Cellular and volumetric changes in relation to the activity cycle in the corpora allata of Diploptera punctata |
| |
Authors: | Catharine M Szibbo Stephen S Tobe |
| |
Institution: | Department of Zoology, University of Toronto, 25 Harbord Street, Toronto M5S 1A1, Ontario, Canada |
| |
Abstract: | In the corpora allata (CA) of the viviparous cockroach, Diploptera punctata, a cycle of juvenile hormone (JH) synthesis during ovarian maturation can be correlated with cyclical changes in CA volumes and cell numbers. Uptake of 3H]-thymidine occurs in nuclei of CA cells during periods of increase in cell number. Both members of a pair of CA maintain symmetry of volume, cell number and rate of JH synthesis. After a cycle of CA activity, the CA can be transplanted to a young, allatectomized female, where they support a second wave of oöcyte development. |
| |
Keywords: | To whom all correspondence should be addressed |
本文献已被 ScienceDirect 等数据库收录! |
|