Seasonal changes in plasma steroid levels in relation to ovarian steroidogenic ultrastructural features and progesterone receptors in the house gecko, Hemidactylus flaviviridis , in Oman

Highlights ► Reproductive cycle of Hemidactylus flaviviridis was examined throughout the year. ► Steroid levels and PR were related to development of steroidogenic features. ► These include SER with cisternal whorls, lipid droplets and mitochondria. ► Rise in steroid levels and PR coincided with steroidogenic features of granulosa. ► These include follicular granulosa and granulosa lutein cells.