哺乳动物的最大轮进化并不反映热生物学
Quentin Martinez1,2, Jan Okrouhlík3, Radim Šumbera3
1Institut des Sciences de l'Évolution (ISEM, UMR 5554 CNRS-IRD-UM), Université de Montpellier, Place E. Bataillon - CC 064 - 34095, Montpellier Cedex 5, Montpellier, France. quentinmartinezphoto@gmail.com.
Nature communications
|July 21, 2023
概括
哺乳动物鼻子中的关节骨不反映内热或代谢率. 它的尺寸和复杂性取决于哺乳动物的进化和生态,而不是身体温度的调节.
科学领域:
- 脊椎动物古生物学 脊椎动物古生物学
- 进化生物学 进化生物学
- 哺乳动物解剖学 哺乳动物解剖学
背景情况:
- 内热性,即保持高体温的能力,是哺乳动物的一个关键适应.
- 假设前鼻腔的轮骨对温度调节和水分保护至关重要.
- 马克西尔·图尔比纳尺寸已被提议作为已灭绝的脊椎动物内热和代谢率的指标.
研究的目的:
- 为了研究哺乳动物中突形态和内热之间的关系.
- 为了确定旋旋的表面积是否与基础代谢率或体温相关.
- 探索哺乳动物类型学和生态学上的旋旋结构的变化.
主要方法:
- 利用了来自不同哺乳动物种类的微型计算机断层扫描 (μCT) 衍生出来的旋的综合数据集.
- 分析了旋的相对表面积,形态解剖学和复杂性.
- 与纠正的基底代谢率和体温数据相关联的突状特征.
主要成果:
- 没有发现顶轮相对表面积和纠正的基础代谢率或体温之间的显著相关性.
- 证明了轮骨的存在和发展与内热的起源无关.
- 识别了旋的相对表面积,形态解剖学和哺乳动物族系和物种生态学的复杂性的显著变化.
结论:
- 大旋在热量和水分保护中的作用并不直接反映哺乳动物的内热量或代谢率.
- 大突形态是由哺乳动物的进化历史和生态适应形成的,而不是仅仅由温度调节需求.
- 这项研究挑战了先前的假设,将轮骨发育与内热的演变联系在一起.
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