Table 3.
Fatty acid profile (% total fatty acids) of the two species of sea snails according to season of sampling (SE) and species (SP).
| Month of Sampling (SE) | Species (SP) | Error | ||||||
|---|---|---|---|---|---|---|---|---|
| November | March | N. mutabilis | H. reticulata | MSE | SE | SP | SE × SP | |
| SFA | ||||||||
| 14:0 | 6.98 | 7.52 | 6.90 | 6.84 | 0.7230 | 0.2140 | 0.4320 | n.s. |
| 15:0 | 0.41 | 0.49 | 0.46 | 0.52 | 0.0734 | 0.0400 | 0.0120 | n.s. |
| 16:0 | 29.08 | 26.29 | 29.14 | 27.72 | 0.9611 | 0.930 | 0.0400 | n.s. |
| 17:0 | 1.22 | 1.08 | 1.33 | 1.62 | 0.3223 | 0.014 | 0.0140 | n.s. |
| 18:0 | 8.20 | 9.49 | 8.98 | 9.45 | 0.5514 | 0.246 | 0.0820 | n.s. |
| 20:0 | 0.34 | 0.35 | 0.30 | 0.28 | 0.1504 | 0.160 | 0.1000 | n.s. |
| Total SFA | 46.24 | 45.22 | 47.11 | 46.43 | 0.243 | 0.147 | 0.0036 | n.s. |
| MUFA | ||||||||
| 14:1 | 0.20 | 0.22 | 0.02 | 0.28 | 0.14 | 0.022 | 0.0220 | n.s. |
| 16:1 | 7.90 | 7.81 | 6.93 | 7.04 | 0.87 | 0.385 | 0.4950 | n.s. |
| 17:1 | 1.23 | 1.19 | 1.48 | 1.04 | 0.14 | 0.013 | 0.0420 | n.s. |
| 18:1 | 10.72 | 12.45 | 11.75 | 9.24 | 1.70 | 0.570 | 1.1600 | n.s. |
| 20:1 | 2.39 | 2.24 | 2.51 | 2.57 | 0.20 | 0.121 | 0.1020 | n.s. |
| Total MUFA | 22.44 | 23.91 | 22.69 | 20.17 | 1.95 | 0.137 | 0.0245 | n.s. |
| PUFA n6 | ||||||||
| 18:2 n6 | 1.51 | 1.42 | 1.54 | 1.05 | 0.23 | 0.199 | 0.1730 | n.s. |
| 18:3 n6 | 0.25 | 0.25 | 0.27 | 0.16 | 0.18 | 0.047 | 0.0310 | n.s. |
| 20:4 n6 ARA | 3.90 B | 6.86 A | 2.83 B | 6.92 A | 1.04 | 0.001 | 0.0009 | n.s. |
| Total PUFAn6 | 5.66 B | 8.53 A | 4.64 B | 8.13 A | 0.23 | 0.0001 | 0.0001 | n.s. |
| PUFA n3 | ||||||||
| 18:3 n3 | 2.92 | 2.63 | 3.01 | 3.08 | 0.40 | 0.005 | 0.4050 | n.s. |
| 20:5 n3 EPA | 14.13 A | 12.04 B | 13.86 A | 12.89 B | 1.02 | 0.0003 | 0.0005 | n.s. |
| 22:5 n3 DPA | 0.99 | 0.87 | 0.81 | 0.86 | 0.10 | 0.0260 | 0.0260 | n.s. |
| 22:6 n3 DHA | 5.20 | 4.73 | 5.45 | 5.00 | 0.54 | 0.3850 | 0.1050 | n.s. |
| Total PUFAn3 | 23.24 A | 20.27 B | 23.13 | 21.83 | 0.78 | 0.0001 | 0.2382 | n.s. |
| Others | 2.42 | 2.07 | 2.43 | 3.08 | 0.25 | 0.4782 | 0.4710 | n.s. |
| n3/n6 | 4.10 A | 2.38 B | 4.98 A | 2.68 B | 0.26 | 0.0001 | 0.0001 | n.s. |
MSE = Mean Standard Error; A, B = p < 0.01; n.s. = not significant. Fatty acids are reported as numbers of C atoms (14–22) and numbers of double bonds (1–6) presents in the molecular structure, while n3 and n6 indicated the position of double bonds. SFA = Saturated Fatty Acids; MUFA = Monounsaturated fatty acids; PUFA = Polyunsaturated Fatty Acids; ARA = Arachidonic Acid; EPA = Eicosapentaenoic acid; DPA = Docosapentaenoic acid; DHA = Docosahexaenoic fatty acid.