Skip to main content

Table 2 Individual PUFA (% of total FAME) among different food-web components in streams (mean ± 1 standard deviation)

From: Polyunsaturated fatty acids in fish tissues more closely resemble algal than terrestrial diet sources

Samples   ALA SDA LA EPA ARA DHA 16:1n-7 n
Terrestrial resources Fresh leaves 37 ± 20 0 ± 0 16 ± 8 0 ± 0 0 ± 0 0 ± 0 1 ± 0 22
  Conditioned leaves 31 ± 4 1 ± 1 10 ± 1 1 ± 1 0 ± 0 0 ± 0 1 ± 1 14
Aquatic resources Epilithon 9 ± 3 3 ± 2 7 ± 2 12 ± 5 1 ± 0 1 ± 0 15 ± 5 48
Invertebrates 10 ± 4 1 ± 1 6 ± 3 14 ± 6 1 ± 1 0 ± 0 8 ± 4 146
European bullhead Brain 2 ± 2 1 ± 0 1 ± 1 11 ± 3 4 ± 1 25 ± 4 5 ± 1 37
Eyes 6 ± 4 1 ± 1 3 ± 1 8 ± 2 2 ± 1 19 ± 7 7 ± 3 24
Liver 4 ± 2 1 ± 1 3 ± 1 12 ± 4 5 ± 2 19 ± 6 5 ± 2 48
Muscle 5 ± 3 1 ± 1 3 ± 1 18 ± 4 3 ± 2 15 ± 5 5 ± 3 57
Salmonids Brain 1 ± 0 0 ± 0 1 ± 0 8 ± 1 1 ± 0 32 ± 5 2 ± 1 70
Eyes 10 ± 4 2 ± 1 5 ± 2 7 ± 2 1 ± 1 11 ± 7 12 ± 4 64
Liver 4 ± 1 1 ± 0 3 ± 1 10 ± 3 4 ± 2 26 ± 7 4 ± 1 60
Muscle 7 ± 3 1 ± 1 3 ± 1 13 ± 3 2 ± 1 24 ± 6 5 ± 2 90
  1. ALA alpha-linolenic acid, SDA stearidonic acid, EPA eicosapentaenoic acid, DHA docosahexaenoic acid, LA linoleic acid, ARA arachidonic acid, n sample size