Comparison of the morphogenic effects of JH-I and JH-III during the solitary phase of Locusta migratoria]

After injection of oiled solutions of JH-I metamorphosis was much more disturbed than following the same treatment with JH-III. The two hormones reduced in the same way the mortality which occurred after injection of pure peanut oil in the first hours of a larval stage. JH-1 and JH-III seemed to have the same effect on the two phases of Locusta.