[In vivo and in vitro study of the action of dopamine on oocyte growth and juvenile hormone production in Blattella germanica (L.) (Dictyoptera; Blattellidae)].
In vivo, within the first ovarian cycle of B. germanica, dopamine (1 microgram/cockroach) enhanced oocyte growth when injected on day 1 or 2, just before vitellogenesis, whereas it induced the inverse effect on day 6-7, at the end of vitellogenesis. In vitro, dopamine (10(-4) M) stimulates juvenile hormone production by incubated corpora allata from 2-day-old females, and inhibited it on 6-day-old glands. The physiological significance of these effects is discussed.
Pastor
D
D
Departament de Quimica, Orgànica Biològica, C.I.D., C.S.I.C., Barcelona, Espagne.
Piulachs
M D
MD
Cassier
P
P
André
M
M
Bellés
X
X
D000818:Animals; D003058:Cockroaches / Q000166:cytology / Q000378:metabolism; D004298:Dopamine / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005260:Female; D066298:In Vitro Techniques; D007605:Juvenile Hormones / Q000096:biosynthesis*; D009865:Oocytes / Q000187:drug effects* / Q000254:growth & development
D007605:Juvenile Hormones; D004298:Dopamine
Etude in vivo et in vitro de l'action de la dopamine sur la croissance des ovocytes et la production d'hormone juvénile chez Blattella germanica (L.) (Dictyoptera; Blattellidae).