MORPHOLOGICAL VARIATION IN FROG PECTORAL GIRDLES - TESTING ALTERNATIVES TO A TRADITIONAL ADAPTIVE EXPLANATION
MORPHOLOGICAL VARIATION IN FROG PECTORAL GIRDLES - TESTING ALTERNATIVES TO A TRADITIONAL ADAPTIVE EXPLANATION
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DOI：
10.1111/j.1558-5646.1984.tb00296.x
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发表时间：
1984-01-01
期刊：
影响因子：
3.3
通讯作者：
EMERSON, SB
中科院分区：
文献类型：
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作者：
EMERSON, SB
青蛙的胸带有两种类型，定义为上喙软骨沿着腹侧中线的融合与重叠状态。这两种类型与蛙类不同的运动行为和生态环境无关。因此，提出了腰带类型之间的功能等效性的假设，并通过体外载荷试验进行了验证。在静态和动态载荷下，发现环带类型之间的变形模式相似，从而支持这一假设。 此外，2其他方面的变化，在青蛙胸肌形态，存在或不存在的锁骨和存在或不存在的上喙角，被迫机械相关的一个特定的腰带类型。
There are 2 types of pectoral girdles in frogs, defined by the fused vs. overlapping condition of the epicoracoid cartilages along the ventral midline. The 2 types show no correlation with different locomotor behaviors or ecology among frogs. Therefore, an hypothesis of functional equivalence between girdle types was proposed and tested by in vitro loading tests. Similar patterns of deformation were found between girdle types under static and dynamic loads, thus supporting the hypothesis. Additionally, 2 other aspects of variation in frog pectoral morphology, presence or absence of clavicles and presence or absence of epicoracoid horns, were forced mechanical correlations of a particular girdle type.