. 2019 Jul 3;14(7):e0219260. doi: 10.1371/journal.pone.0219260

Table 2. The principal fatty acid profiles (% total fatty acids) of the neutral lipids and polar lipids in the gonads of adult male E. sinensis.

Fatty acids	Neutral lipids				Polar lipids
Fatty acids	0 ‰	6 ‰	12 ‰	18 ‰	0 ‰	6 ‰	12 ‰	18 ‰
C16:0	13.17 ± 0.28	13.22 ± 1.07	14.55 ± 0.30	13.77 ± 0.68	9.51 ± 0.06	10.34 ± 0.95	10.41 ± 0.87	9.00 ± 1.14
C18:0	8.17 ± 0.20	8.04 ± 0.14	7.97 ± 0.14	8.37 ± 0.13	7.37 ± 0.34^ab	6.87 ± 0.36^b	7.06 ± 0.17^b	8.22 ± 0.22^a
∑SFA	22.96 ± 0.49	22.91 ± 1.27	24.34 ± 0.22	23.85 ± 0.82	19.55 ± 0.27	19.91 ± 0.24	20.75 ± 0.66	20.32 ± 0.72
C16:1	3.76 ± 0.08	4.13 ± 0.58	3.78 ± 0.11	4.02 ± 0.47	3.44 ± 0.27	3.92 ± 0.76	3.73 ± 0.91	2.83 ± 0.82
C18:1n9	21.59 ± 0.10	20.98 ± 1.09	21.89 ± 0.31	22.04 ± 0.35	16.05 ± 0.54	17.06 ± 1.23	16.91 ± 0.71	16.76 ± 1.16
C18:1n7	5.24 ± 0.13	5.10 ± 0.25	5.44 ± 0.11	5.42 ± 0.39	3.72 ± 0.02	3.72 ± 0.15	3.74 ± 0.09	3.86 ± 0.37
C20:1n9	1.03 ± 0.01	1.13 ± 0.09	0.79 ± 0.04	0.89 ± 0.12	1.55 ± 0.05	1.26 ± 0.09	1.40 ± 0.18	1.40 ± 0.05
∑MUFA	32.25 ± 0.06	31.94 ± 1.86	32.60 ± 0.34	33.00 ± 1.12	25.74 ± 0.79	26.98 ± 2.05	26.95 ± 1.37	25.81 ± 2.33
C18:2n6	7.56 ± 0.30	7.26 ± 0.79	7.93 ± 0.29	8.79 ± 0.74	7.25 ± 0.64	7.45 ± 0.78	6.58 ± 0.32	7.03 ± 0.95
C18:3n3	0.83 ± 0.02	0.98 ± 0.05	0.89 ± 0.04	1.00 ± 0.05	0.77 ± 0.06	0.85 ± 0.12	0.72 ± 0.06	0.75 ± 0.08
C20:2n6	1.48 ± 0.02	1.47 ± 0.19	1.38 ± 0.02	1.52 ± 0.11	3.03 ± 0.01	2.79 ± 0.29	3.04 ± 0.08	3.03 ± 0.21
C20:4n6	11.47 ± 0.17	12.52 ± 0.98	11.57 ± 0.45	11.62 ± 1.74	13.54 ± 0.63	13.82 ± 1.43	14.39 ± 1.32	16.10 ± 2.08
C20:5n3	13.52 ± 0.03^a	11.94 ± 1.08^ab	10.57 ± 0.84^b	10.89 ± 0.50^b	12.10 ± 0.45	10.99 ± 1.33	10.21 ± 1.02	11.78 ± 0.59
C22:5n3	0.18 ± 0.01	0.19 ± 0.01	0.18 ± 0.01	0.18 ± 0.01	0.99 ± 0.23	1.07 ± 0.12	1.03 ± 0.40	1.09 ± 0.14
C22:6n3	3.05 ± 0.06	2.72 ± 0.06	2.70 ± 0.29	2.78 ± 0.12	5.74 ± 0.03	5.20 ± 0.20	4.96 ± 0.57	4.85 ± 0.06
∑PUFA	38.26 ± 0.19	37.25 ± 1.49	35.38 ± 1.28	36.95 ± 1.71	45.04 ± 0.37	43.92 ± 2.26	42.87 ± 2.66	46.24 ± 2.60
∑n-3PUFA	17.76 ± 0.05^a	16.00 ± 1.11^ab	14.50 ± 1.10^b	15.02 ± 0.59^ab	20.07 ± 0.17	18.60 ± 1.56	17.23 ± 1.98	19.06 ± 0.41
∑n-6PUFA	20.51 ± 0.14	21.24 ± 0.38	20.88 ± 0.17	21.93 ± 1.12	24.97 ± 0.21	25.32 ± 0.70	25.64 ± 0.68	27.18 ± 2.19
n-3/n-6	0.87 ± 0.01^a	0.76 ± 0.07^ab	0.69 ± 0.05^b	0.69 ± 0.02^b	0.80 ± 0.01	0.74 ± 0.05	0.67 ± 0.06	0.70 ± 0.04
∑LC-PUFA	28.39 ± 0.14	27.54 ± 2.13	25.19 ± 1.60	25.64 ± 2.38	33.87 ± 1.08	32.71 ± 2.85	32.41 ± 2.97	35.32 ± 3.43
Unknown	6.53 ± 0.24	7.91 ± 1.63	6.64 ± 0.33	6.20 ± 0.24	9.54 ± 1.26	9.19 ± 0.54	9.03 ± 0.88	7.60 ± 1.15

Data are presented as mean ± SE (n = 2). Values within the same row with different letters mean significant difference. Fatty acids contents < 0.5% are not listed in this table. ∑SFA: total saturated fatty acids; ∑MUFA: total monounsaturated fatty acids; ∑PUFA: total polyunsaturated fatty acids; ∑LC-PUFA: total long chain polyunsaturated fatty acids.