## Abstract To examine the biological significance of thyroid hormones contained in eggs, the hormones were depleted from eggs by treating the mother fish with thiourea. Constantly spawning medaka (__Oryzias latipes__) were reared in fresh water containing 0.03% thiourea. The plasma thyroxine (T4)
ON FERTILIZABILITY OF PRE-OVULATION EGGS IN THE MEDAKA, ORYZIAS LATIPES
β Scribed by TAKASHI IWAMATSU
- Book ID
- 108942010
- Publisher
- John Wiley and Sons
- Year
- 1965
- Tongue
- English
- Weight
- 765 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0012-1592
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The measurement of cellular DNA content by DNA microfluorometry revealed that medaka embryos that were fertilized with normal sperm and exposed to heat shock (41Β°C for 3 min) or hydrostatic pressure (700 kg/cm2 for 10 min) at 85-95 min after insemination were tetraploid. Embryos fertilized with norm
## Abstract To clarify the effect of exogenous estradiolβ17Ξ² (E~2~) on sex differentiation, the E~2~ content of developing eggs of __Oryzias latipes__ was measured by radioimmunoassay. Endogenous E~2~ was present in lower concentrations in ovulated, mature eggs in the ovarian cavity than in intrafo
Carotenoids were introduced into the egg yolk of the medaka by either injection or feeding. Carotenoids for injection were dissolved in either olive oil, a mixture of olive oil and castor oil or Tween 80. Capsanthin, lutein and canthaxanthin were readily transferred from the yolk to the larval xanth
## Abstract The relationship between spiral patterns in the inner wall of the micropyle and attaching and nonβattaching filaments on the chorion was investigated by electron microscopy in eggs of the medaka, __Oryzias latipes__. There were both rightβ and leftβhanded spiral patterns of attaching fi