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Postnatal ontogenetic size and shape changes in the craniums of plateau pika and woolly hare (Mammalia:Lagomorpha)

Zhi-Gui ZHANG De-Yan GE

Zhi-Gui ZHANG, De-Yan GE. Postnatal ontogenetic size and shape changes in the craniums of plateau pika and woolly hare (Mammalia:Lagomorpha). Zoological Research, 2014, 35(4): 287-293. doi: 10.13918/j.issn.2095-8137.2014.4.287
Citation: Zhi-Gui ZHANG, De-Yan GE. Postnatal ontogenetic size and shape changes in the craniums of plateau pika and woolly hare (Mammalia:Lagomorpha). Zoological Research, 2014, 35(4): 287-293. doi: 10.13918/j.issn.2095-8137.2014.4.287

Postnatal ontogenetic size and shape changes in the craniums of plateau pika and woolly hare (Mammalia:Lagomorpha)

doi: 10.13918/j.issn.2095-8137.2014.4.287
基金项目: This project was partially supported by a grant (Y229YX5105) from the Key Laboratory of the Zoological Systematics and Evolution of the Chinese Academy of Sciences and the National Science Foundation of China (31101629)
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    通讯作者:

    De-Yan GE

Postnatal ontogenetic size and shape changes in the craniums of plateau pika and woolly hare (Mammalia:Lagomorpha)

  • 摘要: In the present study, postnatal ontogenetic size and shape changes in the cranium of two lagomorph species, the plateau pika (Ochotona curzoniae) and woolly hare (Lepus oiostolus), were investigated by geometric morphometrics. The ontogenetic size and shape changes of their cranium exhibited different growth patterns in response to similar environmental pressures on the Qinghai-Tibetan Plateau. The overall size change in the cranium of the plateau pika was slower than that of the woolly hare. The percentage of ontogenetic shape variance explained by size in the woolly hare was greater than that in the plateau pika. The overall shape of the cranium was narrowed in both species, and morphological components in relation to neural maturity showed negative allometry, while those responsible for muscular development showed isometric or positive allometry. The most remarkable shape variations in the plateau pika were associated with food acquisition (temporalis development), though other remarkable shape variations in the incisive and palatal foramen in the ventral view were also observed. The most important shape change in the woolly hare was demonstrated by the elongation of the nasal bones, expansion of the supra-orbital process and shape variation of the neurocranium.
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出版历程
  • 收稿日期:  2013-12-04
  • 修回日期:  2014-04-14
  • 刊出日期:  2014-07-08

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