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Related to ecdysone: juvenile hormone


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

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.




(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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɛk dəˌzoʊn, -ˌsoʊn)

an insect hormone that stimulates metamorphosis.
[1955–60; ecdys (is) + -one]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
On the study of ecdysone, Zhao and Lu (2004) observed ultrastructure of Y-organ during the molting cycle.
Prothoracic glands secreting ecdysone hormone in larval instars, are larval structures that disintegrate gradually by hemocytic autolysis in the pupal period and then disappear completely in the adult life of the insect.
Azadirachtin isstructurally similartothe insect ecdysone hormones, which control the process of metamorphosis as the insects pass from larva to pupa to adult.
Effects of the neem three components azadirachtin, salanin, nimbin, and 6- desacetylnimbin on ecdysone 20-monooxygenase activity.
Cuticular protein and transcription factor genes expressed during prepupal-pupal transition and by ecdysone pulse treatment in wing discs of Bombyx mori.
Thummel, "GFP in living animals reveals dynamic developmental responses to ecdysone during Drosophila metamorphosis," Developmental Biology, vol.
Caption: FIGURE 2: Chemical structure of cortisol (a) and ecdysone (b).
As one possibility, ecdysone signaling is an innate immunity maturation or immunity-stimulating hormonal agent [19, 20].
Ignesti et al., "Drosophila 4EHP is essential for the larval-pupal transition and required in the prothoracic gland for ecdysone biosynthesis," Developmental Biology, vol.
Effects of ecdysone agonist halofenozide against Culex pipiens.