Table 1 Arithmetic means and standard deviations for biometric parameters
From: Contaminant levels in the European eel (Anguilla anguilla) in North Rhine-Westphalian rivers
Sampling site | n | Age (years) | Length (cm) | Weight (g) | Lipid content (%) | Condition factor |
|---|---|---|---|---|---|---|
Rhein Bonn | 9 | 9.5 ± 2.8 | 59 ± 12 | 407 ± 230 | 22.9 ± 9.7 | 0.18 ± 0.02 |
Rhein Düsseldorf | 11 | 7.1 ± 1.8 | 47 ± 13 | 250 ± 169 | 13.9 ± 8.8 | 0.22 ± 0.08 |
Rhein Rees | 9 | 8.7 ± 2.1 | 62 ± 10 | 529 ± 245 | 22.7 ± 5.8 | 0.20 ± 0.02 |
Rhein Emmerich | 11 | n.d.a | 60 ± 10 | 405 ± 194 | 26.7 ± 11.2 | 0.18 ± 0.02 |
Sieg | 10 | 8.6 ± 2.4 | 47 ± 7 | 203 ± 92 | 13.8 ± 8.0 | 0.19 ± 0.03 |
Wupper | 10 | 7.6 ± 2.8 | 49 ± 11 | 278 ± 165 | 18.9 ± 8.8 | 0.21 ± 0.03 |
Ruhr | 9 | 13.0 ± 4.0 | 56 ± 12 | 632 ± 604 | 26.5 ± 14.1 | 0.28 ± 0.17 |
Erft | 10 | 8.8 ± 3.2 | 47 ± 8 | 230 ± 127 | 23.4 ± 12.6 | 0.20 ± 0.03 |
Lippe | 9 | 8.3 ± 2.8 | 52 ± 10 | 280 ± 171 | 21.6 ± 11.8 | 0.17 ± 0.03 |
Niers | 5 | 14.0 ± 4.6 | 734 ± 14 | 861 ± 395 | 29.1 ± 6.3 | 0.20 ± 0.02 |
Schwalm | 8 | 13.4 ± 2.1 | 67 ± 8 | 597 ± 194 | 20.8 ± 7.8 | 0.20 ± 0.03 |
Rur | 10 | 12.2 ± 2.3 | 55 ± 6 | 316 ± 116 | 25.4 ± 9.6 | 0.19 ± 0.04 |
Berkel | 8 | 9.0 ± 4.3 | 54 ± 13 | 375 ± 252 | 20.6 ± 13.4 | 0.19 ± 0.03 |