Blue Rock Iguana
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REPTILIA: SQUAMATA: IGUANIDAE: Cyclura

Cyclura lewisi Grant, 1940

Blue Rock Iguana

Photo & author credits

 

Range: Cuba and the Cayman islands.

Diagnosis:

Description:

Natural History: This critically endangered lizard is called the most endangered iguana on earth by researchers. Recent surveys put wild populations at 15-30 individuals, though captive propagation efforts have been successful in keeping total numbers much higher. Causes of extermination include habitat destruction and predation by feral animals, notably introduced rats and cats.

The success in breeding these animals no doubt is partly related to their beautiful blue coloring, making them highly desirable species with which to work. They are also considerably slimmer in aspect than other Cyclura, arguably making them the most striking of the rhinoceros iguanas.

These are huge lizards, growing to some five feet in length and weighing in excess of 18 pounds as adults. The head is notably more elongate and depressed in shape than all other species of Cyclura except C. nubila. Blue iguanas are naturally residents of dry scrub where they are primarily terrestrial. Young iguanas, and to a lesser extent adults, may climb when in search of foods, including fruits, soft leaves, and flowers. 

Reproduction: Mating takes place in April-May, and females lay clutches of 2 to 20 eggs some 30 days later.

Taxonomy & Relationships:

Variation:

Additional Comments:

Type Specimen:

Literature:

Dorge, Ray. 1996. A tour of the Grand Cayman blue iguana captive breeding facility. Reptiles 4(9): 32-42.

Schwartz, Albert, and Robert Henderson. 1991. Amphibians and reptiles of the West Indies: descriptions, distributions, and natural history. University of Florida Press.