December 20, 2012, 06:26 PM
Join Date: March 15, 2010
This sourced from: © International Union for Conservation of Nature and Natural Resources.
Kingdom Phylum Class Order Family
ANIMALIA CHORDATA REPTILIA SQUAMATA VIPERIDAE
Scientific Name: Crotalus atrox
Species Authority: Baird & Girard, 1853
English – Western Diamond-backed Rattlesnake, Western Diamondback Rattlesnake
Assessment Information [top]
Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2007
Assessor/s: Frost, D.R., Hammerson, G.A. & Santos-Barrera, G.
Reviewer/s: Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating Team)
Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Population: This species is represented by a large number of occurrences. Campbell and Lamar (2004) mapped hundreds of collection sites. The adult population size is unknown but certainly exceeds 100,000. This is a common snake in much of its range. Its extent of occurrence, area of occupancy, and number of subpopulations are probably relatively stable; population size is probably declining at less than 10% over 10 years or three generations.
Population Trend: Stable