Abstract
DNA content in the whole body of Ephestia kuehniella remained almost unchanged for the first 2–5 days after the larval-pupal ecdysis and then rose continuously throughout subsequent development until day 7 (pharate adult). After emergence the content of DNA reached a maximum. Essentially the same pattern was observed in both sexes. Although some differences were observed between sexes, changing pattern of RNA content in the whole body during metamorphosis can be divided into three phases. The content of RNA showed the U-shaped pattern throughout the course of life cycle when graphed against histolysis of larval organs and histogenesis of adult organs. Once the adult tissues were formed and emergence accomplished, the amount of RNA decreased in both sexes. The sexual difference in changing pattern of RNA/ DNA ratio in the whole body was discernible and reached a maximum level at 5-day pupa (males) and at 8-day pupa (females) and to the lowest level in the adult stage in both sexes.
Published Version
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