Table 3. Estimates of the effective number of breeders with (NeT) and without (NNo Hatchery) a supplementation program.
| Brood-year | Nc | Nw | NNo Hatchery | XRRS=1 | NeTRRS=1 | XRRS=0.85 | NeTRRS=0.85 |
|---|---|---|---|---|---|---|---|
| 1993 | 16.5 | 222.4 | 266.5 | 0.43 | 78.9 | 0.37 | 100.9 |
| 1994 | 32.5 | 285.5 | 318.5 | 0.58 | 91.8 | 0.49 | 120.1 |
| 1995 | 25.0 | 180.1 | 208.9 | 0.40 | 118.8 | 0.34 | 141.7 |
| 1996 | 18.9 | 250.3 | 257.8 | 0.12 | 258.5 | 0.10 | 264.6 |
| 1997 | 34.3 | 426.6 | 456.4 | 0.23 | 343.6 | 0.19 | 382.1 |
| 1998 | 30.2 | 517.2 | 545.0 | 0.42 | 156.4 | 0.35 | 202.0 |
| 1999 | 36.7 | 588.9 | 618.1 | 0.49 | 142.7 | 0.42 | 187.9 |
| 2000 | 17.6 | 663.6 | 717.8 | 0.37 | 119.9 | 0.31 | 158.6 |
| 2001 | 26.6 | 577.3 | 652.9 | 0.54 | 86.8 | 0.46 | 116.8 |
| 2002 | 32.1 | 650.4 | 746.0 | 0.30 | 278.9 | 0.26 | 345.0 |
| 2003 | 30.1 | 866.1 | 973.1 | 0.37 | 196.1 | 0.32 | 256.8 |
| H Mean | 25.4 | 373.5 | 415.2 | — | 136.3 | — | 172.9 |
NNo Hatchery equals the estimated effective number of breeders had there been no hatchery supplementation program and NeT equals the total effective number of breeders for both wild and hatchery fish considered jointly with relative reproductive success values of 1 and 0.85 (RRS; hatchery relative to wild). Also presented is ‘x', the contribution of hatchery fish to the next generation, and point estimates for the effective number of breeders for the captive (Nc [Pedigree]), and wild fish per brood-year (Nw[LDNe]). Where appropriate, we report the harmonic mean (Mean) for all brood-years.