Seasonal Variation in Fatty Acid and Amino Acid Composition of the Patagonian Marine Polychaete Abarenicola pusilla and Its By-Products

Table 1

Fatty acid content (mg g⁻¹ sample) from eviscerated whole body specimens. Each value represents the average value (n = 3) and the standard error.

FAME	Spring	Summer	Autumn	Winter
	Fatty acid content (mg FAME g^−1)
15 : 0, pentadecanoic acid	0.18 ± 0.03	0.25 ± 0.02	0.17 ± 0.01	0.15 ± 0.03
16 : 0, palmitic acid	1.14 ± 0.03^a	2.24 ± 0.01^b	0.99 ± 0.13^a	1.19 ± 0.12^a
16 : 1n − 7, palmitoleic acid	0.56 ± 0.01^a	0.99 ± 0.01^b	0.47 ± 0.09^a	0.45 ± 0.08^a
17 : 0, heptadecanoic acid	0.17 ± 0.02^a	0.24 ± 0.0^b	0.16 ± 0.01^a	0.16 ± 0.01^a
17 : 1n − 7, heptadecenoic acid	0.14 ± 0.02	0.15 ± 0.01	0.10 ± 0.01	0.08 ± 0.03
18 : 0, stearic acid	0.29 ± 0.03^ab	0.89 ± 0.08^c	0.18 ± 0.02^a	0.43 ± 0.07^b
18 : 1n − 9, oleic acid	0.51 ± 0.01^a	1.77 ± 0.19^b	0.36 ± 0.11^a	0.68 ± 0.23^a
20 : 1n − 9, eicosaenoic acid	0.46 ± 0.05	1.08 ± 0.38	0.25 ± 0.02	0.27 ± 0.04
18 : 3n − 3, α-linolenic acid	0.15 ± 0.02^b	0.15 ± 0.02^b	0.08 ± 0.02^a	0.07 ± 0.01^a
18 : 2n − 6, linoleic acid	0.22 ± 0.04	0.22 ± 0.03	0.17 ± 0.06	0.07 ± 0.01
20 : 4n − 6, arachidonic acid (ARA)	0.46 ± 0.01^c	0.61 ± 0.05^d	0.19 ± 0.02^b	0.05 ± 0.02^a
20 : 5n − 3, eicosapentaenoic acid (EPA)	0.69 ± 0.05^c	0.55 ± 0.04^bc	0.30 ± 0.06^ab	0.06 ± 0.02^a
22 : 6n − 3, docosahexaenoic acid (DHA)	0.15 ± 0.01	0.20 ± 0.11	0.07 ± 0.07	0.00 ± 0.00
Other SFA	0.49 ± 0.09	0.84 ± 0.12	0.21 ± 0.03	0.64 ± 0.06
Other MUFA	0.56 ± 0.01	1.17 ± 0.46	0.37 ± 0.02	0.28 ± 0.03
Other PUFA	0.18 ± 0.00	2.01 ± 0.27	0.09 ± 0.03	0.05 ± 0.02
FAME ratios
EPA/ARA	1.52 ± 0.28	0.91 ± 0.14	1.54 ± 0.13	1.24 ± 0.10
DHA/EPA	0.22 ± 0.02	0.34 ± 0.17	0.20 ± 0.20	0.00 ± 0.00
n − 3/n – 6	1.21 ± 0.12	0.96 ± 0.130	1.10 ± 0.10	0.90 ± 0.03