This article was accepted into the corpus but its outbound wikilinks were never NER-processed — typical at the deepest BFS hop or when the run's entity cap was reached. No expansion funnel to show.
| Cyclura ricordii | |
|---|---|
| Name | Ricord's rock iguana |
| Status | CR |
| Status system | IUCN3.1 |
| Genus | Cyclura |
| Species | ricordii |
| Authority | (Duméril & Bibron, 1837) |
Cyclura ricordii Cyclura ricordii is a critically endangered rock iguana endemic to Hispaniola, known from the southern Dominican Republic and historically from Haiti. This large herbivorous lizard occupies karstic limestone and coastal scrub, and has been the focus of conservation efforts involving international organizations and local governments. Field studies by universities and conservation NGOs have documented its ecology, threats from habitat loss, and population declines driven by introduced predators and human activities.
Cyclura ricordii was described in 1837 by André Marie Constant Duméril and Gabriel Bibron, originally placed within early 19th-century herpetological classifications influenced by Georges Cuvier and Jean-Baptiste Lamarck. The species name commemorates the French physician and naturalist Alexandre Ricord, linking the taxon to 19th-century scientific networks in Paris and colonial Caribbean collections. Subsequent systematic work by Edward Drinker Cope, Richard Thomas, and Stephen Blair Hedges refined Cyclura relationships using morphological comparisons and later molecular analyses by institutions such as the Smithsonian Institution, Harvard Museum of Comparative Zoology, and University of Florida. Modern phylogenetic studies published in journals and conducted by researchers affiliated with the American Museum of Natural History and Royal Ontario Museum have positioned this taxon within Cyclura alongside congeners like Cyclura cornuta and Cyclura cychlura.
Adults reach substantial sizes comparable to other Cyclura species, with robust bodies, powerful limbs, and a keeled dorsal crest reminiscent of descriptions by early naturalists such as Charles Darwin and Alfred Russel Wallace. Coloration varies geographically, with tones ranging from gray-brown to olive and occasional orange or turquoise highlights noted in field reports by the Caribbean Herpetology group and the International Union for Conservation of Nature assessments. Morphological characters used in diagnoses include dorsal scale counts, femoral pore numbers, and hemipenis structure, data recorded in museum collections at institutions like the Natural History Museum, London, Muséum national d'Histoire naturelle, and Yale Peabody Museum. Sexual dimorphism is present: males develop enlarged jowls and more prominent dorsal crests, traits catalogued in comparative monographs and theses from Universidad Autónoma de Santo Domingo and University of Puerto Rico.
Cyclura ricordii occupies southwestern Hispaniola, with confirmed populations in Barahona Province, Pedernales, and the Bahoruco region; historical records suggest wider former range including parts of Ouest Department, Haiti. Habitats include xeric coastal scrub, thorn forest, limestone karst, and dry tropical thorn-scrub mosaics associated with coral rag and mangrove ecotones studied by Caribbean ecologists and mapped by conservation NGOs such as Re:Wild and Fauna & Flora International. Protected areas and reserves under Dominican government and international cooperation—managed in partnership with organizations like the World Wildlife Fund, Global Environment Facility, and local NGOs—contain critical habitat fragments; however, agricultural expansion, tourism development, and infrastructure projects documented by UNEP and USAID have fragmented these landscapes.
Cyclura ricordii exhibits territorial basking and sedentary behavior typical of Cyclura species, with daily activity patterns influenced by solar radiation and diel cycles recorded in field studies by researchers from Universidad Autónoma de Santo Domingo and University of the West Indies. Social interactions include head-bobbing, push-up displays, and substrate signaling comparable to behaviors described by ethologists at the Smithsonian Tropical Research Institute and British Ecological Society publications. Burrow use for shelter and nesting has been observed near coastal dunes and limestone outcrops; burrow ecology has been investigated in collaboration with conservation programs supported by the Mohamed bin Zayed Species Conservation Fund and Zoological Society of London. Predation pressure from introduced mammals such as dogs and mongooses has altered antipredator behavior, a pattern discussed in comparative studies involving the IUCN Iguana Specialist Group and local research teams.
Primarily herbivorous, Cyclura ricordii consumes leaves, flowers, fruits, and seeds of native plants including Prosopis, Opuntia, Coccoloba, and other xerophytic taxa catalogued in Dominican floras and botanical surveys by Kew Gardens and local herbaria. Seasonal supplement by invertebrates and carrion occurs, as recorded in stomach-content analyses conducted by university laboratories and published in journals overseen by Wiley and Elsevier. Seed dispersal roles and interactions with endemic plants have been documented, implicating the species in ecological processes highlighted by the Millennium Ecosystem Assessment and regional restoration initiatives.
Breeding is seasonal with courtship, copulation, and nest-site selection occurring in the dry season; females deposit clutches in excavated nests in sandy or loamy soils, reproductive parameters characterized in studies by researchers at the Caribbean Herpetological Institute and the Reptile and Amphibian Conservation core programs. Clutch size, incubation periods, and hatchling survival rates vary with site-specific conditions and have been monitored by projects funded by the Critical Ecosystem Partnership Fund and National Geographic Society. Juveniles undergo ontogenetic color and morphological changes before reaching sexual maturity several years post-hatching, life-history traits compared across Cyclura congeners in comparative life-history reviews.
Listed as Critically Endangered by IUCN, Cyclura ricordii faces threats from habitat destruction due to agriculture, charcoal production, tourism infrastructure, and urbanization documented by the World Bank and Dominican environmental authorities. Invasive species—feral dogs, rats, mongooses—predate eggs, juveniles, and adults, a problem addressed in eradication and control programs led by NGOs, governmental agencies, and academic partners including the IUCN Iguana Specialist Group and local conservation trusts. Additional pressures include illegal collection for the pet trade, road mortality, and limited genetic diversity identified in population genetic studies conducted by international research consortia. Conservation actions encompass habitat protection in national parks, captive-breeding and head-start programs at zoological institutions like Omaha’s Henry Doorly Zoo and ZooMontana, community-based conservation initiatives supported by USAID and European Union grants, and transboundary policy efforts involving Dominican and Haitian stakeholders. Continued monitoring, law enforcement, ecological research, and funding from philanthropic foundations remain essential to avert extinction.
Category:Endemic fauna of Hispaniola Category:Reptiles of the Dominican Republic