New morphological structures of Priapulus caudatus, Lamarck 1816 (Priapulida) and analysis of homologous characters across macroscopic priapulids

Jan Raeker; Katrine Worsaae; Andreas Schmidt-Rhaesa

doi:10.1016/j.jcz.2024.08.005

New morphological structures of Priapulus caudatus, Lamarck 1816 (Priapulida) and analysis of homologous characters across macroscopic priapulids

Jan Raeker^*, Katrine Worsaae, Andreas Schmidt-Rhaesa

^*Corresponding author af dette arbejde

Marine Biological Section

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

4 Citationer (Scopus)

42 Downloads (Pure)

Abstract

The macroscopic Priapulus caudatus Lamarck, 1816 is one of the most investigated priapulids, yet, the adult morphology warrants detailed characterization and analyses of potential priapulid homologies. Using light microscopy, scanning electron microscopy and histology, we examine adult specimens of P. caudatus from three localities in the Northeast Atlantic and the Arctic Oceans (Gullmarsfjord, North Sea, White Sea). Our examinations show ring papillae on the posterior trunk of P. caudatus for the first time in detail and describe previously overlooked structures on the circumoral field (hemispherical papillae, ring 0 scalids and circular folds). In addition, we add new information on pharyngeal teeth, scalids, trunk papillae, posterior warts, and on spinulets of the caudal appendage. The new collected data of P. caudatus allows us to compare structures across species of the macroscopic Priapulidae (Acanthopriapulus, Priapulopsis, Priapulus, Halicryptus) in detail and to build hypotheses on their homology within this clade.

Originalsprog	Engelsk
Tidsskrift	Zoologischer Anzeiger
Vol/bind	312
Sider (fra-til)	135-152
Antal sider	18
ISSN	0044-5231
DOI	https://doi.org/10.1016/j.jcz.2024.08.005
Status	Udgivet - 2024

Bibliografisk note

Funding Information:
We thank Katherine A. Turk (Vanderbilt University) for allocating us Priapulus caudatus specimens from the North Sea and Glafira Kolbasova (White Sea Biological Station, Lomonosov Moscow State University) for helping to collect specimens from the White Sea. Furthermore, we thank Elke Woelken (University of Hamburg) for providing essential help with the SEM and Karolin Engelkes and Lena Schwinger (Leibniz Institute for the Analysis of Biodiversity Change, Hamburg) for guidance in the morphology lab. This study was funded by the Deutsche Forschungsgemeinschaft (DFG, Germany Research Foundation) with the grant number SCHM 1278/20-1 to Andreas Schmidt-Rhaesa.

Publisher Copyright:
© 2024 The Authors

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title = "New morphological structures of Priapulus caudatus, Lamarck 1816 (Priapulida) and analysis of homologous characters across macroscopic priapulids",

abstract = "The macroscopic Priapulus caudatus Lamarck, 1816 is one of the most investigated priapulids, yet, the adult morphology warrants detailed characterization and analyses of potential priapulid homologies. Using light microscopy, scanning electron microscopy and histology, we examine adult specimens of P. caudatus from three localities in the Northeast Atlantic and the Arctic Oceans (Gullmarsfjord, North Sea, White Sea). Our examinations show ring papillae on the posterior trunk of P. caudatus for the first time in detail and describe previously overlooked structures on the circumoral field (hemispherical papillae, ring 0 scalids and circular folds). In addition, we add new information on pharyngeal teeth, scalids, trunk papillae, posterior warts, and on spinulets of the caudal appendage. The new collected data of P. caudatus allows us to compare structures across species of the macroscopic Priapulidae (Acanthopriapulus, Priapulopsis, Priapulus, Halicryptus) in detail and to build hypotheses on their homology within this clade.",

keywords = "Ecdysozoa, Histology, Homology, Priapulida, Priapulus caudatus, SEM",

author = "Jan Raeker and Katrine Worsaae and Andreas Schmidt-Rhaesa",

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year = "2024",

doi = "10.1016/j.jcz.2024.08.005",

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T1 - New morphological structures of Priapulus caudatus, Lamarck 1816 (Priapulida) and analysis of homologous characters across macroscopic priapulids

AU - Raeker, Jan

AU - Worsaae, Katrine

AU - Schmidt-Rhaesa, Andreas

PY - 2024

Y1 - 2024

N2 - The macroscopic Priapulus caudatus Lamarck, 1816 is one of the most investigated priapulids, yet, the adult morphology warrants detailed characterization and analyses of potential priapulid homologies. Using light microscopy, scanning electron microscopy and histology, we examine adult specimens of P. caudatus from three localities in the Northeast Atlantic and the Arctic Oceans (Gullmarsfjord, North Sea, White Sea). Our examinations show ring papillae on the posterior trunk of P. caudatus for the first time in detail and describe previously overlooked structures on the circumoral field (hemispherical papillae, ring 0 scalids and circular folds). In addition, we add new information on pharyngeal teeth, scalids, trunk papillae, posterior warts, and on spinulets of the caudal appendage. The new collected data of P. caudatus allows us to compare structures across species of the macroscopic Priapulidae (Acanthopriapulus, Priapulopsis, Priapulus, Halicryptus) in detail and to build hypotheses on their homology within this clade.

AB - The macroscopic Priapulus caudatus Lamarck, 1816 is one of the most investigated priapulids, yet, the adult morphology warrants detailed characterization and analyses of potential priapulid homologies. Using light microscopy, scanning electron microscopy and histology, we examine adult specimens of P. caudatus from three localities in the Northeast Atlantic and the Arctic Oceans (Gullmarsfjord, North Sea, White Sea). Our examinations show ring papillae on the posterior trunk of P. caudatus for the first time in detail and describe previously overlooked structures on the circumoral field (hemispherical papillae, ring 0 scalids and circular folds). In addition, we add new information on pharyngeal teeth, scalids, trunk papillae, posterior warts, and on spinulets of the caudal appendage. The new collected data of P. caudatus allows us to compare structures across species of the macroscopic Priapulidae (Acanthopriapulus, Priapulopsis, Priapulus, Halicryptus) in detail and to build hypotheses on their homology within this clade.

KW - Ecdysozoa

KW - Histology

KW - Homology

KW - Priapulida

KW - Priapulus caudatus

KW - SEM

U2 - 10.1016/j.jcz.2024.08.005

DO - 10.1016/j.jcz.2024.08.005

M3 - Journal article

AN - SCOPUS:85202558883

SN - 0044-5231

VL - 312

SP - 135

EP - 152

JO - Zoologischer Anzeiger

JF - Zoologischer Anzeiger

ER -