Redback
salamander Plethodon cinereus
IDENTIFICATION: Size ranges from 6-10 cm. Record
12.7 cm. Both redback and leadback phases included. Both phases are
dark brown to gray and have white and black "salt and pepper" bellies.
The redback phases has broad red to tan to a cream stripe down the middle
of their back. The stripe will narrow as you approach the base of the
tail. The body is long and slender and well rounded on the sides. The
mouth is fairly large, with a small tongue that doesn't fill the floor
of the mouth. 17-20 costal grooves
CONSERVATION BIOLOGY: Highly acidic soils can cause a threat
to the redback salamander. Like other salamander species, the redback
populations are greatly reduced due to deforestation and intense harvesting.
BREEDING/LARVAE: The mating season begins in October and does
not end until December. Courtship involves a tail- straddle walk common
of plethodontids. The male's teeth are used to pierce the skin of the
female or be pulled across it to pass mental gland secretions into the
female's circulatory system. During this period spermatophores are deposited
by the males and recovered by the females. The eggs are deposited in
little clusters on the roof of a cavity chosen for the nest such as
well- rotted logs. Females are very protective of their eggs. The average
incubation time is 6 weeks.
HABITAT: A terrestrial salamander found in wooded or forested
areas. Hides beneath logs, barks, stones, ect…
FOOD: Small invertebrates are the primary food source including
ants, beetles, flies, earthworms, and spiders.
PREDATORS: The redback salamander is eaten by woodland snakes,
birds, and even spiders feed on them.
RANGE: Parts of Canada to northeast Minnesota, south to North
Carolina, covering the majority of the eastern United States.
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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