Nuclear Behaviour in the Malpighian Tubes of Triatoma infestans (Reduv., Hemiptera)

Abstract

Nymphal Malpighian tubes of Triatoma infestans Klug have polyploid nuclei, as other insect groups. These nuclei, however, show heterochromatic bodies which have the number of replication steps not always in accordance with the euchromatin ones, in what they are similar to the Diptera. The nuclear volume does not follow the same increase in the DNA content per nucleus.