Dietary niche reconstruction of Pliocene and Pleistocene Equidae from the Linxia Basin of northwestern China based on stable isotope analysis

doi:10.1016/j.palaeo.2023.111416

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	Dietary niche reconstruction of Pliocene and Pleistocene Equidae from the Linxia Basin of northwestern China based on stable isotope analysis
	Ma, Jiao 1,2,3; Sun, Boyang 1,2,3; Bocherens, Herve 4,5; Deng, Tao1,2,6
	2023-03-15
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	614 期号:0 页码:13
摘要	In this paper, stable isotope (613C, 618O) analyses of five equid species from the Linxia Basin, northwestern China, were conducted to investigate dietary niche turnover during a critical Pliocene-Pleistocene phase in the evolution of Old World Equidae. In the Early Pliocene Shilidun fauna, Proboscidipparion pater is inferred to have mainly fed on C3 grasses in open grasslands as indicated by their relatively high 613C values (-9.1 & PLUSMN; 0.4%o, five teeth, n = 61), whereas Cremohipparion licenti and Sivalhippus platyodus were possibly mixed feeders inhabiting woodlands and grasslands because of their comparatively low 613C values (-10.8 & PLUSMN; 0.6%o, seven teeth, n = 36; -10.6 & PLUSMN; 0.6%o, nine teeth, n = 35). Inhabiting the same environments, both C. licenti and S. platyodus went extinct, possibly, because climatic changes led to a decline in woodlands resulting in greater competition. In the Early Pleistocene Longdan fauna, Proboscidipparion sinense had higher 613C values (-9.1 & PLUSMN; 0.5%o, four teeth, n = 23) than coexisting Equus eisenmannae (-10.2 & PLUSMN; 0.5%o, eight teeth, n = 57), implying that P. sinense had a stronger grazing preference compared to E. eisenmannae. Ecomorphological analyses (body size, tooth crown height, and enamel surface complexity) reveal that P. pater and P. sinense had dental characteristics consistent with a strong grazing preference. Therefore, P. pater might have been preadapted to open grasslands during the warm and humid Early Pliocene, which helped its descendent P. sinense persist into the Pleistocene. The results of this study reveal distinct dietary niches for these equids for the first time and shed light on some aspects of the evolutionary history of Equidae in East Asia.
关键词	Dietary niche Hipparion Equus Stable isotopes Pliocene -Pleistocene Linxia Basin
DOI	10.1016/j.palaeo.2023.111416
关键词[WOS]	OCCLUSAL ENAMEL COMPLEXITY ; TIBETAN PLATEAU ; OXYGEN ISOTOPES ; TOOTH ENAMEL ; FOSSIL MAMMALS ; ENVIRONMENTAL-CHANGE ; POLLEN RECORD ; ANCIENT DIETS ; LATE MIOCENE ; HORSE EQUUS
收录类别	SCI
语种	英语
资助项目	Key Frontier Science Research Program of the Chinese Academy of Sciences[QYZDY-SSW-DQC002] ; Chinese Academy of Sciences[XDB26000000] ; Chinese Academy of Sciences[XDA20070203] ; National Natural Science Foundation in China[42002005] ; Second Comprehensive Scientific Expedition on the Tibetan Plateau[2019QZKK0705] ; Youth Innovation Promotion Association[2022070] ; National Natural Science Foundation in China[41902001]
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001018910800001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22721
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Ma, Jiao; Deng, Tao
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.Univ Tubingen, Senckenberg Ctr Human Evolut & Palaeoenvironment H, D-72074 Tubingen, Germany 5.Univ Tubingen, Fachbereich Geowissensch, Forschungsbereich Palaobiol, D-72074 Tubingen, Germany 6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jiao,Sun, Boyang,Bocherens, Herve,et al. Dietary niche reconstruction of Pliocene and Pleistocene Equidae from the Linxia Basin of northwestern China based on stable isotope analysis[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2023,614(0):13.
APA	Ma, Jiao,Sun, Boyang,Bocherens, Herve,&Deng, Tao.(2023).Dietary niche reconstruction of Pliocene and Pleistocene Equidae from the Linxia Basin of northwestern China based on stable isotope analysis.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,614(0),13.
MLA	Ma, Jiao,et al."Dietary niche reconstruction of Pliocene and Pleistocene Equidae from the Linxia Basin of northwestern China based on stable isotope analysis".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 614.0(2023):13.

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