Table 1.
Mean fork length (cm; ±SE) and mass (g; ±SE) of the mature Atlantic salmon used in competitive breeding experiments comparing growth hormone transgenic and nontransgenic alternative reproductive phenotypes. In 2007, six trials compared age 0+ transgenic (T) versus 1+ nontransgenic (NT) parr and five trials compared 0+ transgenic versus 0+ nontransgenic parr; the size of parr involved are reported separately for each age comparison below. The N for each fish type is provided in parentheses
| Length (cm) | Mass (g) | ||||
|---|---|---|---|---|---|
| Year | Fish type | Transgenic | Nontransgenic | Transgenic | Nontransgenic |
| 2006 | Anadromous female | – | 54.26 ± 1.20 (11) | – | 1620.3 ± 150.8 (11) |
| Anadromous male* | 65.45 ± 0.83 (11) | 55.74 ± 1.61 (11) | 2862.2 ± 134.2 (11) | 1604.6 ± 180.1 (11) | |
| Mature parr | – | 14.39 ± 1.14 (30) | – | 37.99 ± 3.18 (30) | |
| Anadromous female | – | 59.36 ± 1.83 (9) | – | 1925.6 ± 140.4 (9) | |
| Anadromous male | – | 62.13 ± 1.49 (7) | – | 2202.3 ± 287.5 (7) | |
| 2007 | Mature parr (T 0+ vs NT 1+) | 15.22 ± 0.56 (6) | 14.14 ± 0.28 (6) | 36.10 ± 3.52 (6) | 30.9 ± 1.91 (6) |
| Mature parr* (T 0+ vs NT 0+) | 9.33 ± 0.70 (5) | 7.84 ± 0.39 (5) | 20.6 ± 2.45 (5) | 12.85 ± 1.40 (5) | |
*
Instances where transgenic males were larger than nontransgenic males in length and mass.