Table 1.

Larvicidal activity of the microbially synthesised AgNPs

Species	Concentrations (mg/L)	Percent mortality ± SD	LC50 (mg/L)	95 % confidence interval for LC50		r 2	χ 2 (df = 4)	Regression equation
				LCL (mg/L)	UCL (mg/L)
Anopheles subpictus	100	100 ± 0.00	51.34	47.72	55.22	0.962	8.228	y = −24.5x + 128.9
	80	82 ± 2.36
	60	66 ± 1.89
	40	21 ± 3.33
	20	8 ± 1.00
Culex quinquefasciatus	100	100 ± 0.00	48.98	44.81	53.53	0.956	14.307	y = −23.8x + 130.4
	80	96 ± 2.25
	60	54 ± 1.96
	40	32 ± 2.50
	20	13 ± 3.78
Aedes aegypti	100	96 ± 2.24	60.232	55.854	65.032	0.972	4.042	y = −21.7x + 110.9
	80	62 ± 2.74
	60	42 ± 2.73
	40	21 ± 3.33
	20	8 ± 1.00

Control−nil mortality, a mean value of five replicates, significant at P < 0.05 level, LC50 lethal concentration that kills 50 % of the exposed larvae

UCL upper confidence limit, LCL lower confidence limit, r2 regression co-efficient, χ2 Chi square, df degrees of freedom