Three-dimensional geometric analysis of felid limb bone allometry.
Three-dimensional geometric analysis of felid limb bone allometry.
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DOI：
10.1371/journal.pone.0004742
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发表时间：
2009
期刊：
影响因子：
3.7
通讯作者：
Shefelbine S
中科院分区：
文献类型：
--
作者：
Doube M;Wiktorowicz-Conroy A;Christiansen P;Hutchinson JR;Shefelbine S
骨异速生长的研究通常使用在每个骨的少数位置进行的简单测量;通常将骨干中段直径或关节表面积与体重或骨长度进行比较。然而，骨骼必须以最小的代价同时履行多种角色，同时满足行为和运动所施加的结构要求，并且不超过其适应和修复能力。我们使用整个骨骼体积从前肢和后肢的猫科动物（猫），调查区域的复杂性骨异速生长。计算机断层扫描（CT）图像（16435切片，116个堆栈）的9肢骨从9个猫科动物物种的13个个体的大小范围从家猫（猫卡图斯）到老虎（虎）。计算每个CT切片的11个几何参数，并沿每个骨的整个长度以5%增量沿着计算缩放指数。计算每个骨体积的三维惯性矩，并测量关节盂、肱骨头和股骨头的球面半径。测定了股骨中段的异速生长、转动惯量和关节半径。异速生长是高度可变的，并与当地的骨功能，关节表面和肌肉附着部位一般表现出更强的正异速生长比中段。检查整个骨骼发现，骨异速生长的强烈影响，骨功能的区域变化，可能是通过对骨骼建模的机械效应。骨的表型可塑性可能是一个优势，在快速进化的分歧，允许开发的全尺寸范围内，一个形态型可以占据。猫科动物显示骨异速生长，而不是姿势的变化，在其大小范围内，不像类似大小的动物。
Studies of bone allometry typically use simple measurements taken in a small number of locations per bone; often the midshaft diameter or joint surface area is compared to body mass or bone length. However, bones must fulfil multiple roles simultaneously with minimum cost to the animal while meeting the structural requirements imposed by behaviour and locomotion, and not exceeding its capacity for adaptation and repair. We use entire bone volumes from the forelimbs and hindlimbs of Felidae (cats) to investigate regional complexities in bone allometry. Computed tomographic (CT) images (16435 slices in 116 stacks) were made of 9 limb bones from each of 13 individuals of 9 feline species ranging in size from domestic cat (Felis catus) to tiger (Panthera tigris). Eleven geometric parameters were calculated for every CT slice and scaling exponents calculated at 5% increments along the entire length of each bone. Three-dimensional moments of inertia were calculated for each bone volume, and spherical radii were measured in the glenoid cavity, humeral head and femoral head. Allometry of the midshaft, moments of inertia and joint radii were determined. Allometry was highly variable and related to local bone function, with joint surfaces and muscle attachment sites generally showing stronger positive allometry than the midshaft. Examining whole bones revealed that bone allometry is strongly affected by regional variations in bone function, presumably through mechanical effects on bone modelling. Bone's phenotypic plasticity may be an advantage during rapid evolutionary divergence by allowing exploitation of the full size range that a morphotype can occupy. Felids show bone allometry rather than postural change across their size range, unlike similar-sized animals.
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影响因子：
1.4
作者：
Firth, EC;Rogers, CW;Jopson, NB
通讯作者：
Jopson, NB
DOI：
10.2106/00004623-197961040-00008
发表时间：
1979-01-01
影响因子：
5.3
作者：
GOODSHIP, AE;LANYON, LE;MCFIE, H
通讯作者：
MCFIE, H
影响因子：
56.9
作者：
BIEWENER, AA
通讯作者：
BIEWENER, AA
影响因子：
4.8
作者：
Franklyn, Melanie;Oakes, Barry;Morgan, David
通讯作者：
Morgan, David
影响因子：
2
作者：
GODFREY, L;SUTHERLAND, M;GOMBERG, N
通讯作者：
GOMBERG, N