| Classical eyestalk ablation experiments have demonstrated that malacostracan reproduction is under sinus gland control. |
| We also report the presence of eyestalk attachments in both Achoania and Psarolepis. |
| Ablation of one eyestalk is generally practised in all commercial prawn hatcheries to induce gonad matura-tion and spawning. |
| In the meantime the snail's eyestalk regenerates, and the cycle is repeated when another sac passes into the new eyestalks. |
| Older follicles in the ovary, however, may secrete a vitellogenin-stimulating hormone that overrides the effects of the eyestalk neurohormone. |
| Serotonin injection was evaluated as an alternative to female eyestalk ablation for induction of ovarian maturation and spawning in P. vannamei. |
