Table 1.

Effects of CO₂ on blood parameters of S. canicula after 4 weeks of treatment. Control n = 6, CO₂ n = 6. Italic numbers indicate a significant difference (p < 0.05).

blood parameter	control	CO2	significance
pH	7.82 ± 0.04	7.75 ± 0.06	p = 0.313
	4.70 ± 0.39	7.68 ± 0.13	p < 0.0001
K+ (mmol l−1)	3.28 ± 0.13	3.27 ± 0.25	p = 0.969
Ca2+ (mmol l−1)	2.89 ± 0.02	2.88 ± 0.04	p = 0.804
Cl− (mmol l−1)	236.28 ± 3.67	243.33 ± 1.74	p = 0.113
Na+ (mmol l−1)	257.39 ± 2.29	266.17 ± 2.74	p = 0.034
haemoglobin (g l−1)	29.11 ± 1.69	27.75 ± 0.93	p = 0.534
haematocrit	15.58 ± 1.24	15.17 ± 0.28	p = 0.740
MCHC (g l−1)	19.44 ± 2.05	18.34 ± 0.72	p = 0.660