Funding for this research was provided by:
National Institute of Food and Agriculture (2014-67015-21602)
Received: 26 December 2016
Accepted: 1 August 2017
First Online: 7 August 2017
: Institutional Animal Care and Use Committee of the United States Department of Agriculture, National Center for Cool and Cold Water Aquaculture (Leetown, WV) specifically reviewed and approved all husbandry practices used in this study (IACUC approval #056).
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.