Fig. 4: Temperature-regime-specific predicted breeding values (PBV; i.e., additive genetic effects) and their thermal plasticity. | Heredity

Fig. 4: Temperature-regime-specific predicted breeding values (PBV; i.e., additive genetic effects) and their thermal plasticity.

From: Genetic variation for upper thermal tolerance diminishes within and between populations with increasing acclimation temperature in Atlantic salmon

Fig. 4

PBV estimates (A–D) are controlled for fixed effects as shown in Table 1, for four traits and 16 wild (W) and 16 domesticated (D) Atlantic salmon breeders and based on their progeny performance records in three temperature regimes. Thermal plasticity in the upper panels is depicted by breeder-specific slopes for PBVs between temperature-regime pairs with a 4 °C difference. The lower panels (E–H) show corresponding estimates (with 95% confidence intervals) for the regime-specific proportion of the additive genetic to the total phenotypic variance (h2) and for thermal plasticity among genotypes between temperature regime pairs with a 4 °C difference as estimated by genetic correlations (RG). Please note that estimate confidence intervals per trait are highly correlated between most regimes. Estimates are for the four traits of length (A, E; n = 3932), condition (B, F; n = 3932), CTmax (C, G; n = 538), and hct (D, H; n = 538).

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