Distribution of Mercury in the Eggs of the False Melon Beetle, Atrachya menetriesi FALDERMANN (Coleoptera : Chrysomeridae), Treated with Mercuric Chloride for Breaking Diapause

Publisher Website
Google Scholar
Abstract
Mercuric chloride was effective in brewking diapause in the egg of Atrachya menetriesi.The distribution of mercury in treated eggs was examined quantitatively. To break diapause eggs were dipped in an aqueous solution of mercuric chloride (0.125mM) for 5 min. About 20 μg of mercury per 100 mg of eggs was found in the chorion and none in other parts. Only a negligible amount was found in the larvae that hatched from treated eggs. Almost all the mercury was removed when eggs were washed in a dilute solution of cysteine hydrochloride or glutathione (reduced).It seems that breaking of diapause is effected even when mercury does not penetrate the chorion.