Effect of Chronic Exposure to Prometryne on Oxidative Stress and Antioxidant Response in Red Swamp Crayfish (Procambarus clarkii)

Table 2

Effect of chronic exposure to prometryne on superoxide dismutase (SOD, nmol NBT min⁻¹ mg⁻¹ protein) activity in red swamp crayfish tissues.

Indices	Exposure time (days)	Test groups
		Control	Prometryne; 0.51 μg L^−1	Prometryne; 0.144 mg L^−1	Prometryne; 1.44 mg L^−1
Hepatopancreas	11	0.216±0.01	0.111±0.05^∗	0.126±0.02^∗	0.132±0.04^∗
	25	0.164±0.04	0.155±0.04	0.086±0.02^∗	0.076±0.02^∗
Muscle	11	0.075±0.04	0.057±0.03	0.093±0.06	0.098±0.17
	25	0.330±0.01	0.043±0.02	0.008±0.00^∗	0.010±0.00^∗

Data are means ± SD, 𝑛=6. Significant differences compared with control value, *<0.01.