Polydactyly and other limb abnormalities in the Jurassic salamander Chunerpeton from China

Polydactyly and other limb abnormalities in the Jurassic salamander Chunerpeton from China
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中国侏罗纪蝾螈的多指和其他肢体异常

DOI:
10.1007/s12549-015-0219-7
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发表时间:
2016-03
影响因子:
1.4
通讯作者:
Evans Susan E
Evans Susan E
中科院分区:
地球科学3区
文献类型:
--
作者:
Wang Yuan;Dong Liping;Evans Susan E

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多指畸形和其他畸形,如多余的肢体,在现存的蝾螈种群中相对常见。它们通常是由于非致命性捕食者或同种咬伤后正常再生的生物或非生物破坏。在这里,我们第一次在蝾螈化石中记录到类似的畸形。 多指畸形主要发生在轴后,发生在脚上的多于手,发生在身体右侧的多于左侧。额外的腿也发生在身体的右侧。在现存的蝾螈中也可以观察到类似的情况,因此这些标本表明,水生蝾螈所面临的挑战以及相应的发育过程在1.6亿年中变化相对较小。
Polydactyly and other malformations such as supernumerary limbs are relatively common in extant salamander populations. They generally result from biotic or abiotic disruption of normal regeneration following non-lethal predator or conspecific bite injury. Here, we record, for the first time, similar malformations in a fossil salamander. Polydactyly in Chunerpeton is mainly post-axial, occurring on the feet more often than the hands, and on the right side of the body more often than on the left. The extra legs also occurred on the right side of the body. Similar conditions can be observed in living salamanders, so these specimens suggest that the challenges faced by aquatic salamanders, and the developmental processes triggered in response, have changed relatively little in 160 million years.
DOI: --
发表时间: 2003
期刊: --
影响因子: --
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DOI: 10.1100/tsw.2006.324
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