Functional adaptation of spiriferide brachiopod morphology
Functional adaptation of spiriferide brachiopod morphology
复制标题
绣线菊腕足动物形态的功能适应
DOI：
10.1111/j.1420-9101.2010.02024.x
复制
发表时间：
2010
影响因子：
2.1
通讯作者：
Osamu Kuwazuru
中科院分区：
文献类型：
--
作者：
Yuta Shiino;Osamu Kuwazuru
有人认为，spiriferide的形态已经进化到适应各种环境条件。通过计算流体动力学方法，我们研究了spiriferide的原始形态是如何针对地理条件进行优化的，特别是解决了泥盆纪spiriferbownockeri腕足动物产生被动摄食流的功能化问题。使用四种模型的结果显示，每种模型在螺壳凹陷（即沟）的发育上都不同，更深的沟的功能是产生强烈的螺旋流，以便与壳内的进食器官对齐。在沟槽发育的模型中，只有模拟自然形态的模型才能产生相对缓慢的流动和稳定的流入面积。spiriferides的化石记录显示了沟形和翅形之间的形态平衡。我们得出结论，具有这种形态组合的螺旋体壳进化产生了各种摄食策略，导致多样化。
It has been suggested that spiriferide morphologies have evolved to adapt to a variety of environmental conditions. Through a computational fluid dynamics approach, we examined how the spiriferide original form was optimized for a lotic condition, specifically addressing the functionalization of the Devonian spiriferide brachiopod Paraspirifer bownockeri to generate passive feeding flows. The results using four models, each of which differed in the development of the spiriferide shell depression, i.e. sulcus, showed that a deeper sulcus functions to create strong spiral flows so as to align on the feeding organ inside the shell. Among the sulcus‐developed models, only the mimic of the natural form could generate comparative slow flows with a stable inflow area. The fossil record of spiriferides shows a morphological trade‐off between the development of the sulcus and wing form. We concluded that spiriferide shells with such a morphological combination evolved to produce various feeding strategies, resulting in diversification.