Table 2. Variations of osmolality, AST and ALT in plasma of olive flounder, Paralichthys olivaceus and Japanese croaker, Nibea japonica on raising water temperature sharply and continuously

Rearing days Water temperature (°C) Osmolality (mOsm/kg) AST (IU/L) ALT (IU/L)
Olive flounder Japanese croaker Olive flounder Japanese croaker Olive flounder Japanese croaker
Stressed Non-stressed Stressed Non-stressed Stressed Non-stressed Stressed Non-stressed Stressed Non-stressed Stressed Non-stressed Stressed Non-stressed
0 23 23 430.5 ± 7.8bc 430.5 ± 7.8 331.5 ± 5.0 331.5 ± 5.0a 24.3 ± 2.1a 24.3 ± 2.1b 15.2 ± 12.9ab 15.2 ± 12.9 23.9 ± 0.2ab 23.9 ± 0.2c 9.8 ± 1.9c 9.8 ± 1.9
1 26 23 442.5 ± 3.5c 421.0 ± 29.7 328.0 ± 2.8 326.5 ± 0.7a 37.7 ± 4.0bc 20.4 ± 0.1a 17.3 ± 6.2ab 16.6 ± 1.3 31.2 ± 2.5b 21.1 ± 1.0a 7.1 ± 1.5bc 10.8 ± 1.1
5 23 24 447.0 ± 5.7c NT 333.0 ± 5.7 NT 37.7 ± 1.0bc NT 20.4 ± 0.5b NT 28.5 ± 5.2ab NT 8.6 ± 2.3c NT
9 29 23 441.5 ± 19.1c 437.0 ± 4.2 331.5 ± 23.3 330.5 ± 2.1a 23.9 ± 0.2a 20.7 ± 0.5a 23.3 ± 4.9b 20.9 ± 0.3 18.3 ± 0.2a 21.6 ± 0.2ab 9.3 ± 2.1c 11.6 ± 0.8
13 23 23 443.5 ± 17.7c NT 332.5 ± 3.5 NT 36.6 ± 6.4b NT 20.2 ± 7.5b NT 32.7 ± 0.4b NT 3.5 ± 2.3ab NT
17 32 22 435.5 ± 40.3bc 444.5 ± 6.4 329.5 ± 6.4 334.5 ± 9.2a 27.5 ± 2.4a 22.2 ± 0.1ab 2.1 ± 1.8a 21.7 ± 1.0 28.2 ± 10.2ab 22.2 ± 0.5ab 1.4 ± 0.3a 10.9 ± 0.7
21 23 23 397.0 ± 1.4ab 423.5 ± 7.8 324.0 ± 2.6 331.0 ± 1.4a 44.3 ± 2.8c 20.6 ± 0.1a 14.7 ± 7.6ab 21.7 ± 1.6 29.0 ± 6.5ab 21.8 ± 0.0ab 7.7 ± 0.2c 12.1 ± 0.4
60 17 17 386.5 ± 5.0a 421.5 ± 17.7 339.5 ± 5.0 345.5 ± 2.1b 26.9 ± 0.1a 21.2 ± 0.2a 3.0 ± 0.8a 18.8 ± 0.2 21.8 ± 5.4ab 22.5 ± 0.4b 7.4 ± 0.2bc 11.0 ± 4.1
The values are mean ± SD (olive flounder, n = 6; Japanese croaker, n = 8).
Means within each column followed by the same alphabetic letter are not significantly different (p > 0.05).
AST, aspartate aminotransferase; ALT, alanine aminotransferase; NT, not tested.