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Table 2 Mean lethal concentrations (50%) (LC 50 ) of commercial disperse red 1 in newborn and adult G. tigrina tests

From: Effects of a textile azo dye on mortality, regeneration, and reproductive performance of the planarian, Girardia tigrina

  LC50(mg/L)
Test Newborn Adult
  24 h 48 h 72 h 96 h 24 h 48 h 72 h 96 h
I 127 127 74 67 * 201 179 159
II 120 91 79 79 * 207 156 148
III 131 111 87 80 * 198 162 150
Mean 126 110 80 75   202 167 152
SDa 5.6 18 6.5 7.2   4.6 12 5.8
CV (%)b 4.4 16.4 8.1 9.6   2.2 7.2 3.8
  1. Asterisk indicates no mortality was observed. aSD standard deviation of the mean. bCoefficient of variation. The tests indicate as I, II, and III correspond to independent assays.