Tanya Prystay

 (May 2016 - May 2018)

Thesis topic: Using heart rate loggers to determine smallmouth bass parental care energy investment


Personal Profile

Tanya’s research focuses on using heart rate as a proxy for measuring fish energy investment under various stress conditions. Her previous work involved describing sockeye salmon heart rate profiles after a catch-and-release fishing event. Now her research concentrates on describing spawning energy investment with a focus on smallmouth bass (Micropterus dolomieu) in the Ontario Rideau Lakes, and sockeye salmon (Onchorhynchus nerka) in British Colombia. Spawning success is crucial for individual fitness and population success. Smallmouth bass undergo parental care behaviour where the male cleans the nest and defends the eggs from predators until the offspring are able to defend themselves. Contrastingly, mature sockeye salmon migrate long distances from salt water to fresh water spawning grounds, where they spawn and die before the eggs become fry. Smallmouth bass and sockeye salmon play an important economical, ecological, and cultural role in Canada. Although both species exhibit different spawning behaviours, both spawning methods are highly energetically costly. Understanding the magnitude of the cost of spawning can be further used to understand the effects of other abiotic and biotic stressors on spawning success.

Lab Publications (14)

  • Piczak, M. L., Robichaud, J. A., Morrison, P., Rous, A. M., Mulder, I. M., Hill, C. J., Prystay, T. S., Rosner-Katz, H., Robinson, K. F., Bennett, J. R. and Cooke, S. J. 2023. Structured decision making remains underused in ecological restoration despite opportunities. Environment Systems and Decisions.

  • Journal of Fish Biology Cover Image

    Lawrence, M.J, T.S. Prystay, M. Dick, E.J. Eliason, C.K. Elvidge, S.G. Hinch, D.A. Patterson, A.G. Lotto and S.J. Cooke.  2023.  Metabolic constraints and individual variation shape the trade-off between physiological recovery and antipredator responses in adult sockeye salmon.  Journal of Fish Biology. 103:280-291.

  • Canadian Journal of Zoology Cover Image

    Little, A., T. Prystay, E.A. Hardison, T. Dressler, K. Kraskura, S.J. Cooke, D.A. Patterson, S.G. Hinch and E.J. Eliason.  2023. Evaluating cardiac oxygen limitation as a mechanism for female-biased mortality in coho salmon (Oncorhynchus kisutch).  Canadian Journal of Zoology.  101(3):163-171.

  • Comparative Biochemistry and Physiology Cover Image

    Ekström, A., T.S. Prystay, A.E.I. Abrams, A. Carbajal Brossa, P.E. Holder, A.J. Zolderdo, E. Sandblom and S.J. Cooke. 2022. Impairment of branchial and coronary blood flow reduces reproductive fitness, but not cardiac performance in paternal smallmouth bass (Micropterus dolomieu). Comparative Biochemistry and Physiology A. 267:111165.

  • Kraskura, K., E.A. Hardison, A.G. Little, T. Dressler, T.S. Prystay, B. Hendriks, A.P. Farrell, S.J. Cooke, D.A. Patterson, S.G. Hinch and E.J. Eliason. 2021. Sex-specific differences in swimming, aerobic metabolism, and recovery from exercise in adult coho salmon (Oncorhynchus kisutch) across ecologically relevant temperatures. Conservation Physiology. 9(1):coab016.

See All 14 Publications by Tanya Prystay