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Related to ecdysone: juvenile hormone


A steroid hormone produced by insects and crustaceans that promotes growth and controls molting.




(Zoology) a hormone secreted by the prothoracic gland of insects that controls ecdysis and stimulates metamorphosis
[C20: from German ecdyson, from Greek ekdusis; see ecdysis]


(ˈɛk dəˌzoʊn, -ˌsoʊn)

an insect hormone that stimulates metamorphosis.
[1955–60; ecdys (is) + -one]
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References in periodicals archive ?
Developmental regulation of ecdysone receptor (EcR) and EcR-controlled gene expression during pharate-adult development of honeybees (Apis mellifera).
2011) showed that in the cladoceran crustacean species Daphnia magna, RXR is activated by TBT and elicits toxicity by interfering with the ecdysone signaling pathway.
The roles of juvenile hormone, ecdysone and the ovary in the control of Drosophila vitellogenesis.
Our current working theory is based upon an inference that PCP may act as an antagonist on ecdysone receptors related to growth and development.
Female lobsters were used in this study to reduce the variability that would have been introduced by analyzing lobsters of both genders, because severe cases of ESD are relatively common in ovigerous females, and because abnormal molting and ecdysone levels have been reported in females with signs of ESD (Laufer et al.
remota has led to the identification of various compounds like ajugarin I, II an III along with ajugasterone C, ajugalactone, cyasterone, [beta] ecdysone and ergosterol 5, 8-peroxide.
Fifth larval instar Manduca sexta midgut mitochondria catalyze ecdysone conversion to the active hormone, 20-hydroxyecdysone, via ecdysone 20-monooxygenase (E-20M).
On the basis of the mode of action, IGRs are grouped into three categories: juvenile hormones (JHs) and their analogs (JHAs), also called juvenoids; ecdysone agonists (EA); and chitin synthesis inhibitors (CSIs) or molt inhibitors (MIs) [26].
This process is controlled by ecdysone, an insect hormone that regulates gene activity during metamorphosis (development), reproduction and moulting.
The rate of synthesis and secretion of ecdysone by the Y-organ is negatively regulated by the X-organ sinus gland complex.
The exogenous application of ecdysone or their allied forms generally upsets the hormonal titre in the body and results in moulting disorder (Giesultwiz et al.
Drosophila ultraspiracle modulates ecdysone receptor function via heterodimer formation.