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.
The Blue Iguana Recovery Program (under the auspices of the National Trust for the Cayman Islands) is successfully breeding blue iguanas, rearing them to two years old and releasing them into the Queen Elizabeth II Botanic Park on Grand Cayman. This restored population began breeding in 2001. Currently, nests laid in the Park are collected and the eggs incubated to give hatchlings a head start. In the long term, the program seeks to expand this successful pilot project by establishing a ...