Hormonal control of eclosion of flies from the puparium

Abstract
Pharate flies (Sarcophaga bullata) very close to eclosion were injected with hemolymph from eclosing flies or various other preparations, kept at 10.degree. C for 24 h, returned to room temperature, and tested for eclosion behavior (ongoing, attempted or completed eclosion) during the first 30 min, the subsequent 2 1/2 h and after 51 h. Flies injected with eclosion hemolymph showed significantly more eclosion activity during the first 30 min than noninjected controls, flies injected with hemolymph from larvae, or flies injected with Ringer solution.

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