Anaxyrus nelsoni
| Taxonomy | |||||
|---|---|---|---|---|---|
| Scientific Name: | Anaxyrus nelsoni | ||||
| Common name: | Amargosa toad | ||||
| Family: | Bufonidae | Minor Group: | Amphibian | Major Group: | Vertebrate Animal |
| Rank and Status | |||||
|---|---|---|---|---|---|
| Global Rank: | G2 | Endemic: | Yes | NNHP Track Status: | At-Risk List |
| Subnational (State) Rank: | S2 | Sand Dunes: | No | USESA Status: | No Status |
| Native Status: | Native | Wetland: | Yes |
| Other Agency Status | Status | Last Updated | Status Comments |
|---|---|---|---|
| Bureau of Land Management - Nevada | Sensitive | BLM 2011 list | |
| Bureau of Land Management - Nevada | Sensitive | BLM Nevada Sensitive Species List dated 2017-10-01 | |
| State of Nevada Protected | Protected Amphibians NAC 503.075.2 | ||
| Nevada Wildlife Action Plan - 2012 | Species of Conservation Priority | ||
| Nevada Wildlife Action Plan - 2005 | Species of Conservation Priority | ||
| International Union for Conservation of Nature | Endangered | ||
| CCVI Score | Presumed Stable | Conf. VH |
| Distribution (NV Counties) |
|---|
Status: Confident or certain
| Nye |
| Summary Occurrence Data | |
|---|---|
| Occurrence Count: | 14 |
| Total Observed Area (hectares): | Not Available |
| Maximum Known Elevation (m): | Not available |
| Minimum Known Elevation (m): | 983 |
| Links |
|---|
| Anaxyrus nelsoni data at NatureServe |
| Anaxyrus nelsoni photos and data at Encyclopedia of Life |
| Character Abstract | |
|---|---|
| Identification Comments: | |
| Subspecies Comments: | |
| Food Habits: | |
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| Reproduction Comments: | |
| Migration Mobility: | |
| Habitat Comments: | Habitat requirements for breeding and population recruitment include the presence of open, ponded, or flowing water, with riparian vegetative cover in an early-to-intermediate successional stage to form a partial canopy for shade with minimal emergent vegetation at the water's edges. Immature (metamorphs or toadlets) and adult Amargosa toads are dependent upon the areas described above, as well as areas they can use for shelter, including burrows, debris piles, spaces under logs or rocks, and areas of dense vegetation. Adult toads also require adjacent vegetated uplands for nocturnal foraging (USFWS 2010a). |
| Ecology comments: | The breeding season begins in mid-February and may extend into July, during which time adults congregate at breeding sites. Amargosa toad tadpoles require relatively open water that persists long enough for the completion of metamorphosis and development into toadlets, which occur over approximately 30 days. Predation and early desiccation of wetlands needed for breeding may affect success at entire breeding sites. Although Amargosa toads typically live 4 to 5 years, individual toads are known to live up to 17 years based on data from NDOW's population monitoring program (USFWS 2010a). |
| Version Date: |
 sitting on gravel
Photographer: Glenn Clemmer, Nevada Natural Heritage Program
Photo Date: |
 close-up
Photographer: Glenn Clemmer, Nevada Natural Heritage Program
Photo Date: 22 April |
 habitat, Amargosa River
Photographer: Glenn Clemmer, Nevada Natural Heritage Program
Photo Date: |
