Effects of Acute and Chronic Heavy Metal (Cu, Cd, and Zn) Exposure on Sea Cucumbers (Apostichopus japonicus)

Table 4

Effects of acute Zn, Cu, and Cd stress on the survival rate of Apostichopus japonicus.

Cations	Concentration (mg L^−1)	24 h; Survival rate (%)	48 h; Survival rate (%)	72 h; Survival rate (%)	96 h; Survival rate (%)
Zn	1.00	100	100	100	100
	1.43	100	100	100	100
	2.05	100	94.44	83.33	77.78
	2.94	94.44	83.33	66.67	33.33
	4.21	83.33	66.67	38.89	16.67
	6.00	66.67	38.89	11.11	0
Cu	0.02	100	100	100	100
	0.03	100	100	100	100
	0.05	100	100	100	100
	0.08	94.44	88.89	77.78	77.78
	0.13	88.89	77.78	55.56	50.00
	0.20	77.78	61.11	38.89	27.78
Cd	0.50	100	100	100	100
	0.66	100	100	100	100
	0.87	100	100	100	100
	1.15	94.44	88.89	77.78	66.67
	1.51	88.89	77.78	66.67	50.00
	2.00	33.33	72.22	55.56	38.89
	Control	100	100	100	100