Glassman D M
Am J Phys Anthropol. 1983 Jul;61(3):291-8. doi: 10.1002/ajpa.1330610303.
This study examines the relationship between positional behavior and morphology for two closely related South American tamarin species, Saguinus fuscicollis illigeri and Saguinus oedipus oedipus. Although never systematically documented, the two species are suspected of exhibiting highly similar yet subtly different locomotor behaviors with a greater propensity for climbing, springing, and more powerful leaping in S. oedipus. Fourteen measurements reflecting biomechanical structuring were taken from the postcranial skeleton of 28 individuals of each species. The data were reduced to principal component scores and subjected to a multiple analysis of variance to determine the extent of intergroup skeletal variation. Areas of significant skeletal diversity were interpreted functionally. The results suggest that the differences in functional patterning among the two species is consistent with the behavioral hypothesis. It is concluded that subtle changes in positional behavior may be capable of altering skeletal morphology.
本研究考察了两种亲缘关系密切的南美绢毛猴物种——艾氏棕颈绢毛猴（Saguinus fuscicollis illigeri）和普通节尾猴（Saguinus oedipus oedipus）的姿势行为与形态之间的关系。尽管从未有过系统记录，但这两个物种被怀疑表现出高度相似但又略有不同的运动行为，普通节尾猴更倾向于攀爬、弹跳以及更有力的跳跃。从每个物种的28个个体的颅后骨骼上进行了14项反映生物力学结构的测量。数据被简化为主成分得分，并进行多因素方差分析以确定组间骨骼变异的程度。对骨骼显著差异的区域进行了功能解释。结果表明，两个物种之间功能模式的差异与行为假设一致。得出的结论是，姿势行为的细微变化可能会改变骨骼形态。
