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Experientia

, Volume 40, Issue 12, pp 1418–1420 | Cite as

Sexual behavior without adult morphogenesis inLocusta migratoria

  • U. Shalom
  • M. P. Pener
Short Communications

Summary

Injection of azadirachtin into young Vth (=last) instarLocusta hoppers inhibits molt and a considerable portion of the animals survice for more than 40 days as ‘over-aged nymphs’; in contrast, the duration of the Vth instar is 8–10 days in normal controls. Males of over-aged nymphs exhibit adult sexual behavior, and injection of juvenile hormone intensifies this behavior. The results demonstrate that the ‘terminal’ molt leading to morphogenetic adult differentiation is not necessary for an adult behavioral pattern to develop, and/or to become overt, in a hemimetabolous insect.

Key words

Azadirachtin sexual behavior ontogenetic relations between morphology and behavior juvenile hormone Locusta migratoria 

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Copyright information

© Birkhäuser Verlag 1984

Authors and Affiliations

  • U. Shalom
    • 1
  • M. P. Pener
    • 1
  1. 1.Department of ZoologyThe Hebrew UniversityJerusalem(Israel)

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