Acknowledgements
We thank the New Mexico Department of Game and Fish for funding
contemporary tissue collection and stable isotope analysis. The U.S.
Fish and Wildlife Service funded historical tissue collection and stable
isotope analyses. This work would not have been possible without
specimen curation by the Division of Fishes at the Museum of
Southwestern Biology at the University of New Mexico. We would like to
specifically acknowledge the Curator of Fishes, Dr. Thomas Turner and
the Collections Manager Emily DeArmon for permission and assistance in
collecting tissue samples. We would also like to thank Scott Durst for
helpful comments on a previous version of the manuscript.