Skip to main content

Table 1 Regeneration of various structures after amputation of the posterior end in Isodiametra pulchra

From: Posterior regeneration in Isodiametra pulchra (Acoela, Acoelomorpha)

Days 2 3 4
Samples D1 D2 D3 D4 D5 M E1 E2 E3 E4 E5 E6 E7 M F1 F2 F3 F4 F5 M
cop 25 25 25 25 0 20 25 25 25 0 25 25 50 25 25 50 0 25 25 25
sph 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
bn 25 0 0 0 0 5 0 0 50 0 0 0 100 21.4 50 0 0 25 25 20
# snr 29 25 0 21 16 18.8 37 37 42 23 33 45 35 36.0 27 33 36 40 35 34.2
Days 5 6
Samples G1 G2 G3 G4 G5 G6 M H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 M
cop 75 75 25 50 75 0 50 25 25 75 50 0 100 100 100 100 100 100 70
sph 0 0 0 0 0 0 0 0 0 0 0 0 50 50 25 0 0 0 11
bn 100 100 0 0 100 0 50 0 0 50 50 0 100 100 100 100 100 100 64
# snr 36 37 - - 35 38 36.5 - - 39 - - 57 53 38 36 32 31 40.9
Days 7 8
Samples I1 I2 I3 I4 I5 I6 I7 I8 I9 I10 M J1 J2 J3 J4 J5 J6 J7 J8 M
cop 100 0 100 100 100 100 100 100 100 100 0,90 100 100 100 100 100 100 100 100 100
sph 0 0 100 75 25 50 100 75 50 100 58 100 100 100 0 100 0 100 0 63
bn 100 0 100 100 50 100 100 100 100 100 85 100 100 100 0 100 100 100 100 88
# snr 50 20 27 40 38 - 41 - - - 36.0 - - 39 - 50 39 46 58 46.8
Days 9 10 controls
Samples K1 K2 K3 K4 K5 M L1 L2 L3 L4 L5 M 1 2 3 4 5 6 7 M
cop 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
sph 100 100 25 100 100 85 100 100 100 100 100 100 100 100 100 100 100 100 100 100
bn 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
# snr 50 56 40 44 42 46.4 - - - 42 68 55.0 - 53 - 56 44 48 50 50.2
  1. After a given time of regeneration (bold number on top) specimens (designated as D1, D2, D3,…) were checked for the presence (100), absence (0) or grades (given as %) of differentiation of the male copulatory organ (cop), the female sphincter (sph), the bursal nozzle (bn) and the number of swallow’s nest receptors at the posterior end (# snr). Values for receptors marked with (-) signify that the receptors were too short to be counted unambiguously. The mean (M) for each day of regeneration and the control animals is given in bold in the last column for each day of regeneration. All values for day 1 (A1–A6), day 1.25 (B1–B5) and day 1.5 (C1–C5) are zero and have been omitted from the table.