The influence of nutritional and hormonal factors on egg development in the blowfly Phormia regina (Meig.)

摘要: Abstract The blowfly, Phormia regina , reared under the conditions described here, will not develop eggs if fed only an aqueous sugar solution. A complex medium of known gross chemical composition and capable supporting egg development is described. minimal amount required for defined. Allatectomy results in fat body hypertrophy both male female blowflies but ovariectomy does not. In addition, presence corpus allatum, a specific period time, necessary development. flies before critical has been no vitellogenesis; more than this fed, occurs even after allatectomy. This approximates Several lines evidence indicate that activation allatum brought about by ingestion dietary protein; influence other substances ruled out. one invariant effect; it controls body. None present require action on ovary.