Table 2.
Maximum‐likelihood estimates of variance components for (A) embryo survival, and restricted maximum‐likelihood estimates of variance components for (B) hatching time, (C) hatchling length, (D) yolk sac volume at hatching, and (E) larval growth for each treatment, in addition to narrow‐sense heritabilities (h 2), mean‐scaled additive genetic variance (I A), and coefficients of additive genetic variation (CVA)
| V A | V Dam | V D | V block | V res | h2 | I A | CVA | |
|---|---|---|---|---|---|---|---|---|
| (A) Embryo survival | ||||||||
| Control | <0.01 | 1.0 | 156.6*** | 0 | 3.3 | <0.01 | <0.0001 | <0.01 |
| EE2 | 0 | 3.4 | 125.8*** | 0 | 3.3 | 0 | 0 | 0 |
| (B) Hatching time | ||||||||
| Control | 1.2*** | 2.2*** | 0 | 21.3*** | 3.7 | 0.04 | 0.0001 | 1.1 |
| EE2 | 0.8*** | 2.3*** | <0.01 | 20.6*** | 3.5 | 0.03 | <0.0001 | 0.89 |
| (C) Hatchling length | ||||||||
| Control | 0.04*** | 0.07*** | <0.01 | 0.09*** | 0.09 | 0.14 | 0.0002 | 1.49 |
| EE2 | 0.03*** | 0.08*** | 0 | 0.09*** | 0.08 | 0.13 | 0.0002 | 1.44 |
| (D) Yolk sac volume at hatching | ||||||||
| Control | 0.03*** | 0.06*** | 0 | 0.07*** | 0.09 | 0.15 | <0.0001 | 0.49 |
| EE2 | 0.03*** | 0.06*** | 0 | 0.07*** | 0.08 | 0.15 | <0.0001 | 0.47 |
| (E) Larval growth | ||||||||
| Control | 0.02*** | 0.01*** | 0 | 0.02*** | 0.1 | 0.10 | 0.0354 | 6.0 |
| EE2 | 0.01 | 0.01*** | 0 | 0.02*** | 0.1 | 0.05 | 0.0017 | 4.1 |
V A: additive genetic; V Dam: maternal; V D: dominance; V res: residual.
The significance of the variance components: * p < 0.05; ** p < 0.01, *** p < 0.001.