• Animal Systematics, Evolution and Diversity
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• 제23권1호
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• pp.75-85
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• 2007

A taxonomic study was carried out on the Perinereis nuntia species group of Korea by using morphological and molecular data (mitochondrial cytochrome c oxidase subunit I: mtCOI). Two species, P. mictodonta (Marenzeller, 1879) and P. wilsoni (Glasby and Hsieh, 2006), are recognized and redescribed. In this study, mtCOI gene showed a good resolution as molecular marker for species identification of the P. nuntia species group of Korea.

• 생명과학회지
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• 제14권1호
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• pp.57-60
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• 2004

육종재료를 얻기 위하여 부산ㆍ경남지역에서 수집된 우리나라 재래종 옥수수 49계통에 대하여 주성분분두법을 이용하여 계통간 거리를 구하였고, 이를 이용하여 계통분류를 실시하였던 바 다음과 같은 결과를 얻었다. 계통간 거리에 의해 49계통은 4개의 계통군으로 분류되었고, 계통군 I 에는 11계통, 계통군 II에는 20계통, 계통군 III에 는 14계통, 그리고 계통군 IV에는 4계통이 속하였다. 계통군 I은 조생, 단간, 소수, 소분얼형의 계통들이었고, 계통군 II는 조생, 장간, 대수, 다수, 소분얼형의 계통이었고, 계통군 III은 만생, 단간, 소수, 다분얼형 의 계통이었고, 계통군 IV는 중생, 장간, 대수, 다수, 다분얼형의 계통들이었다.

• Animal cells and systems
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• 제11권2호
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• pp.255-263
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• 2007

A taxonomic study on the genus Tropocyclops has been accomplished as a part of the series of studies on the freshwater cyclopoid copepods in South Korea. As a result, the Tropocyclops prasinus, hitherto known from Korea in many reports and papers, turns out to be a species complex of three sibling species: T. prasinus (Fischer, 1860), T. ishidai n. sp., and T. setulifer n. sp. This paper deals with description of two of these new species with taxonomic accounts on their inter- or intraspecific morphological discrepancies.

• 한국패류학회지
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• 제10권1호
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• pp.19-26
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• 1994

Eight species of the family Bithyniidae, Bithynia tentaculata, B. leachi, B. siaminsis, B manchourica, B misella, B. kiusiuensis, Gabbia australis and a Bithynia wp. collected from Nepal, were studied for their relationship between species. Total 20 characters were employed for the principal component analysis(PCA) and taxonomic distance. G. misella and B. kiusiuensis were closely related and similar to G. australis. B. manchourica, B. tentaculata and B. siamensis relatively closed group, and taxonomic distance of B. leachi was far from the other species.

• The Plant Pathology Journal
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• 제26권1호
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• pp.83-89
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• 2010

Taxonomic position of 46 Korean isolates of Rhizoctonia solani which were classified into nine intraspecific groups by anastomosis and cultural characteristics was analyzed by randomly amplified polymorphic DNA (RAPD) and sequence analyses of the internal transcribed spacer (ITS) regions of ribosomal DNA. All the isolates within each group showed highly similar band patterns in RAPD. The ITS regions of the isolates within the same groups showed a high level of sequence similarity above 96.0% whereas similarities among different groups were below 94.4%. When compared with several reference strains of R. solani from foreign countries, all the Korean isolates were clustered with the foreign isolates belonging to the same groups in the phylogenetic tree. All six Korean strains of AG-4 were identified as HG-1 out of 3 subgroup of AG-4. We discussed taxonomic position of Korean isolates of R. solani and showed that sequence analysis with ITS regions could be a rapid and useful method for identification of intraspecific group of R. solani.

• The Plant Pathology Journal
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• 제16권2호
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• pp.98-104
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• 2000

For the taxonomic evaluaition, 15 strains of the genus Pectobacterium and Erwinia were analyzed for 16S-23S rDNA intergenic spacer regions (ISRs). These species contained two types of ISRs, large and small ISRs. Large ISRs were on the range of 474-569 bp size, and coding transfer $\textrm{RNA}^{11e}$($\textrm{tRNA}^{11e}$) and $\textrm{tRNA}^{Ala}$. Small ISRs were 354-459 bp in length and coding $\textrm{tRNA}^{Glu}$. The sequence variations of two ISRs among species and strains were very high as compared with 16S rRNA gene sequences. By phylogenetic trees on the basis of two ISRs, Pectobacterium ere differentiated into P. carotovorum-P. cactiaidum group and P. chrysanthemi group. However, the taxonomic position of E. cypripedii and E. rhapontici, which were not clear on taxonomic delineation between Pectobacterium and Erwinia, were not clearly resolved on the basis of ISRs.

• Journal of Ecology and Environment
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• 제48권2호
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• pp.144-151
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• 2024

Background: This study focused on the diet of Clithon retropictum, level II endangered species in Korea. Since the development of brackish water zones has led to a decline in the population of this species, to obtain information on the ecology of C. retropictum required for its conservation and restoration. To investigate the actual preys of C. retropictum in south coast of Korea, we conducted high-throughput sequencing and metabarcoding techniques to extract DNA from gut contents and periphyton in their habitats. Results: Total 118 taxonomic groups were detected from periphyton samples. 116 were Chromista and Cyanobacteria dominated in the most samples. In gut contents samples, 98 taxonomic groups were detected. Similar to the results of periphyton, 96 were Chromista and Cyanobacteria dominated in the most samples. In the principal component analysis based on the presence/absence of taxonomic groups, gut content composition showed more clustered patterns corresponding to their habitats. Bryophyta was the most crucial taxonomic group explaining the difference between periphyton and gut contents compositions of C. retropictum. Conclusions: Our finding suggests that C. retropictum may not randomly consume epilithic algae but instead, likely to supplement their diet with Bryophyta.

• Parasites, Hosts and Diseases
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• 제34권4호
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• pp.259-266
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• 1996

형태학적 제3군 가시아메바의 taxonomic validity는 아직 확실하지 않다. 이번 연구에서 제3군에 속하는 6종의 가시 아메바 즉 A. culbertsoni A. healyi A. palestinensis. A. pustulosa, A. royreba 및 A. lenticulata의 type strain들의 동위효소. 미토콘트리아 DNA 및 small subunit(ssu) rDNA의 Restriction Fragment Length Polymorphism(RFLP) 양상을 비교하여 이들의 taxonomic validity를 검토하였다. 미토콘드리아 DNA의 RFLP 양상은 분리주간에 서로 심한 차이를 보였다. A. palestinensis와 A. pustulosc는 거의 동일한 rDNA RFLP(추정 염기 치환율 2.6%) 및 동위효소의 양상을 보여 A. palestinensis와 A. pustulosc는 같은 종으로 판단되었다. 그외의 종들은 서로 아주 다양한 rDNA RFLP 및 동위효소의 양상을 나타내어 독립종으로 인정되었다.

• Animal Systematics, Evolution and Diversity
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• 제40권2호
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• pp.150-156
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• 2024

A taxonomic review of the Korean Chrysis smaragdula group (Hymenoptera: Chrysididae), characterized by the six apical teeth (including lateral angles or obtuse protuberances) of metasomal tergum 3, is presented. Three species, namely Chrysis daphne, C. equestris, C. principalis, are included herein. Of these, C. equestreis is recorded from Korea for the first time. Chrysis daphne is a corrected name for the previous Korean records under the name of C. fasciata. A determination key to species complemented with illustrations is made. Additional diagnoses including color variations and descriptions of male genitalia (unavailable in C. equestris) based on Korean materials are also provided.

• Animal Systematics, Evolution and Diversity
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• 제21권2호
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• pp.137-156
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• 2005

한국 담수산 검물벼룩류에 대한 분류학적 연구의 일환으로, 톱니꼬리검물벼룩(Eucyclops serrulatus) 복합군에 속하는 6종을 보고한다: 톱니꼬리검물벼룩 (E. serrulatus), 예쁜톱니꼬리검물벼룩(E. roseus), 큰가시톱니꼬리검물벼룩(E. speratus), 태평톱니꼬리검물벼룩(E. Pacificus), 대머리톱니꼬리검물벼룩(E. ohtakai), 대마톱니꼬리검물벼룩(E. tsushimensis). 한국에서는 지금까지 다수의 보고서와 논문을 통해 톱니꼬리검물벼룩(E. serrulatus) 1종으로 기록되어 있었으나, 본 연구를 통해 이것이 6종의 자매종으로 구성된 복합군임을 확인하였다. 자매종간 분류학적 미세 형질을 서로 비교하였고, 종내 변이성에 대하여도 고찰하였다. 현재까지 극동아시아에서 기록된 톱니꼬리검물벼룩 복합군의 종 검색표를 작성하였다.