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- W2060210947 abstract "AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 33:173-179 (2003) - doi:10.3354/ame033173 Active flagellates grazing on prokaryotes in high salinity waters of a solar saltern Jong S. Park, Heejung Kim, Dong H. Choi, Byung C. Cho* Molecular and Microbial Ecology Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 151-742, South Korea *Corresponding author. Email: bccho@plaza.snu.ac.kr ABSTRACT: Heterotrophic nanoflagellates (HNF) are known to be active grazers of prokaryotes and frequently major agents of prokaryotic mortality in various marine environments. However, studies on HNF occurrences and activities in high salinity (>300‰) waters have shown contradictory results. Further, measurements of active HNF grazing on prokaryotes have not been reported in high salinity waters. Interestingly, in high salinity waters of a solar saltern located on the west coast of Korea, the flagellate grazing rates determined by uptake of fluorescently labeled prokaryotes (FLP) ranged from 1.4 to 13.0 x 108 cells l-1 h-1, turning over prokaryotes in 9 to 48 d. The occurrences of active grazing in high salinity waters were further independently confirmed through an FLP disappearance approach. Prokaryotes in high salinity waters seemed to be strongly controlled by flagellates grazing in summer in the saltern. Naturally, high occurrences of flagellates (7 to 28 x 106 HNF l-1) were observed in high salinity waters. The flagellates were 5 to 12 μm in length, devoid of autofluorescence and actively ingested prokaryotes. In cultures maintained in the dark for 4 mo after field samples were diluted to contain a single HNF per culture tube, active flagellate growth continued to be observed. It seems that heterotrophic and extremely halophilic eukaryotic grazers actively ingest prokaryotes in high salinity waters. KEY WORDS: Heterotrophic nanoflagellate · Grazing · Solar saltern · High salinity waters · Crystallizer Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 33, No. 2. Online publication date: October 14, 2003 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2003 Inter-Research." @default.
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- W2060210947 title "Active flagellates grazing on prokaryotes in high salinity waters of a solar saltern" @default.
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