Table 1.
Stage | N a | Slope ± SE | LC50 (95% FL b(g/L)) | LC90 (95% FL b(g/L)) | χ2(df) c |
---|---|---|---|---|---|
egg | 425 | 1.187 ± 0.182 | 2.239 (1.349 ~ 3.131) | 26.888 (16.980 ~ 58.918) | 2.615 (10) |
larva | 885 | 2.652 ± 0.202 | 1.963 (1.655 ~ 2.300) | 5.973 (4.759 ~ 8.245) | 21.988 (13) |
nymph | 686 | 1.907 ± 0.199 | 1.266 (0.782 ~ 1.705) | 5.951 (4.044 ~ 12.833) | 39.524 (13) |
adult | 625 | 2.107 ± 0.193 | 1.996 (1.624 ~ 2.396) | 8.099 (6.143 ~ 12.155) | 17.138 (13) |
a Number of adult mites used in the bioassay, including controls. b FL = fiducial limit. c Chi-square value and degrees of freedom.