Role of diatom-attached choanoilagellates of the genus Salpingoeca as pelagic bacterivores

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F04%3A00005598" target="_blank" >RIV/60076658:12310/04:00005598 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Role of diatom-attached choanoilagellates of the genus Salpingoeca as pelagic bacterivores
Original language description
We studied the ecological role of choanoflagellates of the genus Salpingoeca (possibly S. amphoridium) attached to the colonial diatoms Asterionella formosa and Fragilaria crotonensis in the Rimov reservoir (South Bohemia). The choanoflagellate was foundonly on these 2 species of diatoms (0 to 35 choanoflagellate cells per diatom colony). It is clearly identifiable in natural samples, and is a highly efficient planktonic bacterivore. In 2 field experiments (Expt 1 in June 2000 and Expt 2 in September 2002) we estimated in situ rates of bacterivory using fluorescently labeled bacteria (FLB) as tracers. There was a linear increase in the number of FLB per choanoflagellate during the first 30 min of incubation, with only 8 to 16 % of individuals within the natural populations displaying no ingestion of FLB. Taxon-specific bacteria uptake rate of Salpingoeca spp. was 35 to 65 bacteria cell(-1) h(-1). In Expt 2, by manipulating phosphorus (P) and organic carbon availability (glucose), we a
Czech name
Úloha choanoflagelátů rodu Salpingoeca přisedlých na rozsivkách
Czech description
Úloha choanoflagelátů rodu Salpingoeca přisedlých na rozsivkách

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DA - Hydrology and limnology
OECD FORD branch
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Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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