. 2013 Feb 7;8(2):e55736. doi: 10.1371/journal.pone.0055736

Table 9. Frequencies (%) of individuals with altered counts, individuals with deformed shape, and individuals with both altered counts and deformed shapes of bones underwent indirect ossification (i.e., endo- or perichondral ossification), per lot.

		Group 1		Group 2		Group 3				Group 4
		INIT06	LVIT01	INIT07	LVIT02	INIT19	LVIT04	INIT18	LVIT05	INGR01	MEGR04
N.		55	66	123	121	105	40	105	105	134	126
Anomalous number of hypurals		n.c.	n.c.	n.c.	n.c.	0.95				3.7	4.0
Anomalous number and shape of hypurals (G9, G9*, G26)		n.c.	n.c.	n.c.	n.c.					2.2	4.0
Anomalous shape of hypurals ¹ (G9, G9*, G26)		69.1	87.9	56.9	70.2	32.4	15.0	44.8	34.3	84.3	69.8
Anomalous number of epurals		n.c.	n.c.	n.c.	n.c.	1.9	50.0	62.9	50.5	21.6	42.9
Anomalous number and shape of epurals (G10)		n.c.	n.c.	n.c.	n.c.		12.5	21.9	14.3		15.1
Anomalous shape of epurals (G10)		83.6	40.9	50.4	18.8	42.9	27.5	36.2	35.2	7.5	37.3
Anomalous shape of vertebral arches (5, 5, 6, 6, 7, 7*)		83.6	42.4	44.7	27.3	85.7	77.5	63.8	84.8	43.3	35.7
Anomalous number of fin pterygiophores	Pectoral (Radials)	n.c.	n.c.	n.c.	n.c.	0.9		0.9	1.9
	Dorsal	n.c.	n.c.	n.c.	n.c.	81.9	80.0	40.0	67.6
	Anal	n.c.	n.c.	n.c.	n.c.	3.8				1.5	2.4
Anomalous number and shape of fin pterygiophores (8)	Pectoral (Radials)	n.c.	n.c.	n.c.	n.c.	0.9			0.9
	Dorsal	n.c.	n.c.	n.c.	n.c.	41.9	35.0	16.2	17.1
	Anal	n.c.	n.c.	n.c.	n.c.	1.9				0.7
Anomalous shape of fin pterygiophores (G9*, 8)	Caudal (Parahypural ² )	n.c.	n.c.	n.c.	n.c.						0.0
	Pectoral (Radials)					13.3		3.8	0.9	5.2	1.6
	Dorsal	63.6	15.1	7.3	6.6	52.4	40.0	23.8	22.9	9.0	9.5
	Anal	36.4	3.0	4.9	2.5	10.5	10.0	8.6	8.6	7.5	5.6

When the observed value is 0, the cell has been left empty to make easier the reading.

N = number of individuals considered, per lot; n.c. = data not collected; codes in brackets indicate the anomalies considered (see Table 2).

hypurals are reported to ossify endochondrally in zebrafish (Danio rerio) [78]–[80], in Senegalese sole (Solea senegalensis) [80], in gilthead seabream [81] but other authors found that ossification is perichondral in Nile tilapia and desert pupfish [82];

parahypural (a ventral support of caudal fin) is reported [82] as undergoing perichondral ossification, but also that it ossifies endochondrally [71].