Frontiers in Zoology

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

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.

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ISSN: 1742-9994

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