Figure 2.

Maternal environmental conditions influence offspring hatching date. Curves are fitted survival functions from the accelerated failure time model. Hatching date is not influenced by egg density, so it is an indicator of maternal effects only. Panels (a) and (b) show the effects of parental rearing (good versus poor) under (a) high and (b) low parental food amounts. Rearing conditions matter only when parental food conditions were poor. (c) Moreover, parental food amounts (high versus low) only mattered when mothers were young. (d) Under these conditions, low amounts of food reduced hatching dates compared to no effect when mothers were old.