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A New Record of Paramphicteis weberi (Polychaeta: Terebellida: Ampharetidae) in Korean Fauna
Geon Hyeok Lee,Seong Myeong Yoon,Gi-Sik Min 한국동물분류학회 2021 Animal Systematics, Evolution and Diversity Vol.37 No.2
An ampharetid polychaete, Paramphicteis weberi (Caullery, 1944), originally described from Indonesia, is newly reported from Korean waters. Paramphicteis weberi is characterized by the presence of the prostomial glandular ridges, nuchal ridges, pinnate buccal tentacles, four pairs of the foliose branchiae, and paleae in segment II. The mitochondrial cytochrome c oxidase subunit I (COI), 16S ribosomal DNA (16S rDNA), and nuclear 18S ribosomal DNA (18S rDNA) sequences from the Korean specimens of P. weberi were determined. The intra-specific genetic distance was 0.0-0.2% in COI and no variation was detected in 16S rDNA and 18S rDNA. The inter-specific genetic distances between several Amphicteis species were 20.0-22.0% in COI, 15.3-20.4% in 16S rDNA, and 1.3-3.1% in 18S rDNA. This is the first record of the genus Paramphicteis Caullery, 1944 in Korean fauna.
Geon Hyeok Lee,Hyun Ki Choi,Seong Myeong Yoon,Gi-Sik Min 한국동물분류학회 2022 Animal Systematics, Evolution and Diversity Vol.38 No.3
Scolelepis (Scolelepis) lingulata is newly reported in Korean waters. This species, collected from the intertidal zone of the Yellow Sea, is in good agreement with the original and subsequent descriptions in presence of occipital antenna, conspicuously large and lingulate interramal lobes in posterior chaetigers, absence of hooded hooks in notopodia, and unidentate hooded hooks present in neuropodia. Additionally, Korean specimens previously identified as Scolelepis (Scolelepis) kudenovi are reexamined based on the morphology. As a result, these specimens were identified as Scolelepis (Scolelepis) daphoinos in terms of the presence of reddish-brown pigmentation along the transverse ciliated bands on the dorsum. The identification key to Scolelepis species from Korean waters is provided.
Geon Hyeok Lee,Ha-Eun Lee,Gi-Sik Min 한국동물분류학회 2021 Animal Systematics, Evolution and Diversity Vol.37 No.4
Scolelepis (Parascolelepis) papillosa (Okuda, 1937), originally described from a single incomplete individual from Jeju Island in Korea, was collected from the intertidal sandflats of Soan Island (Jeollanam-do province) in Korea. The examined specimens of S. (P.) papillosa agree well with the original description in having the papillae on the basal sheath of the palps, presence of occipital antenna, absence of notochaetae in chaetiger 1, branchiae completely fused with notopodial postchaetal lamellae at the anterior chaetigers, and neuropodial hooded hooks appearing from chaetiger 16. In this study, the sequences of partial mitochondrial cytochrome c oxidase subunit I (COI), 16S ribosomal DNA (16S rDNA), and the nuclear 18S ribosomal DNA (18S rDNA) of the species were determined. We also provide the detailed description and illustrations on this species based on the complete specimens newly collected in this study.
Geon Hyeok Lee,Seong Myeong Yoon,Gi-Sik Min 한국동물분류학회 2020 Animal Systematics, Evolution and Diversity Vol.36 No.4
In this study, Prionospio depauperata Imajima, 1990 is newly reported in Korean fauna. Prionospio depauperata can be distinguished from other relatives by the four pairs of branchiae which are pinnate on chaetigers 2 and 5, and apinnate on chaetigers 3 and 4; caruncle extending to the end of chaetiger 2; and moderate dorsal crest present on chaetigers 7-13. The morphological diagnosis of P. depauperata are provided with the photographs of four Prionospio species. The mitochondrial cytochrome c oxidase subunit 1 (CO1), 16S ribosomal DNA (16S rDNA), and the nuclear 18S ribosomal DNA (18S rDNA) sequences of four Prionospio species from Korean waters, P. depauperata Imajima, 1990, P. japonica Okuda, 1935, P. krusadensis Fauvel, 1929, and P. membranacea Imajima, 1990, were determined for the first time. The inter-specific genetic distances among the congeners of four Prionospio species were 22.3-29.6% in CO1, 10.5-25.0% in 16S rDNA, and 0.3-3.6% in 18S rDNA.
Geon Hyeok Lee,Hyun Ki Choi,Seong Myeong Yoon 한국동물분류학회 2019 Animal Systematics, Evolution and Diversity Vol.35 No.4
Two new records of spionid polychaetes, Malacoceros reductus Blake & Kudenov, 1978 and Pseudopolydora cf. kempi (Southern, 1921), collected from Korean waters are reported here with detailed descriptions and illustrations. Malacoceros reductus, only reported in New South Wales, Australia, is distinguishable from its relatives by a prostomium with lateral horns, reduction of chaetiger 1, and the presence of the tridentate hooded hooks. Pseudopolydora cf. kempi, which has been known to have a wide geographical distribution, is characterized by a prostomium incised anteriorly, the presence of the occipital antenna, and two rows of black spots on the dorsal side. In this paper, photographs of scanning electron microscopy for characteristic features of each species are presented.
Two New Records of Spionid Polychaetes (Polychaeta: Spionidae) in Korean Fauna
Geon Hyeok Lee,Hyun Ki Choi,Seong Myeong Yoon 한국동물분류학회 2018 Animal Systematics, Evolution and Diversity Vol.34 No.3
Two new records of spionid polychaetes, Prionospio pulchra Imajima, 1990 and Scolelepis (Scolelepis) sagittaria Imajima, 1992, collected from Korean waters are reported here with detailed descriptions and illustrations. Prionospio pulchra can be distinguished from its relatives by remarkably long and apinnate branchiae, the first chaetiger with notopodial chaetae, and the presence of ventral sabre chaetae. Scolelepis (Scolelepis) sagittaria is characterized by a sagittate prostomium, an occipital tentacle, and bi- or tridentate hooded hooks. In this paper, photographs of scanning electron microscopy for characteristic features of each species are presented. Keys to Prionospio and Scolelepis species from Korean waters are also provided.
DNA Barcoding of Boccardiella hamata (Annelida: Polychaeta: Spionidae) in South Korea
Geon Hyeok Lee,Seong Myeong Yoon,Gi-Sik Min 한국동물분류학회 2020 Animal Systematics, Evolution and Diversity Vol.36 No.3
A spionid polychaete, Boccardiella hamata (Webster, 1879) has been found from mud in crevices between the shells of oysters and adherent substrates in South Korea. The sequences of mitochondrial DNA (mtDNA) cytochrome c oxidase subunit 1 (CO1), 16S ribosomal DNA (16S), and the nuclear 18S ribosomal DNA (18S) from Korean individuals of Boccardiella hamata were determined in the present study. The molecular analysis based on the 18S rRNA gene sequences showed clear separation among the spionid polychaete species, and the sequences of Korean and Japanese individuals are completely identical. The morphological diagnosis and photographs of B. hamata are also provided.
First Record of Scolelepis (Scolelepis) daphoinos (Annelida: Polychaeta: Spionidae) in South Korea
Geon Hyeok Lee,Gi-Sik Min 한국동물분류학회 2021 Animal Systematics, Evolution and Diversity Vol.37 No.3
Scolelepis (Scolelepis) daphoinos is newly reported in Korean fauna. This species can be distinguished from its congeners by the following characteristics: the presence of reddish pigment patches on the posterior part of the prostomium, notopodial postchaetal lamellae that are partially fused to the branchiae, and the presence of only the bidentate hooded hooks. The morphological diagnosis and photographs of S. (S.) daphoinos are provided. The partial mitochondrial cytochrome c oxidase subunit I (COI), 16S ribosomal DNA (16S rDNA), and the nuclear 18S ribosomal DNA (18S rDNA) sequences from Korean specimens of S. (S.) daphoinos were determined. Species identification was supported by a comparison of DNA barcode sequences of COI and 16S rDNA with morphological examination from the specimens of type locality, China.
New Report of Scolelepis geniculata (Annelida: Spionidae) in Korean Fauna
Geon Hyeok Lee,박태서 한국동물분류학회 2023 Animal Systematics, Evolution and Diversity Vol.39 No.4
The spionid polychaete Scolelepis geniculata, originally described in Japan, is newly recorded in the Korean fauna. Specimens collected from the eastern and southern coasts of Korea between May 1999 and October 2002, stored in the invertebrate collection of the National Institute of Biological Resources, were examined based on their morphology. Scolelepis geniculata is morphologically most similar to S. yamaguchii from Japan and Korea but is distinguished by having branchiae separated from the notopodial lamellae in posterior chaetigers and notopodial prechaetal lamellae digitiform in anterior chaetigers instead of subtriangular. A detailed morphological description of S. geniculate, and an amended identification key to all Korean Scolelepis species is provided.