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Figure 2


Fig. 2. (A) Brood size comparison between old (OC) and young (YC) couples; box-whisker plot showing the mean ± s.e.m. (boxes) and s.d. (whiskers) (F1,10=6.45, *P=0.029). (B) Comparison of offspring survival curves from old (OC; open squares) and young (YC, solid circles) couples. Least-squares survival functions (fitted lines) for offspring from the OC (N=508, offspring from six couples) and YC (N=263, offspring from six couples). Survival of offspring from YC is significantly poorer than from OC (P<0.0001).