CENTRIOLE ADJUNCT DEVELOPMENT IN THE COCKROACH, EUBLABERUS POSTICUS

Abstract

With elcctron nlicroscopy it is possible to rccopize and dcscribe the development of the cerltriolc adjunct during spermiogencsis of thc cockroach, Ez~blnberus posticzls, an orthopteran insect. The four stages identificd may be classified as: ( 1 ) presumptive granular stage; (2) endoplasmic reticulum associated stage; ( 3 ) ordered granular and vacuolate stage; and (4) mature stagc.