The Scientific World Journal / 2012 / Article / Tab 1

Research Article

Impact of Cypermethrin on Fingerlings of Common Edible Carp (Labeo rohita)

Table 1

Toxicity of cypermethrin against fingerlings of fish Labeo rohita.

Exposure periodsEffective dose (LC values, μg/L)Limits (μg/L)Slope value 𝑔 ” factor 𝑡 ” ratioHeterogeneity
LCLUCL

6 h(i) LC10 = 0.2030.1730.225 6 . 3 3 ± 0 . 7 7 0.0568.270.34
(ii) LC50 = 0.3230.3020.347
(iii) LC90 = 0.5150.4610.610

12 h(i) LC10 = 0.1890.1660.207 7 . 6 4 ± 0 . 8 0 0.0429.520.32
(ii) LC50 = 0.2780.2610.295
(iii) LC90 = 0.4090.3780.457

18 h(i) LC10 = 0.1720.1520.187 8 . 9 2 ± 0 . 9 4 0.0439.460.29
(ii) LC50 = 0.2400.2250.254
(iii) LC90 = 0.3340.3110.367

24 h(i) LC10 = 0.1540.1360.168 8 . 4 1 ± 0 . 2 9 0.0598.050.13
(ii) LC50 = 0.2050.1930.217
(iii) LC90 = 0.2730.2540.301

There was no mortality in control groups.
Batches of ten fishes were exposed to different concentrations of cypermethrin.
Concentrations given are the final concentrations (w/v) in aquarium water.
Regression coefficient showed that there was significant ( 𝑃 < 0 . 0 5 ) negative correlation between exposure periods and different LC values.
LCL: lower confidence limit; UCL: upper confidence limit.

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