Sceloporus arenicolus

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Sceloporus arenicolus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Iguania
Family: Phrynosomatidae
Genus: Sceloporus
Species:
S. arenicolus
Binomial name
Sceloporus arenicolus
Degenhardt & Jones, 1972 [2]
Synonyms [2]

Sceloporus graciosus arenicolusDegenhardt & Jones, 1972 [3]

Contents

Sceloporus arenicolus, the dunes sagebrush lizard, formerly known as the sand dune lizard and the dunes-sagebrush lizard, Sceloporus graciosus arenicolus, a subspecies of sagebrush lizard), is an insectivorous spiny lizard species which only occurs in the shinnery oak sand dune systems of extreme southeast New Mexico and only four counties in adjacent Texas. Sceloporus arenicolus has the second-smallest range of all lizards in the United States. [4]

Habitat

Their habitat is restricted to semi-stabilized sand dunes which include large networks of shinnery oak ( Quercus havardii ), short (<2 m) shrubs, and sand sagebrush ( Artemisia filifolia ) on sloping, sandy topography, where the lizards use "blowouts" as their primary microhabitat. [5] Blowouts are sandy, bowl-shaped interruptions in the shinnery oak sand dune system which look like small meteor craters. The roots of the shinnery oak shrubs provide structure for the dunes sagebrush lizards' burrows, where the lizards retreat from the blowouts when the sand surface is too hot or cold.

Threats

Habitat destruction is their primary threat. Shinnery oak through much of the lizard's range was sprayed with herbicide to clear the land for cattle grazing, and the lizards are now extinct at these locations. The dune systems are also heavily interrupted by oil industry activities. These interruptions allow Mesquite to invade areas where shinnery oak (and dunes sagebrush lizards) were once dominant. While herbicide spraying has been outlawed in the dunes sagebrush lizard's New Mexico distribution, development for the oil industry has not ceased.

Competition from other lizard species may be a threat, as well. Uta stansburiana , the side-blotched lizard, seems to be more of a habitat generalist than the dunes sagebrush lizard, and may be able to take advantage of recent habitat changes, introducing skewed resource competition that is not natural for that ecosystem.

The United States Fish and Wildlife Service proposed listing the dunes sagebrush lizard as endangered under the Endangered Species Act throughout its range in New Mexico and Texas. The final determination was originally due in July 2011, but was delayed to allow the scientific community to continue research to see if the listing was necessary. [4] [6] [7] In June 2012 the Fish and Wildlife Service decided not to list it, citing the "unprecedented commitments to voluntary conservation agreements now in place in New Mexico and Texas" that provide for the long-term conservation of the species. [8]

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<i>Artemisia filifolia</i> Species of flowering plant

Artemisia filifolia, known by common names including sand sagebrush, sand sage and sandhill sage, is a species of flowering plant in the aster family. It is native to North America, where it occurs from Nevada east to South Dakota and from there south to Arizona, Chihuahua, and Texas.

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References

  1. Hammerson, G.A. (2007). "Sceloporus arenicolus". IUCN Red List of Threatened Species . 2007: e.T64087A12735779. doi: 10.2305/IUCN.UK.2007.RLTS.T64087A12735779.en . Retrieved 12 November 2021.
  2. 1 2 Sceloporus arenicolus at the Reptarium.cz Reptile Database
  3. Degenhardt, William G.; Jones, Kirkland L. (1 January 1972). "A new sagebrush lizard, Sceloporus graciosus, from New Mexico and Texas". Herpetologica. 28 (3): 212–217. JSTOR   3890623.
  4. 1 2 "Proposed Rule to List the Dunes Sagebrush Lizard (Sceloporus arenicolus) as Endangered Throughout its Range" Fish and Wildlife Service
  5. Degenhardt, W. G., Painter, C. W., & Price, A. H. (2005). Amphibians and reptiles of New Mexico. UNM Press.
  6. Dexheimer, Eric (March 2, 2016). "Appeals court upholds Texas' controversial plan to protect dune lizard". American-Statesman . Retrieved 10 March 2016.
  7. McEwen, Mella (March 3, 2016). "Blue ribbon panel seeks $1.3 billion for wildlife conservation". Midland Reporter-Telegram . Retrieved 10 March 2016.
  8. "Dunes Sagebrush Lizard". U.S. Fish and Wildlife Service. June 2012. Retrieved 13 December 2016.