... larval period seen in the SS population is indicative of reduced and delayed ecdysone signaling. An enzyme immunoassay for ecdysteroids (with greatest affinity to the metabolically active 20-hydroxyecdysone and the α-ecdysone precursor) confirmed that the SS population had reduced and delayed hormone...

... ), all of the EdU-labeled hemocytes we observed across treatments were granulocytes. Fig. 1. Aedes aegypti hemocytes express the insulin receptor (IR), ovary ecdysteroidogenic hormone receptor (OEHR) and ecdysone receptor (EcR), but only insulin-like peptide 3 (ILP3) stimulates cells...

... and Drosophila melanogaster , the larval size at which metamorphosis is initiated largely determines adult size, and metamorphosis is initiated when larvae attain a critical mass. We hypothesized that oxygen effects on final size might be mediated by oxygen effects on the critical weight and the ecdysone titers...

... suggests that elevated ecdysone may facilitate onset of diapause in A. socius . Upregulation seen for the transcription factors Reptin and TFDp2 may serve to depress transcription and cell cycle progression. Cathpesin B-like protease, ACLY and MSP are three downregulated genes associated with yolk...

...Thomas Flatt; Andreas Heyland; Florentina Rus; Ermelinda Porpiglia; Chris Sherlock; Rochele Yamamoto; Alina Garbuzov; Subba R. Palli; Marc Tatar; Neal Silverman SUMMARY Juvenile hormone (JH) and 20-hydroxy-ecdysone (20E) are highly versatile hormones, coordinating development, growth, reproduction...

... Caenorhabditis elegans ; domain IV was replaced by a unique `T domain' sequence. It was expressed in most tissues,except eyestalk ganglia and Y-organ. The effects of elevated ecdysteroid,induced by eyestalk ablation, on calpain and ecdysone receptor (Gl-EcR) mRNA levels in skeletal muscles were quantified...

... male or female emerges from the host puparium. The developmental analysis of Ganaspis xanthopoda reveals a tight synchrony between host and parasitoid development which is, at least in part, dependent on the ecdysone levels of the host. © 1999 by Company of Biologists 1999 development...

...R. D. Watson; T. K. Williams; W. E. Bollenbacher ABSTRACT A recently isolated haemolymph protein appears to be an important regulator of ecdysone biosynthesis by prothoracic glands in Manduca sexta . Using a dose-response titration protocol, the haemolymph titre of this stimulatory factor...

... of ecdysone sensitivity . Devi Biol . 54 , 172 – 186 . 10.1016/0012-1606(76)90297-9 Mitsui , T. & Riddiford , L. M. ( 1978 ). Hormonal requirements for the larval-pupal transformation of the epidermis at Manduca sexta in vitro . Devi Biol . 62 , 193 – 205 . 10.1016/0012...

...Wendy A. Smith; M. F. Bowen; Walter E. Bollenbacher; Lawrence I. Gilbert ABSTRACT Prothoracic glands from diapausing pupae of the tobacco hornworm, Manduca sexta , synthesize markedly less ecdysone in vitro in response to prothoracicotropic hormone (PTTH) than do glands from non-diapausing pupae...

... of the steroid moulting hormone is thought to be responsible for the diapause state and it is apparently a consequence of the failure of the diapausing pupal prothoracic glands (PG) to synthesize ecdysone at an increased rate. In Manduca , this apparent failure of PG activation during diapause may be in response...