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.
Iguanas are reptiles and nearly all reptiles lay eggs. There are some reptiles that do not lay eggs, but they are very rare. Female iguanas usually lay a clutch of eggs every year once they're mature. If there is no male iguana, she will still lay eggs, but they won't be fertile.
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 ...