气候变化领域集成服务门户(CCPortal): Mesowear represents a lifetime signal in sheep (Ovis aries) within a long-term feeding experiment

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DOI	10.1016/j.palaeo.2020.109793
	Mesowear represents a lifetime signal in sheep (Ovis aries) within a long-term feeding experiment
	Ackermans N.L.; Martin L.F.; Codron D.; Hummel J.; Kircher P.R.; Richter H.; Kaiser T.M.; Clauss M.; Hatt J.-M.
发表日期	2020
ISSN	0031-0182
卷号	553
英文摘要	A herbivore's diet can affect its teeth by causing different types of wear. Browsers typically have sharper, higher cusps, while grazers show lower, blunter cusps, presumably due to the more abrasive nature of their diet. On the macroscopic scale, this allows the reconstruction of herbivore diets based on the shape of the tooth's profile, using the mesowear method. However, the timeframe involved in constituting a stable dietary signal represented by mesowear has not been precisely defined. To obtain a more precise delimitation of this timeframe, sheep (Ovis aries, n = 39) were fed pelleted diets containing external abrasives of different sizes (⌀ 4 μm, ⌀ 50 μm, and ⌀ 130 μm), and concentrations (4%, or 8%) for 17 months. Mesowear was scored on the skulls at the end of the experiment, as well as on computer-tomographic scans and on resin casts of the teeth taken at different timepoints along the experiment. These datasets were compared, and changes in score were calculated using the CT and cast data from the beginning and end of the experiment. Overall, even though a visual trend appeared of more wear on higher abrasion diets, it was of an extremely small magnitude, and the dietary effect on the mesowear scores or the change of the mesowear scores in these animals was never significant. This leads us to conclude that, at least in small ruminants, mesowear is more of a general signal than a seasonal one, and needs to be considered as such for tooth wear-based palaeodietary reconstructions. Experiments with natural forages are required to corroborate this conclusion. © 2020
英文关键词	Abrasives; Dietary signal; Palaeodiet; Ruminant; Tooth wear
语种	英语
scopus关键词	concentration (composition); diet; experimental study; reconstruction; sheep; tooth; Animalia; Ovis aries
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150458
作者单位	Clinic for Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty, University of Zurich, Zurich, CH-8057, Switzerland; Department of Zoology and Entomology, University of the Free State, PO Box 339, Bloemfontein, 9300, South Africa; Department of Animal Sciences, Ruminant Nutrition, Georg-August University, Göttingen, 37073, Germany; Division of Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland; Center of Natural History, University of Hamburg, Hamburg, Germany
推荐引用方式 GB/T 7714	Ackermans N.L.,Martin L.F.,Codron D.,et al. Mesowear represents a lifetime signal in sheep (Ovis aries) within a long-term feeding experiment[J],2020,553.
APA	Ackermans N.L..,Martin L.F..,Codron D..,Hummel J..,Kircher P.R..,...&Hatt J.-M..(2020).Mesowear represents a lifetime signal in sheep (Ovis aries) within a long-term feeding experiment.Palaeogeography, Palaeoclimatology, Palaeoecology,553.
MLA	Ackermans N.L.,et al."Mesowear represents a lifetime signal in sheep (Ovis aries) within a long-term feeding experiment".Palaeogeography, Palaeoclimatology, Palaeoecology 553(2020).