Abstract

Abstract Vitellogenesis continues unhindered during the first 2 days after precocene II treatment of vitellogenic female locusts bearing terminal oocytes up to 4 mm in length. The growth rate of these oocytes remains normal, but the corpora allata of treated females are inactive insofar as juvenile hormone synthesis is concerned. This response differs fundamentally from that occasioned by extirpation of the corpora allata, wherein oocyte growth ceases shortly there-after.

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