Cyclura cornuta — LLMpedia

Cyclura cornuta
Tim Ross · Public domain · source
Name	Rhinoceros iguana
Status	EN
Status system	IUCN3.1
Genus	Cyclura
Species	cornuta
Authority	(Linnaeus, 1758)

Contents

Cyclura cornuta is a large, primarily herbivorous lizard known commonly as the rhinoceros iguana. Native to the Caribbean, it has been the subject of conservation actions involving institutions such as the IUCN, International Union for Conservation of Nature, United States Fish and Wildlife Service, World Wildlife Fund, and multiple national parks. Research and management efforts have involved organisations including the Smithsonian Institution, Royal Society, Durrell Wildlife Conservation Trust, Zoological Society of London, and regional governments such as those of the Dominican Republic and Haiti.

Taxonomy and classification

Originally described in the 18th century by Carl Linnaeus, Cyclura cornuta belongs to the genus Cyclura within the family Iguanidae. Taxonomic work has referenced type specimens from collections like the Natural History Museum, London and the Muséum national d'Histoire naturelle in studies by herpetologists associated with institutions such as the American Museum of Natural History and researchers publishing in journals supported by the Royal Society. Comparative systematics has involved molecular analyses using facilities at universities like Harvard University, University of Florida, University of Miami, Florida International University, and the University of the West Indies. Phylogenetic treatments have been discussed at conferences organized by the Society for the Study of Amphibians and Reptiles, the Herpetologists' League, and contributors from the Caribbean Conservation Corporation.

Rhinoceros iguanas are robust, heavy-bodied lizards with prominent cranial protuberances that inspired their common name; morphological descriptions are found in monographs produced by herpetologists affiliated with the American Society of Ichthyologists and Herpetologists, the Field Museum, and the Museum of Comparative Zoology. Adult size, scale patterns, and coloration have been quantified in studies conducted at research centers like the Smithsonian Tropical Research Institute and reported in outlets including the Journal of Herpetology and publications from the Caribbean Naturalist. Morphological variation among populations has been compared with specimens from the Royal Ontario Museum, the Florida Museum of Natural History, and regional collections in the Dominican Republic National Museum.

Cyclura cornuta is native to the island of Hispaniola, historically present in areas that today fall within the political boundaries of the Dominican Republic and Haiti. Subpopulations have been recorded on offshore islands and cays under the jurisdiction of entities such as the Bahamas, Turks and Caicos Islands, and formerly described in accounts from Christopher Columbus's voyages; modern surveys are coordinated with protected area agencies like the Parque Nacional Armando Bermúdez and management authorities in the Sierra de Bahoruco. Habitat descriptions come from collaborations with conservation NGOs including the Nature Conservancy, BirdLife International, and regional universities like the Universidad Autónoma de Santo Domingo.

Studies of activity patterns, thermoregulation, and diet have involved fieldwork supported by organizations such as the Caribbean Biodiversity Fund and laboratories at the University of Puerto Rico. Rhinoceros iguanas are primarily herbivorous, consuming plants common to dry forest and scrub such as species cataloged by botanists at the Royal Botanic Gardens, Kew and the Missouri Botanical Garden. Ecological interactions with species inventories compiled by the International Union for Conservation of Nature and local naturalists include relationships with frugivorous birds documented by the Cornell Lab of Ornithology, seed dispersal processes investigated by researchers at Duke University, and predator-prey dynamics involving introduced mammals noted by the United Nations Environment Programme.

Reproductive biology, nest site selection, and clutch parameters have been described in studies coordinated with universities like the University of California, Davis and institutions such as the Brookfield Zoo and the San Diego Zoo. Field studies often take place in protected areas like Parque Nacional Los Haitises and involve collaboration with veterinary departments at the University of Pennsylvania School of Veterinary Medicine. Life history parameters reported by conservation programs run by the Durrell Wildlife Conservation Trust and captive-breeding facilities at zoos accredited by the Association of Zoos and Aquariums inform management of growth rates, hatchling survival, and age at sexual maturity.

Cyclura cornuta is listed as Endangered on the IUCN Red List of Threatened Species and is protected under national laws enacted by the Dominican Republic and Haiti. Major threats include habitat loss from agriculture and development overseen by ministries such as the Ministry of Environment and Natural Resources (Dominican Republic) and deforestation documented by agencies like NASA using remote sensing. Additional pressures include hunting, invasive species introduced via shipping and trade regulated by bodies like the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), and natural disasters monitored by the Caribbean Disaster Emergency Management Agency. Conservation responses have involved partnerships with the International Union for Conservation of Nature, the World Wildlife Fund, and local NGOs supported by funders such as the Global Environment Facility.

Management actions include protected area designation by governments of the Dominican Republic and Haiti, captive-breeding and reintroduction programs run by institutions like the Houston Zoo, the Fort Worth Zoo, and the Durrell Wildlife Conservation Trust, and community outreach coordinated with organizations such as BirdLife International and local fisheries ministries. Research collaborations with universities including the University of Florida and the University of the West Indies underpin monitoring programs funded by donors including the European Union and the United States Agency for International Development. International cooperation has included agreements facilitated by multilateral organizations like the United Nations Environment Programme and conservation planning input from the IUCN Species Survival Commission.

Category:Reptiles of the Caribbean Category:Iguanidae