Adams R A
Department of Environmental, Population, and Organismic Biology, University of Colorado, Boulder 80309.
J Morphol. 1992 Dec;214(3):251-60. doi: 10.1002/jmor.1052140302.
This study describes, quantifies, and compares the growth and development of the volant forelimb morphology of Myotis lucifugus with that of the terrestrial forelimb morphology of Rattus norvegicus. In M. lucifugus there is 1) accelerated growth in forearm length after parturition, 2) cessation in growth of the midshaft diameter of the ulna just after the onset of osteogenesis, 3) proximal fusion of the radius and ulna, which results in the radius occupying 97% of the articular surface of the elbow joint in adults, 4) fusion between the cartilaginous distal epiphyses of the radius and ulna which results in formation of a radioulnar bridge that becomes fully ossified in adults, and 5) incomplete ossification of the ulna with a section of the diaphysis becoming ligamentous. None of these events occurs during development in R.norvegicus.
本研究描述、量化并比较了美洲鼠耳蝠飞行前肢形态与褐家鼠陆生前肢形态的生长和发育情况。在美洲鼠耳蝠中，存在以下情况：1）产后前臂长度加速生长；2）成骨开始后不久尺骨中轴直径停止生长；3）桡骨和尺骨近端融合，导致成年个体中桡骨占据肘关节关节面的97%；4）桡骨和尺骨软骨远端骨骺之间融合，形成桡尺桥，该桥在成年个体中完全骨化；5）尺骨不完全骨化，骨干的一部分变为韧带状。这些情况在褐家鼠发育过程中均未出现。
