Document Detail


Grazing, growth, and ammonium excretion rates of a heterotrophic microflagellate fed with four species of bacteria.
MedLine Citation:
PMID:  16346264     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We studied aspects of the population growth of a microflagellate, Monas sp., isolated from Lake Kinneret, Israel. The protozoan growth rates, rates of ingestion of bacteria, and final population yields generally increased with increasing bacterial concentrations, although the exact relationship varied depending on the species of bacteria used as food. Grazing rates decreased hyperbolically with increasing food density. Gross growth efficiencies and ammonia excretion rates were similar over a range of food densities among the four species of bacteria. Population doubling times and ammonia excretion rates were lowest, and growth efficiencies were highest, at temperatures between 18 and 24 degrees C. Under optimum conditions, the microflagellates had average population doubling times of 5.0 to 7.8 h, average growth efficiencies of 23.7 to 48.7%, and average ammonia excretion rates of 0.76 to 1.23 mumol of NH(4) per mg (dry wt) per h.
Authors:
B F Sherr; E B Sherr; T Berman
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied and environmental microbiology     Volume:  45     ISSN:  0099-2240     ISO Abbreviation:  Appl. Environ. Microbiol.     Publication Date:  1983 Apr 
Date Detail:
Created Date:  2010-06-25     Completed Date:  2010-06-25     Revised Date:  2010-09-20    
Medline Journal Info:
Nlm Unique ID:  7605801     Medline TA:  Appl Environ Microbiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1196-201     Citation Subset:  -    
Affiliation:
Kinneret Limnological Laboratory, Tiberias, Israel.
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