When this happens, the thyroid gland is no longer under pituitary control. The amount of hormone it produces is dependent on levels of TSI. TSI are the direct cause of hyperthyroidism in Gravesâ disease and various immune system chemicals known as cytokines also contribute to the symptoms that occur in this disorder.
Confidence votes 20. Female Iguanas will lay eggs when they become sexually mature, which is around 1.5 to 2 years old. They do not need to be fertilized to lay so therefore do not need a male Iguana. They need to be healthy before they lay or else there can be very serious problems.
Most mating and egg laying is in late winter or early spring. The male will bite her on the back of the neck, line up their vents and will mate with the female. The leopard gecko eggs will develop in pairs. As the eggs grow you will notice her gain weight and can possibly see the eggs through the belly skin.