Table 1 Concentrations of long chain fatty acid in adipose tissue of the Nile crocodile (Crocodylus niloticus) with and without pansteatitis, compared with that of the liver. Values expressed as mean ± SEM in mg/dl

C13:0

Methyltridecanoate

(Tridecanoic acid)

Nil

Nil

Nil

Nil

Nil

0.40 ± 0.20

C14:0

Myristic acid

(Tetradecanoic acid)

13.53 ± 1.44

14.15 ± 1.63

16.17 ± 1.63

10.96 ± 1.36

3.41 ± 1.19

126.8 ± 12.23

P < 0.0001

C14:1

Myristoleic acid

(Tetradecenoic acid)

Nil

0.30 ± 0.15

1.70 ± 1.38

0.25 ± 0.16

0.62 ± 0.35

1.00 ± 0.47

ns

C15:0

Pentadecylic acid

2.80 ± 1.15

1.94 ± 0.17

2.50 ± 0.13

1.44 ± 0.17

4.10 ± 1.30

25.45 ± 2.76

P < 0.0001

C16:0

Palmitic acid

(Hexadecanoic acid)

274.80 ± 20.57

301.7 ± 16.38

309.3 ± 7.82

249.2 ± 8.23

101.4 ± 11.15

741.0 ± 62.94

P < 0.0001

C16:1

Palmitoleic acid

(cis-Δ⁹-Hexadecenoic acid)

48.47 ± 4.76

56.61 ± 3.92

55.81 ± 2.46

49.04 ± 6.99

8.56 ± 1.95

214.70 ± 27.59

P < 0.0001

C17:0

Margaric acid

2.67 ± 0.41

3.95 ± 0.35

4.03 ± 0.39

2.76 ± 0.51

1.55 ± 0.37

21.52 ± 1.82

P < 0.0001

C17:1

Heptadecenoic acid

0.03 ± 0.15

2.20 ± 0.78

0.50 ± 0.0.16

0.75 ± 0.41

Nil

18.60 ± 2.12

P < 0.0001

C18:0

Stearic acid

(Octadecanoic acid)

76.86 ± 3.99

42.93 ± 14.66

96.55 ± 2.18

68.81 ± 9.94

23.34 ± 7.21

107.3 ± 10.83

P < 0.0001

C18:1n9c

Oleic acid

(cis-Δ⁹–Octadecenoic acid)

381.3 ± 17.93

455.3 ± 30.14

471.3 ± 17.4

390.0 ± 47.11

107.4 ± 14.17

582.1 ± 66.7

P < 0.0001

C18:1n9t

Elaidic acid

(trans-Δ⁹-Octadecenoic acid)

Nil

Nil

Nil

Nil

2.34 ± 3.49

Nil

C18:2n6c

Linoleic acid

(Methyl lineoleate)

207.3 ± 13.31

255.8 ± 14.10

249.1 ± 7.93

236.7 ± 16.85

64.88 ± 8.89

76.18 ± 11.18

P < 0.0001

C20:0

Arachidic acid

(Eicosanoic acid)

0.90 ± .34

1.00 ± 0.39

1.20 ± 0.41

22.25 ± 21.42

Nil

6.47 ± 0.73

ns

C18:3n6

γ Linolenic acid

4.10 ± 1.25

4.70 ± 1.20

4.39 ± 1.15

3.34 ± 1.37

3.43 ± 1.13

6.79 ± 0.69

ns

C18:3n3

α Linolenic acid

7.87 ± 0.73

9.65 ± 0.80

10.0 ± 0.60

8.14 ± 1.07

0.90 ± 0.38

48.11 ± 8.30

P < 0.0001

C20:1n9

Eicosaenoic acid

4.32 ± 0.59

4.71 ± 0.34

4.78 ± 0.38

3.86 ± 0.64

0.50 ± 0.22

18.46 ± 3.55

P < 0.0001

C20:2

Eicosadienoic acid

1.00 ± 0.42

2.32 ± 0.59

2.03 ± 0.65

2.14 ± 0.92

0.80 ± 0.36

87.03 ± 17.78

P < 0.0001

C22.0

Behenic acid

(Docosanoic acid)

0.20 ± 0.13

0.40 ± 0.22

0.50 ± 0.16

0.37 ± 0.81

1.00 ± 0.39

Nil

ns

C20:3n6

Eicosatrienoic acid

3.06 ± 0.70

4.35 ± 0.90

4.26 ± 0.93

2.94 ± 1.19

6.70 ± 0.81

8.83 ± 1.70

P < 0.01

C20:3n3

Eicosatrienoic acid

Nil

Nil

Nil

Nil

Nil

4.30 ± 0.88

C20:4n6

Arachidonic acid

5.18 ± 0.85

6.34 ± 1.18

5.94 ± 0.97

4.72 ± 1.42

12.02 ± 2.00

18.52 ± 3.57

P < 0.0001

C24:0

Lignoceric acid

(Tetracosanoic acid)

Nil

Nil

Nil

2.00 ± 1.68

Nil

47.00 ± 13.14

C24:1

Nervonic acid

(cis-15-tetracosenoic acid)

0.80 ± 0.20

1.00 ± 0.0

1.00 ± 0.0

0.75 ± 0.25

1.81 ± 0.24

1.20 ± 0.20

P < 0.01

C20:5n3

Eicosapentaenoic acid

5.24 ± 0.98

6.96 ± 1.59

7.88 ± 1.26

5.50 ± 1.43

2.54 ± 0.73

94.81 ± 18.64

P < 0.0001

C22:6n3

Docohexaenoic acid

8.60 ± 0.97

8.67 ± 1.55

10.03 ± 1.11

5.99 ± 1.38

3.06 ± 0.61

300.7 ± 57.57

P < 0.0001

1033.0 ± 54.7

1217.0 ± 67.6

1255.0 ± 30.1

1059.0 ± 29.1

354 ± 42.3

2551 ± 289.3

P < 0.0001