Titre du document / Document title
Accumulation of selenium in a model freshwater microbial food web
Auteur(s) / Author(s)
SANDERS R. W. (1) ;
GILMOUR C. C. ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Acad. natural sci., Patrick cent. environmental res., Philadeophia PA 19103, ETATS-UNIS
Résumé / Abstract
The transfer of selenium between bacteria and the ciliated protozoan, Paramecium putrinum, was examined in laboratory cultures. The population growth of the ciliate was not inhibited in the presence of the highest concentrations of dissolved selenite or selenate tested (10
3 μg liter
-1). Experiments with radioactive
75selenite or
75selenate indicated that accumulation of selenium by ciliates through time was low when feeding and metabolism were reduced by incubating at 0
oC. However, selenium accumulated in ciliate biomass during incubation with dissolved
75Se and bacteria at 24
oC and also when bacteria prelabeled with
75Se were offered as food in the absence of dissolved selenium
Revue / Journal Title
Applied and environmental microbiology
ISSN
0099-2240
CODEN AEMIDF
Source / Source
1994, vol. 60, n
o8, pp. 2677-2683 (43 ref.)
Langue / Language
Anglais
Editeur / Publisher
American Society for Microbiology, Washington, DC, ETATS-UNIS
(1976)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 7195, 35400004068566.0020
Nº notice refdoc (ud4) : 4163939
