Effects of octopamine on reproduction, juvenile hormone metabolism, dopamine, and 20-hydroxyecdysone contents in Drosophila.
The effect of an experimentally increased octopamine content (feeding flies with OA) on the levels of juvenile hormone (JH) degradation, dopamine (DA), and 20-hydroxyecdysone (20E) contents, oogenesis, and fecundity of wild type Drosophila flies has been studied. OA feeding of the flies was found to (1) cause a considerable decrease in JH degradation in females, but not males, of D. melanogaster and D. virilis; (2) have no effect on DA content in D. melanogaster and D. virilis; (3) increase 20E contents in D. virilis females; (4) decrease to a large extent the number of vitellogenic (stages 8-10) and mature (stage 14) oocytes in D. virilis; and (5) decrease the fecundity of D. melanogaster and D. virilis. A possible mechanism of action of OA as a neurohormone on the reproductive function of Drosophila is discussed.
Gruntenko
N E
NE
Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia.
Karpova
E K
EK
Alekseev
A A
AA
Chentsova
N A
NA
Bogomolova
E V
EV
Bownes
M
M
Rauschenbach
I Yu
IY
D000316:Adrenergic alpha-Agonists / Q000494:pharmacology*; D000818:Animals; D004298:Dopamine / Q000032:analysis; D004331:Drosophila melanogaster / Q000187:drug effects / Q000502:physiology; D018428:Drosophilidae / Q000187:drug effects* / Q000502:physiology; D004441:Ecdysterone / Q000032:analysis; D005260:Female; D005298:Fertility / Q000187:drug effects; D007605:Juvenile Hormones / Q000032:analysis / Q000378:metabolism; D008297:Male; D009655:Octopamine / Q000494:pharmacology*; D009866:Oogenesis / Q000187:drug effects*; D013997:Time Factors
D000316:Adrenergic alpha-Agonists; D007605:Juvenile Hormones; D009655:Octopamine; D004441:Ecdysterone; D004298:Dopamine