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Table 2 Larvicidal activity of different extracts of V.anthelmintica seeds against Late III/Early VI instar larvae of A.aegypti. No mortality was observed in the control

From: Exploration of larvicidal activity of Vernonia anthelmintica (L.) wild seed crude extracts in different solvents against malaria (Anopheles stephensi) and dengue (Aedes aegypti) vectors

Solvent used for extraction Concentration of crude extract (ppm) Mortality (%) LC50 (ppm) (LCL - UCL) LC90(ppm)(LCL-UCL) X 2a
Ethanol 50 100 3.461 12.804 15.230**
  25 99 (2.088 - 5.012) (8.267 - 30.435)  
  12.5 94    
  6.25 59    
  3.13 43    
  1.56 29    
Hexane 50 83 14.503 105.282 5.062
  25 61 (12.174 - 17.563) (73.710 - 169.855)  
  12.5 40    
  6.25 30    
  3.13 21    
  1.56 6    
Acetone 50 93 5.563 47.350 1.837
  25 80 (4.537 - 6.699) (34.556 - 72.194)  
  12.5 66    
  6.25 51    
  3.13 40    
  1.56 22    
Chloroform 50 99 2.761 14.009 3.024
  25 98 (2.244 - 3.285) (11.338 - 18.379)  
  12.5 88    
  6.25 69    
  3.13 53    
  1.56 36    
Methanol 50 100 3.393 12.945 9.720*
  25 100 (2.301 - 4.584) (8.950 - 24.277)  
  12.5 89    
  6.25 65    
  3.13 42    
  1.56 30    
  1. LC50 Lethal concentration that kills 50% of exposed larvae; LC90 Lethal concentration that kills 90% of exposed larvae; LCL Lower confidence limits; UCL Upper confidence limits; χ2 Chi-square;* Significant at P <0.05;** Significant at P <0.01; a degree of freedom 4