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. 2017 Sep 6;7:10658. doi: 10.1038/s41598-017-11263-4

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Maximum Likelihood tree for NNV RNA2 RNA sequences. Numbers at tree branches indicate the percentage of replicate trees in which the same clusters are found in the bootstrap tests of 1000 replicates. Letters in brackets after years refer to months of the year. (W) refers to wild fish; (Y) to wild yearling fish.