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. 2014 Jul 16;9(7):e101649. doi: 10.1371/journal.pone.0101649

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© 2014 Passos 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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(a) Locations of temporary ponds sampled in eastern Uruguay. CR = Cebollatí River; YR = Yaguarón River; TR = Tacuarí River; PS = Parao Stream. Numbers refer to the pond numbers mentioned in the text. (b) Sex ratio (proportion male) from temporary ponds early (dark gray) and late (light gray) in the reproductive season. Numbers above the bars denote sample sizes and asterisks denote p<0.05 according to chi-squared tests. Pond codes refer to locations in map above.