Head to head
Southern Dusky Salamander vs Allegheny Mountain Dusky Salamander
A southern dusky salamander and an Allegheny Mountain dusky salamander are both members of the same genus of stream-associated salamanders, yet their fortunes could hardly be more different, one collapsing across the majority of its range and the other comfortably expanding into drier, higher terrain.
| Southern Dusky Salamander | Allegheny Mountain Dusky Salamander | |
|---|---|---|
| Scientific name | Desmognathus auriculatus | Desmognathus ochrophaeus |
| Population trend | Collapsed across most of its range | Widespread and stable |
| Habitat | Swamps, seepages, floodplain forest | Forest, including well away from streams |
| Range | Southeastern coastal plain | Appalachian Mountains |
| Elevation tolerance | Typical lowland wetland | Notably high elevations |
| Aquatic larval stage | Present, typical duration | Comparatively brief |
| Cause of concern | Only partly understood decline | None significant |
| Conservation status | Endangered | Least Concern |
Southern Dusky Salamander vs Allegheny Mountain Dusky Salamander: common questions
Why has the southern dusky salamander declined so much more than the Allegheny Mountain dusky salamander?
The southern dusky salamander has disappeared from the vast majority of its historical range for reasons only partly understood, possibly involving introduced predatory fish among other factors, while the Allegheny Mountain dusky salamander has faced no comparable pressure and remains widespread and common across its Appalachian range.
Why can the Allegheny Mountain dusky salamander live farther from water than the southern dusky salamander?
The Allegheny Mountain dusky salamander has a comparatively brief aquatic larval stage, reducing its dependence on nearby permanent water and letting it tolerate damp forest litter well away from streams, while the southern dusky salamander remains more closely tied to swamps, seepages, and floodplain habitat throughout its life.
Do these two salamanders live in the same part of the country?
Not really — the southern dusky salamander is native to the southeastern coastal plain, while the Allegheny Mountain dusky salamander is found across the Appalachian Mountains, meaning the two occupy largely separate regions despite belonging to the same genus.