Table 2.

Calorimetry results of the tardigrades after a period of starvation, cold acclimatization and feeding

% of body water frozen during freezing of exotherm
SpeciesSCP starved (°C)NSCP cold acclimatized (°C)NSCP fed (°C)NWarm acclimatizedCold acclimatized
M. sapiens –23.7±3.9a,b28–24.2±3.9a16n.t.84.5±6.181.1±3.2
P. richtersi `group 1'–21.7±2.1a20–19.2±2.0a18n.t.84.3±6.179.9±4.4
P. richtersi `group 2'–20.5±4.9a31–21.0±4.9a18n.t.85.5±5.982.6±4.2
P. richtersi `group 3'–20.4±2.9a15–21.3±2.3a15–21.5±4.51586.8±4.080.9±4.9
P. richtersi –21.6±3.8a27–20.6±2.8a19–20.9±4.31585.7±3.782.5±6.5
M. tonollii –21.8±3.2a,b28–20.9±4.0a18n.t.86.4±3.0812.0±5.3
M. tardigradum –22.0±3.5a,b26–22.6±2.8a21n.t.85.1±7.880.5±4.5
E. granulatus –11.5±3.015–10.3±1.915n.t.83.8±8.178.0±5.4
E. testudo –18.4±2.223–16.7±3.917n.t.84.3±8.280.5±4.9
  • Values are presented as means ± s.d. (n.t., not tested). N=individual animals used for each supercooling point (SCP) determination. aSignificant difference from SCPs of E. granulatus; bsignificant difference from SCPs of E. testudo