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Zoological Studies

Table 1 Plasma osmolality, serum electrolytes, and concentrations of other constituents in the Yangtze and Bohai finless porpoise

From: Concentrations of osmotically related constituents in plasma and urine of finless porpoise (Neophocaena asiaeorientalis): implications for osmoregulatory strategies for marine mammals living in freshwater

Constituents   Yangtze population Bohai population
  N(n) Mean ± SD Range CV% N(n) Mean ± SD Range CV%
Osmolality mosmol/kg 21 (21) 329.24 ± 7.06 317.0 to 342.0 2.14 8 (8) 361.5 ± 15.2** 342.0 to 387.0 4.20
Na+ mmol/L 22 (22) 153.4 ± 1.71 149.1 to 156.4 1.11 15 (22) 156.24 ± 8.11 147.0 to 175.4 5.19
K+ mmol/L 22 (22) 4.5 ± 0.79 3.64 to 7.29 17.56 15 (22) 4.28 ± 0.85 3.4 to 7.3 19.86
Cl- mmol/L 22 (22) 107.9 ± 3.41 96.80 to 111.70 3.16 15 (22) 117.29 ± 7.63** 106.0 to 131.70 6.50
Ca2+ mmol/L 21 (21) 2.62 ± 0.07 2.47 to 2.77 2.67 15 (22) 2.53 ± 0.25 2.1 to 3.11 9.88
Mg2+ mmol/L 21 (21) 0.7 ± 0.11 0.54 to 1.01 15.71 15 (15) 0.87 ± 0.15** 0.6 to 1.1 17.24
P3+ mmol/L 22 (22) 1.26 ± 0.26 0.89 to 1.93 20.0 15 (15) 1.86 ± 0.61** 0.3 to 3.0 32.80
Creatinine umol/L 22 (22) 81.2 ± 11.67 64.00 to 106.70 14.37 15 (22) 72.48 ± 24.02 41.0 to 125.2 33.14
Urea mmol/L 20 (20) 16.75 ± 3.19* 9.35 to 22.56 19.04 15 (22) 14.35 ± 3.11 9.3 to 18.6 21.67
Glucose mmol/L 20 (20) 7.73 ± 1.17 5.85 to 10.37 15.14 15 (15) 8.31 ± 2.27 3.9 to 11.5 27.32
Uric acid umol/L 22 (22) 44.6 ± 17.14** 22.80 to 84.20 38.43 15 (22) 12.94 ± 7.98 4.3 to 36.0 61.67
  1. Significant differences between the finless porpoises are indicated by *P < 0.05 and **P < 0.01. N, individual number; n, sample number.
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