The Hormonal Control of Colleterial Gland Secretion

Abstract

1. Methods for the quantitative assay of the activities of the left and right colleterial glands of adult cockroaches (Periplaneta americana) are reported. The former involves the spectrophotometric measurement of the content of protocatechuic acid glucoside of the gland; the latter the measurement of glucosidase activity by orthodox use of a chromogenic substrate. 2. Glucoside and glucosidase have been studied in terms of accumulation and turnover. 3. The accumulation of the glucoside requires the presence of active corpora allata, but glucosidase synthesis is seemingly independent of this.