[Nutritional needs of adult Drosophila: influence of lecithins and of choline chloride on the fecundity, the fertility and the size of ova].
The lecithin or choline chloride deficiency, in Drosophila, results in an important decrease of the number of eggs produced, hatching and egg size. However, the ovogenesis is not completely stopped, even after 15 days. This effects seem caused by the choline deficiency. When used under the chloride form, choline has no toxic effect even at a rate as high as 3 g/litre. However, the lecithin has toxic effects for amounts up to 4 g/litre. In the adults, the optimal concentration could be about 2 g/litre for the lecithin and 300 mg/litre for the cholin chloride.
D000818:Animals; D002794:Choline / Q000494:pharmacology*; D002796:Choline Deficiency; D004032:Diet; D004330:Drosophila / Q000378:metabolism*; D005260:Female; D005298:Fertility / Q000187:drug effects*; D010063:Ovum / Q000166:cytology* / Q000187:drug effects; D010713:Phosphatidylcholines / Q000172:deficiency / Q000494:pharmacology*
D010713:Phosphatidylcholines; D002794:Choline
Besoins nutritionnels de la Drosophile adulte: influence des lécithines et du chlorure de choline sur la fécondité, la fertilité et la taille des oeufs