Morphological variation in the weberian apparatus of Cypriniformes
Morphological variation in the weberian apparatus of Cypriniformes
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DOI：
10.1002/jmor.10550
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发表时间：
2007-09-01
影响因子：
1.5
通讯作者：
Hernandez, L. Patricia
中科院分区：
文献类型：
--
作者：
Bird, Nathan C.;Hernandez, L. Patricia
鲤形目（Cypriniformes）（包括小鱼、鲤鱼、泥鳅、食藻鱼、石鳅和吸盘鱼）是硬骨鱼的一个形态多样且令人难以置信的物种。有人认为，许多进化创新，改善听力和进食的关键，在鲤科鱼类的成功中发挥了重要作用。韦伯装置就是这样一种创新，它是一种由脊椎元件和改良的肋骨组成的新型组合，可以中继和放大从气囊到内耳的声压变化。韦伯氏器将鲤形目与其他主要目结合成一个物种极其丰富的鱼类群，耳突鱼。总的来说，奥托佩尼亚鱼类是世界上最大的鱼类群体之一，也是大多数淡水鱼类。在这里，我们提出了一个详细的比较韦伯机构在一些鲤形家庭使用清除和染色标本。我们提供了有关鲤形目内科间和科内形态变异的数据。除了少数但在进化上重要的例外，我们发现韦伯器官的诊断特征表征了每个家族。每一个家庭的Balitoridae，Gyrinocheilidae，Catostomidae的种间变异是轻微的，而鲤科和鳅科内的亚科之间的变化是更为显着。这项比较研究确定了一些不同的形态，其中一些出现高度相关的生态位。例如，栖息在快速移动的沃茨似乎是一个关键因素，在封装的前气囊在一些cobitids，balitorids，和gobionin cyprinids。J. Morphol. 268：739-757，2007. (c)2007 Wiley-Liss，Inc.
Cypriniformes (which includes the minnows, carps, loaches, algae-eaters, stone loaches, and suckers) is a morphologically diverse and incredibly speciose order of teleosts. It has been suggested that a number of evolutionary innovations, key to improved hearing and feeding, have played an important role in cypriniform fishes' success. One such innovation, the Weberian apparatus, is a novel assemblage of vertebral elements and modified ribs that relay and amplify sound pressure changes from the gas bladder to the inner ear. The Weberian apparatus unites Cypriniformes with other major orders into an extremely species-rich group of fishes, the Otophysi. Together, otophysan fishes comprise one of the largest groups of fishes in the world, as well as the majority of freshwater fishes. Here we present a detailed comparison of the Weberian apparatus in a number of cypriniform families using cleared and stained specimens. We present data regarding inter- and intrafamilial morphological variation within Cypriniformes. With few, but evolutionarily important, exceptions we find that diagnostic features of the Weberian apparatus characterize each family. Interspecific variation within each of the families Balitoridae, Gyrinocheilidae, and Catostomidae is only slight, whereas variation among subfamilies within Cyprinidae and Cobitidae is far more significant. This comparative study identifies a number of distinct morphologies, some of which appear highly correlated with ecological niche. For example, inhabiting swift-moving waters appears to be a key factor in the encapsulation of the anterior gas bladder in some cobitids, balitorids, and gobionin cyprinids. J. Morphol. 268:739-757, 2007. (c) 2007 Wiley-Liss, Inc.