Ecdysteroids during ovarian development and embryogenesis in the cricket, Gryllus bimaculatus de Geer
作者： WERNER ESPIG , EDEL TRAUD THIRY , KLAUS H. HOFFMANN
DOI: 10.1080/07924259.1989.9672034
关键词: Ecdysteroid 、 Embryogenesis 、 Cuticle 、 Hatching 、 Ecdysone 、 Vitellogenesis 、 Internal medicine 、 Biology 、 Endocrinology 、 Gryllus bimaculatus 、 Radioimmunoassay
摘要: Summary Ecdysteroid levels in Gryllus bimaculatus eggs have been determined at each of the developmental stages by a radioimmunoassay. Freshly laid contained low amounts free and conjugated ecdysteroids (c. 120 ng ecdysone equivalents per g wet wt.). A slight increase around day 8/9 (time cuticle secretion) was followed conspicuous rise ecdysone, 20-hydroxyecdysone polar tenth day, that means one before hatching larvae. To examine possible metabolic transformations contributing to this immunoreactive during late embryogenesis, metabolism [3H]ecdysone administered vitellogenic females investigated. showed labelled ecdysteroids, mainly an apolar form. This pattern hormones did not change significantly embryonic development. Comparable studies with [4–14C] cholesterol os ovipositing revealed similar patt...
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