Effect of Terbuthylazine-2-hydroxy at Environmental Concentrations on Early Life Stages of Common Carp (Cyprinus carpio L.)

Table 1

Growth rate and fish mortality results of the 35-day embryo-larva toxicity test on common carp after terbuthylazine-2-hydroxy exposure.

	Fish group
	Control	E1	E2	E3	E4
Terbuthylazine-2-hydroxy (mg/L)	—	0.0029	0.07	1.4	3.5
𝑚9 (mean ± SD, mg)	2.32±0.46	2.34±0.54	2.08±0.43	2.11±0.60	2.27±0.33
𝑚35 (mean ± SD, mg)	76.03±25.58	75.08±18.12	48.11±19.93^∗	38.23±16.55^∗	27.34±5.28^∗
SGR	13.31	13.35	11.88	10.96	9.54
𝐼 (%)	—	−0.30	10.74	17.66	28.32
Total mortality (%)	7	9	18	25	50

𝑚₉,𝑚₃₅: mean fish mass in selected group after 9 and 35 days exposure; SGR: mean specific growth rate in selected group after 26 days exposure; 𝐼: inhibition of specific growth in selected group after 26 days exposure; SD: standard deviation. *Experimental groups significantly (𝑃<0.01) different from the control group.