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Brief morphological description of stichotrichid ciliates (Ciliophora: Stichotrichia) from Korea
김강산,민기식 국립생물자원관 2018 Journal of species research Vol.7 No.4
Ten stichotrichid ciliates were identified from six environmental samples, consisting of one freshwater, two seawater, and three soil samples. Morphological assessments were performed based on observations of both living and stained specimens. These species were assigned to two orders, three families, and nine genera, and we provide photographs and brief descriptions and remarks for each species: Parabirojimia similis Hu et al., 2002, Arcuseries warreni (Song & Wilbert, 1997) Huang et al., 2014, Gonostomum lajacola Foissner, 2016, Paragonostomoides xianicum Wang et al., 2017, Australocirrus oscitans Blatterer & Foissner, 1988, Monomicrocaryon crassicirratum Foissner, 2016, Monomicrocaryon euglenivorum fimbricirratum Foissner, 2016, Notohymena rubescens Blatterer & Foissner, 1988, Sterkiella multicirrata Li et al., 2018, Stylonychia ammermanni ammermanni Gupta et al., 2001.
Record of two soil ciliates (Ciliophora: Colpodea: Colpoda) from Korea
김강산,안동하,민기식 국립생물자원관 2016 Journal of species research Vol.5 No.3
We collected two unrecorded Colpoda species - C. cucullus Müller, 1773 and C. inflata (Stokes, 1885) Kahl, 1931 from Jeju-do Province (Sarabong Park, 33°31′N 126°32′E) in November, 2014. We described these species based on observations of live and impregnated (protargol and silver nitrate impregnation) specimens.
김강산,김태식,손주성,Van Dam Lai,박정은,왕승준,정원화,모인필 대한수의학회 2019 Journal of Veterinary Science Vol.20 No.5
Korea is located within the East Asian-Australian flyway of wild migratory birds duringthe fall and winter seasons. Consequently, the likelihood of introduction of numeroussubtypes and pathotypes of the Avian influenza (AI) virus to Korea has been thought to bevery high. In the current study, we surveyed wild bird feces for the presence of AI virus thathad been introduced to Korea between September 2017 and February 2018. To identify andcharacterize the AI virus, we employed commonly used methods, namely, virus isolation (VI)via egg inoculation, real-time reverse transcription-polymerase chain reaction (rRT-PCR),conventional RT-PCR (cRT-PCR) and a newly developed next generation sequencing (NGS)approach. In this study, 124 out of 11,145 fresh samples of wild migratory birds tested wererRT-PCR positive; only 52.0% of VI positive samples were determined as positive by rRT-PCRfrom fecal supernatant. Fifty AI virus specimens were isolated from fresh fecal samples andtyped. The cRT-PCR subtyping results mostly coincided with the NGS results, although NGSdetected the presence of 11 HA genes and four NA genes that were not detected by cRTPCR. NGS analysis confirmed that 12% of the identified viruses were mixed-subtypes whichwere not detected by cRT-PCR. Prevention of the occurrence of AI virus requires a workflowfor rapid and accurate virus detection and verification. However, conventional methodsof detection have some limitations. Therefore, different methods should be combinedfor optimal surveillance, and further studies are needed in aspect of the introduction andapplication of new methods such as NGS.
Morhological record of three soil ciliates (Ciliophora) from Korea
김강산,민기식 국립생물자원관 2017 Journal of species research Vol.0 No.-
We collected three soil ciliates, Colpoda maupasi Enriquez, 1908, Tillina minima Alekperov, 1985, and Gonostomum singhii Kamra et al., 2008, in Korea. The two genera, Colpoda and Tillina, belong to the class Colpodea, and the other, Gonostomum belongs to the class Spirotrichea. We describe these species based on observations of live and protargol-impregnated specimens.
New Record of Three Colpodean Ciliates (Ciliophora: Colpodea) from Korea
김강산,민기식 한국환경생물학회 2015 환경생물 : 환경생물학회지 Vol.33 No.4
We discovered three soil ciliates of the class Colpodea-Colpoda henneguyi Fabre- Domergue, 1889; C. lucida Greeff, 1888; and Bursaria truncatella Müller, 1773 from Obong-ri, Ayajin-ri and Elwang-ri (Korea), respectively. Colpoda henneguyi had the following features: often wider preorally than postorally, size in vivo 60-80 μm×50-70 μm; extrusomes indistinct in vivo, cylindroid approximately 1 μm long; notches caused by deep diagonal groove; yellowish globules on the cortex of the cell; 10-12 postoral kineties; silverline system aspera-type. Colpoda lucida exhibited the following features: broadly reniform, size in vivo 70-90 μm×50-70 μm; conspicuous extrusomes, 3.5-5 μm long in vivo, cylindroid to fusiform; 13-16 postoral kineties; silverline system cucullus-type. Bursaria truncatella had the following features: bursiform, size in vivo 300-470 μm×120-260 μm; macronucleus coiled with highly variable shapes, 600-1100 μm×30-40 μm long in vivo; micronuclei 16-25 in number, approximately 4 μm in diameter; extrusomes cylindroid, 3-4 μm long in vivo. This is the first report of colpodean ciliates from Korea, and we describe these species based on observations of live and impregnated (protargol and silver nitrate impregnation) specimens.