Sexual differentiation of nymphal corpora allata and the effects of ovariectomy on adult gland morphometrics inBlattella germanica
- 1 January 1991
- journal article
- Published by Springer Nature in Cellular and Molecular Life Sciences
- Vol. 47 (1) , 81-83
- https://doi.org/10.1007/bf02041260
Abstract
Changes in the number of corpus allatum (CA) cells were investigated in nymphs and in intact and ovariectomized adult femaleBlattella germanica. The CA of intact adult females exhibit cyclic changes in volume in relation to juvenile hormone (JH) synthesis, while the CA of ovariectomized females become significantly hypertrophied as a result of a gradual and continuous increase in volume that is independent of JH biosynthesis. In both intact and ovariectomized females changes in JH synthesis and CA volume are not related to total cell number which remains relatively constant. However, adult females have twice as many CA cells as do adult males as a result of a female-specific increase in total cell number late in the last nymphal instar.Keywords
This publication has 18 references indexed in Scilit:
- Farnesoic acid-stimulated rates of juvenile hormone biosynthesis during the gonotrophic cycle in Blattella germanicaJournal of Insect Physiology, 1989
- In vitro biosynthesis of JH III by the corpora allata of adult females of Blattella germanica (L)Insect Biochemistry, 1987
- Cellular and volumetric changes in relation to the activity cycle in the corpora allata of Diploptera punctataJournal of Insect Physiology, 1981
- Correlation between haemolymph juvenile hormone titre, corpus allatum volume, and corpus allatum in vivo and in vitro activity during oocyte maturation in a cockroach (Nauphoeta cinerea)General and Comparative Endocrinology, 1978
- Control of juvenile hormone biosynthesis during the reproductive cycle of a viviparous cockroach II. Effects of unilateral allatectomy, implantation of supernumerary corpora allata, and ovariectomyGeneral and Comparative Endocrinology, 1978
- Corpus allatum activity in vitro during the reproductive cycle of the viviparous cockroach, Diploptera punctata (eschscholtz)General and Comparative Endocrinology, 1977
- The synthetic activity and glandular volume of the corpus allatum during ovarian maturation in the desert locustLife Sciences, 1975
- The Physiology of Insect ReproductionPublished by Elsevier ,1970
- HISTOPHYSIOLOGICAL STUDIES ON THE CORPUS ALLATUM OF LEUCOPHAEA MADERAE. I. NORMAL LIFE CYCLE IN MALE AND FEMALE ADULTSThe Biological Bulletin, 1958
- Die Steuerung der Ovarfunktion bei der ovoviviparen Schabe Leucophaea maderae (Fabr.)Journal of Insect Physiology, 1957