New records of benthic harpacticoids from Korea: I. Three new species of the genus <i>Zosime</i> Boeck (Copepoda: Harpacticoida: Zosimeidae)

Kim, Jong Guk; Lee, Jimin

doi:10.1080/17451000.2019.1619774

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Many researchers have devoted considerable effort to the study of the diversity of benthic harpacticoids in Korean waters, which have the greatest number of species per unit area ( Costello et al 2010 ); currently, ~ 200 marine harpacticoids species have been discovered in various habitats in this region ( Chang 2010 , Lee et al 2012 , Song et al 2012 , Choi 2022 ). Nevertheless, many Korean harpacticoid species remain unidentified ( Back and Lee 2014 , Kim 2014 , Kim 2017 ) and subtidal harpacticoid copepods are particularly poorly known due to the difficulty in obtaining specimens. Recent efforts have begun to reveal the diversity of subtidal marine benthic copepods (> 50 m depth) around the Korean Peninsula ( Huys and Lee 2018 , Lee and Huys 2019 , Kim and Lee 2019 , Kim et al 2021b ).…”

Section: Introductionmentioning

confidence: 99%

A new species of the genus Stylicletodes Lang, 1936 (Copepoda, Harpacticoida, Cletodidae) from South Korea

Cho¹,

Kim²,

Lee³

2022

BDJ

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Marine benthic harpacticoid copepods are poorly known in Korea due to the difficulty in obtaining specimens. Currently, the genus Stylicletodes Lang, 1936, which is known to occur in subtidal sediments, has not been reported in this area so far. During surveys on the subtidal meiofauna, we found a new species of Stylicletodes from several subtidal muddy sediments in the Yellow Sea and South Sea. In this study, we describe both sexes of a new species of Stylicletodes collected from the Yellow Sea and South Sea of Korea. Stylicletodes trifidus sp. nov. differs from its congeners in the following characteristics: the trifid rostrum, relative length ratio of the endopods to exopods on legs 1–4, reduced armature formulae on legs 3–4, constricted shape at mid-length of the anal somite, and structure of the sexually dimorphic male leg 3 with a two-segmented endopod. The new species underwent loss of the maxilliped, which is very rare in harpacticoids and is probably an important clue for the phylogeny of the species of Stylicletodes.

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Section: Introductionmentioning

confidence: 99%

A new species of the genus Stylicletodes Lang, 1936 (Copepoda, Harpacticoida, Cletodidae) from South Korea

Cho¹,

Kim²,

Lee³

2022

BDJ

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“…The monophyly of the family is supported by many autapomorphies, e.g., the mandibular palp exhibits a small one-segmented exopod, a stenopodial maxilliped and a unique fifth leg in both sexes (Seifried 2003;Koller & George 2011). Most of the 25 known species have been recorded from the Atlantic Ocean, but their geographical distribution is wide and it is estimated that the species diversity is high (Koller & George 2011;Kim & Lee 2019). Zosimeid copepods are found in sedimentary environments in both shallow and deep waters; only Z. mediterranea Lang, 1948 was described from an algal assemblage (Seifried 2004).…”

Section: Introductionmentioning

confidence: 99%

“…In the Pacific Ocean, only five named species of the Zosimeidae are known: Zosime pacifica Fiers, 1991 (ranging from the littoral region to the deep sea of the Santa Maria Basin) (Fiers 1991), Z. changi Kim & Lee, 2019, Z. comata Kim & Lee, 2019, Z. destituta Kim, Jung & Yoon, 2016 and Z. gymnokosmosa Kim & Lee, 2019 (all from littoral regions of the Southern Sea, Korea) (Kim et al 2016;Kim & Lee 2019). However, many undescribed oceanic species of Zosime and Pseudozosime have been reported in certain ecological studies (e.g., Shimanaga et al 2004;Kitahashi et al 2013;Schmidt et al 2018Schmidt et al , 2019.…”

Section: Introductionmentioning

confidence: 99%

Proposal of two new genera of the family Zosimeidae Seifried (Copepoda: Harpacticoida): Heterozosime gen. nov. and Acritozosime gen. nov.

Kim

Lee

2021

EJT

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In the Pacific Ocean, the taxonomy of the family Zosimeidae Seifried, 2003 is poorly understood and to date only five species of the genus Zosime Boeck, 1873 are known. During oceanographic cruises exploring the species diversity of harpacticoids, two undescribed zosimeid copepods were sampled from shallow Korean waters and the deep northwestern Pacific. A detailed morphological examination has led us to propose two new genera, Heterozosime gen. nov. for the Korean zosimeid H. tenuis gen. et sp. nov. and Acritozosime gen. nov. for the deep-sea zosimeid A. spinesco gen. et sp. nov. Both new genera exhibit a distinctive feature in that the first thoracic leg has a two-segmented exopod, in contrast to the three-segmented exopod of this leg in all known zosimeid genera. Furthermore, Acritozosime gen. nov. can also be discriminated from other genera by the two-segmented endopod in second to fourth thoracic legs and the reduced setal armatures of the second exopodal segment of antenna, the first endopodal segment of first to third thoracic legs and the third exopodal segment in second to fourth thoracic legs. A comparison of the fundamental structures of appendages suggests that A. spinesco gen. et sp. nov. experienced a unique evolutionary history within the Zosimeidae.

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On New Species of Three Genera of Zosimeidae Seifried, 2003 (Copepoda: Harpacticoida) from the Deep Sea of the Gulf of California and Gulf of Mexico, with Notes on the Phylogeny of the Family and on the Species Groups of Zosime Boeck, 1873

Gómez

Yáñez-Rivera

2023

Diversity

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Thirty-one nominal species of the benthic harpacticoid family Zosimeidae Seifried, 2003 are known from several coastal systems less than 200 m depth and the deep sea. Several copepods of the family Zosimeidae were found in deep-sea sediment samples from the Gulf of Mexico and the Gulf of California (Mexico). The Mexican material represents new species of the genera Zosime Boeck, 1873, Peresime Dinet, 1974, Heterozosime Kim and Lee, 2021, and Acritozosime Kim and Lee, 2021. Standardized and complete descriptions for these new species are provided. Previous studies have shown that the genus Zosime can be subdivided into two species groups. We performed phylogenetic analyses (88 characters and 42 taxa) to test the naturalness of such subdivision, to subdivide these groupings further, and to shed some light on the phylogenetic relationships among the zosimeid genera and their species. Our results confirmed (i) the monophyly of previous subdivisions of the genus Zosime, and (ii) that the genus Zosime can be further subdivided into two major subgroups composed of several subordinate clades. Additionally, some comments on the phylogenetic hypotheses amongst the species of each genus reported here, are provided.

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New records of benthic harpacticoids from Korea: I. Three new species of the genus Zosime Boeck (Copepoda: Harpacticoida: Zosimeidae)

Cited by 3 publications

References 17 publications

A new species of the genus Stylicletodes Lang, 1936 (Copepoda, Harpacticoida, Cletodidae) from South Korea

A new species of the genus Stylicletodes Lang, 1936 (Copepoda, Harpacticoida, Cletodidae) from South Korea

Proposal of two new genera of the family Zosimeidae Seifried (Copepoda: Harpacticoida): Heterozosime gen. nov. and Acritozosime gen. nov.

On New Species of Three Genera of Zosimeidae Seifried, 2003 (Copepoda: Harpacticoida) from the Deep Sea of the Gulf of California and Gulf of Mexico, with Notes on the Phylogeny of the Family and on the Species Groups of Zosime Boeck, 1873

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