Slimy
salamander
Plethodon glutinosus
IDENTIFICATION: A large relative of the redback, ranging in
size between 12.1 -17.2 cm. The record longest is recorded as 20.6cm.
Adults have a black to dark bluish background color sprinkled with large
silver to gold flecks. The belly is slightly lighter than the dorsum.
The tail is rounded in cross section like other plethodon species. As
many as 15-17 costal grooves are apparent. Slimy salamander feels very
sticky, like glue, due to skin secretions from the tail when handled
roughly. Included are 13 genetically distinct species that are difficult
to distinguish in the field.
CONSERVATION BIOLOGY: Two main factors reducing populations of
the slimy salamanders are deforestation and the conversion of hardwoods
to pine monocultures.
BREEDING/LARVAE: Breeding patterns vary depending on geographical
locations. Part of the courtship is regarded as a "foot dance" where
the male raises and lowers his rear limbs, dancing around the female.
After spermatophore deposition and retraction, the couple breaks up.
Courting males will bite other males during their pursuit of the female,
forming a sexual competition between them. Females usually lay their
cluster of eggs suspended from the ceiling of a natural cavity guarding
them carefully before and shortly after hatching.
HABITAT: Usually found beneath logs and stones in woods, in crevices
of shale banks, and along the sides of wooded gullies and ravines. They
inhabit swamp forests, wet pinewoods, and are also known to frequent
caves.
FOOD: The slimy salamander will feed on a variety of prey including
insects (primarily ants and beetles), snails, earthworms, and even smaller
salamanders.
PREDATORS: Some predators include garter snakes , copperheads,
and cave salamanders (E. lucifuga) may feed on the smaller slimy salamanders.
RANGE: The slimy salamander most commonly inhibits eastern deciduous
forests. Its range is from central New York to central Florida and central
Missouri southward to central Texas. Isolations occur in New Hampshire
and in parts of Louisiana, Arkansas, and eastern Texas.
References:
Collins, Joeseph T. and Conant, Roger. A Field Guide to Reptiles
and Amphibians: Eastern and Central North America. Houghton Mifflin
Company: Boston New York, 1998.
Petranka, James W. Salamanders of the United States and Canada.
Smithosian Institution Press: Washington, 1998.
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