Fig. 5. (A) Exemplar growth curves between weeks 1 and 7 for offspring from one old couple (OC; red open squares) and one young couple (YC; blue circles) male and their associated scatter of individual data points. (B,C) Scatterplots and linear regression lines for the relationships between cohort growth coefficients (q) and number of newborns in the cohorts, for large parents (OC; B) and small parents (YC; C). Significant and negative correlation and regressions were observed for the OC group (correlation: r=-0.82, P<0.05; regression: growth coefficient=30.456-0.1173xnumber of newborns; F_1,4=7.94, P=0.047; N=6) but no corresponding correlation was observed for the YC group (r=0.048; P>0.9; N=6).