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The red eft (juvenile) stage is a bright orangish-red, with darker red spots outlined in black. An eastern newt can have as many as 21 of these spots. The pattern of these spots differs among the subspecies. An eastern newt's time to get from larva to eft is about three months.
A terrestrial subadult Eastern newt or red eft, Notophthalmus viridescens. Salamanders of the family Salamandridae with aquatic adult stages are called newts. Some newts, including the Eastern newt, have a juvenile terrestrial stage called the eft. The red eft has aposematic coloring to warn predators of its toxic skin.
The regular form eft, now only used for newly metamorphosed specimens, survived alongside newt, especially in composition, the larva being called "water-eft" and the mature form "land-eft" well into the 18th century, but the simplex "eft" as equivalent to "water-eft" has been in use since at least the 17th century. [4]
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The NFL's Thanksgiving table has been cleared, but the rest of the Week 13 schedule can hardly be described as leftovers.. The three games on Thursday didn't produce much memorable football, but ...
Birds selectively avoid to predate all-red or erythristic color P. cinereus because they think that red color is a signal of noxiousness and toxicity. Even if people trained the birds to enhance the avoidance by increasing exposure to red efts (juvenile Notophthalmus viridescens), the frequencies of erythrism is never above 25%. [25]
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The red salamander (Pseudotriton ruber) is a palatable species with a similar coloring to the red eft. Predators that previously fed on it have been shown to avoid it after encountering red efts, an example of Batesian mimicry. [53] Other species exhibit similar mimicry.