Effects of ingested phytoecdysteroids in the female soft tickOrnithodoros moubata |
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| Authors: | V Savolainen J Wuest R Lafont J -L Connat |
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| Institution: | (1) Zoologie et Biologie animale, Université de Genève, CH-1205 Geneva, (Switzerland);(2) Ecole Normale Supérieure, URA CNRS 686, 46 rue d'Ulm, F-75230 Paris Cedex 05, France;(3) Present address: Conservatoire et jardin botaniques, Chambesy, CH-1292 Geneva, (Switzerland);(4) Present address: Département de biologie animale, URA CNRS 674, Université de Bourgogne, F-21000 Dijon, France |
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| 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. |
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| Keywords: | Tick Ornithodoros moubata ecdysteroids |
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