Carol Bucking

PhD (McMaster)
Assistant Professor

Research Focus

My research focuses on how the surrounding environment influences the gastrointestinal tract and digestion in fish species. As a comparative physiologist I look at a number of different fish species, both marine and freshwater, and as an integrative physiologist I use a wide variety of techniques in this pursuit — from molecular biology to behavioural studies. Specifically, my research aims to seek a mechanistic and functional understanding of how animals cope with challenges associated with, and during, feeding and starvation to ultimately answer the question — why do animals have the digestive physiology they do? To answer this my research focuses on two reciprocal questions.

  1. How does the environment affect the physiology of the gastrointestinal tract and digestion and why have these responses have evolved?
  2. How does the physiology of the gastrointestinal tract and digestion affect an organism’s interaction with its environment and why have these responses have evolved?

My research is based on three key biological fields: physiology, behavior, and evolution with an emphasis on physiology. While I investigate questions founded solely within each discipline, I also explore questions that exist in the overlap between the disciplines, using a variety of techniques across numerous biological levels.

Please refer to webpage for more information.

Sample Publications:

Bucking, C., LeMoine, C.M.R., Craig, P.M., and Walsh, P.J. (2013) Nitrogen metabolism of the intestine during digestion in a teleost fish, the plainfin midshipman (Porichthys notatus). J. Exp. Biol. In Press.

Bucking, C., Edwards, S.L., Tickle, P., Smith, C.P. and Walsh, P.J. (2013) Immunohistochemical localization of urea and ammonia transporters in the gill and intestine of two related fish species, the toadfish and the midshipman. Cell Tiss. Res. In Press.

Bucking, C., Wood, C.M., and Grosell, M. (2012) Diet influences salinity preference of an estuarine fish, the killifish Fundulus heteroclitus. J. Exp. Biol. 215: 1965-1974.

Bucking, C., and Wood, C.M. (2012) Digestion of a single meal affects gene expression of ion and ammonia transporters and glutamine synthetase activity in the gastrointestinal tract of freshwater rainbow trout.J. Comp. Physiol. B. 182:341-350.

Bucking, C., and Schulte, P.M. (2012) Environmental and nutritional regulation of expression and function of two peptide transporter (PepT1) isoforms in a euryhaline teleost. Comp. Biochem. Physiol. A.161:379-387.

Bucking, C., Glover, C.N., and Wood, CM. (2011) Digestion under duress: Nutrient acquisition and metabolism during hypoxia in the Pacific hagfish.Physiol. Biochem. Zool. 84: 607-617.

Glover, C.N., Bucking, C., and Wood, C.M. (2011) Adaptations to in situ feeding: novel nutrient acquisition pathways in an ancient vertebrate.Proc. R. Soc. B. 278: 3096-3101.

Bucking, C., Landman, M., and Wood, C.M. (2010) The role of the kidney in compensating the alkaline tide, electrolyte load, and fluid balance disturbance associated with feeding in the freshwater rainbow trout,Oncorhynchus mykiss. Comp. Biochem. Physiol. A. 156: 74-83.

Bucking, C., Fitzpatrick, J.L., Nadella, S.R., and Wood, C.M. (2009) Post-prandial metabolic alkalosis in the seawater–acclimated trout: the alkaline tide comes in. J. Exp. Biol. 212: 2159-2166.

Bucking, C., and Wood, C.M. (2008) The alkaline tide and ammonia excretion after voluntary feeding in freshwater rainbow trout. J. Exp. Biol. 211: 2533-2541.

Bucking, C., and Wood, C.M. (2007) Gastrointestinal transport of Ca2+ and Mg2+ during the digestion of a single meal in the freshwater rainbow trout. J. Comp. Physiol. B.

Bucking, C., and Wood, C.M. (2006) Water dynamics in the digestive tract of the rainbow trout during the processing of a single meal. J. Exp. Biol. 209: 1883-1893.