Cyclura rileyi nuchalis
Acklins ground iguana | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Squamata |
Suborder: | Iguania |
Family: | Iguanidae |
Genus: | Cyclura |
Species: | |
Subspecies: | C. r. nuchalis
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Trinomial name | |
Cyclura rileyi nuchalis Barbour and Noble, 1916
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The Acklins ground iguana (Cyclura rileyi nuchalis), also commonly known as the Watling Island iguana, is an endangered subspecies of lizard of the genus Cyclura it is one of three subspecific forms of Cyclura rileyi in the family Iguanidae.
Taxonomy
The Acklins ground iguana is a recognized subspecies of the San Salvador rock iguana, recognized as such since 1975.[1] Its specific name, rileyi, is a Latinized form of the name of American biologist, Joseph Harvey Riley.[2]
Anatomy and morphology
The Acklins ground iguana strongly resembles the
This subspecies, like other members of Cyclura, is
Distribution
The Acklins ground iguana is endemic to three small cays in the Bahamas.
Natural populations of Acklins ground iguanas are found only on Fish Cay and North Cay in the Acklins Bight, Bahamas.[5] They formerly inhabited Long (Fortune) Cay. An additional introduced population with five founding individuals was established on a small cay in the early 1970s.[5][6]
These two populations are made up of 12,500-18,800 individual animals.[5] A translocated population in the Exumas Land and Sea Park contains 300 animals and appears to be stable.[5]
Diet
Like all Cyclura species the Acklins ground iguana is primarily herbivorous, 95% of which from consuming leaves, flowers and fruits from 7 different plant species such as seaside rock shrub (Rachicallis americana), and erect prickly pear (Opuntia stricta). This diet is very rarely supplemented with animal matter, although a wild specimen has been recorded eating mice.[5]
Mating
Mating occurs between May and June depending on when the dry season ends, and 2-5 eggs are usually laid within 40 days depending on the size and age of the female.[6] Some females have been observed migrating to coastal areas on the various cays in order to build their nests in the sand, and some guard the nest site for a short period of time.[6] The hatchlings emerge from the nests in August to early September.
Habitat
Unlike every other species of Cyclura the Acklins ground iguana is free of threats by feral predators.
The Acklins Cays also have an abundance of food and vegetation compared to the cays on which other iguanas are found and this also must be considered as a factor in their success.[5] Sea level rise may be the greatest threat these animals face in the future, as the cays lack elevation relief and a sea level rise of 1 meter over the next 100 years could cost the cays up to 50% habitat loss.[5]
References
- ^
Hollingsworth, Bradford D. (2004), "The Evolution of Iguanas: An Overview of Relationships and a Checklist od Species", Iguanas: Biology and Conservation, University of California Press, pp. 35–39, ISBN 978-0-520-23854-1
- ^ "Riley, Joseph - Biography", Washington Biologists' Field Club, Patuxent Wildlife Research Center
- ISBN 1-882770-18-8
- ISBN 978-0-520-23854-1
- ^ a b c d e f g h i j
Hayes, William; Carter, Ronald; Cyril, Samuel; Thornton, Benjamin (2004), "Conservation of an Endangered Bahamian Rock Iguana, I", Iguanas: Biology and Conservation, University of California Press, pp. 232–243, ISBN 978-0-520-23854-1
- ^ a b c Thornton, Benjamin (June 2000), Nesting Ecology of the Endangered Acklins Bight Rock Iguana, Cyclura Rileyi Nuchalis, In The Bahamas, abstract, Andrews University.