Fig. 1.

Variation in the duration of parental care in wild-caught individuals. Variation in the duration of maternal (orange bars) and paternal (purple bars) care, and the timing of biting the feeding incision in the carcass by wild-caught parents under laboratory conditions (green bars, data shown only for 9 pairs that inserted an incision prior to larval hatching). Data are scaled relative to the timing of larval hatching at 0 h. n = 34 pairs. Horizontal bars indicate when we removed parents in the No Care (blue bar) and Control (red bar) treatments. Note that each treatment reduces variation in the extent of parental assistance supplied to larvae, both in biting the feeding incision and caring for offspring after hatching