Abstract Drosophila grisea and macroptera were collected in caves overwintering as adults. The females remained in a state of reproductive diapause which extended until May for macroptera and until July for grisea, whereas the males of both species had mature sperm at all times. Termination of the reproductive diapause under laboratory conditions was accomplished in grisea by exposing them to 14 hr of illumination daily and in macroptera by increasing the temperature to 20°C. Topical application of juvenile hormone (JH) on diapausing grisea caused a prompt termination of diapause and maturation of oocytes within 10 days. Yolk proteins were found in the haemolymph of diapausing flies but not in their ovaries. In the JH-treated flies, yolk proteins were found in both the haemolymph and the ovaries, suggesting that in this species JH regulates the uptake of yolk proteins.
Juvenile hormone induces ovarian development in diapausing cave-dwelling Drosophila species.
Published 1974 in Journal of insect physiology
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- Publication year
1974
- Venue
Journal of insect physiology
- Publication date
1974-09-01
- Fields of study
Biology, Medicine, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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