在新热带地区的鹿中,产后本体发生过程中的断层维度和合复杂性,与性变态和其他生物特征相关
Nuria S Di Guida1,2, Guillermo H Cassini1,2,3
1División Mastozoología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Ciudad Autónoma de Buenos Aires, Argentina.
概括
部接的复杂性随着年龄的增长而增加,雄鹿的接比雌性更复杂. 这种复杂性,特别是在有较大角的物种中,有助于消除头骨上的机械应力.
科学领域:
- 古生物学的古生物学
- 哺乳动物解剖学 哺乳动物解剖学
- 生物力学 生物力学
背景情况:
- 哺乳动物的头骨复杂性与机械头骨负荷有关,例如和头骨附属物.
- 接间接增强了机械应力吸收.
- 鹿表现出独特的两性二态性质,其角只存在于雄性,新热带地区的物种表现出不同的形态和生态.
研究的目的:
- 调查部接复杂性与新热带地区鹿的角形诱导的机械应力之间的关系.
- 在六种新热带地区的鹿种中,使用碎形维度 (D) 来量化线复杂性.
主要方法:
- 碎形维度 (D) 用于量化六种新热带地区鹿的额间和冠状的复杂性.
- 第一个上牙的口牙区域 (OTA) 作为年龄的代理来分析合复杂性的本体遗传变化.
- 评估了合复杂性的性二态.
主要成果:
- 在所有研究的鹿物种中,复杂度 (D) 与年龄 (OTA) 增加.
- 具有显著的体型性二态和多角的物种表现出更复杂的 sutures.
- 成年雄性通常比雌性表现出更大的间合,而不管在日常生活中发生了什么种类内战.
结论:
- 这项研究是首次报告与鹿角相关的头骨合复杂性的性二态.
- 这些发现表明,额间和冠状在消除角的机械应力方面发挥着作用.
- 部的复杂性受到Neotropical鹿的角形存在和性二态的影响.
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