Fig. 6: Temporal dynamics of ΔH calculated from stochastic simulations of microsatellite markers. | Heredity

Fig. 6: Temporal dynamics of ΔH calculated from stochastic simulations of microsatellite markers.

From: Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generations

Fig. 6

Evolving under IAM (A, C) or SMM (B, D) in a single population that went from 1000 to 250 individuals within a single generation at time 0. Top and bottom figures show the same data with time expressed either in years (A, B) or generations (C, D). The dark blue curve corresponds to a population without overlapping generations (adult survival ν = 0, generation time T = 1 year), while the light blue and gray curves correspond to adult survival ν = 0.8 (T = 4.5 years) and ν = 0.95 (T = 13.4 years). Increased generation time logically resulted in a delayed signal of genetic bottleneck (A, B). In addition to that effect, in the IAMcase, age structure and overlapping generations also resulted in a reduced bottleneck signal and additional delay not explained by changes in generation time (C).

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