Abstract

The fate of injected [3H]ecdysone has been investigated in female and male adults of the Mediterranean field cricket, Gryllus bimaculatus (de Geer). The metabolism is similar in both sexes and at various stages of adult life. Several classes of apolar metabolites (A1–A5) represent the major compounds. The amount of polar conjugates is low in all tissues, as are the concentrations of 20-hydroxyecdysone. Ovaries are the only organs capable of storing considerable amounts of ecdysteroids. The amount of radiolabeled ecdysteroid activity (mostly [3H]ecdysone) excreted during the first 24 hr after injection is high.

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