Fig. 9From: Trophic specialisation reflected by radular tooth material properties in an “ancient” Lake Tanganyikan gastropod species flockResults of nanoindentation, hardness (GPa) and Young’s modulus (GPa). (left) Comparing all tooth cusps of species feeding on mixed, soft, and solid substrate; (right) comparing all central to all lateral and all marginal tooth cups. Letters are connecting letters from Tukey–Kramer test. N = quantity of tested tooth cuspsBack to article page