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Table 2 The mean and range (minimum and maximum) of the body weight, total length and condition factor (CF) of sprat and herring with sampling areas (the Baltic Proper, Bothnian Sea and Gulf of Finland), seasons (autumn and spring) and age groups combined, and the lipid content (in wet weight), total thiamine concentration, and the contents of individual fatty acids and their sums (i.e., the main FA groups) in age group pools of sprat (17 pools, each consisting of 12–92 specimens) and herring (24 pools, each consisting of 7–133 specimens)

From: Fatty acid composition of sprat (Sprattus sprattus) and herring (Clupea harengus) in the Baltic Sea as potential prey for salmon (Salmo salar)

  Sprat p < Herring
Mean Range Mean Range
Weight, g 8.38 2.40–12.0 18.1 2.71–42.27
Length, mm 113.4 79–130 140.2 83–183
CF 0.55 0.45–0.69 0.57 0.48–0.69
Lipid, % 9.32 1.9017.3 0.001 5.56 2.01–8.80
Total thiamine, nmol g−1 5.002 2.519–9.434 ns 4.649 2.538–7.213
Saturated FAs (SFA)
14:0, mg g−1 3.55 0.60–5.92 0.05 2.53 1.15–3.85
16:0, mg g−1 20.01 4.01–37.42 0.01 11.90 4.55–18.00
17:0, mg g−1 0.46 0.07–0.78 0.001 0.24 0.00–0.56
18:0, mg g−1 2.76 0.79–4.82 0.001 1.43 0.39–2.53
Total SFA, mg g−1 27.58 5.57–49.90 0.01 16.72 6.31–25.17
Monounsaturated FAs (MUFA)
16:1n-7, mg g−1 4.78 0.68–8.11 ns 3.87 1.32–10.09
17:1n-8, mg g−1 0.52 0.07–1.00 0.001 0.24 0.11–0.45
18:1n-7, mg g−1 2.98 0.70–6.18 ns 2.65 1.13–5.42
18:1n-9, mg g−1 25.04 3.91–47.54 0.001 9.34 4.13–14.58
20:1n-9, mg g−1 0.72 0.09–3.04 ns 0.47 0.19–1.03
Total MUFA, mg g−1 34.98 5.56–63.49 0.001 17.08 7.29–31.35
Polyunsaturated FAs (PUFA)
18:2n-6, mg g−1 3.09 0.49–5.81 ns 2.37 0.89–4.52
18:3n-3, mg g−1 2.36 0.07–5.12 0.01 1.26 0.29–3.46
20:2n-6, mg g−1 0.55 0.02–1.02 ns 0.88 0.17–6.56
20:4n-6 (ARA), mg g−1 0.37 0.00–1.03 ns 0.41 0.08–0.74
20:5n-3 (EPA), mg g−1 6.27 1.35–13.59 0.01 3.93 1.29–7.40
22:5n-3, mg g−1 0.37 0.00–1.06 ns 0.28 0.00–0.67
22:6n-3 (DHA), mg g−1 10.13 4.63–18.94 0.001 6.35 2.39–9.75
Total PUFA, mg g−1 25.69 7.13–50.76 0.01 16.81 5.59–31.62
n-3 PUFA, mg g−1 21.63 6.37–43.22 0.01 13.09 4.35–24.85
n-6 PUFA, mg g−1 4.07 0.75–7.54 ns 3.71 0.91–10.83
  1. The statistical significance of differences in variables between sprat and herring is indicated with the three classes of probability (p < 0.05, 0.01 or 0.001), with ns non-significant, and the significantly larger means and ranges are indicated in italics