Effects of constant and diel cyclic temperatures on the liver and intestinal phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss during seawater acclimation

Ge, Jian; Zhou, Yangen; Huang, Ming; Gao, Qinfeng; Dong, Yunwei; Dong, Shuanglin

doi:10.1186/s40850-021-00086-6

Table 3 Liver PLFA composition (%) in rainbow trout at different sampling points at diel cyclic temperatures

From: Effects of constant and diel cyclic temperatures on the liver and intestinal phospholipid fatty acid composition in rainbow trout Oncorhynchus mykiss during seawater acclimation

SP	FW-42			SW-1			SW-21
Temp	CT	VT2	VT4	CT	VT2	VT4	CT	VT2	VT4
Saturated fatty acid
C14:0	0.96^b	1.00^b	0.97^b	1.18^a	1.16^a	1.13^a	1.07^ab	1.19^a	1.11^a
C16:0	17.26^AB	15.98^Bc	17.90^Aa	16.95	17.40^b	16.50^b	18.41	18.77^a	18.26^a
C17:0	0.61^ab	0.53	0.71^a	0.44^ABb	0.57^A	0.26^Bb	0.74^a	0.61	0.67^a
C18:0	6.23^b	6.21^b	6.27^c	7.66^a	7.63^a	7.35^b	8.09^a	7.70^a	8.20^a
C20:0	0.21	0.19^a	0.19	0.13	0.13^ab	0.14	0.15	0.09^b	0.15
C22:0	0.12	0.09	0.16	0.08	0.12	0.08	0.10	0.09	0.08
C24:0	0.52^Bb	0.94^A	0.79^ABa	0.76^a	0.82	0.38^b	0.63^Aab	0.42^B	0.48^ABb
ƩSFA	25.92^b	24.94^b	27.00^b	27.20^ab	27.82^a	25.84^b	29.19^a	28.87^a	28.96^a
Monounsaturated fatty acid
C14:1n5	0.79^b	0.78	0.98^b	0.60^b	0.92	0.59^c	1.42^a	1.01	1.28^a
C16:1n7	2.61^a	2.54^a	2.70^a	1.42^b	2.04^ab	2.14^ab	1.23^b	1.34^b	1.59^b
C17:1n7	0.23	0.19	0.20	0.23^A	0.20^A	0.17^B	0.19	0.22	0.21
C18:1n9	2.01^a	2.09^a	2.11^a	1.51^Bb	1.68^ABb	1.86^Aa	1.60^b	1.55^b	1.56^b
C20:1n9	0.20	0.17	0.15	0.18	0.16	0.20	0.18	0.13	0.17
C22:1n9	0.08	0.05	0.08	0.06	0.05	0.05	0.06	0.06	0.04
C24:1n9	2.81	2.91	2.62^b	2.88	2.75	2.71^b	3.18	3.01	3.19^a
ƩMUFA	8.72^a	8.72^a	8.84^a	6.88^Bb	7.80^Ab	7.72^Ab	7.88^a	7.32^b	8.04^b
Polyunsaturated fatty acid
C18:2n6	12.89^a	12.86^a	12.92^a	10.22^Bb	12.00^Aa	13.23^Aa	9.18^b	8.89^b	9.58^b
C18:3n3	0.10	0.10	0.10^ab	0.15^A	0.10^B	0.08^Bb	0.14	0.14	0.13^a
C18:3n6	0.16	0.16	0.13	0.13	0.14	0.15	0.15	0.13	0.10
C20:2n6	1.26^Aba	1.48^Aa	1.12^B	1.18^a	1.21^ab	1.36	0.79^b	0.97^b	1.18
C20:3n3	0.91^b	0.84^b	0.84^b	1.33^Aa	0.96^Bb	0.94^Bb	1.24^a	1.28^a	1.21^a
C20:3n6	1.93^A	1.50^Bab	1.29^Bb	2.03	1.83^a	2.06^a	1.82^A	1.14^Bb	1.54^ABb
C20:4n6	2.92^Ab	2.78^Ac	1.85^Bc	3.37^b	3.53^b	3.06^b	5.19^a	4.93^a	4.63^a
C20:5n3	2.69^b	2.52	2.12^b	3.01^ab	2.90	2.80^a	3.64^Aa	2.60^B	2.92^Ba
C22:2n6	0.34	0.33	0.38	0.23	0.37	0.28	0.23	0.29	0.30
C22:6n3	42.16^b	43.78^a	43.4^a	44.29^Aa	41.33^Cb	42.47^Bab	40.54^Bb	43.45^Aa	41.39^Bb
ƩPUFA	65.36	66.34^a	64.16^b	65.92	64.38^ab	66.44^a	62.93	63.81^b	63.00^b

Note: Values represent the mean of 4 replicates. Different lowercase letters indicate significant differences (P < 0.05) among different treatments at the same time, and different capital letters indicate significant differences at different times at the same treatment. Data containing mean ± SD are included in Additional file 2. FW-42 End of growth trial, SW-1 One day after salinity reached 30, SW-21 21 days after salinity reached 30, SFA Saturated fatty acid, MUFA Monounsaturated fatty acid, PUFA Polyunsaturated fatty acid

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