MORPHOLOGICAL INTEGRATION IN THE SADDLE-BACK TAMARIN (SAGUINUS-FUSCICOLLIS) CRANIUM
MORPHOLOGICAL INTEGRATION IN THE SADDLE-BACK TAMARIN (SAGUINUS-FUSCICOLLIS) CRANIUM
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DOI：
10.1086/285728
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发表时间：
1995-01-01
影响因子：
2.9
通讯作者：
CHEVERUD, JM
中科院分区：
文献类型：
--
作者：
CHEVERUD, JM
数量遗传理论预测，功能和发育相关的性状将在形态上整合，并倾向于一起遗传。此外，功能相关性状的共遗传和环境整合可能在促进适应性进化中起重要作用。马背绢毛猴（Saguinus fuscicollis）头盖骨的功能和发育相关特征是表型、遗传和环境综合的假设得到了验证。对来自橡树岭联合大学狨猴研究中心的209只动物进行了39次颅面测量。在对数据进行性别和特定环境影响校正后，使用最大似然方法计算遗传力和表型、遗传和环境相关性。使用Mantel的测试，将相关矩阵与一系列代表形态整合预期模式的理论性状间连接进行比较。颅面性状之间的表型、遗传和环境相关模式与基于颅面性状之间的发育和功能关系所预测的模式相匹配。功能发育整合和相关性的相似性主要是由于颅弓性状和口腔性状之间具有较高的相关性。发育和功能相关性状之间的遗传和环境相关性可能会提高进化变化的速度。
Quantitative genetic theory predicts that functionally and developmentally related characters will be morphologically integrated and tend to be inherited together. Furthermore, coinheritance and environmental integration of functionally related characters may be important in facilitating adaptive evolution. The hypothesis that functionally and developmentally related features of the cranium are phenotypically, genetically, and environmentally integrated in the saddle-back tamarin (Saguinus fuscicollis) cranium is tested. Thirty-nine craniofacial measurements were taken on 209 animals from the Oak Ridge Associated Universities' Marmoset Research Center. Heritabilities and phenotypic, genetic, and environmental correlations were calculated using maximum likelihood methods after the data were corrected for sex and specified environmental effects. The correlation matrices were compared to a series of theoretical intertrait connectivities representing expected patterns of morphological integration using Mantel's test. The patterns of phenotypic, genetic, and environmental correlation among craniofacial traits matched patterns predicted on the basis of developmental and functional relationships among cranial traits. The similarity between functional and developmental integration and correlation was largely due to the relatively high correlations among cranial vault traits and among oral traits. Both genetic and environmental correlation among developmentally and functionally related characters may enhance the rate of evolutionary change.