Distinctive diet-tissue isotopic discrimination factors derived from the exclusive bamboo-eating giant panda  

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作  者:Han HAN Wei WEI Yonggang NIE Wenliang ZHOU Yibo HU Qi WU Fuwen WEI 

机构地区:[1]Key Laboratory of Animal Ecology and Conservational Biology,Institute of Zoology,Chinese Academy of Sciences,Beijing,China [2]University of Chinese Academy of Sciences,Beijing,China

出  处:《Integrative Zoology》2016年第6期447-456,共10页整合动物学(英文版)

基  金:funded by the National Key Pro­gramme of Research and Development,Ministry of Sci­ence and Technology(Grant No.2016YFC0503200);National Natural Science Foundation of China(Grant No.31530086).

摘  要:Stable isotope analysis is very useful in animal ecology,especially in diet reconstruction and trophic studies.Differences in isotope ratios between consumers and their diet,termed discrimination factors,are essential for studies of stable isotope ecology and are species-specific and tissue-specific.Given the specialized bamboo diet and clear foraging behavior,here,we calculated discrimination factors for carbon and nitrogen isotopes from diet to tissues(tooth enamel,hair keratin and bone collagen)for the giant panda(Ailuropoda melanoleuca),a species derived from meat-eating ancestors.Our results showed that carbon discrimination factor obtained from giant panda tooth enamel(ε^(13)C_(diet-enamel)=10.0‰)and nitrogen discrimination factors from hair keratin(Δ^(15)N_(diet-hair)=2.2‰)and bone collagen(Δ^(15)N_(diet-collagen)=2.3‰)were lower,and carbon discrimination factors from hair ker­atin(Δ^(13)C_(diet-hair)=5.0‰)and bone collagen(Δ13Cdiet-collagen=6.1‰)were higher than those of other mammalian carnivores,omnivores and herbivores.Such distinctive values are likely the result of a low-nutrient and special­ized bamboo diet,carnivore-like digestive system and exceptionally low metabolism in giant pandas.

关 键 词:bone collagen discrimination factor giant panda hair keratin stable isotope 

分 类 号:O57[理学—粒子物理与原子核物理]

 

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