Chunhua YANG,Tingting FU,Xinqiang LAN,et al.Comparative Skin Histology of Frogs Reveals High-elevation Adaptation of the Tibetan Nanorana parkeri[J].Asian Herpetological Research(AHR),2019,10(2):79-85.[doi:10.16373/j.cnki.ahr.180093]
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Comparative Skin Histology of Frogs Reveals High-elevation Adaptation of the Tibetan Nanorana parkeri
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

Issue:
2019 VoI.10 No.2
Page:
79-85
Research Field:
Publishing date:
2019-06-20

Info

Title:
Comparative Skin Histology of Frogs Reveals High-elevation Adaptation of the Tibetan Nanorana parkeri
Author(s):
Chunhua YANG12# Tingting FU13# Xinqiang LAN34 Yun ZHANG4 Lotanna Micah NNEJI1 Robert W. MURPHY15 Yanbo SUN1* and Jing CHE16*
1 State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223 Kunming, China
2 Institute of Physical Science and Information Technology, Anhui University, 230601 Hefei, China
3 Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
4 Key Laboratory of Animal Models and Human Disease Mechanisms, The Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, 650223 Kunming, China
5 Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100 Queen’s Park, Toronto, Ont., M5S 2C6, Canada
6 Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, 650223 Kunming, China
Keywords:
Nanorana parkeri skin structure phenotypic innovation high-elevation adaptation
PACS:
-
DOI:
10.16373/j.cnki.ahr.180093
Abstract:
Adaptations to extreme environmental conditions are intriguing. Animal skin, which directly interacts with external environment, plays diverse and important roles in adaptive evolution. The thin and bare skin of amphibians is sensitive to external environmental conditions and, thus, it facilitates investigations into adaptations for living in extreme environments. Herein, we compare the structures of skin in four anuran species living at elevations ranging from 100 m to 4500 m to assess phenotypic innovations in the skin of Nanorana parkeri, which lives at extremely high elevations. Analyses reveal similar basic skin structures, but N. parkeri differs from the other species by having more epidermal capillaries and granular glands, which correlate highly with responses to hypoxia and/or ultraviolet (UV) radiation. Further intraspecific comparisons from frogs taken at ~4500 m and ~2900 m reveal that all of the changes are fixed. Changes occurring only in the higher elevation population, such as possessing more skin pigments, may represent local adaptations to coldness and/or UV radiation. These results provide a morphological basis for understanding further the molecular adaptations of these frogs.

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Last Update: 2019-06-25