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Fig. 6. Characteristics of vitellogenin profiles in response to timing of
gonadotropin treatments (early or late initiation of juvenile hormone analog;
JHAi). (A) Female lubber grasshoppers subjected to late JHAi had vitellogenin
profiles consistent with favoring current reproduction at the expense of
future reproduction, relative to females on early JHAi (P=0.001) (B).
Values (mean ± s.e.m.) on the graphs show, from left to right, time
from JHAi to vitellogenin onset, time from JHAi to vitellogenin maximum,
maximum level of vitellogenin, and time from vitellogenin maximum to
oviposition.