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Table 1 Sex-inducing activity of the precipitates from samples extracted with phosphate-buffered saline (PBS)

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

ppt-1

44/49 (89.8 ± 2.3)

1/49 (2.0 ± 2.0)

 

ppt-2

21/50 (42.0 ± 6.0)

0/50 (0.0 ± 0.0)

Bdellocephala brunnea

ppt-1

36/50 (72.0 ± 12.0)

0/50 (0.0 ± 0.0)

 

ppt-2

4/49 (8.1 ± 3.9)

0/49 (0.0 ± 0.0)

 

Minced worms

49/49 (100.0 ± 0.0)

47/49 (96.0 ± 4.0)

  1. The precipitates were obtained as described in Figure 1. Twenty-five test worms were fed approximately 400 mg of each sample for 4 weeks. Means and standard errors of duplicated experiments are shown. ppt, precipitate.
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Frontiers in Zoology

ISSN: 1742-9994