Table 1 Experimental condition for the toxicological assays and parameters of species sensitivity distribution curves
From: Species sensitivity distribution of dichlorvos in surface water species
R a | Species | Classb | Stagec | Time | n by conc. | n | Range (μg L− 1) | EC50 ± SEc | Slope | d (Upper value) |
|---|---|---|---|---|---|---|---|---|---|---|
1 | D. magna | Art | 24 h old | 48 h | 4 × 5 inde | 200 | 0.022–4.60 | 0.22 ± 0.03 | 2.33 ± 0.60 | 0.87 ± 0.03 |
2 | C. crystallinus | Art | 10 mm Larvae | 48 h | 4 × 5 ind. | 200 | 1.00–88 | 2.52 ± 0.56 | 1.65 ± 0.35 | 0.90 ± 0.03 |
3 | C. riparius | Art | 4th instar Larvae | 48 h | 5 × 5 ind. | 175 | 2.56–40 | 12.0 ± 1.6 | 3.37 ± 1.14 | 0.84 ± 0.04 |
4 | G. pulex | Art | RS > 5 mm | 48 h | 4 × 5 ind. | 162 | 3.60–362 | 54 ± 14 | 1.62 ± 0.43 | 0.90 ± 0.04 |
5 | H. azteca | Art | RS > 1 mm | 48 h | 6 × 3 ind. | 140 | 25–460 | 70 ± 14 | 2.71 ± 1.04 | 0.89 ± 0.05 |
6 | T. tubifex | Ann | RS > 10 mm | 48 h | 4 × 5 ind. | 140 | 20–600 | 181 ± 44 | 1.39 ± 0.33 | 0.97 ± 0.02 |
7 | P. atipodarum | Mol | RS > 1 mm | 48 h | 4 × 4 ind. | 96 | 1.00–85 | 7320 ± 930 | 4.99 ± 1.83 | 0.95 ± 0.03 |
8 | L. minor | Tra | 2 weeks old | 7 d | 3 × 1 frond | 30 | 1020–70,000 | 31,220 ± 4762 | 1.25 ± 0.25 | 0.97 ± 0.02 |