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| Cuniculus paca | |
|---|---|
| Name | Paca |
| Status | LC |
| Status system | IUCN3.1 |
| Genus | Cuniculus |
| Species | paca |
| Authority | (Linnaeus, 1766) |
Cuniculus paca is a large Neotropical rodent of the family Cuniculidae native to Central and South America. It is notable for its distinctive spotted flanks, herbivorous diet, and nocturnal, terrestrial habits. Popular in regional folklore and subsistence hunting, the species also appears in studies of rainforest ecology, zoonotic disease, and conservation biology.
The species was described by Carl Linnaeus in 1766 and placed in early mammalian catalogs alongside taxa studied by Georges Cuvier, Johann Friedrich Blumenbach, and contemporaries in the era of the Linnaean taxonomy revolution. Modern revisions based on mitochondrial DNA and morphological analyses reference comparative work connected to researchers at institutions such as the Smithsonian Institution and the Natural History Museum, London. Debates over generic boundaries have involved authorities publishing in journals affiliated with the International Union for Conservation of Nature and regional museums of Brazil and Peru. Vernacular names include "paca" in Spanish and "tepezcuintle" in Nahuatl-derived contexts of Mexico, reflecting cultural ties examined by anthropologists from the University of Oxford and the University of Cambridge.
Adults reach body lengths comparable to larger rodents documented by researchers at the Field Museum and the American Museum of Natural History, with weight ranges cited in monographs produced by the Royal Society and satellite projects funded by the National Science Foundation. The species exhibits a robust, compact body with coarse fur patterned by rows of pale spots and stripes that have been described in comparative works alongside taxa in collections at the Royal Ontario Museum and the Museu Nacional (Rio de Janeiro). Cranial and dental morphology has been compared in studies involving specimens from the University of São Paulo and the Pontifical Catholic University of Peru, informing phylogenetic matrices published in series from the Linnean Society of London.
Cuniculus paca occurs from southern Mexico through Central America into much of South America, with range maps used by the IUCN Red List and regional conservation NGOs such as WWF and local chapters of Conservation International. Records from the Amazon Rainforest, the Atlantic Forest, and floodplain ecosystems near the Orinoco River and Amazon River are cited in biogeographic syntheses produced by the United Nations Environment Programme and research consortia including the Amazon Conservation Association. Habitats include humid lowland forests, gallery forests adjacent to rivers surveyed by teams from Yale University and the University of Florida, and secondary growth landscapes documented by NGOs operating in Colombia and Ecuador.
Nocturnal and primarily terrestrial, the species' activity patterns have been monitored with camera-trap projects led by investigators affiliated with the Smithsonian Tropical Research Institute, University of California, Berkeley, and the Max Planck Institute for Ornithology. Individuals use burrows and natural cavities studied in fieldwork supported by the National Geographic Society and echo foraging strategies compared with sympatric mammals recorded by the Royal Geographical Society. Roles as prey and seed predator have implications addressed in ecological syntheses from the American Society of Mammalogists and conservation plans coordinated with the Convention on Biological Diversity.
Herbivorous diets focus on fruits, seeds, tubers and foliage; dietary studies cite interactions with plant species cataloged by the Missouri Botanical Garden and frugivory networks analyzed by researchers at the Kew Gardens and the New York Botanical Garden. Seasonal shifts in resource use have been documented in longitudinal studies funded by the Gates Foundation and regional universities including the National University of Colombia. Foraging behavior influences seed dispersal and predation dynamics explored in collaborative publications with the Ecological Society of America and modeling work published through the European Commission's biodiversity programs.
Reproductive parameters—litter size, gestation length, and maturation—are reported in mammalogy surveys archived by the British Mammal Society and demographic analyses conducted by the Pan American Health Organization incorporating field data from long-term plots run by the Tropical Ecology Assessment and Monitoring Network. Parental care patterns and juvenile development have been described in theses defended at institutions such as the National Autonomous University of Mexico and the Federal University of Rio de Janeiro, contributing to life-history trait databases maintained by the Global Biodiversity Information Facility.
Listed as Least Concern on the IUCN Red List for much of its range, local declines have been reported due to overhunting, habitat conversion for agriculture, and floodplain alteration linked to projects funded or regulated by agencies such as the World Bank and national ministries in Brazil and Peru. Zoonotic surveillance integrating findings from the World Health Organization and university medical centers has examined disease transmission risks in human-wildlife interfaces promoted by urban expansion studied by the Inter-American Development Bank. Conservation actions promoted by BirdLife International partners, community-based management programs supported by USAID, and protected-area designations under national governments in Costa Rica and Panama aim to mitigate threats.
Category:Mammals of Central America Category:Mammals of South America