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Statements

Subject Item
n2:RIV%2F60076658%3A12310%2F04%3A00005598%21RIV%2F2005%2FMSM%2F123105%2FN
rdf:type
n9:Vysledek skos:Concept
dcterms: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 found only 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 also examined how Úloha choanoflagelátů rodu Salpingoeca přisedlých na rozsivkách 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 found only 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 also examined how
dcterms:title
Role of diatom-attached choanoilagellates of the genus Salpingoeca as pelagic bacterivores Role of diatom-attached choanoilagellates of the genus Salpingoeca as pelagic bacterivores Úloha choanoflagelátů rodu Salpingoeca přisedlých na rozsivkách
skos:prefLabel
Úloha choanoflagelátů rodu Salpingoeca přisedlých na rozsivkách Role of diatom-attached choanoilagellates of the genus Salpingoeca as pelagic bacterivores Role of diatom-attached choanoilagellates of the genus Salpingoeca as pelagic bacterivores
skos:notation
RIV/60076658:12310/04:00005598!RIV/2005/MSM/123105/N
n3:strany
257-269
n3:aktivita
n11:Z
n3:aktivity
Z(MSM 123100004)
n3:cisloPeriodika
3
n3:dodaniDat
n8:2005
n3:domaciTvurceVysledku
n15:9040358 n15:6252591
n3:druhVysledku
n6:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
584951
n3:idVysledku
RIV/60076658:12310/04:00005598
n3:jazykVysledku
n18:eng
n3:klicovaSlova
reservoir;microbial food webs;protistan bacterivory;bacterioplankton;grazing-induced mortality;choanoflagellates;ciliates
n3:klicoveSlovo
n7:protistan%20bacterivory n7:reservoir n7:choanoflagellates n7:microbial%20food%20webs n7:grazing-induced%20mortality n7:ciliates n7:bacterioplankton
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[AE89EC2BEF85]
n3:nazevZdroje
Aquatic Microbial Ecology
n3:obor
n10:DA
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n8:2004
n3:svazekPeriodika
36
n3:tvurceVysledku
Horňák, Karel Jezbera, Jan Vrba, Jaroslav Šimek, Karel Seďa, Jaromír
n3:zamer
n13:MSM%20123100004
s:issn
0948-3055
s:numberOfPages
13
n16:organizacniJednotka
12310