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Clark, T.D., Butler, P.J. and Frappell, P.B. 2006. Factors influencing the prediction of metabolic rate in a reptile. Func. Ecol. (in press).

Clark, T.D, Ryan, T., Ingram, B.A., Woakes, A.J., Butler, P.J. and Frappell, P.B. 2005. Factorial aerobic scope is independent of temperature and primarily modulated by heart rate in exercising Murray cod (Maccullochella peellii peellii). Physiol. Biochem. Zool. 78, 347-355.

Clark, T.D., Wang, T., Butler, P.J. and Frappell, P.B. 2005. Factorial scopes of cardio-metabolic variables remain constant with changes in body temperature in the varanid lizard, Varanus rosenbergi. Am. J. Physiol. 288, R992-R997.

Clark, T.D., Butler, P.J. and Frappell, P.B. 2005. Digestive state influences the heart rate hysteresis and rates of heat exchange in the varanid lizard, Varanus rosenbergi. J. exp. Biol. 208, 2269-2276.

Day, N. and Butler, P.J. 2005. The effects of acclimation to reversed seasonal temperatures on the swimming performance of adult brown trout Salmo trutta. J. exp. Biol. 208, 2683-2692.

Fahlman, A., Schmidt, A., Handrich, Y., Woakes, A.J. and Butler, P.J. 2005. Metabolism and thermoregulation during fasting in king penguins, Aptenodytes patagonicus, in air and water. Am. J. Physiol. 289, R670-679.

Green, J., Woakes, A., Boyd, I. and Butler, P J. 2005. Cardiovascular adjustments during locomotion in penguins. Can. J. Physiol. 83, 445-454.

Green, J.A., Boyd, I.L., Woakes, A.J., Green, C.J. and Butler, P.J. 2005. Do seasonal changes in metabolic rate facilitate changes in diving behaviour? J. exp. Biol. 208, 2581-2593

Green, J. A., Boyd, I. L., Woakes, A. J. and Butler, P. J. 2005. Behavioural flexibility during year-round foraging in macaroni penguins. Mar. Ecol. Prog. Ser. 296, 183-196.

Green, J.A., White, C.R. and Butler, P.J. 2005. Allometric estimation of metabolic rate from heart rate in penguins. Comp Biochem Physiol A 142, 478-484.

Grémillet, D., Kuntz, G., Gilbert, C., Woakes, A.J., Butler, P.J and Le Maho, Y. 2005. Cormorants dive through the Polar night. Biol Letts 1, 469-471.

Grémillet, D., Kuntz, G., Woakes, A.J., Gilbert, C., Robin, J-P., Le Maho Y. and Butler. P.J. 2005. Year-round recordings of behavioural and physiological parameters reveal the survival strategy of a poorly insulated diving endotherm during the Arctic winter. J exp Biol 208, 4231-4241.

Guillemette, M., Woakes, A. J., Henaux, V., Grandbois, J-M. and Butler, P. J. 2005. The effect of depth on the diving behaviour of common eiders. Can. J. Zool. 82, 1818-1826

Halsey, L.G., Wallace, S.E, Woakes, A.J., Winkler, H. and Butler P.J. 2005.  Tufted ducks Aythya fuligula do not control buoyancy during diving. J. av. Biol. 36, 261-267.

Halsey, L.G., Butler, P.J. and Woakes, A.J. 2005. Breathing hypoxic gas affects the physiology as well and the diving behaviour of tufted ducks. Physiol. Biochem. Zool. 78, 273-284.

Halsey, L., Brand, O.J., Woakes, A.J. and Butler, P.J. 2006. Experiments on single diving animals in the laboratory often measure dives of decreased effort. Ibis 148, 164-166

Halsey, L.G., Butler, P.J. and Blackburn, T.M. 2006. A phylogenetic analysis of the allometry of diving. Am Nat (in press).

McKenzie, D.J., Garofalo, E., Winter, M.J., Ceradini, S., Verweij, F., Day, N., Hayes, R., van der Oost, R., Butler, P.J., Chipman, J.K. and Taylor, E.W. 2006. Swimming performance in fish: a physiological biomarker of aquatic pollution? Phil Trans Roy Soc (in press).

Watkins, E. J., Hall, A. D., Wiseman, J. and Butler, P. J. 2006. Feed metabolism and resting metabolic rate in mallards and domestic ducks. J Zool. (in press).

Winter, M.J. Verweij, F., Garofalo, E., Ceradini, S., McKenzie, D. J., Williams, M. A., Taylor, E. W., Butler, P. J., van der Oost, R. and Chipman, J. K. 2005. Tissue levels and biomarkers of organic contaminants in feral and caged chub (Leuciscus cephalus) from rivers in the West Midlands, UK. Aq Toxicol. 73, 394-405.