Novokreshchennykh, Natalia Arbuzova, Georgii Kremnev
Format: Article
Language:English
Published: MDPI AG 2024-11-01
Series:Biology
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Online Access:https://www.mdpi.com/2079-7737/13/12/968
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author Aleksei Miroliubov
Anastasia Lianguzova
Darya Krupenko
Liudmila Poliushkevich
Semyon Novokreshchennykh
Natalia Arbuzova
Georgii Kremnev
author_facet Aleksei Miroliubov
Anastasia Lianguzova
Darya Krupenko
Liudmila Poliushkevich
Semyon Novokreshchennykh
Natalia Arbuzova
Georgii Kremnev
author_sort Aleksei Miroliubov
collection DOAJ
description <i>Mycetomorpha vancouverensis</i> is an enigmatic parasitic barnacle from the family Mycetomorphidae, known for its unclear phylogenetic position within Rhizocephala. Specimens of <i>M. vancouverensis</i> were collected from infected <i>Neocrangon communis</i> shrimps near the South Kuril Islands. Detailed morphological studies were conducted using histological techniques and scanning electron microscopy, and 18S rDNA sequences were used to resolve the phylogenetic position of <i>M. vancouverensis</i> within Rhizocephala. Morphological analysis revealed a complex externa structure with spermatogenic bodies and the presence of a main trunk in the interna. Some of the side branches of the interna invade the host’s nerve tissue and are modified into specialized goblet-shaped organs. These invasive rootlets are morphologically similar to the goblet-shaped organs in the family Peltogastridae. Molecular analysis confirmed that the Mycetomorphidae is a sister group to the Peltogastridae. At the same time, peltogastrids were recovered as polyphyletic. Our findings contribute to the understanding of the evolution of parasitic barnacles and highlight the unique adaptations of Mycetomorphidae within the broader context of Rhizocephala.
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spelling doaj-art-da867efe385f4a1ba646d2d2a88ebd762025-08-20T02:01:06ZengMDPI AGBiology2079-77372024-11-01131296810.3390/biology13120968Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic BarnacleAleksei Miroliubov0Anastasia Lianguzova1Darya Krupenko2Liudmila Poliushkevich3Semyon Novokreshchennykh4Natalia Arbuzova5Georgii Kremnev6Laboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya Embankment 1, Saint-Petersburg 199034, RussiaLaboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya Embankment 1, Saint-Petersburg 199034, RussiaLaboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya Embankment 1, Saint-Petersburg 199034, RussiaDepartment of Embryology, Saint-Petersburg State University, Universitetskaya Emb., 7/9, Saint-Petersburg 199034, RussiaSakhalin Branch of the Russian Federal Research Institute of Fisheries and Oceanography, Komsomolskaya Street, 196, Yuzhno-Sakhalinsk 693023, RussiaLaboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya Embankment 1, Saint-Petersburg 199034, RussiaLaboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya Embankment 1, Saint-Petersburg 199034, Russia<i>Mycetomorpha vancouverensis</i> is an enigmatic parasitic barnacle from the family Mycetomorphidae, known for its unclear phylogenetic position within Rhizocephala. Specimens of <i>M. vancouverensis</i> were collected from infected <i>Neocrangon communis</i> shrimps near the South Kuril Islands. Detailed morphological studies were conducted using histological techniques and scanning electron microscopy, and 18S rDNA sequences were used to resolve the phylogenetic position of <i>M. vancouverensis</i> within Rhizocephala. Morphological analysis revealed a complex externa structure with spermatogenic bodies and the presence of a main trunk in the interna. Some of the side branches of the interna invade the host’s nerve tissue and are modified into specialized goblet-shaped organs. These invasive rootlets are morphologically similar to the goblet-shaped organs in the family Peltogastridae. Molecular analysis confirmed that the Mycetomorphidae is a sister group to the Peltogastridae. At the same time, peltogastrids were recovered as polyphyletic. Our findings contribute to the understanding of the evolution of parasitic barnacles and highlight the unique adaptations of Mycetomorphidae within the broader context of Rhizocephala.https://www.mdpi.com/2079-7737/13/12/968parasitic barnaclesMycetomorphidaephylogenyinternainvasive rootletshost–parasite interaction
spellingShingle Aleksei Miroliubov
Anastasia Lianguzova
Darya Krupenko
Liudmila Poliushkevich
Semyon Novokreshchennykh
Natalia Arbuzova
Georgii Kremnev
Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle
Biology
parasitic barnacles
Mycetomorphidae
phylogeny
interna
invasive rootlets
host–parasite interaction
title Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle
title_full Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle
title_fullStr Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle
title_full_unstemmed Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle
title_short Internal Morphology and Phylogenetic Position of <i>Mycetomorpha vancouverensis</i> (Pancrustacea: Rhizocephala), an Enigmatic Parasitic Barnacle
title_sort internal morphology and phylogenetic position of i mycetomorpha vancouverensis i pancrustacea rhizocephala an enigmatic parasitic barnacle
topic parasitic barnacles
Mycetomorphidae
phylogeny
interna
invasive rootlets
host–parasite interaction
url https://www.mdpi.com/2079-7737/13/12/968
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