Walking like caterpillars, flying like bats—pinniped locomotion
Walking like caterpillars, flying like bats—pinniped locomotion
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像毛毛虫一样行走，像蝙蝠一样飞行——鳍足类动物的运动
DOI：
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发表时间：
2012
影响因子：
1.4
通讯作者：
E. Frey
中科院分区：
文献类型：
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作者：
C. Kuhn;E. Frey
在羽足动物科之间，特别是在海龙亚科和海龙亚科之间，肢体的利用以及在陆地和水中的运动方式基本上是不同的。在陆地上，与所有陆生哺乳动物一样，后者的成员能够用四肢支撑自己的身体，这与海豚亚族形成了鲜明对比。在水中，Pocinae通过其后鳍的侧向波动来产生推力，而Otaiidae则用其前鳍进行水下飞行。在这里，我们讨论和比较了这两类羽足食肉动物的运动方式和相关的解剖学特征。提出了游泳风格演变的比较模型。根据这些模型，Pocinae和Otaidae的特定水生运动方式分别在水生生物的不同阶段相互独立地进化，因此不可能起源于直系共同祖先。这与遗传数据和最近的系统发育分析相矛盾，这强烈地表明了Otaidae和Pocinae的双重分类。
Utilisation of the limbs and the kind of locomotion on land and in water differ fundamentally between pinniped families, especially between Phocinae and Otariidae. On land, members of the latter group are, as is the case in all terrestrial mammals, able to support their bodies with their limbs, in contrast to the Phocinae. In water, Phocinae produce thrust by a lateral undulation of their hind fins whereas Otariidae perform underwater flight with their forefins. Here, we discuss and compare the locomotion styles and allied anatomical features of these two groups of pinniped Carnivora. Comparative models are presented for the evolution of swimming styles. According to these models, the specific aquatic locomotion styles of Phocinae and Otariidae, respectively, evolved at different stages of aquaticism independently from each other and thus cannot stem from an immediate common ancestor. This strongly suggests a diphyly of Otariidae and Phocinae contradicting both genetic data and recent phylogenetic analyses.
影响因子：
56.9
作者：
BIEWENER, AA
通讯作者：
BIEWENER, AA