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Table 2 Sex-inducing activity of the extracts separated on a commercial octadecylsilane (ODS) column

From: Sex-inducing effect of a hydrophilic fraction on reproductive switching in the planarian Dugesia ryukyuensis (Seriata, Tricladida)

Test food Number of test worms that developed a pair of ovaries (%) Number of test worms that developed a copulatory apparatus (%)
Dugesia ryukyuensis Fr. M0 50/50 (100.0 ± 0.0) 50/50 (100.0 ± 0.0)
  Fr. M10 47/49 (96.0 ± 4.0) 44/49 (89.5 ± 6.5)
  Fr. M30 0/48 (0.0 ± 0.0) 0/48 (0.0 ± 0.0)
  Fr. M100 0/48 (0.0 ± 0.0) 0/48 (0.0 ± 0.0)
  Fr. H 0/50 (0.0 ± 0.0) 0/50 (0.0 ± 0.0)
Bdelloceplala brunnea Fr. M0 50/50 (100.0 ± 0.0) 44/50 (88.0 ± 8.0)
  Fr. M10 45/49 (91.8 ± 4.3) 39/49 (79.6 ± 4.5)
  Fr. M30 0/50 (0.0 ± 0.0) 0/50 (0.0 ± 0.0)
  Fr. M100 0/48 (0.0 ± 0.0) 0/48 (0.0 ± 0.0)
  Fr. H 0/50 (0.0 ± 0.0) 0/50 (0.0 ± 0.0)
  Minced worms 49/49 (100.0 ± 0.0) 47/49 (96.0 ± 4.0)
Chicken liver   0/50 (0.0 ± 0.0) 0/50 (0.0 ± 0.0)
  1. The extracts were obtained as described in Figure 1. See Materials and methods for test food. Twenty-five test worms were also fed approximately 400 mg of minced worms and chicken liver, respectively, for 4 weeks. Means and standard errors of duplicated experiments are shown. Fr., fraction.