Hackethal Svenja, Schulz-Kornas Ellen, Gorb Stanislav N, Krings Wencke
Department of Cariology, Endodontology and Periodontology, Universität Leipzig, Liebigstraße 12, 04103 Leipzig, Germany.
Department of Mammalogy and Paleoanthropology, Leibniz Institute for the Analysis of Biodiversity Change, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany.
Interface Focus. 2024 Apr 12;14(2):20230082. doi: 10.1098/rsfs.2023.0082. eCollection 2024 Apr 15.
Radular teeth have to cope with wear, when interacting with ingesta. In some molluscan taxa, wear-coping mechanisms, related to the incorporation of high contents of iron or silica, have been previously determined. For most species, particularly for those which possess radulae without such incorporations, wear-coping mechanisms are understudied. In the present study, we documented and characterized the wear on radular teeth in the model species (Cephalopoda). By applying a range of methods, the elementary composition and mechanical properties of the teeth were described, to gain insight into mechanisms for coping with abrasion. It was found that the tooth regions that are prone to wear are harder and stiffer. Additionally, the surfaces interacting with the ingesta possessed a thin coating with high contents of silicon, probably reducing abrasion. The here presented data may serve as an example of systematic study of radular wear, in order to understand the relationship between the structure of radular teeth and their properties.
齿舌齿在与食物相互作用时必须应对磨损。在一些软体动物分类群中，先前已确定了与高含量铁或硅的掺入相关的磨损应对机制。对于大多数物种，特别是那些齿舌没有此类掺入物的物种，磨损应对机制的研究还不够充分。在本研究中，我们记录并描述了模式物种（头足纲）齿舌齿的磨损情况。通过应用一系列方法，描述了牙齿的基本组成和力学性能，以深入了解应对磨损的机制。研究发现，容易磨损的牙齿区域更硬更坚固。此外，与食物相互作用的表面有一层富含硅的薄涂层，可能减少了磨损。这里呈现的数据可作为齿舌磨损系统研究的一个例子，以了解齿舌齿的结构与其性能之间的关系。
