• 제목/요약/키워드: Biological evolution

검색결과 706건 처리시간 0.021초

First Record of the Monotypic Species, Nonparahalosydna pleiolepis (Polychaeta: Polynoidae) from Korean Waters, with Its DNA Barcoding Information

  • Kim, Kwang-Soo;Choi, Hyun Ki;Lee, Wonchoel;Park, Taeseo
    • Animal Systematics, Evolution and Diversity
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    • 제36권3호
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    • pp.258-263
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    • 2020
  • The aim of this study is to report monotypic species, Nonparahalosydna pleiolepis(Marenzeller, 1879) for the first time from Korean waters with its DNA barcoding data. We collected individuals of the species from the subtidal zone of southern coast of Korea through scuba diving. To estimate DNA barcoding gap, the pairwise genetic distances were calculated between N. pleiolepis and its congeners (Halosydna brevisetosa Kinberg, 1856 and Lepidonotus squamatus (Linnaeus, 1758)) based on the cytochrome c oxidase subunit I gene (COI). Inter-specific genetic distances ranged from 18.7% to 24.6%, while intra-specific genetic distance within N. pleiolepis ranged from 0.3% to 0.5%. The maximum intra-specific genetic distance among the three species was 1.4%. The morphological diagnosis of N. pleiolepis with a taxonomic note on the species were also provided.

DNA Barcoding of Scolelepis (Parascolelepis) papillosa (Annelida, Spionidae) in Korea, with Additional Taxonomic Notes

  • Lee, Geon Hyeok;Lee, Ha-Eun;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • 제37권4호
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    • pp.349-353
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    • 2021
  • 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.

Biological roles and an evolutionary sketch of the GRF-GIF transcriptional complex in plants

  • Kim, Jeong Hoe
    • BMB Reports
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    • 제52권4호
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    • pp.227-238
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    • 2019
  • GROWTH-REGULATING FACTORs (GRFs) are sequence-specific DNA-binding transcription factors that regulate various aspects of plant growth and development. GRF proteins interact with a transcription cofactor, GRF-INTERACTING FACTOR (GIF), to form a functional transcriptional complex. For its activities, the GRF-GIF duo requires the SWITCH2/SUCROSE NONFERMENTING2 chromatin remodeling complex. One of the most conspicuous roles of the duo is conferring the meristematic potential on the proliferative and formative cells during organogenesis. GRF expression is post-transcriptionally down-regulated by microRNA396 (miR396), thus constructing the GRF-GIF-miR396 module and fine-tuning the duo's action. Since the last comprehensive review articles were published over three years ago, many studies have added further insight into its action and elucidated new biological roles. The current review highlights recent advances in our understanding of how the GRF-GIF-miR396 module regulates plant growth and development. In addition, I revise the previous view on the evolutionary origin of the GRF gene family.

Re-description of Sea Spider Cilunculus armatus (Pycnogonida: Ammotheidae) from Korea

  • Lee, Damin;Park, Jin-ho;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • 제36권4호
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    • pp.330-335
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    • 2020
  • The sea spider genus Cilunculus Loman, 1908 comprises 33 species having short chelifores, separate lateral processes, and a hood structure on the cephalic segment. A pycnogonid species, Cilunculus armatus(Böhm, 1879), was collected from Baekdo Island and Chujado Island, Korea. This species is characterized by having a hood structure on the cephalic segment, separate lateral processes, a low ocular tubercle without eyes, and 3-segmented chelifores. In the examined material, chela shape, arrangement of compound spines on strigilis, and number of heel spines at propodus were different from the previous literatures. Here, we examined C. armatus collected in Korean waters and provided illustrations and pictures in detail.

New Report of Scolelepis (Scolelepis) lingulata (Annelida: Spionidae), with Notes on the Genus Scolelepis in Korean Fauna

  • Lee, Geon Hyeok;Choi, Hyun Ki;Yoon, Seong Myeong;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • 제38권3호
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    • pp.122-129
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    • 2022
  • 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.

First Record of Magelona parochilis (Annelida: Magelonidae) in South Korea

  • Lee, Ha-Eun;Lee, Geon Hyeok;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • 제38권4호
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    • pp.149-156
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    • 2022
  • The magelonid polychaete Magelona parochilis Zhou and Mortimer, 2013 is newly reported from South Korea. The Korean specimens correspond well to the original description of M. parochilis in having prostomium without horn, mucronate chaetae on chaetiger 9, superior dorsal lobes on chaetigers 1-8, ventral neuropodial lobes on chaetiger 9, smooth edged thoracic notopodial lamellae, and unidirectional tridentate hooded hooks on abdominal chaetigers. Partial sequences of cytochrome c oxidase I (COI) and 16S ribosomal DNA (16S rDNA) of the species were determined from Korean specimens. The detailed description and illustrations are provided with partial sequences of COI and 16S rDNA as molecular markers for species identification.

New Report of Scolelepis geniculata (Annelida: Spionidae) in Korean Fauna

  • Geon Hyeok Lee;Taeseo Park
    • Animal Systematics, Evolution and Diversity
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    • 제39권4호
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    • pp.304-308
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    • 2023
  • 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.

Korean Species of the Genus Parornix (Lepidoptera, Gracillariidae)

  • Da-Som Kim;Jae-In Oh;Ji-Young Lee;Bong-Kyu Byun
    • Animal Systematics, Evolution and Diversity
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    • 제40권2호
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    • pp.124-129
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    • 2024
  • The genus Parornix Spuler, 1910 is a small group within the subfamily Parornichinae belonging to the family Gracillariidae in Korea. The subfamily Parornichinae was recently established as a taxonomic category by Kawahara & Ohshima, 2017, based on the largest dataset in a phylogenetic study. In this study, we reviewed the Korean species of the genus Parornix. In total, 5 species were recognized from Korea. Among them, one species, Parornix loganella (Stainton, 1848) is recorded for the first time from Korea. Descriptions and illustrations of the adults and genitalia of them are provided herein.

Three Seed Beetles (Coleoptera: Chrysomelidae: Bruchinae) New to South Korea, with DNA Barcoding Data

  • Hee-Wook Cho;Haechul Park;Soojeong Ahn;Oe Jung Kim;Kang-Rae Kim
    • Animal Systematics, Evolution and Diversity
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    • 제40권1호
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    • pp.108-111
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    • 2024
  • Three species of seed beetles, Acanthoscelides pallidipennis (Motschulsky, 1874), Bruchidius terrenus (Sharp, 1886), and Kytorhinus senilis Solsky, 1869, from South Korea are reported for the first time. These three species can be morphologically distinguished from other Korean bruchid species by the distinctive color pattern of the elytra, presence of subapical spines on hind femur, and exposed last three tergites of abdomen, respectively. In this study, partial sequences of mitochondrial cytochrome c oxidase subunit I from Korean specimens of these species were generated. In addition, host plants, distribution maps, and photographs of the dorsal habitus and live specimens of each species are also included.