Swimming and bipedal bottom-running in the pig-nosed turtle Carettochelys insculpta Ramsay, 1886
| Autor: | Kin Huat Low, Cheong-Hoong Diong, John Davenport, Julia L. Davenport |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
030110 physiology
0106 biological sciences 0301 basic medicine Carettochelys insculpta Anatomy Carettochelys Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences law.invention 03 medical and health sciences law Quadrupedalism Turtle (robot) Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Natural History. 50:2097-2105 |
| ISSN: | 1464-5262 0022-2933 |
| DOI: | 10.1080/00222933.2016.1180720 |
| Popis: | The pig-nosed freshwater turtle Carettochelys insculpta Ramsay, 1886 has paddle-shaped foreflippers that resemble those of sea turtles. These turtles exhibit a wide range of swimming capabilities. As well as swimming by the action of synchronized foreflippers alone, they sometimes used alternate hindlimb action at the same time. They could swim by ipsilaterally synchronized action of all four limbs, or by hindlimb action alone (combined with stabilizer/lift function of the foreflippers). The turtles also showed flexibility in bottom-walking. Besides the ipsilaterally synchronized quadrupedal action characteristic of other freshwater turtles, they exhibited a bipedal walking mechanism never previously described. Propelled by alternate action of the hindlimbs, the animals held the head and plastron above the substratum, with the large foreflippers acting to provide anterior lift and stability against roll and yaw. Because both hindlimbs were sometimes off the substratum simultaneously during bipedal... |
| Databáze: | OpenAIRE |
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