Use of metabolic inhibitors to estimate protozooplankton grazing and bacterial production in a monomictic eutrophic lake with an anaerobic hypolimnion
Journal Article
·
· Appl. Environ. Microbiol.; (United States)
OSTI ID:5093264
Inhibitors of eucaryotes (cycloheximide and amphotericin B) and procaryotes (penicillin and chloramphenical) were used to estimate bacterivory and bacterial production in a eutrophic lake. Bacterial production appeared to be slightly greater than protozoan grazing in the aerobic waters of Lake Oglethorpe. Use of penicillin and cycloheximide yielded inconsistent results in anaerobic water and in aerobic water when bacterial production was low. Production measured by inhibiting eucaryotes with cycloheximide did not always agree with (/sup 3/H)thymidine estimates or differential filtration methods. Laboratory experiments showed that several common freshwater protozoans continued to swim and ingest bacterium-size latex beads in the presence of the eucaryote inhibitor. Penicillin also affected grazing rates of some ciliates. The authors recommended that caution and a corroborating method be used when estimating ecologically important parameters with specific inhibitors.
- Research Organization:
- Univ. of Georgia, Athens
- OSTI ID:
- 5093264
- Journal Information:
- Appl. Environ. Microbiol.; (United States), Journal Name: Appl. Environ. Microbiol.; (United States) Vol. 52:1; ISSN AEMID
- Country of Publication:
- United States
- Language:
- English
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Thesis/Dissertation
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·
OSTI ID:7152833
Validity of eucaryote inhibitors for assessing production and grazing mortality of marine bacterioplankton. [Cyclidium sp]
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· Appl. Environ. Microbiol.; (United States)
·
OSTI ID:6791696
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Journal Article
·
Thu Oct 01 00:00:00 EDT 1987
· Appl. Environ. Microbiol.; (United States)
·
OSTI ID:6939518
Related Subjects
550501 -- Metabolism-- Tracer Techniques
550701* -- Microbiology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
ANIMALS
ANTIMETABOLITES
AZINES
BACTERIA
BIOLOGICAL EFFECTS
COMPARATIVE EVALUATIONS
DRUGS
GRAZING
GROWTH
HETEROCYCLIC COMPOUNDS
INVERTEBRATES
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LAKES
MICROORGANISMS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROTOZOA
PYRIMIDINES
RIBOSIDES
SURFACE WATERS
THYMIDINE
TRACER TECHNIQUES
TRITIUM COMPOUNDS
550701* -- Microbiology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
ANIMALS
ANTIMETABOLITES
AZINES
BACTERIA
BIOLOGICAL EFFECTS
COMPARATIVE EVALUATIONS
DRUGS
GRAZING
GROWTH
HETEROCYCLIC COMPOUNDS
INVERTEBRATES
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LAKES
MICROORGANISMS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROTOZOA
PYRIMIDINES
RIBOSIDES
SURFACE WATERS
THYMIDINE
TRACER TECHNIQUES
TRITIUM COMPOUNDS