The Company of Biologists

Table 4.

Effects of exposure to NH₄Cl in various tissues of B. sinensis

Variable	Control	+NH₄Cl
Ammonia excretion rate (μmol h^-1 g^-1 fish)
Day 0	0.20±0.04 (3)	0.18±0.04(7)^¹
Day 1	0.22±0.03 (4)	0^{^*} (6)
Day 2	0.22±0.06 (4)	0^{^*} (7)
Day 3^²	0.23±0.02 (4)	0.45±0.05^{^*}(3)
Ammonia concentration^³(μmol g^-1 tissue)
Muscle	1.85±0.21 (3)	13.2±0.51^{^*}(4)
Liver	1.15±0.10 (4)	8.87±0.46^{^*}(4)
Plasma	0.26±0.08 (3)	2.62±0.43^{^*}(3)

Variable	Control	+NH₄Cl
Ammonia excretion rate (μmol h^-1 g^-1 fish)
Day 0	0.20±0.04 (3)	0.18±0.04(7)^¹
Day 1	0.22±0.03 (4)	0^{^*} (6)
Day 2	0.22±0.06 (4)	0^{^*} (7)
Day 3^²	0.23±0.02 (4)	0.45±0.05^{^*}(3)
Ammonia concentration^³(μmol g^-1 tissue)
Muscle	1.85±0.21 (3)	13.2±0.51^{^*}(4)
Liver	1.15±0.10 (4)	8.87±0.46^{^*}(4)
Plasma	0.26±0.08 (3)	2.62±0.43^{^*}(3)

N values are given in parentheses.

Significantly different from control values (P<0.05).

Same as control set, before exposure to NH₄Cl.

Transferred to 30% sea water, pH 7.2, for recovery after day 2.

After exposure for two days.