. 2020 Jun 22;10:10014. doi: 10.1038/s41598-020-66003-y

Table 3.

Daily growth rate and proximate biochemical composition of Gracilaria gracilis cultivated in Bizerte lagoon (BL) and bay (BB) at different depth (from 0.25 m to 3.75 m). Values are means ± SD; n = 9. Means with the same superscripts are not significantly different (p = 0.05).

	Depth (m)	DGR (%)	Agar (%)	Sulfate (%)	3,6-AG(%)	Proteins (%)	R-PE (mgg⁻¹fw)
BL	0.25	2.33^a ± 0.03	18.40^a ± 1.44	7.97^e ± 0.54	32.41^a ± 1.39	22.06^a ± 10.72	0.25^a ± 0.05
BL	0.50	1.96^ab ± 0.46	18.07^a ± 2.25	8.70^bcde ± 0.83	32.79^a ± 1.81	17.10^a ± 6.96	0.24^a ± 0.04
BL	0.75	2.06^ab ± 0.32	20.70^a ± 0.26	8.43^cde ± 0.54	32.98^a ± 2.30	20.13^a ± 7.76	0.25^a ± 0.03
BL	1.00	1.96^ab ± 0.19	19.43^a ± 2.63	8.13^e ± 0.40	40.68^a ± 3.30	16.36^a ± 6.58	0.31^a ± 0.09
BL	1.25	1.75^abc ± 0.27	18.90^a ± 1.65	8.28^de ± 0.29	29.98^a ± 0.57	18.50^a ± 7.42	0.28^a ± 0.03
BL	1.50	1.58^bc ± 0.13	21.23^a ± 3.96	8.39^cde ± 0.17	31.47^a ± 1.34	16.56^a ± 6.30	0.31^a ± 0.06
BL	1.75	1.34^bc ± 0.39	17.43^a ± 2.67	9.42^abcd ± 0.24	32.64^a ± 1.15	21.86^a ± 9.56	0.36^a ± 0.16
BL	2.00	1.49^bc ± 0.27	19.27^a ± 1.36	9.58^abc ± 0.17	31.93^a ± 1.86	21.77^a ± 8.46	0.37^a ± 0.19
BL	2.25	1.42^bc ± 0.11	21.57^a ± 3.71	9.42^abcd ± 0.29	30.42^a ± 1.10	22.64^a ± 10.59	0.37^a ± 0.17
BL	2.50	1.53^bc ± 0.14	18.50^a ± 2.11	7.52^e ± 0.52	35.97^a ± 5.95	23.97^a ± 8.64	0.41^a ± 0.19
BL	2.75	1.43^bc ± 0.16	19.17^a ± 2.10	9.69^ab ± 0.46	36.43^a ± 0.63	29.63^a ± 8.23	0.43^a ± 0.21
BL	3.00	1.05^c ± 0.15	18.00^a ± 2.55	8.62^bcde ± 0.40	30.73^a ± 0.46	27.18^a ± 6.52	0.45^a ± 0.19
BL	3.25	1.05^cd ± 0.07	18.80^a ± 4.16	9.96^a ± 0.50	35.04^a ± 1.84	26.05^a ± 2.79	0.30^a ± 0.03
BL	3.50	0.57^d ± 0.25	19.07^a ± 0.95	7.97^e ± 0.37	27.26^a ± 0.53	22.30^a ± 3.09	0.32^a ± 0.05
BL	3.75	−0.16^e ± 0.61	19.27^a ± 1.82	9.96^a ± 0.70	32.12^a ± 1.52	24.20^a ± 4.05	0.32^a ± 0.05
BB	0.25	0.86^a ± 0.32	21.13^a ± 1.44	7.74^ab ± 2.60	45.82^abc ± 1.27	15.38^a ± 5.69	0.63^a ± 0.13
BB	0.50	1.03^a ± 0.48	24.03^a ± 2.25	5.38^ab ± 0.75	46.12^ac ± 2.78	15.47^a ± 3.85	0.64^a ± 0.11
BB	0.75	0.99^a ± 0.43	22.47^a ± 0.26	7.40^ab ± 2.38	40.78^bcd ± 0.81	27.74^a ± 0.47	0.65^a ± 0.09
BB	1.00	0.91^a ± 0.78	20.87^a ± 2.63	5.91^ab ± 0.46	41.31^abcd ± 0.41	16.30^a ± 4.70	0.73^a ± 0.22
BB	1.25	1.57^a ± 0.42	22.73^a ± 1.65	5.42^ab ± 1.37	39.94^bd ± 1.51	15.45^a ± 2.76	0.77^a ± 0.09
BB	1.50	1.32^a ± 0.39	23.40^a ± 3.96	8.28^a ± 1.85	40.05^d ± 1.93	25.39^a ± 6.42	0.81^a ± 0.15
BB	1.75	1.27^a ± 0.15	21.27^a ± 2.67	7.90^ab ± 1.79	46.96^a ± 4.52	18.14^a ± 3.04	0.82^a ± 0.41
BB	2.00	1.50^a ± 0.29	25.23^a ± 1.36	4.58^ab ± 0.71	39.83^bcd ± 0.30	19.23^a ± 6.00	0.82^a ± 0.49
BB	2.25	1.38^a ± 0.07	25.50^a ± 3.71	5.84^ab ± 2.89	37.96^d ± 0.35	28.88^a ± 10.19	0.82^a ± 0.43
BB	2.50	1.23^a ± 0.01	22.47^a ± 2.11	5.30^ab ± 0.86	42.19^abcd ± 2.94	17.06^a ± 1.09	0.93^a ± 0.50
BB	2.75	1.18^a ± 0.11	22.93^a ± 2.10	8.39^b ± 0.29	45.74^ac ± 1.52	20.87^a ± 5.09	0.96^a ± 0.56
BB	3.00	1.17^a ± 0.21	23.60^a ± 2.55	4.84^ab ± 1.32	36.74^d ± 2.29	23.44^a ± 4.41	0.97^a ± 0.49
BB	3.25	1.18^a ± 0.22	22.90^a ± 4.16	3.40^b ± 1.04	38.61^d ± 5.02	18.61^a ± 2.91	1.07^a ± 0.07
BB	3.50	1.09^a ± 0.23	24.90^a ± 0.95	5.19^ab ± 1.94	39.41^d ± 0.37	20.86^a ± 7.37	1.12^a ± 0.13
BB	3.75	1.19^a ± 0.24	26.23^a ± 1.82	4.50^ab ± 1.00	39.06^d ± 1.44	28.38^a ± 5.29	1.16^a ± 0.12

BL: the Bizerte Lagoon; BB:the Bizerte Bay; DGR: Daily Growth Rate;3,6-AG(%):3,6-anhydrogalactose; R-PE: R-phycoerythrin; SD: Standard deviation.