Assessment of molluscicidal and larvicidal activities of CuO nanoparticles on Biomphalaria alexandrina snails

Beni-Suef University Journal of Basic and Applied Sciences

Table 3 The survival rate (L_x) and fecundity (M_x) of adult B. alexandrina snails exposed for 24 h/ week to the sub-lethal concentrations of CuO NPs for 4 weeks followed by 4 weeks of recovery

Weeks	Control			LC₀ (4 mg\l)			LC₁₀ (2.417 mg\l)			LC₂₅ (27.18 mg\l)
	L_x	M_x	L_x M_x	L_x	M_x	L_x M_x	L_x	M_x	L_x M_x	L_x	M_x	L_x M_x
0	1.00	3.96	3.96	1.00	3.96	3.96	1.00	3.96	3.96	1.00	3.96	3.96
1	0.99	1.13	1.11	0.96	0.75	0.72	0.88	0.15	0.132	0.81	0.11	0.089
2	0.98	2.70	2.64	0.90	0.41	0.369	0.76	0.42	0.319	0.73	0.1	0.073
3	0.95	4.55	4.32	0.85	0.28	0.238	0.55	0.21	0.115	0.36	0.1	0.036
4	0.91	9.5	8.64	0.80	0.6	0.48	0.38	0.21	0.079	0.25	0	0
5	0.90	4.3	3.87	0.70	2.8	1.96	0.25	0	0
6	0.85	5.6	4.76	0.5	0.33	0.165	0.07	0	0
7	0.85	8.7	7.39	0.3	0.60	0.18
8	0.80	9.4	7.52	0.25	0.46	0.115
R_o = ΣL_x M_x	40.266			4.507***			0.645***			0.198***
Reduction %				88.8			98.3			99.5