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Updated: May 6, 2026

Discovery of New Intracellular Pathogens by Amoebal Coculture and Amoebal Enrichment Approaches
Published on: October 27, 2013
Respiratory studies on two small freshwater amoebae
J Laybourn-Parry1, B Baldock, C Kingmill-Robinson
1Department of Biological Sciences, University of Lancaster, Lancaster, UK.
Abstract:
The changes in respiration rate and mean cell volume induced by temperature within the range 10°C-25°C were investigated in two small species of freshwater amoebae,Saccamoeba limax Page andVannella sp. Mean cell volume varied in response to temperature, with maxima at 20°C inVannella sp. (10.15× 10(3) (±1.80)μm(3) and 15°C inS. limax (9.08×10(3) (±0.93)μm(3). Respiration rate increased over the temperature range investigated. The highest rates and the greatest rate of increase between temperatures occurred inVannella sp. Q10 ranged between 0.12 and 1.33 inS. limax and between 1.77 and 7.36 inVannella sp. A regression of log oxygen uptake versus log cell volume incorporating the data of the present investigation and the data of other workers on amoeba respiration is presented, and the ecological significance and application of such data discussed.
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