Kestemont, P. (1990) Dynamic aspects of ovogenesis in an asynchronous fish, the gudgeon Gobio gobio L. (Teleostei, Cyprinidae), under controlled temperature and photoperiod conditions. Aquatic living resources/Ressources vivantes aquatiques, pp. 61-74
| Species | Development state | Trait | Primary Data | Secondary Data |
| Gobio gobio | Female | Oocyte development | Develops oocyes asynchronously | Asynchronous |
| Gobio gobio | Female | Onset of oogenesis | In October, all fishes were at the same stage of development and only contained stage 1 and 2 ooctyes. Stage 3, reached in November, continued until April as the most advanced stage. | ['April', 'October', 'November'] |
| Gobio gobio | Female | Intensifying oogenesis activity | Enlargement of ooctyes by accumulation of yolk globules caused a marked increase in GSI in May | ['May'] |
| Gobio gobio | Female | Maximum GSI value | 13.5 [End of May in the control group] | 13.5 percent |
| Gobio gobio | Female | Resting period | From July, the ovary started a recovery phase and only contained stage 1 and 2 ooctyes. One ot two months of quiscence following summer spawning | 1.0 months |