Salinity Replicate number LC50(95% confidence interval)
24h 48h 72h 96h
5% beta-cypermethrin (μg/L)
1 0.37(0.26-0.53) 0.28(0.18-0.44) 0.18(0.10-0.30) 0.16(0.09-0.27)
2 0.57(0.39-0.82) 0.28(0.18-0.44) 0.18(0.10-0.30) 0.16(0.09-0.27)
3 0.37(0.26-0.53) 0.39(0.26-0.59) 0.25(0.16-0.39) 0.19(0.11-0.34)
20% 1 0.80(0.54-1.14) 0.49(0.37-0.66) 0.43(0.31-0.60) 0.43(0.31-0.60)
2 0.80(0.56-1.14) 0.43(031-0.60) 0.40(0.29-0.54) 0.37(0.27-0.52)
3 0.70(0.50-0.96) 0.40(0.29-0.56) 0.32(0.26-0.53) 0.35(0.25-0.48)
5% Acephate (mg/L)
1 50.82(41.39-62.39) 36.27(27.30-48.20) 28.03(20.47-30.40) 17.60(12.85-24.11)
2 52.11(43.12-62.97) 41.48(32.48-52.41) 27.29(19.47-30.25) 19.54(14.87-25.68)
3 50.82(41.39-62.39) 36.27(27.30-48.20) 28.03(20.47-30.40) 17.60(12.85-24.11)
20% 1 62.21(50.93-75.97) 40.15(31.90-50.53) 32.10(25.20-40.80) 24.49(15.71-30.19)
2 62.24(50.30-77.02) 41.35(29.35-58.40) 34.64(23.00-52.17) 28.52(20.76-30.18)
3 55.11(45.65-66.54) 48.97(39.40-60.86) 35.92(27.63-46.70) 29.00(20.62-40.80)
Table 2: LC50 values and 95% confidence intervals of beta-cypermethrin and acephate to L. vannamei juveniles in renewal acute toxicity test exposed from 24 to 96 h.
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