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Taxonomy on Aquatic Life (TAL)
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Taxonomy on Aquatic Life (TAL)

A topical collection in Taxonomy (ISSN 2673-6500).

Viewed by 17296

Editor

Prof. Dr. Wonchoel Lee

E-Mail Website
Collection Editor
Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea
Interests: taxonomy; Copepoda; Harpacticoida; Foraminifera; jellyfishes; meiofauna; zooplankton; marine diversity
Special Issues, Collections and Topics in MDPI journals

Topical Collection Information

Dear Colleagues,

TAL is one of the proceedings of MEAL (Meeting of Experts on Aquatic Life: https://wlee11.wixsite.com/meal), an online scientific meeting platform for researchers working on aquatic organisms, from microbes and fungi to plants and animals. MEAL was established in June 2020 in the middle of the COVID-19 pandemic and aims to encourage the continuation of both scientific activities and communications among experts working on aquatic organisms. It has been organized as a yearly event, with the first regular online MEAL meeting scheduled to be hosted on November 11, 2020. The scope of MEAL is broad, and all studies on taxonomy, ecology, and biodiversity of aquatic organisms including Benthos, Plankton, and Nekton are welcome. Among the contributions in the MEAL, alpha taxonomy works are published in the present collection, TAL, and the other contributions could be published in the PEAL: https://www.mdpi.com/journal/diversity/special_issues/proceedings_aquatic_life

Prof. Dr. Wonchoel Lee
Collection Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the collection website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Taxonomy is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • taxonomy
  • marine
  • freshwater
  • meiofauna
  • macrofauna
  • plankton
  • algae
  • protists
  • invertebrate
  • vertebrate

Published Papers (6 papers)

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2025

Jump to: 2023, 2021, 2020

20 pages, 2883 KB  
Article
Systematic Evaluation of Sea Stars of the Genus Heliaster from the Southeastern Pacific and Redescription of Heliaster helianthus
by Jennifer Catalán, Christian M. Ibáñez, Sergio A. Carrasco, Javier Sellanes, Angie Díaz and M. Cecilia Pardo-Gandarillas
Taxonomy 2025, 5(4), 59; https://doi.org/10.3390/taxonomy5040059 - 17 Oct 2025
Viewed by 772
Abstract
Heliaster has long been considered to comprise seven nominal species of starfish distributed across the Eastern Pacific, from Baja California (Mexico) southward to central Chile. Along the southeastern Pacific coast, three taxa have been traditionally recognized: H. helianthus (Paita, northern Peru, to Concepción, [...] Read more.
Heliaster has long been considered to comprise seven nominal species of starfish distributed across the Eastern Pacific, from Baja California (Mexico) southward to central Chile. Along the southeastern Pacific coast, three taxa have been traditionally recognized: H. helianthus (Paita, northern Peru, to Concepción, central-southern Chile), H. polybrachius (Mexico to Perú), and H. canopus (Juan Fernández Archipelago and Desventuradas Islands). However, extensive morphological overlap among these forms has cast doubt on the validity of H. canopus, with some authors treating it as a synonym for H. helianthus. To clarify this ambiguity, we applied an integrative framework combining detailed morphometrics, phylogenetic inference from mitochondrial (COI) and nuclear (H3) markers, and two species delimitation approaches (bPTP and ASAP). Our sampling spanned Peru, continental Chile, and the oceanic islands of Juan Fernández and Desventuradas. Variation in ray number and relative arm length among H. helianthus, H. canopus, and H. polybrachius proved allometric, scaling strongly with body diameter rather than indicating discrete species boundaries. Molecular data show >95% sequence similarity across all nominal taxa and recover a single, well-supported clade; bPTP and ASAP likewise support one Heliaster lineage throughout the southeastern Pacific, corresponding to H. helianthus. Accordingly, we redescribe H. helianthus, designate a neotype from Quintay, Chile, and formally synonymize H. canopus and H. polybrachius under H. helianthus. Our results indicate that a single species spans the Eastern Pacific from Ecuador and Peru to central-southern Chile, including offshore islands, underscoring the value of integrative taxonomy for robust delimitation and accurate biodiversity assessments in marine invertebrates. Full article
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11 pages, 4244 KB  
Article
Cyclotella or Discostella? An Evaluation of the Morphological and Molecular Evidence Regarding the Generic Placement of a Centric Diatom from Eastern Asia and the Creation of Discocyclus gen. nov.
by Patrick Rioual, Konrad Schultz, Gyeongje Joh and Mengna Liao
Taxonomy 2025, 5(2), 17; https://doi.org/10.3390/taxonomy5020017 - 22 Mar 2025
Viewed by 1025
Abstract
In this study on diatoms, which are unicellular microalgae with a siliceous cell wall, images obtained by electron microscopy were used to compare three taxa from East Asia that were referred as Cyclotella hubeiana, Discostella guiyangensis and “Cyclotella fottii” in [...] Read more.
In this study on diatoms, which are unicellular microalgae with a siliceous cell wall, images obtained by electron microscopy were used to compare three taxa from East Asia that were referred as Cyclotella hubeiana, Discostella guiyangensis and “Cyclotella fottii” in the original studies. Morphometrical and morphological analyses indicate that these three taxa are conspecific. The distinctive morphological features of this species are the following: one rimoportula located on the valve mantle within the ring of marginal fultoportulae, marginal fultoportulae situated on costae with internally two satellite pores positioned circumferentially (laterally) and externally long tubular opening, biseriate striae and branching costae. A comparison of these morphological features with those of Discostella and Cyclotella species and a re-assessment of the existing molecular data suggest that this species could be separated from both these genera. On this basis, we describe the new genus Discocyclus gen. nov. with Discocyclus hubeianus comb. nov. as the type species. Full article
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2023

Jump to: 2025, 2021, 2020

25 pages, 2107 KB  
Article
Description of Stolephorus horizon n. sp. from Fiji and Tonga, and redescription of Stolephorus scitulus (Fowler, 1911) (Teleostei: Clupeiformes: Engraulidae)
by Harutaka Hata and Hiroyuki Motomura
Taxonomy 2023, 3(3), 356-380; https://doi.org/10.3390/taxonomy3030021 - 4 Jul 2023
Cited by 7 | Viewed by 2328
Abstract
The new anchovy Stolephorus horizon n. sp., described on the basis of 34 specimens collected from Fiji and Tonga, has been previously confused with Stolephorus indicus (van Hasselt, 1823) or Stolephorus scitulus (Fowler, 1911). However, the new species differs from both of the [...] Read more.
The new anchovy Stolephorus horizon n. sp., described on the basis of 34 specimens collected from Fiji and Tonga, has been previously confused with Stolephorus indicus (van Hasselt, 1823) or Stolephorus scitulus (Fowler, 1911). However, the new species differs from both of the latter in having the pectoral fin without melanophores, and a unique range of gill rakers. A redescription of S. scitulus and an identification key of species previously identified as S. indicus are also provided. Full article
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2021

Jump to: 2025, 2023, 2020

10 pages, 2720 KB  
Article
A Brief Report of Five Newly Recorded Korean Modern Benthic Foraminiferal Species
by Somin Lee, Fabrizio Frontalini and Wonchoel Lee
Taxonomy 2021, 1(4), 438-447; https://doi.org/10.3390/taxonomy1040031 - 14 Dec 2021
Viewed by 3590
Abstract
The present study describes five newly recorded modern benthic foraminiferal species from the subtidal zone near Jeju Island and East China Sea (Korea). The newly recorded species (Karrerulina conversa, Rotaliammina trumbulli, Vertebralina striata, Pegidia dubia and Amphistegina radiata) [...] Read more.
The present study describes five newly recorded modern benthic foraminiferal species from the subtidal zone near Jeju Island and East China Sea (Korea). The newly recorded species (Karrerulina conversa, Rotaliammina trumbulli, Vertebralina striata, Pegidia dubia and Amphistegina radiata) belong to five families (Prolixoplectidae, Trochamminidae, Fischerinidae, Pegidiidae and Amphisteginidae), three orders (Lituolida, Miliolida and Rotaliida) and two classes (Globothalamea and Tubothalamea). All these five genera (Karrerulina, Rotaliammina, Vertebralina, Pegidia and Amphistegina) were also reported for the first time from Korean waters. Most of the examined specimens were highly consistent morphologically with previous records from southern China and Japan. Additionally, Amphistegina is one of the symbiont-bearing larger benthic foraminifera, known to be mainly distributed in tropical to warm subtropical waters. This study contributes to the expansion of data on the recent foraminiferal species diversity in Korean waters. Full article
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2020

Jump to: 2025, 2023, 2021

13 pages, 8167 KB  
Article
A New Deep-Sea Enhydrosoma (Copepoda, Harpacticoida, Cletodidae) from the Northern Gulf of Mexico
by Eun-Ok Park, Melissa Rohal and Wonchoel Lee
Taxonomy 2021, 1(1), 23-35; https://doi.org/10.3390/taxonomy1010004 - 13 Nov 2020
Cited by 2 | Viewed by 3972
Abstract
Enhydrosoma texana sp. nov. is described from the northern Gulf of Mexico. The new species is closely related to E. parapropinquum Gómez, 2003 from northwestern Mexico. Both species share several characters including an elongated cylindrical caudal ramus, an abexopodal seta of antennae, the [...] Read more.
Enhydrosoma texana sp. nov. is described from the northern Gulf of Mexico. The new species is closely related to E. parapropinquum Gómez, 2003 from northwestern Mexico. Both species share several characters including an elongated cylindrical caudal ramus, an abexopodal seta of antennae, the structure of mouthpart appendages, seta formula of thoracic legs P1–P4, the shape of the P5 exopod in the female and the apophysis structure of P3 in males. However, the new species is distinguishable from E. parapropinquum by the shape of the rostrum, number of the antennular segments, the shape of the mandibular palp, the relative lengths of the thoracic legs, the shape of the apophysis of P3 in the male, setal number and length of the P5 exopod of the female, the length of the seta on P5 in the male and the relative lengths of the caudal ramus in both sexes. This is the deepest record of a species in the genus Enhydrosoma. Full article
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12 pages, 40295 KB  
Article
A New Species of the Genus Halectinosoma Vervoort, 1962 (Copepoda: Harpacticoida: Ectinosomatidae) from the East Coast of Korea, with a Key to Species of the Curticorne-Group
by Hyun Woo Bang
Taxonomy 2021, 1(1), 2-13; https://doi.org/10.3390/taxonomy1010002 - 29 Oct 2020
Viewed by 3342
Abstract
A new species of genus Halectinosoma Vervoort, 1962 was collected from the east coast of Korea. The genus Halectinosoma comprises about 70 species, but only three species have previously been reported in East Asia. Halectinosoma munmui sp. nov. is morphologically most closely related [...] Read more.
A new species of genus Halectinosoma Vervoort, 1962 was collected from the east coast of Korea. The genus Halectinosoma comprises about 70 species, but only three species have previously been reported in East Asia. Halectinosoma munmui sp. nov. is morphologically most closely related to H. langi Wells 1967 from Inhaca Island, Mozambique, and H. oblongum (Kunz, 1949) from Heligoland island, Germany, however clearly distinguishable from it based on the following morphological characteristics: 5-segmented and elongated female antennule, mandible gnathobase without seta, about 5.6 times as long as the greatest width of the basis of the maxilliped, and outer seta of the P5 endopodal lobe longer than the inner seta. A key to species of the curticorne-group of Halectinosoma is provided. Full article
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