• 생태와환경
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• 제38권4호통권114호
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• pp.494-502
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• 2005

녹조대발생의 원인종인 남조 Microcystis aeruginosa와 규조 Stephanodiscus hantzschii 에 대한 살조 및 섭식능을 갖는 박테리아 및 섬모충을 각각 단독 및 혼합처리하고 살조능을 비교하였다. 먼저 남조 M. aeruginosa에 대하여 살조세균 Streptomyces neyagawensis와 섬모충 Stentor roeselii를단독 및 혼합처리한 결과, 각각의 단독처리가 혼합처리보다 더 높은 살조능을 나타내는 두 생물제재의 길항적 살조효과를 나타냈다. 또한 규조 S. hantzschii 에 대해 살조능을 갖는 박테리아 P seudomonas putida와 S. roeselii를 전과 동일한 방법으로 단독 및 혼합처리하여 결과를 비교하였다. 전 실험과는 다르게 두 생물제재의 혼합처리가 단독처리보다 더 높은 살조능을 보이는 두 생물제재의 상승적 살조효과를 나타냈다. 이러한 결과들은 녹조 제어를 위한 생물제재의 적용시 유용하게 이용될 것이며, 다양한 생물제재를 이용함으로서 수중생태계의 혼란을 초l소화시킬 수 있을 것으로 사료되었다.

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

• 환경위생공학
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• 제19권2호
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• pp.23-29
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• 2004

An algicidal effect of endemic algicidal bacterium (Pseudomonas putida) and rotifer zooplankton (Brachionus calyciflorus) on diatom Stephanodiscus hantzschii were examined in the filtered water, and were compared with those of bacterium plus ciliate. Bacteria removed as 80% of the diatom within 3.5 days, while ciliate and zooplankton suppressed 57% and 40% of diatom during the same period, respectively. Mixed treatment of bacteria plus ciliate removed as 54% of diatoms, while that of bacteria plus zooplankton decreased as 85%. Although single bacteria and mixed treatment of bacteria plus zooplankton quickly decreased the diatom in the initial of experiment, bacteria plus ciliate perfectly removed the diatom in culture flask within 5.5 days of the study. On the other hand, other single and mixed treatments did not clear the diatom during the same period, and over 10% of them still remain in culture flask. Predator biomass in the presence of algicidal bacteria showed the growth patterns; zooplankton gradually decreased, and ciliate sustained over 0.5 cells/ml. These results indicated that the addition of ciliate to the algicidal bacterium in controlling the diatom Stephanodiscus hantzschii is more effective than that of zooplankton. Therefore, this synergistic interaction relationship between the bacterium and ciliate play an important role in the bio-manipulation using bio-agents to control the diatomal bloom in freshwater lakes and streams.