Table 4. Gender and age diferrences in body weight (g), metal concentration (mg/kg, dry weight in liver) and stable isotope ratio (δ13C and δ15N, ‰) in short-tailed shearwater.
| Male (n=9) |
Female (n=7) |
Adult (n=14) |
Juvenil e(n=8) |
Kruskal-Wallis Χ2 (P) |
|
|---|---|---|---|---|---|
| Body weight | 476 ± 62 | 541 ± 28 | - | - | 3.85 (0.05) |
| Hg | 1.71 ± 0.74 | 0.88 ± 0.36 | - | - | 5.18 (0.02) |
| Cd | 3.06 ± 1.97 | 9.55 ± 4.14 | - | - | 8.47 (0.004) |
| Pb | 0.05 ± 0.02 | 0.09 ± 0.03 | - | - | 4.29 (0.04) |
| Body weight | - | - | 497 ± 55 | 505 ± 47 | 0.09 (0.76) |
| Cr | - | - | 0.37 ± 0.38 | 0.15 ± 0.15 | 8.44 (0.004) |
| Co | - | - | 0.11 ± 0.10 | 0.13 ± 0.04 | 4.11 (0.04) |
| Cu | - | - | 17.7 ± 5.53 | 29.4 ± 14.1 | 9.43 (0.002) |
| δ15N | - | - | 10.1 ± 0.66 | 10.8 ± 0.60 | 6.43 (0.01) |
| δ13C | - | - | –22.4 ± 1.18 | –21.0 ± 0.92 | 5.36 (0.02) |
Given are arithmetic means ± SD.