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. 2012 Oct 17;7(10):e47850. doi: 10.1371/journal.pone.0047850

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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A) Size at fractional age for smalltooth sawfish samples collected in south Florida and aged via analysis of vertebrae centra thin sections. Plotted line is a von Bertalanffy growth function (VBGF) fit to the data with the method of least squares. Parameter estimates for the function are 4.48 m for L_∞, 0.219 y⁻¹ for k, and −0.81 years for t₀. B) Comparison of VBGF function estimated in this study with those estimated by Simpfendorfer et al. [11] with length frequency data (ELEFAN seasonal; PROJMAT non-seasonal).