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. 2010 Jan 6;5(1):e8606. doi: 10.1371/journal.pone.0008606

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Kölliker et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Panel A depicts how survival S is determined by the amount of obtained parental investment (f_o,t) (for different shape parameters k), B how parental fecundity F changes with the amount of provided PI (f_p,t) (for different total resources available for reproduction; parameter m), and C how individual lifetime fitness W changes in relation to PI when f_o = f_p and for different values of k.