COCKROACH MOLTING. I. TEMPORAL ORGANIZATION OF EVENTS DURING MOLTING CYCLE OF BLATTELLA GERMANICA (L.)

¹ Biology Department, Case-Western Reserve University, and Zoology Department, University of Massachusetts at Amherst, Amherst, Massachusetts 01002

1. A temporal map of events during the molting cycle of Blattella germanica has been established.

2. The molting cycle can be divided into two discrete phases, the intermolt and the molting phase.

3. Molting phase events are delayed jointly when leg regeneration is induced.

4. Differentiative mitoses occur during the intermolt phase while proliferative mitoses occur at the beginning of the molting phase.

5. The coordinate growth and development of the epidermis seems to be controlled by a period of cell differentiation and death during the intermolt phase.

6. It is proposed that limb regeneration feeds back to delay molting by delaying brain hormone secretion.

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