Fig. 1.

Reproduction-related problems in finfish aquaculture. The inner circle shows the different stages of the typical life cycle of finfish (not referred to any particular species), starting clockwise with the zygote, and indicating the approximate stage when marketing takes place. The middle circle shows events related to reproduction, starting with sex determination and finishing with spawning. The outer circle shows typical reproduction-related problems in aquaculture, linked to the former reproductive events (see text for further explanation). The shaded area represents the issues dealt with in this paper