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. 2015 Jun 26;10(6):e0131516. doi: 10.1371/journal.pone.0131516

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© 2015 Troyer, Turner

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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Fig 1 — Tadpoles were housed in water drawn from three sources. Activity was scored as mean proportion of individuals that moved during 20-second observation bouts. Response to predator cues depended on water source. Bars represent one standard error, N = 16 replicates per treatment combination.