title: [Rearing of a biotype of Myzus persicae Sulzer on synthetic media. III. Respective nutritive value of L-methionine, L-cysteine and sulfates].
abstract: The respective influence of some different components of a synthetic diet on the survivial and the fecundity of one strain of Myzus persicae Slz. have been established by experiments with the deletion of some components and with variations of their concentrations. 1. L.methionin is the only essential amino-acid amd the variations of its concentrations are related with variations of the fecondity of the aphids. 2. When the amount of L. methionin is inadequate to satisfy the whole sulphur requirements, the supply of L. cystein or inorganic sulphur is beneficial. 3. The nutritional values of L. cystein and of inorganic sulphur seem to be identical. 4. The fecundity of the aphids is depending on the concentration of the everall L. aminoacides and on the amount of L. methionin in the synthetic diet without any interaction between these two factors. So, it can be assumed that the concentration of overall L.amino-acids and the concentration of L. methionin exert separate controls of the fecundity of the aphids.
mesh_terms: D000818:Animals; D001042:Aphids / Q000502:physiology*; D003470:Culture Media; D003545:Cysteine / Q000378:metabolism*; D003677:Deficiency Diseases / Q000378:metabolism; D005260:Female; D008297:Male; D008715:Methionine / Q000172:deficiency / Q000378:metabolism*; D009751:Nutritional Requirements; D012098:Reproduction; D013431:Sulfates / Q000378:metabolism*
chemical_list: D003470:Culture Media; D013431:Sulfates; D008715:Methionine; D003545:Cysteine
vernacular_title: Elevage d'un biotype de Myzus persicae Sulzer sur milieu synthétique. III. Valeur alimentaire respective de la L.  cystéine et des sulfates