Nutritional resources as positional information for morphogenesis in the stony coral Stylophora pistillata |
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Authors: | Kücken Michael Rinkevich Baruch Shaish Lee Deutsch Andreas |
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Institution: | a Center for Information Services and High-Performance Computing, Technische Universität Dresden, 01062 Dresden, Germany b Israel Oceanographic and Limnological Research, National Institute of Oceanography, Tel Shikmona, PO Box 8030, Haifa 31080, Israel |
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Abstract: | We are interested in deciphering the mechanisms for morphogenesis in the Red Sea scleractinian coral Stylophora pistillata with the help of mathematical models. Previous mathematical models for coral morphogenesis assume that skeletal growth is proportional to the amount of locally available energetic resources like diffusible nutrients and photosynthetic products. We introduce a new model which includes factors like dissolved nutrients and photosynthates, but these resources do not serve as building blocks for growth but rather provide some kind of positional information for coral morphogenesis. Depending on this positional information side branches are generated, splittings of branches take place and branch growth direction is determined. The model results are supported by quantitative comparisons with experimental data obtained from young coral colonies. |
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Keywords: | Coral morphogenesis Mathematical model |
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