Table 3.
Relative reproductive success (RRS) of naturally spawning F1 parents by mating type
| Return year | n F2 offspring assigned | RRS* | P-value | 80%/95% Power† |
|---|---|---|---|---|
| H × H vs. W × W | ||||
| Females | ||||
| 2003 | 4/62 | 0.87 | 0.83 | 0.87/0.43 |
| 2004 | 40/79 | 0.76 | 0.17 | 0.76/0.67 |
| 2005 | 30/22 | 1.14 | 0.67 | 1.36/1.55 |
| Overall female | 0.87 | 0.58 | ||
| Males | ||||
| 2003 | 4/62 | 1.03 | 1.00 | 1.31/1.58 |
| 2004 | 40/79 | 0.94 | 0.76 | 0.77/0.67 |
| 2005 | 30/22 | 1.02 | 1.00 | 1.50/1.74 |
| Overall male | 0.98 | 1.00 | ||
| Overall both sexes | 0.94 | 0.95 | ||
| H × W vs. W × W | ||||
| Females | ||||
| 2003 | 41/62 | 1.05 | 0.68 | 1.13/1.18 |
| 2004 | 108/79 | 1.12 | 0.48 | 1.21/1.32 |
| 2005 | 68/22 | 1.30 | 0.33 | 1.35/1.49 |
| Overall female | 1.14 | 0.62 | ||
| Males | ||||
| 2003 | 41/62 | 0.96 | 0.85 | 0.88/0.80 |
| 2004 | 108/79 | 1.08 | 0.67 | 1.21/1.31 |
| 2005 | 68/22 | 0.93 | 0.83 | 0.69/0.51 |
| Overall male | 1.00 | 0.96 | ||
| Overall both sexes | 1.07 | 0.92 | ||
| H × – vs. W × – | ||||
| Females | ||||
| 2003 | 4/10 | 0.90 | 1.00 | 0.78/0.78 |
| 2004 | 5/15 | 0.72 | 0.77 | 0.63/0.41 |
| 2005 | 6/7 | 0.85 | 1.00 | 0.86/0.57 |
| Overall female | 0.82 | 1.00 | ||
| Males | ||||
| 2003 | 1/4 | — | — | — |
| 2004 | 5/9 | 1.31 | 0.65 | 1.44/1.67 |
| 2005 | 2/8 | 0.75 | 1.00 | 0.75/0.75 |
| Overall male | 1.06 | 0.93 | ||
| Overall both sexes | 0.91 | 1.00 | ||
n is the sample size for the number of wild-born F2 offspring that assigned to each parental mating type.
*
RRS is calculated as the RS of hatchery-reared fish over the RS of wild-origin fish, and associated P-values are based on two-tailed permutation tests. Overall RRS was estimated using weighted geometric means, and the according P-values were calculated on the basis of Fisher's combined probability.
†
Statistical power is the RRS value that would be significant with 80% and 95% probability.