Toxicity of six plant extracts and two pyridone alkaloids from Ricinus communis against the malaria vector Anopheles gambiae

Table 3 Relative toxicity of different plant extracts against female An. gambiae s.s. after 7 days of oral feeding

Plant extract	χ²	Regression equation	LC₅₀(mg/mL)	LCL-UCL(mg/mL)	LC₉₀(mg/mL)	LCL-UCL(mg/mL)
A. afra	7.44	y = 4.14 + 1.38x	4.16	3.76 - 4.58	34.91	27.85 - 46.24
B. pilosa	66.18	y = 2.27 + 4.01x	4.79	2.11 - 6.52	9.99	7.18 - 45.66
P. hysterophorus	28.64	y = 2.48 + 3.31x	5.74	3.76 - 7.45	13.99	9.89 - 45.50
T. diversifolia	11.76	y = 4.55 + 2.39x	1.53	1.07 - 1.96	5.23	4.19 - 7.00
R. communis	36.02	y = 3.47 + 3.73x	2.56	1.41 - 3.40	5.65	4.36 - 8.66
S. didymobotrya	30.57	y = 1.70 + 3.60x	8.21	6.07 - 13.38	18.61	12.12 - 222.43
A. indica	30.04	Y = 4.69 + 2.50x	1.34	0.67 - 1.94	4.34	3.08 - 7.29

LC₅₀ and LC₉₀ lethal concentration that kills 50% and 90% of the ingesting female An. gambiae s.s. respectively, LCL lower confidence limit, UCL upper confidence limit based on 95% Confidence interval, χ² chi-square values.

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