ALLOMETRIC SCALING IN THE DENTITION OF PRIMATES AND PREDICTION OF BODY-WEIGHT FROM TOOTH SIZE IN FOSSILS
ALLOMETRIC SCALING IN THE DENTITION OF PRIMATES AND PREDICTION OF BODY-WEIGHT FROM TOOTH SIZE IN FOSSILS
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DOI：
10.1002/ajpa.1330580110
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发表时间：
1982-01-01
影响因子：
2.8
通讯作者：
ROSENBERG, K
中科院分区：
文献类型：
--
作者：
GINGERICH, PD;SMITH, BH;ROSENBERG, K
灵长类动物的牙齿大小与体重呈指数关系。牙冠面积和体重的对数变换得到斜率0.67的线性模型，作为研究牙齿异速生长的等距(几何)基线。将该模型与代谢标度法(斜率=0.75)预测的结果进行了比较。与一般灵长类动物相比，塔尔修斯和其他食虫动物的牙齿比一般灵长类动物的牙齿更大，它们不包括在这项分析中。在一般灵长类动物中，牙齿大小与身体大小高度相关。根据牙齿位置的不同，上、下颊齿与体型的相关系数在0.90-0.97之间。中部的面颊牙齿。**图形**。和.**图形**。异速生长系数在0.57-0.65之间，远远低于几何比例。前颊和后颊的牙齿比例达到或高于代谢比例。无论是单独考虑还是作为一个组考虑，上颊牙的比例都是异位的，其系数比相应的下颊牙低；门牙的情况正好相反。所有上颊牙齿的牙冠面积总和明显低于几何比例；所有下颊牙齿的牙冠面积总和接近几何比例。牙齿大小可以用来预测广义灵长类化石的体重。Aegyptopithecus和其他始新世、渐新世和中新世灵长类动物的情况就是如此。基于一般灵长类动物牙齿大小的回归得出了合理的体重估计，但在更受限的系统群体和饮食行会中，关于牙齿大小和身体大小比例的研究仍有许多需要了解。
Tooth size varies exponentially with body weight in primates. Logarithmic transformation of tooth crown area and body weight yields a linear model of slope 0.67 as an isometric (geometric) baseline for study of dental allometry. This model is compared with that predicted by metabolic scaling (slope = 0.75). Tarsius and other insectivores have larger teeth for their body size than generalized primates do, and they are not included in this analysis. Among generalized primates, tooth size is highly correlated with body size. Correlations of upper and lower cheek teeth with body size range from 0.90-0.97, depending on tooth position. Central cheek teeth .**GRAPHIC**. and .**GRAPHIC**. have allometric coefficients ranging from 0.57-0.65, falling well below geometric scaling. Anterior and posterior cheek teeth scale at or above metabolic scaling. Considered individually or as a group, upper cheeck teeth scale allometrically with lower coefficients than corresponding lower cheek teeth; the reverse is true for incisors. The sum of crown areas for all upper cheek teeth scales significantly below geometric scaling; the sum of crown areas for all lower cheek teeth approximates geometric scaling. Tooth size can be used to predict the body weight of generalized fossil primates. This is illustrated for Aegyptopithecus and other Eocene, Oligocene and Miocene primates. Regressions based on tooth size in generalized primates yield reasonable estimates of body weight, but much remains to be learned about tooth size and body size scaling in more restricted systematic groups and dietary guilds.