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Experientia

, Volume 51, Issue 6, pp 596–600 | Cite as

Effects of ingested phytoecdysteroids in the female soft tickOrnithodoros moubata

  • V. Savolainen
  • J. Wuest
  • R. Lafont
  • J. -L. Connat
Research Articles

Abstract

The effects of the ingestion of some phytoecdysteroids were studied in the soft tickOrnithodoros moubata. Supernumerary moulting and malformations of first leg pairs were obtained with 22-oxo-20-hydroxyecdysone, 20-hydroxyecdysone-22-acetate, and 20-hydroxyecdysone-22-benzoate. Egg-yield was reduced with 20-hydroxyecdysone-22-acetate and carthamosterone. Finally, drying-out of eggs was observed with carthamosterone and 22-deoxy-20,26-dihydroxyecdysone. In addition, we demonstrated that there is a correlation between the number of completed gonotrophic cycles and the impossibility of inducing supernumerary moulting.

Key words

Tick Ornithodoros moubata ecdysteroids 

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Copyright information

© Birkhäuser Verlag Basel 1995

Authors and Affiliations

  • V. Savolainen
    • 1
  • J. Wuest
    • 1
  • R. Lafont
    • 2
  • J. -L. Connat
    • 1
  1. 1.Zoologie et Biologie animaleUniversité de GenèveGeneva(Switzerland)
  2. 2.Ecole Normale SupérieureURA CNRS 686Paris Cedex 05France

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