Louise Tunnah

photo of Louise Tunnah
Graduate Student, PhD
SSC 3464
Wright Lab

Life in water and life on land pose unique challenges for animals living in each type of environment. Yet amphibious fishes, those that emerse and survive out of water as part of their natural life-history, straddle life in both worlds. Consequently, their physiology must exhibit sufficient plasticity to balance trade-offs and allow survival in both types of environments. The ability to effectively transport oxygen and remove respiratory waste products is critical to the maintenance of life - the central question addressed in my research asks how respiratory plasticity in amphibious fishes allows effective respiration in both aquatic and terrestrial habitats. Results from this work will fill a gap in knowledge not only for extant amphibious fish species but may also provide evolutionary clues about one of the major evolutionary steps - the expansion of life from water to land.

  • Master of Science, Biology, Mount Allison University: 2014-2016
  • Bachelor of Science, Honours, Biology, Mount Allison University: 2008-2012
  • Capaz J, Tunnah L, MacCormack T, Lamarre S, Sykes A, and Driedzic W. (2017). Hypoxic induced decrease in oxygen consumption in cuttlefish (Sepia officinalis) is associated with minor increases in mantle octopine but no changes in markers of protein turnover. Frontiers in Physiology. 8: 1-10.
  • Tunnah L, Currie S, and MacCormack T. (2017). Do prior diel thermal cycles influence the physiological response of Atlantic salmon (Salmo salar) to subsequent heat stress? Canadian Journal of Fisheries and Aquatic Sciences. 74(1): 127-139.
  • Morash A, MacKellar S, Tunnah L, Barnett D, Stehfest K, Semmens J, and Currie S. (2016). Pass the salt: Physiological consequences of ecologically relevant hypo-osmotic exposure in juvenile gummy and school sharks (Mustelus antarcticus & Galeorhinus galeus). Conservation Physiology. 4: cow036.
  • Tunnah L, MacKellar S, Barnett D, MacCormack T, Stehfest K, Morash A, Semmens J, and Currie S. (2016). Physiological responses to hypersalinity correspond to nursery ground usage in two inshore shark species (Mustelus antarcticus and Galeorhinus galeus). The Journal of Experimental Biology. 219: 2028–2038.
  • Callaghan N, Tunnah L, Currie S, and MacCormack T. (2016). Metabolic adjustments to short-term diurnal temperature fluctuation in the rainbow trout (Oncorhynchus mykiss). Physiological and Biochemical Zoology. 89(6): 498-510.
  • Bessemer R, Butler K, Tunnah L, Callaghan N, Rundle A, Currie S, Dieni C, MacCormack T. (2015). Cardiorespiratory toxicity of environmentally relevant zinc oxide nanoparticles in the freshwater fish Catostomus commersonii. Nanotoxicology. 9(7): 861-870.
  • MacLellan R, Tunnah L, Barnett D, Wright P, MacCormack T, and Currie S. (2015). Chaperone roles for TMAO and HSP70 during hyposmotic stress in the spiny dogfish shark (Squalus acanthias). Journal of Comparative Physiology B. 185: 729–740.
  • Tunnah L, Deck C, Alazar A, Currie S. (2012). Getting fresh: the role of chemical and molecular chaperones in dogfish (Squalus acanthias) experiencing hypo-osmotic stress. The Bulletin. 51: 21.