A developmentally descriptive method for quantifying shape in gastropod shells
| Autor: | Samuel Bengmark, Roger K. Butlin, Torbjörn Lundh, Jenny Larsson, Anja M. Westram |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine growth Biomedical Engineering Biophysics Shell (structure) Bioengineering Snail 010603 evolutionary biology 01 natural sciences Biochemistry Biomaterials 03 medical and health sciences shape variation biology.animal 14. Life underwater Mathematics morphometrics biology 030104 developmental biology snail shells Life Sciences–Mathematics interface Biological system Research Article Biotechnology |
| Zdroj: | Journal of The Royal Society Interface Journal of the Royal Society Interface |
| ISSN: | 1742-5662 1742-5689 |
| Popis: | The growth of snail shells can be described by simple mathematical rules. Variation in a few parameters can explain much of the diversity of shell shapes seen in nature. However, empirical studies of gastropod shell shape variation typically use geometric morphometric approaches, which do not capture this growth pattern. We have developed a way to infer a set of developmentally descriptive shape parameters based on three-dimensional logarithmic helicospiral growth and using landmarks from two-dimensional shell images as input. We demonstrate the utility of this approach, and compare it to the geometric morphometric approach, using a large set of Littorina saxatilis shells in which locally adapted populations differ in shape. Our method can be modified easily to make it applicable to a wide range of shell forms, which would allow for investigations of the similarities and differences between and within many different species of gastropods. |
| Databáze: | OpenAIRE |
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