Mojave fringe-toed lizard

Mojave fringe-toed lizard
Name	Mojave fringe-toed lizard
Genus	Uma
Species	Uma scoparia
Authority	Wiegmann, 1852

Mojave fringe-toed lizard is a sand-adapted phrynosomatid native to the Mojave Desert in the southwestern United States. It occupies specialized aeolian habitats and has been the subject of conservation, ecological, and physiological studies involving institutions such as the United States Fish and Wildlife Service, National Park Service, and university research programs at University of California, Riverside and University of Arizona. The species' ecology intersects with land management, infrastructure, and climate issues addressed by agencies like the Bureau of Land Management and policy debates in state legislatures.

Taxonomy and etymology

Described by Arend Wiegmann in 1852, the species is placed in the genus Uma within the family Phrynosomatidae, a clade studied by systematists from institutions including the Smithsonian Institution and the American Museum of Natural History. Taxonomic treatments reference molecular phylogenetics from labs at Harvard University, Yale University, and the University of California, Berkeley. Etymological discussion appears in historic catalogues associated with the Smithsonian Institution Archives and publications by the Linnean Society of London. Nomenclatural issues have been considered at conferences of the Society for the Study of Amphibians and Reptiles and in journals such as the Herpetological Review and Copeia.

Description

The lizard exhibits morphological adaptations noted in field guides from the California Department of Fish and Wildlife and monographs by researchers at the San Diego Natural History Museum and the Los Angeles County Museum of Natural History. Diagnostic characters include fringe-like scales on the hind toes, a dorsolateral coloration that affords camouflage comparable to descriptions in the Field Museum of Natural History collections, and body proportions documented in measurements used by the American Society of Ichthyologists and Herpetologists. Comparative morphology with congeners has been published by teams at the University of Kansas Biodiversity Institute and the Museum of Vertebrate Zoology at UC Berkeley.

Distribution and habitat

Range and habitat analyses reference cartography from the United States Geological Survey and regional biodiversity assessments by the California Native Plant Society and the Desert Research Institute. Occurring predominantly on aeolian sand deposits in the Mojave Desert National Preserve, its distribution has been mapped in studies involving researchers affiliated with Scripps Institution of Oceanography and the Desert Tortoise Conservation Center. Habitat dynamics are influenced by land uses overseen by the Bureau of Land Management and conservation easements coordinated with the Nature Conservancy and state parks such as Mojave National Preserve. Historical range shifts have been examined in the context of regional climate records held by the National Oceanic and Atmospheric Administration and paleoclimate work at the University of Arizona.

Behavior and ecology

Behavioral ecology has been studied in field projects associated with University of California, Los Angeles and the University of Nevada, Reno, with methodologies drawn from behavioral ecology syntheses published by the Ecological Society of America. Thermoregulatory behavior relates to microhabitat selection studied alongside researchers at the Scripps Institution of Oceanography and referenced in work by the American Physiological Society. Predator–prey interactions include threats from raptors monitored by the Audubon Society and nocturnal predators surveyed by the California Department of Fish and Wildlife. Interactions with invasive plants and alteration of dune structure have been examined in studies conducted by the United States Forest Service and the Botanical Research Institute of Texas.

Diet and foraging

Dietary studies appear in journals used by researchers from the University of California, Riverside and the Smithsonian Institution, documenting insectivory with prey taxa identified using keys from the Entomological Society of America and collections at the Natural History Museum, London. Foraging modes and energy budgets have been modeled using frameworks taught at the Massachusetts Institute of Technology and data analyzed with statistical approaches from the Royal Statistical Society. Seasonal shifts in prey composition have been correlated with arthropod surveys by the California Academy of Sciences and agricultural entomology data from the United States Department of Agriculture.

Reproduction and life cycle

Reproductive ecology has been detailed in theses defended at Arizona State University and in peer-reviewed work involving collaborators at the University of California, Santa Cruz. Clutch size, incubation, and juvenile growth rates are topics in comparative life-history studies published by the Society for the Study of Amphibians and Reptiles and incorporated into management plans by the United States Fish and Wildlife Service. Demographic modeling for population viability analyses has been implemented using platforms and expertise from the IUCN SSC and quantitative ecologists at the National Center for Ecological Analysis and Synthesis.

Conservation status and threats

Conservation assessments have engaged agencies including the United States Fish and Wildlife Service, the California Department of Fish and Wildlife, and non-governmental organizations such as the Nature Conservancy and Defenders of Wildlife. Threats include habitat fragmentation from infrastructure projects reviewed by the Federal Highway Administration and military land use by installations associated with the Department of Defense. Climate change impacts are modeled using scenarios developed by the Intergovernmental Panel on Climate Change and regional downscaling by the National Center for Atmospheric Research. Conservation responses include land protection efforts coordinated with the Bureau of Land Management, ecological restoration projects informed by the Conservation Biology Institute, and monitoring programs run by university partners at University of California, Riverside and University of Nevada, Las Vegas.

Category:Uma Category:Fauna of the Mojave Desert