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Survivorship curves for daughters born (a) to high-ranking (solid curve), mid-ranking (hatched curve) and low-ranking (dashed curve) mothers, and (b) to primiparous (hatched curve) and multiparous (solid curve) mothers. Cases in which the proportion of individuals surviving does not reach zero are owing to individuals still alive at the end of the study (i.e. right-censored data points).
