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Table 2.

Morphometric measurements of Chrysemys picta reared on different experimental substrata and tested shortly after hatching (summer) or after acclimation to 4°C (winter)

Paper
Vermiculite
Soil
SummerWinterSummerWinterSummerWinter
Carapace length (mm) 21.9±0.6 23.4±0.4 24.5±0.3 23.9±0.5 24.7±0.3 23.5±0.4 
Plastron length (mm) 21.7±0.5 22.7±0.4 23.1±0.3 23.2±0.6 24.2±0.4 23.4±0.4 
Body mass (g) 3.3±0.2 2.8±0.2 4.2±0.2 3.2±0.2* 4.7±0.2 3.6±0.2* 
Yolk mass (mg) 177.0±39.0 43.0±7.8* 117.0±20.0 28.0±5.7* 150.0±26.6 15.0±3.1* 
Gut mass (mg) 77.0±6.0 73.0±5.2 123.0±6.2 83.0±6.3* 163.0±14.1 99.0±5.0* 
Paper
Vermiculite
Soil
SummerWinterSummerWinterSummerWinter
Carapace length (mm) 21.9±0.6 23.4±0.4 24.5±0.3 23.9±0.5 24.7±0.3 23.5±0.4 
Plastron length (mm) 21.7±0.5 22.7±0.4 23.1±0.3 23.2±0.6 24.2±0.4 23.4±0.4 
Body mass (g) 3.3±0.2 2.8±0.2 4.2±0.2 3.2±0.2* 4.7±0.2 3.6±0.2* 
Yolk mass (mg) 177.0±39.0 43.0±7.8* 117.0±20.0 28.0±5.7* 150.0±26.6 15.0±3.1* 
Gut mass (mg) 77.0±6.0 73.0±5.2 123.0±6.2 83.0±6.3* 163.0±14.1 99.0±5.0* 

Values are means ± S.E.M.; N=10 replicates per group.

Asterisk denotes that the value for the winter group differed significantly from the corresponding value for the summer group within the same treatment. Statistical significance is taken at the level of P<0.05.

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