javelina (Collared peccary)

javelina (Collared peccary)
Name	Collared peccary
Status	LC
Status system	IUCN3.1
Genus	Pecari
Species	tajacu
Authority	(Linnaeus, 1758)

javelina (Collared peccary) The collared peccary is a medium-sized New World ungulate of the family Tayassuidae, notable for its social behavior, omnivorous diet, and wide distribution across the Americas. It occupies a range of ecosystems from arid scrub to tropical forest and interacts with numerous human cultures, conservation programs, and regional management policies. Naturalists, wildlife managers, and indigenous peoples have documented its role in ecosystem processes and local economies.

Taxonomy and Nomenclature

The species was described under the binomial system by Carl Linnaeus in 1758 and is placed in the genus Pecari within the family Tayassuidae. Historical taxonomic treatments referenced specimens collected during expeditions associated with figures like Alexander von Humboldt and were later revised by taxonomists linked to institutions such as the Smithsonian Institution and the American Museum of Natural History. Molecular phylogenetics comparing mitochondrial and nuclear markers have involved laboratories at universities including Harvard University, University of California, Berkeley, and University of Oxford, and have clarified relationships with extinct and extant suid-like taxa catalogued in collections at the Natural History Museum, London. Nomenclatural variation across colonial and indigenous sources includes Spanish and Portuguese vernacular names documented in archives at the Real Jardín Botánico de Madrid and the Museu Nacional/UFRJ.

Description and Anatomy

Adult collared peccaries exhibit a compact, robust body with coarse hair and a distinct lighter collar across the shoulders; morphological descriptions appear in field guides produced by the National Audubon Society and the Royal Society. Average shoulder height and body mass have been recorded in studies from institutions such as the University of Arizona and the University of New Mexico, and osteological comparisons use reference collections from the Field Museum of Natural History and the American Museum of Natural History. Dentition and cranial anatomy are compared to those of Old World pigs in analyses published by researchers affiliated with Cornell University and University College London, and locomotor adaptations are discussed in biomechanics work at the Massachusetts Institute of Technology and the Max Planck Institute for Evolutionary Anthropology.

Distribution and Habitat

The species ranges from the southwestern United States through Mexico, Central America, and much of South America, with occurrence records collated by organizations like the IUCN and national agencies such as the United States Fish and Wildlife Service. Habitat associations span Sonoran Desert scrub near Tucson, Arizona to Atlantic Forest fragments in the vicinity of Rio de Janeiro and cloud forest zones studied by researchers at the Smithsonian Tropical Research Institute. Landscape-level occupancy and corridor models have been applied in regional planning by entities including the Nature Conservancy, World Wildlife Fund, and municipal governments of cities such as Phoenix, Arizona and Guadalajara.

Behavior and Ecology

Collared peccaries are gregarious; social structure, group cohesion, and scent-marking behaviors have been described in field studies conducted by ecologists at University of Arizona, University of Texas at Austin, and researchers collaborating with conservation NGOs like Wildlife Conservation Society. Communication through vocalizations and glandular secretions has been compared to signaling systems studied in primate and carnivore research at Princeton University and University of California, Los Angeles. Predation dynamics include interactions with apex and mesopredators managed by agencies such as the National Park Service and documented in predator-prey studies at sites like Big Bend National Park and Saguaro National Park.

Diet and Foraging

Dietary studies using stomach-content analysis and stable isotope work from laboratories at University of Colorado Boulder and University of Florida show omnivory: roots, fruits, seeds, and invertebrates figure prominently. Foraging impacts on seed dispersal and plant community composition have been evaluated in collaboration with botanical gardens including the New York Botanical Garden and university herbaria at University of California, Davis. Seasonal dietary shifts and competition with livestock are topics addressed in reports by agricultural extension services such as those at Arizona Cooperative Extension and Universidad Nacional Autónoma de México.

Reproduction and Lifespan

Reproductive biology—including estrous cycles, litter size, and parental care—has been reported in captive colonies housed by institutions like the San Diego Zoo and research centers connected to Texas A&M University. Lifespan estimates in the wild and in managed care are informed by long-term monitoring programs run by the Arizona Game and Fish Department and zoological institutions such as the Smithsonian National Zoo. Population modeling and demographic analyses used in management draw on methods developed by researchers at University of Minnesota and Duke University.

Conservation and Human Interactions

Conservation status assessments by the IUCN classify the species as of least concern, yet local populations face pressures from habitat loss, hunting, and road mortality documented by transportation agencies like the Arizona Department of Transportation and wildlife NGOs such as Defenders of Wildlife. Human–wildlife conflict, disease transmission concerns, and cultural values are addressed through outreach programs run by tribal governments, municipal authorities in places like Tucson, Arizona and El Paso, Texas, and international initiatives involving the Convention on Biological Diversity and regional conservation groups. Sustainable management strategies, hunting regulations, and coexistence plans have been developed with stakeholders including state wildlife agencies, indigenous organizations, and conservation charities such as The Nature Conservancy.

Category:Tayassuidae