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Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All ten extant salamander families are grouped together under the order Urodela from the group Caudata. [2]
The larvae do not begin feeding until their yolk sacs are reabsorbed, at which point they begin to feed on benthic invertebrates by prowling the bottom of the stream. Typical prey items for northern two-lined salamander larvae include chironomid larvae and other dipteran larvae, stonefly larvae, cladocera, and copepods. [4]
Adult lungless salamanders have four limbs, with four toes on the fore limbs, and usually with five on the hind limbs. Within many species, mating and reproduction occur solely on land. Accordingly, many species also lack an aquatic larval stage, a phenomenon known as direct development in which the offspring hatch as fully-formed, miniature ...
Cave salamander larvae are predators, and feed primarily on benthic invertebrates, such as snails, ostracods, copepods, isopods, mayflies, stoneflies, beetles and flies, of which ostracods, snails and fly larvae are the most common dietary item.
The spring salamander (Gyrinophilus porphyriticus) is a species of salamander in the family Plethodontidae (lungless salamanders). It is found in Canada and the United States. The genus, Gyrinophilus, means "tadpole lover" and refers to the long period of time it spends as a gilled larva before maturin
Female hellbenders lay 150–200 eggs over a two- to three-day period; the eggs are 18–20 mm (0.71–0.79 in) in diameter, connected by five to ten cords. As the female lays eggs, the male positions himself alongside or slightly above them, spraying the eggs with sperm while swaying his tail and moving his hind limbs, which disperses the ...
Plethodon is a genus of salamanders in the family Plethodontidae. They are commonly known as woodland salamanders. [2] All members of the genus are endemic to North America (Canada and the United States). [2] They have no aquatic larval stage. In some species, such as the red-backed salamander (Plethodon cinereus). [3] Young hatch in the adult ...
The southern torrent salamanders are small salamanders; mature adults measure 1.5–2.4 inches from snout to vent. On their dorsal sides, they are brown with darker spots. Their ventral sides are more yellow, with the same spots as the dorsal sides. The colors vary by shade; the dorsal sides range from dark olive to dark brown.