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| Liolaemus | |
|---|---|
| Name | Liolaemus |
| Regnum | Animalia |
| Phylum | Chordate |
| Classis | Reptilia |
| Ordo | Squamata |
| Familia | Iguanidae |
| Genus | Liolaemus |
Liolaemus is a genus of small to medium-sized iguanian lizards native to southern South America. Members of the genus occur across diverse provinces and ecoregions from coastal Peru and Chile to central Argentina and southern Patagonia. Taxonomists, field biologists, and conservationists have studied Liolaemus in contexts linked to institutions such as the Smithsonian Institution, Natural History Museum, London, and universities across Argentina, Chile, and Brazil.
The genus is placed within the family Iguanidae and has been the focus of systematic revisions using morphological and molecular data by researchers associated with the American Museum of Natural History, Museo Argentino de Ciencias Naturales', and the Museo Nacional de Historia Natural (Chile). Historically, classifications referenced type specimens deposited in collections like the British Museum and publications in journals such as Nature and Proceedings of the National Academy of Sciences. Molecular phylogenies have employed markers and analytical frameworks promoted at meetings of the Society for the Study of Evolution and the Society for Molecular Biology and Evolution to resolve relationships among clades.
Liolaemus species exhibit a range of morphologies documented in monographs and field guides from institutions like the Field Museum and the Museo de La Plata. Typical characters used in diagnoses include scale patterns, limb proportions, and coloration described in works by taxonomists linked to the Royal Society and the National Geographic Society. Morphometric datasets have been compared across specimens in collections such as the Smithsonian Institution National Museum of Natural History and the Museo Argentino de Ciencias Naturales Bernardino Rivadavia to differentiate species complexes.
The genus occupies habitats from the Atacama Desert and Andes highlands to temperate forests and Patagonian steppe, with records curated by regional herpetological surveys coordinated by the World Wildlife Fund and national parks like Torres del Paine National Park and Los Glaciares National Park. Elevational ranges span sea level to high Andean puna, and occurrences are reported in provinces such as Jujuy Province, Mendoza Province, and regions including Magallanes Region. Biogeographic analyses have referenced ecoregions delineated by organizations including the International Union for Conservation of Nature.
Field studies published in outlets associated with the Ecological Society of America and the British Ecological Society describe thermoregulatory, foraging, and anti-predator behaviors typical of the genus. Diets often include arthropods documented in surveys linked to the Entomological Society of America and plant material reported in research affiliated with the Botanical Society of America. Predation pressures and interspecific interactions have been examined in ecological contexts similar to those studied in Patagonia and the Puna de Atacama, often involving sympatric taxa recorded in museum collections.
Reproductive modes within the genus include oviparity and viviparity, topics investigated in comparative studies cited at conferences of the Society for Integrative and Comparative Biology and published in journals also read by members of the American Society of Ichthyologists and Herpetologists. Life history parameters such as clutch size, gestation, and age at maturity have been measured in field programs run by universities like the Universidad de Buenos Aires and the Universidad de Chile, and have been compared to patterns in other lizard genera curated by the Natural History Museum, London.
Liolaemus comprises one of the most speciose lizard genera in the Southern Hemisphere; taxonomic treatments have been produced by teams affiliated with the Museum of Comparative Zoology, the Universidad Nacional de La Plata, and the Universidad Nacional del Comahue. Species complexes and groups are recognized in regional checklists and monographs circulated through networks including the International Commission on Zoological Nomenclature and databases maintained by institutions such as the IUCN Red List and major natural history museums. Descriptions of new species often arise from fieldwork collaborations between researchers at the Universidad de Concepción and international partners.
Conservation assessments for Liolaemus species feature in listings by the International Union for Conservation of Nature and are informed by studies from agencies including national ministries such as the Ministerio del Medio Ambiente (Chile) and Argentina’s Administración de Parques Nacionales. Threats encompass habitat loss linked to mining activities in the Atacama Desert, land-use change in agricultural provinces like Neuquén Province, and climate change impacts evaluated in reports by the Intergovernmental Panel on Climate Change. Conservation actions involve protected areas managed by organizations such as CONAF and transboundary initiatives supported by the United Nations Environment Programme.
Category:Lizards