Effects of Salinity on the Egg Fertilization, Hatching, and Tadpole Growth and Survival Rates of the Thailand Frog (Rana tigerina Dubois, 1981)

Table 3

The growth performance of the Thailand frog during the tadpole transition stage from yolk sac exhaustion to juvenile, at various salinities.

Salinities (%)	Initial mean weight (g/individual)	Final mean weight (g/individual)	Daily weight gain (g/day)	Specific growth rate (%/day)
The tadpole stage from yolk sac exhaustion to the onset of the emergence of the hind legs
0	0.34 ± 0.13^a	1.47 ± 0.03^b	0.083 ± 0.005^a	0.110 ± 0.002^a
3	0.34 ± 0.13^a	1.57 ± 0.01^a	0.085 ± 0.003^a	0.111 ± 0.002^a
5	0.34 ± 0.13^a	1.56 ± 0.03^a	0.087 ± 0.002^a	0.113 ± 0.001^a
The tadpole stage from the onset of the emergence of the hind legs to the onset of the emergence of the forelegs
0		3.17 ± 0.04^b	0.195 ± 0.003^b	0.112 ± 0.006^b
3		3.98 ± 0.41^a	0.226 ± 0.021^a	0.223 ± 0.019^a
5		2.99 ± 0.02^b	0.186 ± 0.002^b	0.113 ± 0.001^b
The stage from the onset of the emergence of the forelegs to fingerlings
0		4.98 ± 0.15^b	0.129 ± 0.014^a	0.030 ± 0.003^ab
3		5.61 ± 0.07^a	0.134 ± 0.018^a	0.036 ± 0.004a^a
5		4.77 ± 0.14^b	0.127 ± 0.009^a	0.033 ± 0.001^ab

Values are presented as mean ± SD. Values with different superscript letters (a, b) in the same column show a significant difference .