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首页> 外文期刊>Bulletin of the American Physical Society >APS -APS March Meeting 2017 - Event - Developmental Shape Transition in Cowrie Seashells
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APS -APS March Meeting 2017 - Event - Developmental Shape Transition in Cowrie Seashells

机译：APS -APS 2017年3月会议-活动-Cowrie贝壳的发育形状转变

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Cowries are a family of sea snail -- prevalent off the coast of Africa, in the Indian Ocean, and in the Pacific -- that undergoes a transition from laying shell down in a typical seashell spiral to spiraling inward and thickening the shell en route to maturity. This developmental path involves the formation of teeth-like ridges on the underside of the shell. Here we present modeling work that builds on the physics of wrinkling elastic sheets and mathematical approaches to the form and development of seashells to provide an avenue towards understanding the process underlying this transition. We also present experimental data on the link between geometry of the shell and material coupling of soft-body mantle growth and shell deposition. Our calculations, based on elasticity theory and geometry, link a behavioral change in the lifecycle of the mollusc to this under-studied shape transition. Coupling mechanics to shell repair mechanisms and development provides a physical understanding of the emergent structure of Cowrie shells.
机译：贝壳是一类海蜗牛-在非洲沿海，印度洋和太平洋地区盛行-从一个典型的贝壳螺旋中放下贝壳到向内螺旋不断变厚并在到达目的地的过程中变厚到期。这种发展路径涉及在壳的底侧上形成齿状脊。在这里，我们介绍建立在起皱的弹性片的物理基础上的建模工作以及贝壳形成和发展的数学方法，从而为理解这一转变的过程提供一条途径。我们还提出了关于壳的几何形状与软体地幔生长和壳沉积的物质耦合之间的联系的实验数据。我们基于弹性理论和几何学的计算将软体动物生命周期中的行为变化与研究不足的形状过渡联系在一起。耦合机制与壳修复机制和开发之间的关系提供了对Cowrie壳新兴结构的物理理解。

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