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Description
| - An experiment designed to examine food preferences of heterotrophic nanoflagellates grazing on bacterioplankton was performed in the freshwater Římov reservoir. Water samples were size-fractionated to obtain <5um filtrate containing bacteria and HNF. To manipulate resource availability,<5um treatments were incubated in dialysis bags submerged in the barrels filled with the unfiltered reservoir water amended with either orthophosphate or glucose or combination of both. We employed r-RNA-targeted probes to assess HNF prey preferences by analyzing bacterial prey in HNF food vacuoles compared to available bacteria. Actinobacteria were avoided by HNF in all treatments. Cytophaga-Flavobacterium-Bacteroidetes bacteria were positively selected mainly in treatments in which bacteria were heavily grazed,the <5um treatments, but this trend was less pronounced towards the end of the study. The members of a small subcluster of Betaproteobacteria were mostly positively selected.
- An experiment designed to examine food preferences of heterotrophic nanoflagellates grazing on bacterioplankton was performed in the freshwater Římov reservoir. Water samples were size-fractionated to obtain <5um filtrate containing bacteria and HNF. To manipulate resource availability,<5um treatments were incubated in dialysis bags submerged in the barrels filled with the unfiltered reservoir water amended with either orthophosphate or glucose or combination of both. We employed r-RNA-targeted probes to assess HNF prey preferences by analyzing bacterial prey in HNF food vacuoles compared to available bacteria. Actinobacteria were avoided by HNF in all treatments. Cytophaga-Flavobacterium-Bacteroidetes bacteria were positively selected mainly in treatments in which bacteria were heavily grazed,the <5um treatments, but this trend was less pronounced towards the end of the study. The members of a small subcluster of Betaproteobacteria were mostly positively selected. (en)
- Experiment sledující potravní preference prvoků byl proveden na sladkovodní nádrži Římov. Vzorky vody byly velikostně frakcionovány, abychom dostali frakci menší než 0,5 mikrometrů obsahující bakterie a heterotrofní prvoky. Abychom mohli manipulovat dostupnost nutrientů, 5 mikrometrové frakce byly inkubovány v dialyzačních sáčcích ponořených v barelech naplněných nefiltrovanou vodou z nádrže, obohacenou o fosfát, glukózu, případně obojí. Byl aplikovány genetické próby přímo k určení potravních preferencí prvoků analýzou jejich potravních vakuol. Bakterie patřící mezi Actinobacteria byly negativně selektovány ve všech variantách. Bakterie patřící do skupiny Cytophaga-Flavobacterium-Bacteroidetes byly vesměs pozitivně selektovány, hlavně ve variantách se silným predačním tlakem vyvíjeným na bakterie. Tento trend se měnil s postupujícím pokusem. Podskupina bakterií patřících do skupiny Betaproteobacteria byla prvoky pozitivně přijímána. (cs)
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Title
| - Prey selectivity of bacterivorous protists in different size fractions of reservoir water amended with nutrients
- Potravní preference prvoků v rozdílných frakcích vody obohacené o nutrienty (cs)
- Prey selectivity of bacterivorous protists in different size fractions of reservoir water amended with nutrients (en)
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skos:prefLabel
| - Prey selectivity of bacterivorous protists in different size fractions of reservoir water amended with nutrients
- Potravní preference prvoků v rozdílných frakcích vody obohacené o nutrienty (cs)
- Prey selectivity of bacterivorous protists in different size fractions of reservoir water amended with nutrients (en)
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skos:notation
| - RIV/60077344:_____/06:00047194!RIV07-AV0-60077344
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GA206/05/0007), Z(AV0Z60170517), Z(MSM6007665801)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60077344:_____/06:00047194
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - selectivity; flagellates; grazing; fluorescence; reservoir; nutrients (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Environmental Microbiology
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Horňák, Karel
- Šimek, Karel
- Jezbera, Jan
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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