1 1 Long-lived population demographics in a declining, vulnerable fishery - bigmouth buffalo 2 (Ictiobus cyprinellus) of Jamestown Reservoir, North Dakota 3 4 Alec R. Lackmann 1* , Brandon J. Kratz 2 , Ewelina S. Bielak-Lackmann 3 , Reed I. Jacobson 4 , Derek 5 J. Sauer 5 , Allen H. Andrews 6 , Malcolm G. Butler 3 , Mark E. Clark 1 6 7 * corresponding author: alackman@d.umn.edu 8 1 University of Minnesota Duluth, Department of Biology, 1035 Kirby Drive, SSB 207, Duluth, 9 MN 55812; alackman@d.umn.edu; meclark@d.umn.edu 10 2 North Dakota Game and Fish Department, 3320 East Lakeside Rd., Jamestown, ND 58401; 11 bkratz@nd.gov 12 3 North Dakota State University, Department of Biological Sciences, Fargo, North Dakota, USA; 13 ewelina.bielaklackma@ndsu.edu; malcolm.butler@ndsu.edu 14 4 University of Minnesota Twin Cities, Department of Biochemistry, Molecular Biology, and 15 Biophysics, 123 Snyder Hall, 1475 Gortner Ave Saint Paul, MN 55108; jaco2784@umn.edu 16 5 University of Auckland, Institute of Marine Science, Leigh Marine Laboratory, 160 Goat Island 17 Road, Leigh 0985, New Zealand; derek.sauer16@gmail.com 18 6 University of Hawaii at Manoa, Department of Oceanography, 1000 Pope Road, Honolulu, HI 19 96822, USA. astrofish226@gmail.com 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Page 1 of 38 Canadian Journal of Fisheries and Aquatic Sciences (Author's Accepted Manuscript) © The Author(s) or their Institution(s)