caa a22 4500 445391758 CHVBK 20180317143049.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10955-011-0157-3 doi (NATIONALLICENCE)springer-10.1007/s10955-011-0157-3 The More the Merrier? [Elektronische Daten] Entropy and Statistics of Asexual Reproduction in Freshwater Planarians [Sofia Quinodoz, Michael Thomas, Jörn Dunkel, Eva-Maria Schötz] The trade-off between traits in life-history strategies has been widely studied for sexual and parthenogenetic organisms, but relatively little is known about the reproduction strategies of asexual animals. Here, we investigate clonal reproduction in the freshwater planarian Schmidtea mediterranea, an important model organism for regeneration and stem cell research. We find that these flatworms adopt a randomized reproduction strategy that comprises both asymmetric binary fission and fragmentation (generation of multiple offspring during a reproduction cycle). Fragmentation in planarians has primarily been regarded as an abnormal behavior in the past; using a large-scale experimental approach, we now show that about one third of the reproduction events in S. mediterranea are fragmentations, implying that fragmentation is part of their normal reproductive behavior. Our analysis further suggests that certain characteristic aspects of the reproduction statistics can be explained in terms of a maximum relative entropy principle. Springer Science+Business Media, LLC, 2011 Life-history theory nationallicence Planarians nationallicence Asexual reproduction nationallicence Entropy nationallicence Optimization nationallicence Quinodoz Sofia 170 Carl Icahn Laboratory, Lewis-Sigler Institute, Princeton University, 08544, Princeton, NJ, USA aut Thomas Michael 170 Carl Icahn Laboratory, Lewis-Sigler Institute, Princeton University, 08544, Princeton, NJ, USA aut Dunkel Jörn Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK aut Schötz Eva-Maria 170 Carl Icahn Laboratory, Lewis-Sigler Institute, Princeton University, 08544, Princeton, NJ, USA aut Journal of Statistical Physics Springer US; http://www.springer-ny.com 142/6(2011-04-01), 1324-1336 0022-4715 142:6<1324 2011 142 10955 https://doi.org/10.1007/s10955-011-0157-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10955-011-0157-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Quinodoz Sofia 170 Carl Icahn Laboratory, Lewis-Sigler Institute, Princeton University, 08544, Princeton, NJ, USA aut NATIONALLICENCE 700 1- Thomas Michael 170 Carl Icahn Laboratory, Lewis-Sigler Institute, Princeton University, 08544, Princeton, NJ, USA aut NATIONALLICENCE 700 1- Dunkel Jörn Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK aut NATIONALLICENCE 700 1- Schötz Eva-Maria 170 Carl Icahn Laboratory, Lewis-Sigler Institute, Princeton University, 08544, Princeton, NJ, USA aut NATIONALLICENCE 773 0- Journal of Statistical Physics Springer US; http://www.springer-ny.com 142/6(2011-04-01), 1324-1336 0022-4715 142:6<1324 2011 142 10955 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer