Long Toed Salamander
Long-toed Salamander
Ambystoma macrodactylum
Species at Risk: Sensitive
Description
Alberta
has two native salamander species and both belong to the mole
salamander family. The long-toed salamander is the smaller of the two
and is approximately 80-120mm in length. In Canada there are three
subspecies, and in Alberta we have the eastern subspecies, Ambystoma macrodactylum krausei.
This salamander gets its name from its long, thin, unwebbed digits. The
fourth toe on the hind leg is longest. They have a background
coloration of dark green, grey or black with an attractive yellow
vertebral stripe that can be surrounded by variable amounts of light
colored flecks. There is usually a yellow patch over each eye. The belly
is generally a light grey.
Habitat
The
long-toed salamander lives in alpine and sub-alpine area in western
Alberta. It is primarily nocturnal and generally only found during brief
periods in spring and fall while it is moving to and from its breeding
ponds. These can be lakes, ponds or shallow areas of exposed
groundwater. With substrates of rocky glacial deposit the waters remain
clear and more often than not, very cold. The adults can be found
underneath rocks, rotting logs, and other debris around these wetlands.
Conservation
The
long-toed salamander is doing well in Alberta. It was previously
considered rare, however intensive surveys found many new populations of
this secretive animal. Introduction of stock fish, and wetland drainage
or destruction are threats common to this species elsewhere and may
threaten Alberta populations with increased development along our
western border. Mining and logging are two big Alberta industries that
will impact this species as activities increase in the mountains and
foothills. They increase sedimentation and pollute the clear water
wetlands typical of this area.
References
The Amphibians and Reptiles of Alberta by A.P.Russell and A.M.Bauer
Photo by Matthew Atkinson-Adams
