Figure S1 Scarce food reduces female fecundity (right column) but not offspring size (left column).

Figure S2 When fecundity (right panel) is constrained by female age, offspring size (left panel) varies inversely with age.

Figure S3 The shape of the cost function determines the effect of costs of reproduction; age-dependent shifts in offspring size are present only at intermediate costs (Fig. 4C).

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