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''Ctenosaura bakeri'', also known as the Utila iguana, Baker's spinytail iguana, swamper or ''wishiwilly del suampo'', is a critically endangered species of spinytail iguana endemic to the island of Utila, one of the Islas de la Bahía off the coast of Honduras.〔 〕 The Utila iguana is the only species of iguana and one of only two species of lizard to exclusively inhabit brackish mangrove swamps, forced there due to competition from larger species.〔 It is the smallest of the three species of iguana found on Utila, and unique among spiny-tailed iguanas as it is born a dark color as opposed to bright green or yellow.〔 It is arboreal and primarily herbivorous, although it can be an opportunistic carnivore.〔 Males may grow up to in length, while females are smaller, with a length of up to . Eggs are laid in sandy beaches and hatch about 60–76 days later, with the hatchlings returning to live in the mangrove forests. Brought to the brink of extinction by the 1990s due to hunting, it was brought back to international attention by German herpetologist Dr. Gunther Köhler and his book ''Reptiles of Central America''.〔 Although several zoos and wildlife associations have instituted programs for the iguanas on Utila, the species still finds itself threatened due to overhunting and may face more of a threat in the form of habitat loss.〔 Extreme conservation efforts are in place to try to prevent this species from going extinct.〔 == Taxonomy == ''Ctenosaura bakeri'' was first described by Norwegian-born American zoologist Leonhard Hess Stejneger in 1901, while working for the Smithsonian Institution. The generic name, ''Ctenosaura'', is derived from two Greek words: ''ctenos'' (Κτενός), meaning "comb" (referring to the comblike spines on the lizard's back and tail), and ''saura'' (σαύρα), meaning "lizard". Its specific name, ''bakeri'', is the Latinized form of Stejneger's friend and colleague Frank Baker, who was a former director of the National Zoo in Washington, D.C..〔 The species is believed to have evolved from mainland-based ancestors, and may share ancestors with ''C. melanosterna'' and ''C. palearis'', as it is phylogenetically closer to these two than it is to ''C. similis''. Access to Utila may have involved over-water dispersal during hurricanes, as is known for ''Iguana iguana'' in the Lesser Antilles or a land bridge to the mainland lost during the close of the last ice age.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ctenosaura bakeri」の詳細全文を読む スポンサード リンク
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