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6214167 
Journal Article 
Methanogens associated with rumen ciliates 
Kojima, Y; Miyazaki, K; Tokura, M; Ushida, K 
1997 
Yes 
FEMS Microbiology Ecology
ISSN: 0168-6496
EISSN: 1574-6941 
22 
2 
137-143 
WOS:A1997WH70800006 
Methanogenesis per ciliate protozoan and most probable numbers (MPN) of methanogens per ciliate were measured and observed to be affected by feeding. The close similarity observed between the changes in apparent methane production and the changes in the number of methanogens per ciliate indicated that apparent methane production by ciliates depended primarily on the number of methanogens associated with them. Large changes in the MPN of methanogens associated with ciliates occurred rapidly. It is likely that these changes reflect the number of methanogens that associated extracellularly with the ciliates. Methanogens associated with ciliates may have differed from the free living methanogens in halophilism and their resistance to ammonium ions. 
Rumen ciliate; Methanogen; Symbiosis