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A white-headed dwarf gecko with tail lost due to autotomy. Autotomy (from the Greek auto-, "self-" and tome, "severing", αὐτοτομία) or 'self-amputation', is the behaviour whereby an animal sheds or discards an appendage, [1] usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape.
The ability and degree of regeneration in reptiles differs among the various species (see [111]), but the most notable and well-studied occurrence is tail-regeneration in lizards. [112] [113] [114] In addition to lizards, regeneration has been observed in the tails and maxillary bone of crocodiles and adult neurogenesis has also been noted.
In spring where there is no breeding, ctenophorus caudicinctus has more sodium and potassium in their plasma and lower water influx and efflux. However, in autumn there is an increase in water metabolism. There are higher water influx and efflux but less sodium and potassium in their body. Their total body water is higher in autumn than in spring.
Renesto (2005) argued that Tanystropheus lacked clear adaptations for underwater swimming to the same degree as most other aquatic reptiles. The tail of Tanystropheus was compressed vertically (from top-to-bottom) at the base and thinned towards the tip, so it would not have been useful as a fin for lateral (side-to-side) movement. The long ...
The pieces of tail will continue to move once broken off. Two common beliefs are that the pieces of broken tail can grow into new lizards or rejoin into a new tail. [12] In a 1989 study, 79% of the specimens in the population area had broken tails. [10] It is hard to find a slender glass lizard that has its entire tail.
A serpentine reptile with vestigial limbs. It shows evidence of different osteoderm morphology after tail regeneration. Placosauriops "Placosauriops abderhaldeni" [55] Kuhn, 1940 A type of melanosaurinin Glyptosaurine of dubious assignment, as the type material has not been adequately diagnosed. Boidae: Eoconstrictor: Eoconstrictor fischeri [56]
Chuckwallas are stocky, wide-bodied lizards with flattened midsections and prominent bellies. Their tails are thick, tapering to a blunt tip. [5] Loose folds of skin characterize the neck and sides of their bodies, which are covered in small, coarsely granular scales.
Lumbricus terrestris (Linnaeus, 1758) replacing anterior segments from as far back as 13/14 and 16/17 but tail regeneration was never found. Perionyx excavatus (Perrier, 1872) readily regenerated lost parts of the body, in an anterior direction from as far back as 17/18, and in a posterior direction as far forward as 20/21.