Fig. 1.

Population differences in larval lipid concentration and relationship to survival in red abalone. (A) Box plots of lipid concentrations assessed across developmental time points indicate that abalone sourced from an upwelling region at VD exhibit significantly elevated larval lipid concentrations throughout the larval phase at 4 d post-fertilization (DPF), 7 DPF, and post-settlement at 10 DPF as compared to larvae from SB (all P < 0.0001). Shared letters indicate group means that are not significantly different based on means comparisons of least squares group estimates assessed separately at each time point (P > 0.05). (B) Under high CO₂, post-settlement lipid concentration was a significant predictor of survival across post-settlement time points while this trend was not observed under low CO₂. Shaded areas surrounding regression slopes represent 95% confidence bands. Lipid data presented taken from combined results on VD-F₁ and SB-F₁ animals.