中文题名 / Chinese title: 部分中生代海生爬行动物的体温调节
英文题名 / English title: Regulation of body temperature by some Mesozoic marine reptiles.
作者 / Authors: Bernard A, Lécuyer C, Vincent P, Amiot R, Bardet N, Buffetaut E, Cuny G, Fourel F, Martineau F, Mazin JM, Prieur A.
期刊 / Journal: Science
年份 / Year: 2010
DOI: 10.1126/science.1187443
论文链接 / Article: https://doi.org/10.1126/science.1187443
摘要来源 / Abstract source: https://europepmc.org/article/MED/20538946

英文摘要原文 / Original English abstract
What the body temperature and thermoregulation processes of extinct vertebrates were are central questions for understanding their ecology and evolution. The thermophysiologic status of the great marine reptiles is still unknown, even though some studies have suggested that thermoregulation may have contributed to their exceptional evolutionary success as apex predators of Mesozoic aquatic ecosystems. We tested the thermal status of ichthyosaurs, plesiosaurs, and mosasaurs by comparing the oxygen isotope compositions of their tooth phosphate to those of coexisting fish. Data distribution reveals that these large marine reptiles were able to maintain a constant and high body temperature in oceanic environments ranging from tropical to cold temperate. Their estimated body temperatures, in the range from 35 degrees +/- 2 degrees C to 39 degrees +/- 2 degrees C, suggest high metabolic rates required for predation and fast swimming over large distances offshore.

摘要依据的主要发现 / Findings based on the abstract
研究将鱼龙、蛇颈龙和沧龙牙齿磷酸盐氧同位素与共存鱼类比较，推断这些动物在不同海洋气候中维持相对稳定的高体温。
Tooth-phosphate oxygen isotopes from ichthyosaurs, plesiosaurs and mosasaurs were compared with coexisting fish. The authors inferred relatively constant high body temperatures across varied ocean climates.

摘要依据的结论 / Conclusions based on the abstract
同位素结果支持多类海生爬行动物较高的代谢能力，但属于间接生理推断，并非直接测温。
The isotopic results support elevated metabolic performance in several marine reptile groups; they are indirect physiological estimates, not direct temperature measurements.

可用全文文件 / Available full-text files