Figure 3.

Vg content of abdominal extracts of pharate and post-eclosion adults of Cecropia, and of long-day Monarch adults. A1 to A7 designate days after eclosion in Monarchs. Days before eclosion in Cecropia are indicated by −10 to −1. P indicates diapausing pupae of Cecropia. Relative concentrations were estimated by Oudin tests using an antiserum produced in rabbits injected with isolated Cecropia Vg. Standard curves were produced by serial dilutions of extracts of day 0 adult Cecropia, and day 7 adult Monarchs. Error bars indicate standard errors; when not shown they were too small to be graphed. N = 6 for Cecropia and 5 for Monarchs.