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Hormonal control of ovarian development in the silkworm, Bombyx mori
Author(s) -
Tsuchida Kozo,
Nagata Masao,
Suzuki Akinori
Publication year - 1987
Publication title -
archives of insect biochemistry and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 66
eISSN - 1520-6327
pISSN - 0739-4462
DOI - 10.1002/arch.940050303
Subject(s) - bombyx mori , ecdysis , ovary , vitellogenin , ecdysteroid , biology , endocrinology , medicine , radioimmunoassay , period (music) , 20 hydroxyecdysone , juvenile hormone , pupa , hormone , larva , moulting , botany , biochemistry , physics , gene , acoustics
Hormonal control of ovarian development was examined in Bombyx mori . The weight of the ovary increased suddenly by 3 days after pupal ecdysis, and vitellogenin could be immunologically detected in the ovary at that time. The ecdysteroid titers during pupal‐adult development, quantified by radioimmunoassay, increased from day 0 to day 2. Ovarian development was arrested for a long period in brainless pupae and isolated pupal abdomens. Injection of 20‐hydroxyecdysone into such preparations stimulated development of the ovaries, and vitellogenin could be detected in ovaries 2 days after injection. The results suggest that 20‐hydroxyecdysone acts by stimulating the growth of ovary.