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).

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

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

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

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

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

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

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

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

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

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

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

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

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

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

−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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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