![]() ![]() ![]() It showed that some types of teeth can withstand significantly more stress than others. For this purpose snail teeth from existing scientific collections were used. "With the help of scanning electron microscope analyses, we measured the areas of fracture to calculate the physical stress that the structures can withstand," says Gorb. ![]() The forces that caused the teeth to break or the radula to fail were recorded. To do this, the tooth cusps were loaded to failure with a needle tip attached to a force sensor. Alexander Kovalev from the Functional Morphology and Biomechanics working group at the Zoological Institute of Kiel University, she was now able to measure the performance of the teeth in a biomechanical experiment for the first time and describe different functions for different teeth of the radula. Krings already investigated the functioning of the teeth in her dissertation at the Universities of Hamburg and Kiel.Įxperiments demonstrate different tooth functions Wencke Krings, Research Associate at CeNak in Hamburg. That is why the animals form several new rows of teeth per day," explains Dr. This very high, punctual pressure causes the teeth to wear out quickly. "Nevertheless, we found out in a previous experiment that individual tooth tips can act on the food and its substrate with a pressure of up to 4700 bar. Their teeth are softer than the substrate from which they remove their food. Like almost all molluscs, snails use this rasping tongue to grind and process their food. This mouth tool consists of a chitinous band covered with dozens to thousands of tiny teeth in longitudinal and transverse rows. They have adapted to their respective habitat and the different food sources, among other things, by the respective adaptation of their teeth array, so-called radula. There are more than 80,000 snail species worldwide, both on land and in water. The results have been published in the journal Proceedings of the Royal Society Biological Sciences. A research team from the Zoological Institute of Kiel University (CAU) and the Center of Natural History (CeNak) of the University of Hamburg has now been able to biomechanically measure the mechanical performance of the teeth for the first time and derive different functional relations from this. Their special mouthparts help snails adapting to a wide variety of food and habitats. Societal, Environmental and Cultural Change.About building sites and campus development.Associated institutions & supporting societies.Faculty of Business, Economics and Social Sciences.Faculty of Mathematics and Natural Sciences.Faculty of Agricultural and Nutritional Sciences.Kiel University's faculties & joint facilities.Facilities & Faculties of Kiel University.Archive: Campus information by the University Board. ![]()
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