. 2018 Jan 4;8:1072. doi: 10.3389/fphys.2017.01072

Table 2.

Free amino acids composition (nmol mL⁻¹) in hemolymph of female E. sinensis subjected to different salinities for 40 days.

Free amino acids	Salinity
	0‰	6‰	12‰	18‰
Taurine	322.83 ± 24.85^b	390.59 ± 20.49^b	544.68 ± 32.73^a	355.22 ± 27.09^b
Aspartic acid	11.06 ± 1.18^c	11.42 ± 0.62^c	14.95 ± 1.41^b	20.44 ± 0.89^a
Threonine	47.12 ± 4.96^ab	52.21 ± 4.92^a	38.45 ± 3.60^b	57.73 ± 1.73^a
Serine	66.61 ± 6.27	65.53 ± 6.46	52.93 ± 2.69	66.43 ± 3.63
Asparagine	26.76 ± 2.28^c	48.93 ± 3.59^a	17.26 ± 1.91^d	38.82 ± 3.02^b
Glutamic acid	36.26 ± 1.69^b	46.29 ± 4.72^b	72.32 ± 3.11^a	65.24 ± 7.75^a
Glutamine	108.21 ± 9.13^c	181.98 ± 9.68^a	67.31 ± 5.51^d	139.58 ± 7.24^b
α-ABA	7.10 ± 0.49	9.23 ± 0.93	9.96 ± 1.21	7.59 ± 0.90
Proline	732.33 ± 55.91^b	1007.50 ± 50.26^a	714.47 ± 46.02^b	710.21 ± 41.95^b
Glycine	279.60 ± 28.66	246.19 ± 9.08	276.68 ± 15.51	246.71 ± 21.81
Alanine	440.55 ± 38.41	595.31 ± 43.40	493.92 ± 41.11	492.99 ± 72.60
Citrulline	3.39 ± 0.35^c	6.52 ± 0.78^a	5.39 ± 0.48^ab	3.83 ± 0.32^bc
α-AAA	4.54 ± 0.57	4.28 ± 0.25	4.23 ± 0.93	3.66 ± 0.17
Valine	32.88 ± 2.95^bc	49.54 ± 3.56^a	25.31 ± 2.88^c	38.02 ± 3.47^b
Methionine	4.28 ± 0.14^b	4.98 ± 0.36^a	0.87 ± 0.07^d	3.11 ± 0.23^c
Cystathionine	3.57 ± 0.70^a	2.01 ± 0.29^b	1.53 ± 0.19^b	1.79 ± 0.20^b
Isoleucine	19.75 ± 1.35^b	25.39 ± 2.11^a	14.46 ± 1.47^b	18.14 ± 1.08^ab
Leucine	27.23 ± 2.16^b	37.98 ± 4.01^a	21.32 ± 2.84^b	26.61 ± 1.17^b
Tyrosine	1.51 ± 0.23	1.40 ± 0.05	1.40 ± 0.09	1.62 ± 0.07
Phenylalanine	15.99 ± 1.28^b	23.42 ± 0.52^a	10.49 ± 0.89^c	16.13 ± 1.01^b
ß-Alanine	7.18 ± 0.37^b	28.77 ± 3.71^a	21.74 ± 0.37^a	24.88 ± 2.28^a
ß-AiBA	1.44 ± 0.16^b	1.77 ± 0.20^b	2.49 ± 0.11^a	2.00 ± 0.29^ab
Tryptophan	2.25 ± 0.26^b	1.98 ± 0.17^b	1.00 ± 0.07^c	3.77 ± 0.52^a
Ornithine	14.87 ± 1.68	16.33 ± 1.48	13.26 ± 0.82	17.17 ± 1.79
Lysine	42.14 ± 4.71^a	44.78 ± 3.07^a	23.58 ± 1.44^b	29.10 ± 2.91^b
Histidine	30.03 ± 1.79^b	38.86 ± 3.32^a	24.26 ± 2.11^b	28.35 ± 2.22^b
Arginine	232.16 ± 12.66^b	292.50 ± 28.25^a	211.17 ± 13.48^b	174.81 ± 13.83^b
TFAAs	2500.60 ± 101.98^b	3238.10 ± 41.70^a	2686.50 ± 116.63^b	2594.30 ± 145.71^b

Data are presented as mean ± SE. Values within the same row with different letters mean significant difference (P < 0.05). Free amino acid contents < 1 nmol mL⁻¹ are not listed in this table. α-ABA: α- amino-n-butyric acid; α-AAA: α-aminoadipicacid; ß-AiBA: β-aminoisobutyric acid; TFAAs: total free amino acids.