Endocrine regulations of ovarian maturation in the cockroach Blaberus discoidalis.
The first gonotrophic cycle of oocyte maturation was defined for virgin Blaberus discoidalis cockroaches. A high correlation was found between growth of the basal oocytes and increased ovarian protein content. Allatectomy blocked ovarian protein formation, whereas JH-III administration compensated for the loss of the corpora allata. Experiments involving neuro-endocrine surgery and hormone replacement therapy indicated that JH, alone, could stimulate ovarian protein formation; however, the addition of neuroendocrine extracts enhanced the JH effects. The data suggest that both JH and neurohormones stimulate aspects of ovarian protein formation in this insect.
Keeley
L L
LL
McKercher
S R
SR
D000818:Animals; D003058:Cockroaches / Q000502:physiology*; D004702:Endocrine Glands / Q000502:physiology*; D005260:Female; D007605:Juvenile Hormones / Q000502:physiology; D010053:Ovary / Q000254:growth & development* / Q000378:metabolism; D011506:Proteins / Q000378:metabolism
D007605:Juvenile Hormones; D011506:Proteins