Figure 1. Experimental lines and sublines.

(A) Schematic representation of the experimental design for one of the four inbred lines (line a) and for the outbred control. 55 inbred sublines were established and maintained by sib mating for eight generations. Pupa productivity was evaluated in the remaining sublines at generation 8. Pupa productivity was also simultaneously evaluated from 70 replicated vials of an outbred control. (B) Distribution of average productivities (number of pupa per female 14 days after mating across three replicated vials) for the 25 sublines of line a remaining at generation 8.