Table 5.

Activity of CAT in different life stages of B. dorsalis of different geographic populations

Stages	Populations	Enzyme activity (U/mg protein)
		Control	Cold stressed
Third-instar larvae	Guangzhou	24.45 ± 0.52 a	27.95 ± 0.65 a
	Xiamen	23.64 ± 0.46 a	27.11 ± 0.51 a
	Wuxi	20.75 ± 0.45 b	24.56 ± 0.60 b
	F , P values	50.40, 0.0002	27.04, 0.001
Three-day-old pupae	Guangzhou	26.46 ± 1.00 a	31.34 ± 1.05
	Xiamen	26.05 ± 0.49 a	31.21 ± 0.46
	Wuxi	24.01 ± 0.83 b	31.88 ± 0.90
	F , P values	8.11, 0.02	0.53, 0.61
Two-day-old adults	Guangzhou	27.64 ± 0.90 a	34.50 ± 1.37
	Xiamen	26.70 ± 0.31 a	33.69 ± 0.45
	Wuxi	25.14 ± 0.71 b	32.49 ± 0.81
	F , P values	10.25, 0.012	3.34, 0.11