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  • Title: [Effect of beta-ecdysterone in competitive cultures of Drosophila melanogaster].
    Author: Botella LM, Ménsua JL.
    Journal: Rev Esp Fisiol; 1987 Mar; 43(1):63-8. PubMed ID: 3112875.
    Abstract:
    High levels of beta-ecdysterone (more than 1 microgram/ml) have been shown to decrease larva-adult viability and to speed up developmental times when supplied to the media in crowding cultures. The highest doses (100 micrograms/ml) of ecdysterone suppresses almost completely the phenomenon of larval stop in the third instar of development, first reported by our laboratory in overcrowded situations. Thus, one may deduce that stopped larvae could have low levels of ecdysone, and perhaps these are the ultimate physiological cause of their arrested development before the critical larva-pupa molt.
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