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Fully terrestrial species such as the fire salamander have a flatter lens which can focus over a much wider range of distances. [20] To find their prey, salamanders use trichromatic color vision extending into the ultraviolet range, based on three photoreceptor types that are maximally sensitive around 450, 500, and 570 nm. [21]
Inbreeding can be especially harmful as it can cause an increase in the presence of deleterious, or harmful, genes within a population. [52] The detection of introgressed tiger salamander ( A. tigrinum ) DNA in the laboratory axolotl population raises further concerns about the suitability of the captive population as an ark for potential ...
The South China giant salamander (Andrias sligoi), can reach a length of 1.8 m (5.9 ft). [1] The Japanese giant salamander ( Andrias japonicus ) reaches up to 1.44 m (4.7 ft) in length, feeds at night on fish and crustaceans , and has been known to live for more than 50 years in captivity.
Japanese giant salamanders in Tottori Prefecture, Japan, showing notable color variation among individuals within the same population. Andrias japonicus skull. The Japanese giant salamander (Andrias japonicus) is a species of fully aquatic giant salamander endemic to Japan, occurring across the western portion of the main island of Honshu, with smaller populations present on Shikoku and in ...
During the 12-month wait as Hickory Nut Gorge green salamanders are considered for protection, Harlan said the best way for N.C. residents to help is simply to learn, care and take pride in the ...
Despite this deep divergence, they can hybridize among each other, and also with the Japanese giant salamander. [10] One of these clades was identified in 2019 as Andrias sligoi, a species described in 1924 by Edward George Boulenger and later synonymized with A. davidianus, with the study supporting its revival as a distinct taxon.
The mole salamanders (genus Ambystoma) are a group of advanced salamanders endemic to North America. The group has become famous due to the study of the axolotl (A. mexicanum) in research on paedomorphosis, and the tiger salamander (A. tigrinum, A. mavortium) which is often sold as a pet, and is the official amphibian of four US states.
The olm (German: ⓘ) or proteus (Proteus anguinus) is an aquatic salamander which is the only species in the genus Proteus of the family Proteidae [2] and the only exclusively cave-dwelling chordate species found in Europe; the family's other extant genus is Necturus.