• Journal of Species Research
• /
• 제12권1호
• /
• pp.90-94
• /
• 2023

The morphology and infraciliature of three newly recorded Aspidisca species in Korea, two collected from the eastern coast and one collected from Jeju Island, were investigated in vivo and after protargol impregnation. The three species are as follows: A. dentata Kahl, 1928, A. hexeris Quennerstedt, 1869, and A. polystyla Stein, 1859. The three species are characterized by having a "polystyla-arrangement" of frontoventral cirri: 1) A. dentata is characterized by having a broadly rotund body shape, a distinct peristomial spur, and a dorsal thorn; 2) A. hexeris is characterized by a broadly oval body shape, four projections along the left margin of body, and the single peristomial spur; and 3) A. polystyla has the broadly rotund body shape, transverse cirri each split into several parts (especially in vivo), and lacking of the peristomial spur. Among them, A. dentata and A. polystyla are poorly known and lack morphological description based on silver staining. In the present study, we provide a brief diagnosis, remarks, and photomicrographs.

• 한국미생물·생명공학회지
• /
• 제16권5호
• /
• pp.379-383
• /
• 1988

활성슬러지법에 의한 벤젠폐수 처리실험을 통하여 활성슬러지의 벤젠처리중에 실제 그에 관여하는 세균을 분리 동정하였다. 반응조에서 분리한 세균은 6종으로, Pseudomonas fluorescens, Enterobacter agglomerans, Enterobacter cloacae, Klebsiella oxytoca, Citrobacter freundii와 Klebsiella pneumoniae로 동정되었다. 벤젠 분해능을 측정한 결과는 P. fluorescenss가 55%를 18시간만에 처리했고, E. cloacae는 24%, K. oxytoca 는 32%, E. agglomerans는 41%의 분해능을 보였다. P. fluorescens의 증식 최적조건은 온도 25-31$^{\circ}C$와 pH 7.0으로 확인되었다. P. fluorescens가 우점종일때 나타나는 지로생물은 원생동물인 Aspidisca sp.였다. 벤젠 농도가 387mg/$\ell$일 때에는 Aspidisca sp.와 Litonotus sp.가 증식을 최대로 하였고, 벤젠 농도가 1,600mg/$\ell$에서는 Litonotus sp.와 Vorticella sp.는 거의 성장하지 않았다. Glucose 배지에서는 모두 성장율이 높았다.

• Animal Systematics, Evolution and Diversity
• /
• nspc2호
• /
• pp.67-85
• /
• 1988

저 자들은 1986년 11월 6일부터 1987년 11월 8일 사이에 서울지역 한강의 9개 지점에서 원생동물의 섬모충류 가운데서 하모류를 대상으로 채집, 배양하고 세포형태학적 방법으로 연구한 결과 4과 7종의 하모류가 동정되었다. 이 종들 가운데 Paraurostyla weissei (Stein, 1859), EuPlotes patella (O.F. Miiller, 1773), Aspidisca cicada (O.F. Muller, 1786)등 3종은 한국에서 과거의 기록이 없는 종 들이다. 지금까지 하모류에 관한 분류학적 연구가 없어 동정된 종들에 대해서는 삽화와 사진을 첨부하여 상세히 재기재 하였다. 또한 세포형태학적 형질들 가운데서 23개의 형질을 택하여 조사된 7종 간의 유사성을 수리분류학적 방법으로 분석해 본 결과 기존의 분류체계와 거의 일치하는 유집 (clustering)을 보였다.

• Journal of Species Research
• /
• 제7권2호
• /
• pp.181-186
• /
• 2018

We investigated five ciliate species from soil, estuary and marine habitats in eastern Gangwon-do Province, South Korea. Morphology was studied through observation of living specimens as well as silver preparations. The species were classified into five genera, five families, five orders and four classes. Aspidisca aculeata, Hemiurosoma similis, Litonotus alpestris, Stentor roeselii and Vorticella infusionum are first records in Korea, and among them, the genus Hemiurosoma is recorded for the first time. Here, we provide short descriptions with microphotographs of these species.

• 한국미생물·생명공학회지
• /
• 제23권3호
• /
• pp.365-371
• /
• 1995

슬러지 팽화의 원인이 되며 활성오니 공정운영상의 지표생물이 되는 사상세균과 원생동물을 동정하기 위하여 도시하수 활성오니 처리장 6개소와 산업폐수활성오니 처리장 5개소의 폭기조로부터 시료를 채취하여 현미경 경검법과 일부 생리학적 방법을 써서 미생물을 동정하였다. 가장 많이 출현하였던 사상세균은 Microthrix parvicella이었으며 다음이 type 0041, type 1701, Nocardia의 순이었다. 비록 시료수는 적었지만 이러한 출현빈도는 미국과 네덜란드에서 조사된 것과 비슷한 경향을 보였다. 사상세균의 형태는 이전의 문헌에서 보고된 것과 대체로 일치하였는데 type 1701의 경우에는 전형적인 형태에 비해 사상체(filament)의 직경이 약간 가늘었다. 이러한 사상세균들은 낮은 유기물부하 또는 낮은 DO와 관계가 있는 것들이었으므로 더 많은 조사가 이루어지면 지표생물로서의 활용이 가능할 것이다. 원생동물에 있어서는 Voricella가 가장 많이 출현하였고, 다음이 Aspidisca, Opercularia, Diffugia의 순이었다. 후생동물에 있어서는 Philodina가 유일하게 출현한 속이었다. 이러한 속들은 활성오니성 미생물로서 처리상황이 좋을때 우점적으로 나타나는 미생물이라고 알려져 있으므로 처리수의 수질과 관련하여 유추해 볼때 상당한 타당성이 인정되었다.

• Journal of Species Research
• /
• 제7권4호
• /
• pp.291-314
• /
• 2018

We collected ciliates from terrestrial and aquatic habitats in Korea. Morphology was examined based on observations of both living and stained specimens. As a result of the observations, we found 24 previously unrecorded ciliate species to Korea. The morphology of these species are briefly described here: Tracheloraphis dracontoides, Condylostoma arenarium, Aspidisca steini, Australocirrus aspoecki, Sterkiella tricirrata, Stylonychia lemnae, Wallackia bujoreani, Bakuella marina, Anteholosticha sigmoidea, Holosticha pullaster, Urostyla grandis grandis, Chaenea vorax, Enchelys gasterosteus, Phialina salinarum, Mesodinium pulex, Aegyria oliva, Bryometopus pseudochilodon, Pinacocoleps tesselatus, Urozona buetschlii, Colpidium colpoda, Campanella umbellaria, Pseudovorticella difficilis, Zoothamnium parahiketes and Z. plumula. Among these 24 ciliates, S. tricirrata and U. grandis grandis were studied based on both the morphology and the morphogenesis.

• 한국동물학회지
• /
• 제38권2호
• /
• pp.160-166
• /
• 1995

The seven hvpotrichs inhabiting the representative aquatic and terrestrial habitats of Ullung Island, Holosticho svlvotlca, Gonostom urn affine, Histriculus co uicola, H. muscomm, SDlonvchio mytilus, Aspidisca ciccadu and Euplotes m uscicolu are discovered for the first time from Ullung Island. Of these, two species of eonostomum affine (Stein, 1859) and fupfotes muscicofc Kahl, 1932 are newly recorded from Korea. The total seven species are listed and two newly recorded species from Korea are redescribed with illustrations.

• 한국미생물·생명공학회지
• /
• 제28권6호
• /
• pp.361-366
• /
• 2000

Genera and number of protozoa were investigated in the conventional activated sludge pilot plant used for the treatment of municipal sewage and pre-treated night soil-containing sewage. In both case, the predominant protozoa was ciliates and among them Vorticella was the most common. In the pilot plant where pre-treated night soil was mixed with municipal sewage, genera of free-swimming ciliates, flagellates and amoeba was higher than in those withour night soil. Correlation analysis on the quality of effluent and protozoa indicates that municipal sewage has positive correlation with protozoa. However in the pilot plan 샐 sewage contatinin pre-treated night coil soil more samples show negative correlation. Followed equations were derived by the regression analysis of BOD in both the pilot plants. In case of pilot plant A of municipal sewage, the analysis B of munici-pal and pre-treated night soil-containing sewage, the analysis of BOD was $6.731$\times$10_{-2}$ $\times$Bodo+0.306(Adjusted $R^2$=0.864). At low temperature, number of protozoa was decreased to 35% and among therm, Aspidisca was the most common genus. Therefore, protozoa can be used as indicator of quality of the effluent in sewage treatment plants.

• Journal of Species Research
• /
• 제9권4호
• /
• pp.455-461
• /
• 2020

Marine benthic ciliates were collected from four rocky intertidal pools along the eastern and southern coasts of Korea from 2012-2013. Ciliate specimens were examined by observing living and stained cells. Four ciliate species were new to Korea based on morphological characteristics as follows. (1) Aspidisca polypoda (Dujardin, 1841): small bean-shaped (ca. 30 ㎛), eight conspicuous dorsal ridge, polystyla-arrangement of frontoventral cirri; (2) Epiclintes auricularis auricularis (Claparède & Lachmann, 1858): tripartite and auriform body (ca. 300 ㎛), 46 adoral membranelles, one or two frontal and 23 transverse cirri, 12 oblique fronto-midventral rows; 59 left and 71 right marginal cirri; (3) Pseudochilodonopsis marina Song, 1991: reniform body (ca. 50 ㎛), two obliquely positioned contractile vacuoles, seven left and five right kineties, five fragmented preoral kineties; (4) Dysteria semilunaris (Gourret and Roeser, 1888): oval-shaped (ca. 30 ㎛), two longitudinally positioned contractile vacuoles, conspicuous longitudinal grooves on both plates, four or five right kineties, one short row below frontoventral kineties.

• Journal of Species Research
• /
• 제9권4호
• /
• pp.427-442
• /
• 2020

We collected indigenous Korean ciliate species from diverse aquatic and terrestrial habitats in 2018 and 2019. The morphology of these ciliates was revealed based on the observations of living cells, and protargol-impregnated and/or silver carbonate-impregnated specimens. During this study, we found 16 previously unrecorded Korean ciliate species, which are as follows: 1) class Heterotrichea - Stentor introversus; 2) class Spirotrichea - Aspidisca orthopogon, Amphisiella sinica, Epiclintes auricularis rarisetus, Apokeronopsis wrighti, Pseudokeronopsis carnea, Trachelostyla pediculiformis, Strombidium apolatum, and Varistrombidium kielum; 3) class Phyllopharyngea - Chlamydodon obliquus, Dysteria aculeata, and Hartmannula angustipilosa; 4) class Litostomatea - Paraspathidium apofuscum; and 5) class Oligohymenophorea - Frontonia angusta solea, Metanophrys sinensis, and Uronemita binucleata. Here, we provide a diagnosis for each species with a brief remark. Among them, the infraciliature of the poorly known species, Stentor introversus and Dysteria aculeata, is described for the first time. Further, we revise the Korean population of Pseudokeronopsis pararubra, which was previously misidentified as Pseudokeronopsis carnea.