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The eastern newt (Notophthalmus viridescens) is a common newt of eastern North America.It frequents small lakes, ponds, and streams or nearby wet forests. The eastern newt produces tetrodotoxin, which makes the species unpalatable to predatory fish and crayfish. [3]
The Pacific newts (Taricha) and the Eastern newts (Notophthalmus) with together seven species are the only representatives in North America, while most diversity is found in the Old World: In Europe and the Middle East, the group's likely origin, eight genera with roughly 30 species are found, with the ribbed newts (Pleurodeles) extending to ...
The Cheat Mountain salamander (Plethodon nettingi) The hellbender (Cryptobranchus alleganiensis) An adult red-spotted, or eastern, newt (Notophthalmus viridescens) The northern dusky salamander (Desmognathus fuscus) with egg clutch The eastern American toad (Bufo americanus) The spring peeper (Pseudacris crucifer) The gray tree frog (Hyla versicolor) A female American bullfrog (Rana ...
Predation on newts by T. sirtalis also shows evidence that tetrodotoxin may serve as protection of eggs by the mother. While TTX is mainly located in the glands of the skin, the rough-skinned newt, as well as some other amphibians also possesses TTX in the ovaries and eggs.
Occurs throughout eastern Texas and as far south as the Rio Grande Valley [36] LC [37] Hyla squirella: Squirrel tree frog: Found in eastern Texas [38] LC [39] Dryophytes versicolor: Gray tree frog: Found in the eastern-central portion of the state, excluding the most eastern fifth [40] LC [41] Pseudacris clarkii: Spotted chorus frog: Found in ...
Salamander diversity is highest in eastern North America, especially in the Appalachian Mountains; most species are found in the Holarctic realm, with some species present in the Neotropical realm. Salamanders never have more than four toes on their front legs and five on their rear legs, [ 3 ] but some species have fewer digits and others lack ...
Before the eggs are deposited, male mudpuppies leave the nest. [6] Once ready, the female deposits the eggs in a safe location, usually on the underside of a rock or log. [7] They can lay from 20 to 200 eggs, [4] usually an average of 60. [6] The eggs are not pigmented and are about 5–6 mm (0.20–0.24 in) mm in diameter.
The coloration of the red salamander has been hypothesized to mimic that of the red eft stage of the eastern newt (Notophythalmus viridescens) which emits a powerful neurotoxin in their skin. [29] This phenomenon is known as the Mullerian Mimicry Complex. [ 30 ]