Modularity and sense organs in the blind cavefish, Astyanax mexicanus
Modularity and sense organs in the blind cavefish, Astyanax mexicanus
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DOI：
10.1111/j.1525-142x.2006.05078.x
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发表时间：
2006-01-01
影响因子：
2.9
通讯作者：
Hall, BK
中科院分区：
文献类型：
--
作者：
Franz-Odendaal, TA;Hall, BK
墨西哥四（Astyanax mexicanus）有两种变体：有视力的（表面）形式和盲人（洞穴鱼）形式。在洞穴鱼中，一些模块丢失，如眼睛和色素模块，而其他模块则扩展，如味蕾和颅神经肥大模块。我们认为，模块化可以被视为嵌套的方式类似于Bauplane，使模块表达独特的基因，细胞和过程。从进化的角度来看，我们可以得出这样的结论：自然选择可以作用于模块内部的任何一个层次，也可以作用于作为一个整体的所有感觉模块。我们讨论了内部和模块之间的相互作用，从遗传和发育的角度来看，盲洞穴鱼。cavefish代表了模块交互、模块解耦和模块扩展的一个有启发性的例子。
Mexican tetra (Astyanax mexicanus) exist as two morphs: a sighted (surface) form and a blind (cavefish) form. In the cavefish, some modules are lost, such as the eye and pigment modules, whereas others are expanded, such as the taste bud and cranial neuromast modules. We suggest that modularity can be viewed as being nested in a manner similar to Bauplane so that modules express unique sets of genes, cells, and processes. In terms of evolution, we conclude that natural selection can act on any of these hierarchical levels within modules or on all the sensory modules as a whole. We discuss interactions within and between modules with reference to the blind cavefish from both genetic and developmental perspectives. The cavefish represents an illuminating example of module interaction, uncoupling of modules, and module expansion.