Effects of diet on cranial morphology and biting ability in musteloid mammals
Effects of diet on cranial morphology and biting ability in musteloid mammals
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饮食对鼬类哺乳动物颅骨形态和咬合能力的影响
DOI：
10.1111/jeb.13385
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发表时间：
2018
影响因子：
2.1
通讯作者：
Mehta, Rita S.
中科院分区：
文献类型：
--
作者：
Law, Chris J.;Duran, Emma;Hung, Nancy;Richards, Ekai;Santillan, Isaac;Mehta, Rita S.
尺寸和形状通常被认为是导致性能变化的重要变量。在进食研究中，头骨的尺寸校正指标经常被用作咬入性能的代理；然而，很少有研究调查了整个头骨形状与物种间的咬合力之间的关系，以及饮食生态如何影响这些变量。在这里，我们使用几何形态计量学和系统发育比较的方法来研究食肉动物分支mustelo总科的颅骨形态和估计咬合力之间的关系。我们发现颅骨大小和估计的咬合力之间有很强的关系，但没有发现颅骨形状和尺寸校正后的估计咬合力之间有显著的关系。形式到功能的多对一映射可以解释这种模式，因为多种进化形状变化而不是单一形状变化可能有助于相对咬能力的增加。我们还发现饮食生态影响颅骨形状的进化，但不影响颅骨大小和尺寸校正咬合力的进化。虽然不同饮食的mustmust类动物在颅骨形状上表现出差异，但它们具有相似的估计咬合力，这表明其他摄食性能指标和潜在的非摄食特征也是颅骨进化的重要贡献者。我们假设，这一群体中物种的轴向和尾向适应性以及有趣的摄食行为也促进了物种之间不同的饮食生态。未来的工作将颅、轴和尾的形态和功能与行为观察结合起来，将进一步揭示饮食生态和其他生态变量的演变。
Size and shape are often considered important variables that lead to variation in performance. In studies of feeding, size‐corrected metrics of the skull are often used as proxies of biting performance; however, few studies have examined the relationship between cranial shape in its entirety and estimated bite force across species and how dietary ecologies may affect these variables differently. Here, we used geometric morphometric and phylogenetic comparative approaches to examine relationships between cranial morphology and estimated bite force in the carnivoran clade Musteloidea. We found a strong relationship between cranial size and estimated bite force but did not find a significant relationship between cranial shape and size‐corrected estimated bite force. Many‐to‐one mapping of form to function may explain this pattern because a variety of evolutionary shape changes rather than a single shape change may have contributed to an increase in relative biting ability. We also found that dietary ecologies influenced cranial shape evolution but did not influence cranial size nor size‐corrected bite force evolution. Although musteloids with different diets exhibit variation in cranial shapes, they have similar estimated bite forces suggesting that other feeding performance metrics and potentially nonfeeding traits are also important contributors to cranial evolution. We postulate that axial and appendicular adaptations and the interesting feeding behaviours reported for species within this group also facilitate different dietary ecologies between species. Future work integrating cranial, axial and appendicular form and function with behavioural observations will reveal further insights into the evolution of dietary ecologies and other ecological variables.
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影响因子：
4.4
作者：
通讯作者：
--
DOI：
10.1111/j.1558-5646.2007.00210.x
发表时间：
2007-11
期刊：
--
影响因子：
--
作者：
R. L. Young;T. Haselkorn;A. Badyaev
通讯作者：
R. L. Young;T. Haselkorn;A. Badyaev
三种鼬科动物（美洲貂、加拿大水貂、EnHydra lutris）的咀嚼形式和功能分析
DOI：
--
发表时间：
1985
期刊：
影响因子：
--
作者：
M. Riley
通讯作者：
M. Riley
南方海獭 (EnHydra lutris nereis) 理论咬合力的个体发育尺度
影响因子：
1.6
作者：
Chris J. Law;Colleen Young;R. Mehta
通讯作者：
R. Mehta
影响因子：
1.7
作者：
Kays, RW
通讯作者：
Kays, RW