• Tuberculosis and Respiratory Diseases
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• 제79권2호
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• pp.74-84
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• 2016

Nontuberculous mycobacteria (NTM) are emerging pathogens that affect both immunocompromised and immunocompetent patients. The incidence and prevalence of NTM lung disease are increasing worldwide and rapidly becoming a major public health problem. For the diagnosis of NTM lung disease, patients suspected to have NTM lung disease are required to meet all clinical and microbiologic criteria. The development of molecular methods allows the characterization of new species and NTM identification at a subspecies level. Even after the identification of NTM species from respiratory specimens, clinicians should consider the clinical significance of such findings. Besides the limited options, treatment is lengthy and varies by species, and therefore a challenge. Treatment may be complicated by potential toxicity with discouraging outcomes. The decision to start treatment for NTM lung disease is not easy and requires careful individualized analysis of risks and benefits. Clinicians should be alert to those unique aspects of NTM lung disease concerning diagnosis with advanced molecular methods and treatment with limited options. Current recommendations and recent advances for diagnosis and treatment of NTM lung disease are summarized in this article.

• 수산해양기술연구
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• 제57권3호
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• pp.264-269
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• 2021

A single postlarva (9.72 mm in standard length) specimen of Crossorhombus azureus (Alcock, 1889) belonging to the family Bothidae, was collected using a bongo net from the southern sea of Korea on December 10, 2019. This species is characterized by having spines on post basipterygial processes. It has two eyes located at the opposite side in head, which accordingly belongs to pre-metamorphosis stage. Melanophores are distributed on the dorsal and anal fin base on the right side (blind side), which is regarded as a useful identification key distinguishing C. azureus from congeneric species in their postlarval stage. A molecular analysis based on mitochondrial DNA COI sequences showed that our specimen was closely matched to adult C. azureus (K2P distance = 0.017). As there is no Korean name for the genus Crossorhombus in spite of presence of Crossorhombus kobensis and its Korean name "Go-be-dung-geul-neob-chi" in Korea, we proposed a new Korean name "Dung-geul-neob-chi-sog" for the genus Crossorhombus and "Pa-lang-dung-geul-neob-chi" for the species C. azureus.

• The Plant Pathology Journal
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• 제21권1호
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• pp.83-85
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• 2005

Ditylenchus acris was isolated from diseased strawberry plants. Frequently, D. acris and Aphelenchoides fragariae occur together in a strawberry plant. Both species appeared very similar in the shape, length, swimming behavior and causing symptoms, and difficult to distinguish them by a stereomicroscope. But they were easily distinguished under a compound microscope especially by their tail shape, median bulb, vulva position, and bursa.

• 생태와환경
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• 제56권3호
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• pp.242-249
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• 2023

The aquarium pet trade is a source of potentially invasive crayfish species, which can be subsequently intentionally or unintentionally introduced into new environments. There were 34 species of freshwater crayfish imported into Korea for ornamental purposes. Starting with 1 species in 2008, it shows a trend of continuous increase every year with the maximum of 25 species in 2020. The number of freshwater crayfish imported into Korea for ornamental purposes was 1,172,159, with an annual average of 78,144 being imported. The population also recorded a record high in 2017 with a 38% increase in population imports compared to the previous year. Among the 34 pet crayfish imported into Korea, four species classified as high-risk and managed in the US and Europe were American crayfish (Procambarus clarkii), Cherax quadricarinatus, Cherax cainii, and Cherax destructor. In addition to American crayfish (P. clarkii), 3 types of high-risk invasive crayfish are designated as legally managed species by conducting an ecological risk assessment, raising awareness among importers, retailers and consumers through awareness-raising education on freshwater crayfish, and measures for route management such as species identification and improvement of labeling methods are needed.

• Animal Systematics, Evolution and Diversity
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• 제33권1호
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• pp.60-64
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• 2017

The family Psychidae is a small group consisting of 241 genera and 1,350 species in the world. The genus Bacotia, belonging to the family Psychidae, what was established by Tutt based on the type species, Fumea sepium Speyer and Speyer, 1846. In this study, we aimed to record lichen-feeding bagworms in Korea. The genus Bacotia Tutt is reported for the first time from Korea with one newly recorded species, Bacotia sakabei Seino, 1981. All available information, including the collecting localities, host plants, illustrations of adults and genitalia are presented. A DNA barcode for precise identification of the species is also described.

• 한국응용곤충학회지
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• 제55권4호
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• pp.495-499
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• 2016

전남 백운산 지역의 논실 및 한재 지점에서 2015년 5월부터 8월까지 깔데기트랩(Lindgren funnel trap)을 이용하여 배줄벌레과(Biphyllidae) 곤충을 채집하였다. 그 결과 배줄벌레속(Biphyllus) 7종이 채집되었고, 그 중 3종인 둥근배줄벌레(B. aequalis (Reitter)), 담갈무늬배줄벌레(B. flexuosus (Reitter)), 애배줄벌레(B. kuzurius Sasaji)가 국내에서 처음 기록되는 종으로 확인되었으며, 이들을 동정하기 위한 검색표와 진단형질들을 도식하였다.

• 한국응용곤충학회지
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• 제54권3호
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• pp.281-284
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• 2015

각진장미흰깍지벌레, 참식나무흰깍지벌레와 후박나무굴깍지벌레로부터 채집된 Encarsia explorata (Silvestri) [후박굴깍지좀벌 (신칭)] 및 담배가루이로부터 채집된 Encarsia lutea (Masi) [가루이좀벌 (신칭)] 을 국내분포로 처음 보고한다. 또한 이들 종들의 검색표, 식별형질, 사진자료, 분포 및 기주 정보도 함께 제공하였다.

• Journal of Species Research
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• 제13권3호
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• pp.288-292
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• 2024

In the course of our survey of microbial diversity, a total of seven basidiomycetous yeast strains were isolated from flowers sampled across the four provinces of the Republic of Korea, of which two strains were identified as an unrecorded species. Comparative analysis was conducted for identification of strains using the D1/D2 region of the large subunit(LSU) rRNA gene sequences, observation of cell morphologies, and carbon assimilation tests. Seven strains were classified within the phylum Basidiomycota. Two unrecorded strains, JRP1-10 (KACC 410703) and KC-1 (KACC 410704), were identified as Vishniacozyma pseudocarnescens, belonging to the family Bulleribasidiaceae, order Tremellales, class Tremellomycetes. Two strains had ellipsoidal-shaped and monopolar budding cells and smooth and cream-colored colonies after cultivation at 25℃ for 3 days. Here, we present the morphological and biochemical characteristics of the unrecorded yeast species, Vishniacozyma pseudocarnescens, in the Republic of Korea.

• 한국치위생학회지
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• 제18권5호
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• pp.843-852
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• 2018

Objectives: The study aimed to isolate the abundant bacteria in dental caries in children and to investigate the bacterial species involved in addition to those that have been previously reported. Methods: The specimens were collected from the supragingival plaques of each dental caries area, pit and fissure caries, deep dentinal caries, smooth surface caries, and dental caries, and from healthy subjects in the control group. Bacteria were cultured from these specimens, DNA was extracted from the isolated bacteria, and the 16S rRNA gene sequences were analyzed and identified. Results: Based on the results of the 16S rRNA gene sequence analysis for the 90 strains of dominant bacteria from the 45 specimens, 5, 7, 8, 7, and 13 species were identified from the supragingival plaques from healthy teeth, pit and fissure caries, deep dentinal caries, smooth surface caries, and dental caries, respectively. In healthy teeth, Actinomyces naeslundii dominated. Corynebacterium durum, Ralstonia pickettii, and Streptococcus intermedius showed equal distribution. The dominant bacterial species in dental caries, S. sanguinis, showed the greatest difference in prevalence in pit and fissure caries. In deep dentinal caries, S. mutans and Lactobacillus rhamnosus were dominant; in smooth surface caries, S. mutans and S. sanguinis were dominant; and in the supragingival plaques of dental caries, S. sanguinis and S. mutans were dominant. Conclusions: The bacterial species isolated from dental caries encompassed four phyla, eight genera, and 22 species. In addition, the SS1-2 strain, belonging to the genus Neisseria, was identified as a new species from among the isolated strains.

• 식물분류학회지
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• 제46권2호
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• pp.267-271
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• 2016

한국 미기록종인 고창고랭이(Schoenoplectiella ${\times}$uzenensis (Ohwi ex T. Koyama) Hayasaka)를 전라북도 고창군 고수면의 저수지에서 발견하였다. 고창고랭이는 짧게 기는 지하경이 있고 소수가 1-3개가 달리는데 반하여, 송이고랭이(S. triangulata)는 지하경이 아주 짧고 줄기가 빽빽이 모여나며 소수가 5-20개가 달리고, 제주올챙이골(S. lineolata)은 지하경이 길게 발달하고 소수가 1개가 달려 뚜렷이 구별된다. 이 미기록종의 국명은 고창군에 자라기 때문에 '고창고랭이'로 하였고, 고창고랭이에 대한 기재, 도해, 칼라도판 및 근연종 사이의 차이점을 검색표와 표로 제시하였다.