Title: A re-investigation on the ecdysteroids during embryogenesis in the desert locust, Schistocerca gregaria
Abstract: Comparison of gas chromatography and high-pressure liquid chromatography methods for determination of ecdysteroids in insect eggs revealed that published values for Schistocerca gregaria were very low. The error has been traced to incomplete hydrolysis of conjugates. Revised values for the levels of ecdysone, 20-hydroxy-ecdysone and 2-deoxy-ecdysone are given here. The same general pattern of falling ecdysteroid titre during early stages of embryo development followed by an increase and a final decrease is observed. Experiments have been made on the effect of phosphate, ionic strength and a specific β-glucuronidase competitive inhibitor on the hydrolysis of the polar ecdysteroid conjugates, in an attempt to provide more evidence on the chemical nature of these compounds.
Publication Year: 1982
Publication Date: 1982-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 36
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot