Table 1.

Cell volume and cell biomass of Histiobalantium bodamicum and Vorticella natans at moderate food level (0.5 mg C/liter) and temperatures ranging from 5 to 20 °C

Temperature (°C)	Species	Cell volume (µm3)	Cell biomass (ng C/cell)
5	H. bodamicum	40,941 ± 9,722	4.6 ± 1.0
	V. natans	20,539 ± 9,567	2.4 ± 1.1
10	H. bodamicum	34,628 ± 8,581	3.9 ± 0.9
	V. natans	22,068 ± 8,932	2.6 ± 1.0
15	H. bodamicum	26,749 ± 7,471	3.1 ± 0.8
	V. natans	29,455 ± 10,153	3.4 ± 1.1
18	H. bodamicum	32,557 ± 8,795	3.7 ± 0.9
20	V. natans	17,848 ± 7,938	2.1 ± 0.9