[Formation of endopolyploid cells with the morphology of classic endomitosis during ontogenesis of the desert locust, Schistocerca gregaria (Forskal) (Orthoptera)]

Abstract

The morphological observations of cells of the basal region of seminal follicles, studies of 3H-thymidine and 3H-uridine incorporation and results of cytophotometric DNA determination have shown that during the larval development the cells which have morphological features of classical endomitosis in the differentiated state are reproduced. Their reproduction and polyploidization takes place in the definite, morphologically delineated zone in the basal region of seminal follicle. From the latter zone these cells migrate in the middle zone where they function. At the same time changes in their morphology are observed: cell flattening, chromatin loosening in the nuclei, appearance of morphologically distinct chromosomes. The level of 3H-uridine incorporation increases.