Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea

For many ostracod groups in Korea, published records are missing or are very limited. Loxocaudinae is one such subfamily, with only one named species, Loxocaudaorientalis Schornikov, 2011 reported from Korea. Having fewer than 50 species, this subfamily can be considered a small ostracod group, with...

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Autores principales: Yoo, Hyunsu, Huyen, Pham Thi Minh, Chae, Jinho, Karanovic, Ivana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9840065/
https://www.ncbi.nlm.nih.gov/pubmed/36760774
http://dx.doi.org/10.3897/zookeys.1138.96201
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author Yoo, Hyunsu
Huyen, Pham Thi Minh
Chae, Jinho
Karanovic, Ivana
author_facet Yoo, Hyunsu
Huyen, Pham Thi Minh
Chae, Jinho
Karanovic, Ivana
author_sort Yoo, Hyunsu
collection PubMed
description For many ostracod groups in Korea, published records are missing or are very limited. Loxocaudinae is one such subfamily, with only one named species, Loxocaudaorientalis Schornikov, 2011 reported from Korea. Having fewer than 50 species, this subfamily can be considered a small ostracod group, with most of the species known only by their shell morphology. The diagnoses of genera are based on the shell characters that are often homoplastic, and soft body appendages that are difficult to observe, such as the mandibular exopodite. Because of this, the validity of the entire subfamily and some of its genera have been questioned. Here three Loxocaudinae species were collected from the marine macrobenthic assemblages from Korea. Two are new and belong to the genus Glacioloxoconcha Hartmann, 1990, previously known only from Antarctica: Glacioloxoconchajeongokensissp. nov. and Glacioloxoconchajisepoensissp. nov.Loxocaudaorientalis is briefly redescribed, with some of the populations having unusual morphological features. COI and 18S rRNA sequences of all three species are provided and the latter marker used to assess the position of the subfamily within the family Loxoconchidae and the superfamily Cytheroidea. The resulting tree shows that within the family Loxoconchidae, the genera Glacioloxoconcha and Loxocauda Schornikov, 1969 are the most closely related, with very shallow but well-supported branches. Polyphyletic and paraphyletic natures of several Cytheroidea families are discussed, inferred from the reconstructed phylogeny.
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spelling pubmed-98400652023-02-08 Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea Yoo, Hyunsu Huyen, Pham Thi Minh Chae, Jinho Karanovic, Ivana Zookeys Research Article For many ostracod groups in Korea, published records are missing or are very limited. Loxocaudinae is one such subfamily, with only one named species, Loxocaudaorientalis Schornikov, 2011 reported from Korea. Having fewer than 50 species, this subfamily can be considered a small ostracod group, with most of the species known only by their shell morphology. The diagnoses of genera are based on the shell characters that are often homoplastic, and soft body appendages that are difficult to observe, such as the mandibular exopodite. Because of this, the validity of the entire subfamily and some of its genera have been questioned. Here three Loxocaudinae species were collected from the marine macrobenthic assemblages from Korea. Two are new and belong to the genus Glacioloxoconcha Hartmann, 1990, previously known only from Antarctica: Glacioloxoconchajeongokensissp. nov. and Glacioloxoconchajisepoensissp. nov.Loxocaudaorientalis is briefly redescribed, with some of the populations having unusual morphological features. COI and 18S rRNA sequences of all three species are provided and the latter marker used to assess the position of the subfamily within the family Loxoconchidae and the superfamily Cytheroidea. The resulting tree shows that within the family Loxoconchidae, the genera Glacioloxoconcha and Loxocauda Schornikov, 1969 are the most closely related, with very shallow but well-supported branches. Polyphyletic and paraphyletic natures of several Cytheroidea families are discussed, inferred from the reconstructed phylogeny. Pensoft Publishers 2023-01-06 /pmc/articles/PMC9840065/ /pubmed/36760774 http://dx.doi.org/10.3897/zookeys.1138.96201 Text en Hyunsu Yoo, Pham Thi Minh Huyen, Jinho Chae, Ivana Karanovic https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Yoo, Hyunsu
Huyen, Pham Thi Minh
Chae, Jinho
Karanovic, Ivana
Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea
title Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea
title_full Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea
title_fullStr Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea
title_full_unstemmed Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea
title_short Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea
title_sort three loxocaudinae species (ostracoda, podocopida) from south korea
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9840065/
https://www.ncbi.nlm.nih.gov/pubmed/36760774
http://dx.doi.org/10.3897/zookeys.1138.96201
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