Correlated effects of ecdysone and neurosecretion in puparium formation (pupariation) of flies.

@article{Zdarek1969CorrelatedEO,
  title={Correlated effects of ecdysone and neurosecretion in puparium formation (pupariation) of flies.},
  author={Jan Zdarek and G J Fraenkel},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1969},
  volume={64 2},
  pages={565-72}
}
A neurohormone accelerates the formation and tanning of the fly puparium in the presence of ecdysone. When larvae of Phormia regina are divided by ligation into two parts before the critical period, the hind part remains untanned, unless injected with blood from a pupariating larva. This confirms earlier observations and is in contrast to recent data with another genus. When Sarcophaga bullata larvae are ligated after the critical period, the anterior part starts to tan about two hours before… CONTINUE READING