Table 1.
Measured traits (mean ± s.e.) of female and male sand gobies, Pomatoschistus minutus, from a North Sea and a Baltic Sea population.
| North Sea (Bökevik) | Baltic Sea (Tvärminne) | F | p-value | |
|---|---|---|---|---|
| F1,47 | p-value | |||
| afemale somatic body mass (mg) | 155.80 ± 11.53 | 130.07 ± 11.85 | 2.13 | 0.15 |
| bfemale liver mass (mg) | 2.69 (2.33; 3.09) | 7.50 (6.59; 8.47) | 30.0 | <0.001 |
| F1,49 | p-value | |||
| amale somatic body mass (mg) | 159.99 ± 11.14 | 138.81 ± 12.29 | 1.63 | 0.21 |
| cmale liver mass (mg) | 1.44 (1.25; 1.65) | 2.34 (1.89; 2.89) | 3.88 | 0.055 |
| F1,46 | p-value | |||
| aovary mass (mg) | 12.90 ± 2.88 | 25.11 ± 4.21 | 6.10 | 0.017 |
| bfemale gonadosomatic index (GSI) | 5.53 (4.43; 6.98) | 18.36 (15.46; 21.51) | 17.4 | <0.001 |
All measures are based on dry mass. Analyses were done using auntransformed, bsquare-root transformed or cLn-transformed data. For a untransformed mean ± s.e. values are given. For b and c backtransformed values are given, reported as mean (lower range of s.e.; higher range of s.e.).