Segments and parasegments in Arthropods: a functional perspective
Segments and parasegments in Arthropods: a functional perspective
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DOI：
10.1002/bies.20111
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发表时间：
2004-10-01
期刊：
影响因子：
4
通讯作者：
Deutsch, JS
中科院分区：
文献类型：
--
作者：
Deutsch, JS
我回顾了如何使用旁节段框架和节段框架来构建节肢动物的身体计划。如 Hox 基因表达所示，副节段是主要的遗传单位，并且神经索中保留了副节段设计。然而，它并没有维持在表皮中，其中角质层凹槽是分段的，并且在肌肉组织中，其组织是分段的。这种框架转移反映在神经节和外周之间的感觉和运动神经连接中。我认为，配备硬外骨骼的生物体对运动的需求是形成这种明显复杂的发育模式的功能限制。 (C) 2004 年 Wiley 期刊公司。
I review how both the parasegmental and segmental frames are used in constructing the body plan of the arthropods. The parasegment is the primary genetic unit, as shown by Hox gene expression, and the parasegmental design is maintained in the nerve cord. It is, however, not maintained in the epidermis, where the cuticle grooves are segmental, and in the musculature, which is segmental in organisation. This frame shift is reflected in the sensory and motor nerve connections between the ganglia and the periphery. I suggest that the need for movement in an organism equipped with a hard exoskeleton was the functional constraint that shaped this apparently complex mode of development. (C) 2004 Wiley Periodicals, Inc.