金丝猴牙齿与体重间的相关性研究

ANALYSIS OF TOOTH AND BODY SIZE RELATIONSHIP IN RHINOPITHECUS

对金丝猴牙齿与体重间关系的研究结果表明,在雄性中,无论是线性还是面积与颅长之间的相关关系均较雌性的更为紧密。而且,随着体重的增加,雄性牙齿的近中远中长(M/D)也比雌性的增长较快。在上、下颌中,上颌牙齿与颅长的关系表现出更强的相联性。与其他灵长类相比较,金丝猴在取食和咀嚼过程中主要利用颊齿;大的个体具有大的犬齿及一定比例的臼齿面积和齿弓(牙合)面面积;上齿弓(牙合)面面积大于下齿弓(牙合)面面积。也就是说上齿弓提供了比下齿弓更大的咀嚼面积。金丝猴牙齿与体重间的关系位于猴类和人猿类之间,更接近于大猩猩(Gorilla)、疣猴(Colobus)和猕猴。

From the analysis between tooth and body size in Rhino pithecus some aspects were shown, in males there are higher correlation coefficients both in linear or area versus cranial length than in females. On M/D direction, the higher positive allometry, being significantly bigger than females, exist in males. In the maxilla both male and female show stronger correlation with the cranial length than they do in the mandible. The extensive incisal prior to mastication arc not necessary for th foods, and the large body size have relatively larger canine with a proportional molar size and dental arch area. Maxillar dental crown area or dental arch area gives a better estimate of maximus grinding space. In Rhinopithecus the relationship between the dentition and body size is closer to Gorilla, Colobus, and Macaco, then to Pan and Homo.