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Tennessee conservationists have now released more than 100 hellbenders as part of a recent program.
The groove is lined with glands, and enhances the salamander's chemoreception which is correlated with a higher degree of olfactory lobe and nasal mucous membrane development in plethodontids. [3] [21] The presence of this specialized structure is likely related to the absence of lungs in these salamanders. Though some lunged salamanders do ...
In the lungless salamanders (family Plethodontidae and the clawed salamanders in the family of Asiatic salamanders), no lungs or gills are present, and gas exchange mostly takes place through the skin, known as cutaneous respiration, supplemented by the tissues lining the mouth. To facilitate this, these salamanders have a dense network of ...
The skin of amphibians is a major site of respiration in all species for which measurements are available. [2] Cutaneous respiration is the sole respiratory mode of lungless salamanders (family Plethodontidae) which lack lungs entirely yet constitute the largest family of salamanders. Cutaneous respiration in frogs and other amphibians may be ...
Amphibians use their skin as a secondary respiratory interface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards , but unlike reptiles and other amniotes , require access to water bodies to breed.
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Amphiuma possess relatively ancestral forms of lungs compared to some of the other groups of salamanders that live terrestrially today. [ 17 ] [ 18 ] Their lungs are long organs, extending over half of the body length, with dense capillary networks and large surface area that suggest the utilization of the entire lung for respiration while the ...
Adult Chinese giant salamanders and maturing Chinese giant salamanders with nonexistent or shrinking gill slits have developed a system for bidirectional flow suction feeding under water. They start by moving to their prey very slowly, then once close enough to them the Chinese giant salamander abruptly gapes its mouth open.