title: Ecdysteroids and ovarian development in the shore crab, Carcinus maenas.
abstract: Mature ovaries of the shore crab Carcinus maenas contain large concentrations of three major ecdysteroids which we have identified by physicochemical methods as ecdysone, 20-hydroxyecdysone and ponasterone A. The fluctuations of ovarian and blood ecdysteroid concentrations are presented in relation to the various stages of ovarian development.
mesh_terms: D000375:Aging; D000818:Animals; D003386:Brachyura / Q000502:physiology; D003429:Cross Reactions; D004440:Ecdysone / Q000032:analysis*; D004441:Ecdysterone / Q000031:analogs & derivatives* / Q000032:analysis*; D005260:Female; D010053:Ovary / Q000254:growth & development*; D011863:Radioimmunoassay; D012741:Sexual Maturation
chemical_list: D004440:Ecdysone; D004441:Ecdysterone; C008999:ponasterone A