Iyob Tseshaye

  • Adjunct Professor, School of Freshwater Sciences
  • Fisheries Research Specialist, Wisconsin Department of Natural Resources


  • PhD, Fisheries, Wageningen University & Research, 2007 
  • MS, Fisheries, Wageningen University & Research, 1998 
  • BS, Marine Biology and Fisheries, 1995 

Research Interests 

  • Modeling fish population dynamics 
  • Fish stock assessment 

Recent and Selected Publications 

Koenig, L.D., Dembkowski, D.J., Hansen, S.P., Tsehaye, I., Paoli T.J., Zorn T.G., and Isermann, D.A. in press. Diet composition and overlap for walleye, lake whitefish, and yellow perch in Green Bay, Lake Michigan. J. Great Lakes Res. 

Scribner, K.T., Brenden, T. O., Elliot, R., Donofrio, M., Bott, K., Kanefsky, J., Homola, J. J., Tsehaye, I., Bence, J. R., Baker, E. A., and Auer, N. A. 2022. Mixed stock analysis of genetic compositions of lake sturgeon (Acipenser fulvescens) mixtures in Lake Michigan: hierarchical spatial heterogeneity and evidence of improving recruitment in Wisconsin spawning populations. Can. J. Fish. Aquat. Sci. 79 (4), 652–669. 

Tsehaye, I., Piszczek, P., & Olson, K. 2021. Optimal sampling designs for estimating salmonid run abundances from video recordings at a fishway on the Bois Brule River, a tributary to Lake Superior. J. Great Lakes Res. 47, 1419–1428. 

Brenden, T.O., Tsehaye, I., Bence, J.R., Kanefsky, J. & Scribner, K.T. 2018. Indexing recruitment for source populations contributing to mixed fisheries by incorporating age in genetic stock identification models. Can. J. Fish. Aquat. Sci., 75, 934954. 

Donofrio, M.C., Scribner, K.T., Baker, E.A., Kanefsky, J., Tsehaye, I., & Elliot, R.F. 2018. Telemetry and genetic data characterize lake sturgeon breeding ecology and spawning site fidelity in Green Bay rivers of Lake Michigan. J. Appl. Ichthyol. 34 (2), 302–313