| | 1 | Author
| Heinz Rem, K. Laus-, Peter Sieber | Requires cookie* | | | Title
| Inhibition of Oogenesis and Ovarian Ecdysteroid Synthesis by Azadirachtin in Locusta migratoria migratorioides (R. & F.)  | | | | Abstract
| The sterilizing effect of azadirachtin, an insect growth regulator from the neem tree, Azadirachta indica A. Juss, was tested with mature females o f Locusta migratoria. After a single injection of 10 |ig into females between 2 and 13 days after emergence, about 60% died during the following four days and all lost weight in the range of about 50%. If the compound was injected into animals of an age between 2 and 10 days, no maturation o f the terminal oocytes could be observed. Injection at an age between 10 and 13 days after adult emergence resulted in ovaries which contained almost mature oocytes. Most o f the treated locusts had no oviposition and only traces of ecdysteroids were present in their ovaries, as quantified by radioimmunoassay. The inhibition of oogenesis and o f ovarian ecdysteroid synthesis by azadirachtin is discussed on the basis of its interference with the neuroendocrine control of hormone synthesis. | | | |
Reference
| Z. Naturforsch. 36c, 466 (1981); received November 10 1980/February 23 1981 | | | |
Published
| 1981 | | | |
Keywords
| Locusta migratoria, Azadirachta indica, Ecdysteroids, Azadirachtin, Ovary | | | |
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| default:Reihe_C/36/ZNC-1981-36c-0466.pdf | | | | Identifier
| ZNC-1981-36c-0466 | | | | Volume
| 36 | |
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