- KOREAN
- E-ISSN2713-8615
- KCI
Vol.14 No.3
Abstract
Here we describe indigenous prokaryotic species in Korea, a total of 47 bacterial strains were isolated from freshwater and soil from the Republic of Korea. From the high 16S rRNA gene sequence similarity (>98.7%) and formation of a robust phylogenetic clade with the closest species, it was determined that each strain belonged to predefined bacterial species. There is no official report that these 47 species belonged to 4 phyla, 8 classes, 20 orders, 27 families, and 38 genera, which were assigned to Sediminibacterium and Flavobacterium of the phylum Bacteroidota; Streptomyces, Solirubrobacter, Nonomuraea, Nocardioides, Nocardia, Mycobacterium, Micromonospora, Micrococcus, Microbacterium, Catellatospora, and Arthrobacter of the phylum Actinomycetota; Vogesella, Tabrizicola, Stenotrophomonas, Sphingorhabdus, Sphingomonas, Sphingobium, Pseudomonas, Piscinibacter, Phenylobacterium, Novosphingobium, Noviherbaspirillum, Neotabrizicola, Microvirga, Mesorhizobium, Lysobacter, Ideonella, Hydrogenophaga, Enterobacter, and Chakrabartia of the phylum Pseudomonadota; Trichococcus, Paenibacillus, Neobacillus, Jeotgalibacillus, Chryseomicrobium, and Bacillus of the phylum Bacillota. Gram-staining results, colony and cell morphologies, basic biochemical characteristics, isolation sources, and strain IDs are also described in the species description section.
Abstract
A newly recorded species, Leptocotis tenuirostris (Claus, 1871), belonging to the family Oxycephalidae Spence Bate, 1863, was collected during a pelagic zooplankton survey from off Jeju Island, Korea. This monotypic genus is characterized by a well-developed rostrum in both sexes and lanceolate rami of all uropods. Leptocotis is morphologically similar to other genera in the family, however, Leptocotis can be distinguished by the combined length of urosomites 2 and 3 and length of outer ramus on uropod 1. To date, only three genera of the family Oxycephalidae, Oxycephalus H. Milne Edwards, 1830, Rhabdosoma White, 1847, and Streetsia Stebbing, 1888, have been recorded in Korea, making this the first record of the genus Leptocotis in Korean waters. Additionally, a key to species of the family Oxycephalidae from Korean waters is provided.
Abstract
Three known species of the free-living nematodes were gathered from marine sediments of sublittoral zone in Korea and described and illustrated. Belbolla zhangi Guo & Warwick, 2001, which was originally described from the Bohai Sea, China, is recorded from the East Sea, Korea for the first time; only in the ratio a and cʹ (33-39 vs. 29-35, 3.5-4.5 vs. 2.9-3.7). Specimens of Halalaimus gracilis de Man, 1888 from East Sea, Korea largely agree with the original description of de Man (1888) of nematodes from North Sea and the redescription of Platt & Warwick (1983) of nematodes from the England, except for slightly longer body width (20-24 μm vs. 16-26 μm) and the body length (1,120-1,315 μm vs. 800-1,300 μm). Oxystomina elongata (Bütschli, 1874) Filipjev, 1921; apart from few minor morphological differences between the specimens from North Sea (Lorenzen, 1965) and from England (Warwick et al., 1998); in the value of “de Man ratio b which was higher in specimens from North Sea and England (b=6.5-7.7 vs. 4.4-4.5) and slight difference in the body width (40-50 μm vs. 32-38 μm). The present study on unrecorded species improves the understanding of nematodes species diversity in Korean waters.
Abstract
This study summarizes the distribution and taxonomic description about 26 taxa of the freshwater algae recorded for the first time in Korea collected from several swamps, reservoir and mountainous wetlands in the South Korea from 2014 to 2024. These algae classified into 3 taxa of Cyanophyceae, 1 taxon of Chlorophyceae, 13 taxa of Conjugatophyceae, 4 taxa of Euglenophyceae, 1 taxa of Raphidophyceae, 1 taxon of Dinophyceae, 2 taxon of Chrysophyceae and 1 taxon of Xanthophyceae. Among these, 3 genera of Merotricha of Raphidophyceae, Ammatoidea of Cyanophyceae and Mischococcus of Xanthophyceae were newly recorded in the Korean freshwater algal flora.
Abstract
In the process of investigating the fly family Tephritidae in Korea, we report the following ten species of the tribe Trypetini new to this country: Anomoia apicalis Ito, 1984, Chetostoma esakii (Ito, 1960), comb. nov., Chetostoma flexuosum (Zia, 1938), comb. nov., Chetostoma melliculum Richter, 1965, Chenacidiella purpureiseta (Chen, 1948), Dryadodacryma albicostale Ito, 1984, Hemileoides theodori Rohdendorf, 1955, Ihekaze diversa (Ito, 1952), Morinowotome itoi Korneyev, 1998, and Stemonocera corruca (Hering, 1937). Among the eight genera treated here, Chenacidiella Shiraki, 1968, Dryadodacryma Ito, 1984, Ihekaze Ito, 1984, and Hemileoides Rohdendorf, 1955 are recorded for the first time in Korea. As a result, 67 genera and 116 species are recognized for the Korean tephritid fauna. We provided a new Korean name, synonymy, distribution, taxonomic diagnosis, and color photographs for each newly recognized Korean species. When possible, we mentioned their biology and discussed intraspecific variability, sexual dimorphism, and systematic status. In addition, we acknowledge here the genus Sinacidia Chen, 1948, as a junior synonym of the genus Chetostoma Rondani, 1856. On the other hand, we here resurrect the genera Dryadodacryma and Hemileoides from the synonymy of Hemilea Loew, 1862, and the genus Ihekaze from the synonymy of Acidiella Hendel, 1914. We also recognize Japanese Hemileoides continuum (Ito, 1984) as a comb. nov. from the genus Dryadodacryma.
Abstract
In this study, a total of 14 bacterial strains belonging to the phyla Bacteroidota, Acidobacteriota and Verrucomicrobiota isolated in 2023 are reported as unrecorded species in Korea. Among 14 bacterial strains, 12 strains were assigned to the phylum Bacteroidota, including 5 species belonging to the family Flavobacteriaceae, 3 species to the family Weeksellaceae, 2 species to the family Cyclobacteriaceae and 1 species each to the families Prolixibacteraceae and Sphingobacteriaceae. At genus level, Flavobacterium (5 species) was the most abundant genus, which was then followed by Chryseobacterium (3 species) and Algoriphagus (2 species). Single species were obtained for the genera Sunxiuqinia and Mucilaginibacter. In addition, one isolate assigned to the phylum Acidobacteriota belonged to the genus Edaphobacter of the family Acidobacteriaceae, and the other assigned to the phylum Verrucomicrobiota belonged to the genus Verrucomicrobium of the family Verrucomicrobiaceae.
Abstract
A total of 49 unrecorded bacterial species were isolated from freshwater and soil samples collected in 2024 from wetlands in Korea. The isolated strains were classified into 5 phyla, 11 classes, 22 orders, 30 families, and 37 genera. Among the isolates, 3 species belong to the phylum Actinomycetota, 11 species belong to the phylum Bacillota, 8 species belong to the phylum Bacteroidota, 27 species belong to the phylum Pseudomonadota. Phylogenetic analyses based on 16S rRNA gene sequences revealed that each strain clustered with its closest reported strain, showing higher than 98.7%. Detailed information on the 49 species, including isolation sources, phylogenetic positions, Gram-staining results, colony and cell morphology, biochemical characteristics, and strain names, are provided in the species descriptions.
Abstract
The mature galled flower buds of the silver vine Actinidia polygama (Actinidiaceae) are used in traditional oriental medicine in Korea. In Japan, a similar gall maker of A. polygama is Pseudasphondylia matatabi. However, few taxonomic studies exist on gall makers in Korea. Comprehensive morphological and molecular analyses confirmed that the Korean specimens were identical to P. matatabi from Japan. Morphological characteristics, particularly the male genital structure and pupal horn morphology, matched the original description from Japan. Molecular phylogenetic analysis of the DNA barcode region revealed that the Korean and Japanese populations formed a monophyletic clade distinctly separated from other congeners, including the recently described P. kiwiphila from Taiwan, which induces galls in A. rufa. Life history observations showed that adult emergence occurred from September to October, when no suitable oviposition sites were available for the deciduous host plant, suggesting the existence of an unknown winter host plant.
Abstract
This study aims to discover and document amphipods from Korea, contributing to the clarification of the taxonomy of Korean amphipod species. As part of this effort, a newly recorded species, Seba chiltoni Moore, 1987, belonging to the family Sebidae Walker, 1907, was collected from the southern subtidal area of Jeju-do, Korea and is reported herein. The family Sebidae is notable for comprising only a single genus, Seba Spence Bate, 1862. In this paper, the morphological characteristics of the genus Seba and the newly recorded species Seba chiltoni are provided. The species is described and fully illustrated in the present study. This is the first record of the family Sebidae from Korea.
Abstract
To isolate indigenous lactic acid bacteria (LAB) strains from the environment, multiple samples including freshwater, freshwater sediment, freshwater aquatic plants, and plants around freshwater ecosystems were collected in Korea. Bacterial isolates were obtained using the conventional culture method with MRS media supplemented with cyclohexamide and sodium azide and subjected to 16S rRNA gene sequencing to identify previously unrecorded bacterial species in Korea. Analysis of the 16S rRNA gene sequences indicated that seven isolates exhibited more than 98.65% sequence similarity with validly published bacterial type strains, which had not previously been officially reported in Korea. These isolates were classified within the Bacillota phylum as species Ligilactobacillus acidipiscis, Pediococcus ethanolidurans, Pediococcus inopinatus, Weissella muntiaci, Fructobacillus fructosus, Vagococcus penaei, and Paucilactobacillus nenjiangensis. In this study, we provide details on the seven newly discovered LAB species, including their phylogenetic positions, as well as their morphological, physiological, and biochemical characteristics.
Abstract
The National Species List of Korea was established to reinforce national sovereignty over biological resources, supporting compliance with international agreements such as the Nagoya Protocol, the Convention on Biological Diversity and standardized species names. As of 2024, the list includes 61,230 wild species in inhabiting the Korean Peninsula, reflecting the taxonomic identification and classification progress since its initial publication in 1996. The greatest increases in the number of species added to the list are among insects, invertebrates, fungi, and algae. Annual updates are made according to international nomenclatural codes, incorporating new species discoveries, synonym revisions, and taxonomic refinements. In 2024, 1,220 species are added, including synonymization and species re-identification. Since 2023, over 40 species originating from tropical regions (i.e., type locality) have been added each year, potentially indicating biodiversity shifts caused by climate change. Despite a recent decline in species discovery rates, national efforts such as the Korean Indigenous Species Investigation Project continue to play a key role in understanding the biodiversity of Korea and contributing to conservation policies. The full list is updated annually and is publicly accessible via the CBD-CHM Korea portal (https://www.kbr.go.kr).