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2012  |  2011  |  2010  |  2009  |  2007  |  2006  |  2005  |  2004  |2003  |  2002  |  2001  |  2000  |  1998

(lab members in bold)

Peer reviewed


Mager EM, Medeiros LR, Lange AP, McDonald MD (2012) The toadfish serotonin 2A (5-HT2A) receptor: molecular characterization and its potential role in urea excretion.  Comp Biochem Physiol A In Press

McDonald MD*, Gilmour KM, Walsh PJ (2012) New insights into the mechanisms controlling urea excretion in fish. Resp Neurobiol Physiol In Press

McDonald MD (2012) Homeostasis and feedback control loops.  Nature Education  In Press

McDonald MD, Wood CM, Walsh PJ (2012) 5-hydroxytryptamine initiates pulsatile urea excretion from perfused gills of the Gulf toadfish (Opsanus beta). Comp Biochem Physiol A 160: 30-37

Rodela TR, McDonald MD, Walsh PJ, Gilmour KM (2012) Interactions between cortisol and Rh glycoprotein expression in ureogenic toadfish, Opsanus beta. J Exp Biol 215: 314-323

Rodela TR, Esbaugh AJ, Weihrauch D, Veauvy CM, McDonald MD, Gilmour KM, Walsh PJ (2012) Revisiting the effects of crowding and feeding in the gulf toadfish, Opsanus beta: the role of Rhesus glycoproteins in nitrogen metabolism and excretion. J Exp Biol 215: 301-313


Rodela, TR Esbaugh AJ, McDonald MD, Gilmour KM, Walsh PJ (2011) Evidence for transcriptional regulation of the urea transporter in the gill of gulf toadfish, Opsanus beta. Comp Biochem Physiol 160B: 72-80

Genz J, McDonald MD, Grosell M (2011) Concentration of MgSO4 in the intestinal lumen of Opsanus beta limits tolerance to hypersalinity. Am J Physiol 300: R895-R909


McDonald MD, Gonzalez A, Sloman KA (2010) Higher levels of aggression are observed in socially dominant toadfish treated with the selective serotonin reuptake inhibitor, fluoxetine. Comp Biochem Physiol 153C: 107-112

Barimo JF, McDonald MD, Walsh PJ (2010) Diel patterns of nitrogen excretion and behavior in the gulf toadfish (Opsanus beta) in laboratory versus outdoor mesocosm settings. Physiol Biochem Zool 83: 958-972

Medeiros LR, Mager EM, Grosell M, McDonald MD (2010) The serotonin subtype 1A receptor regulates cortisol secretion in the Gulf toadfish, Opsanus beta. Gen Comp Endocrinol168: 377-387

Wood CM, Grosell M, McDonald MD, Playle RC, Walsh PJ (2010) Effects of waterborne silver in a marine teleost, the Gulf toadfish (Opsanus beta): effects of feeding and chronic exposure on bioaccumulation and physiological responses. Aquat Toxicol 99: 138-148

McDonald MD, Gilmour KM, Walsh PJ, Perry SF (2010) Cardiorespiratory reflexes in the gulf toadfish, Opsanus beta. Resp Physiol Neurobiol 170: 59-66


Correa AMS, McDonald MD, Baker AC (2009) Development of clade-specific Symbiodinium primers for quantitative PCR (qPCR) and their application to detecting clade D symbionts in Caribbean corals. Mar Biol 156: 2403-2411

Rodela TM, Gilmour KM, Walsh PJ, McDonald MD (2009b) Cortisol-sensitive urea transport across the gill basolateral membrane of the gulf toadfish, Opsanus beta. Am J Physiol 297: R313-R322

Laberge T, Walsh PJ, McDonald MD (2009) Effects of crowding on ornithine-urea cycle enzyme gene expression and activity of the gulf toadfish (Opsanus beta). J Exp Biol 212: 2394-2402

Morando MB, Medeiros LR, McDonald MD (2009) Fluoxetine treatment affects nitrogen waste excretion and osmoregulation in a marine teleost fish. Aquat Toxicol 95: 164-171

Rodela TM, McDonald MD, Walsh PJ, Gilmour KM (2009a) The regulatory role of glucocorticoid and mineralocorticoid receptors in pulsatile urea excretion of the gulf toadfish, Opsanus beta. J Exp Biol 212: 1849-1858

Scott CP, VanWye J, McDonald MD, Crawford DL (2009) Technical analysis of Fundulus heteroclitus cDNA microarrays. PLoS ONE 4: e4486. DOI:10.1371/journal.pone.000 4486

McDonald MD, Vulesevic B, Perry SF, Walsh PJ (2009) Urea transporter and glutamine synthetase regulation and localization in gulf toadfish gill. J Exp Biol 212: 704-712

Veauvy CM, Walsh PJ, McDonald MD (2009) Effect of elevated ammonia on brain glutamine in the ureotelic gulf toadfish (Opsanus beta) and the ammoniotelic midshipman (Porichthys notatus). Physiol Biochem Zool 82: 345-52


McDonald MD, Walsh PJ (2007) Aglomerular kidney function when challenged with exogenous MgSO4 loading or environmental MgSO4 depletion. J Exp Zool 307A: 676-687

Walsh PJ, Veauvy CM, McDonald MD, Pamenter ME, Buck LT, Wilkie MP (2007) Piscine insights into comparisons of anoxia tolerance, ammonia toxicity, stroke and hepatic encephalopathy. Comp Biochem Physiol 147A: 332-343

McDonald MD, Gilmour KM, Barimo JF, Frezza PE, Walsh PJ, Perry SF (2007) Is urea pulsing in toadfish related to environmental O2 or CO2 levels? Comp Biochem Physiol 146A: 366-374


McDonald MD, Smith CP, Walsh PJ (2006) The physiology and evolution of urea transport in fishes. J Membr Biol 212: 93-107

Pane EF, McDonald MD, Curry NH, Blanchard J, Wood CM, Grosell M (2006) Hydromineral balance in the marine gulf toadfish (Opsanus beta) exposed to waterborne or infused nickel. Aquat Toxicol 80: 70-81

McDonald MD, Grosell M (2006) Maintaining osmotic balance with an aglomerular kidney. Comp Biochem Physiol 143A: 447-458


Veauvy CM, McDonald MD, Van Audekerke J, Vanhoutte G, Van Camp N, Van der Linden A, Walsh PJ (2005) Ammonia affects brain nitrogen metabolism but not hydration status in the gulf toadfish (Opsanus beta) Aquat Tox 74: 32-46

Sloman KA, McDonald MD, Barimo JF, Winberg S, Wood CM, Walsh PJ (2005) Does pulsatile urea excretion serve as a social signal in the gulf toadfish, Opsanus beta? Physiol Biochem Zool78: 724-735


McDonald MD, Wood CM, Grosell M, Walsh PJ (2004) Glucocorticoid receptors are involved in the regulation of pulsatile urea excretion in toadfish. J Comp Physiol 174B: 649-658

Wood CM, McDonald MD, Walker P, Grosell M, Barimo JF, Playle RC and Walsh PJ (2004) Bioavailability of silver and its relationship to ionoregulation and silver speciation across a range of salinities in the euryhaline gulf toadfish (Opsanus beta). Aquat Toxicol 70: 137-157

McDonald MD, Walsh PJ (2004) Dogmas and controversies in the handling of nitrogenous wastes: 5-HT2-like receptors are involved in triggering pulsatile urea excretion in the gulf toadfish, Opsanus beta. J Exp Biol 207: 2003-2020

Grosell M,McDonald MD, Wood CM, Walsh PJ (2004) Effects of prolonged copper exposure in the marine gulf toadfish (Opsanus beta). II. Copper accumulation, drinking rate and Na+/K+ ATPase activity in osmoregulatory tissues. Aquat Toxicol 68: 263-275

Grosell M, McDonald MD, Wood CM, Walsh PJ (2004) Effects of prolonged copper exposure in the marine gulf toadfish (Opsanus beta). I. Hydromineral balance and plasma nitrogenous waste products. Aquat Tox 68: 249-262

McDonald MD, Wood CM (2004) Evidence for facilitated diffusion of urea across the gill basolateral membrane of the rainbow trout (Oncorhynchus mykiss). Biochim Biophys Acta 1663: 89-96

McDonald MD, Wood CM (2004) The effect of chronic cortisol elevation on urea metabolism and excretion in the rainbow trout (Oncorhynchus mykiss). J Comp Physiol 174B: 71-81


Wood CM, McDonald MD, Sundin L, Laurent P, Walsh PJ (2003) Pulsatile urea excretion in the gulf toadfish: mechanisms and controls. Comp Biochem Physiol 136B: 667-684

McDonald MD, Wood CM (2003) Differential handling of urea and its analogues suggests carrier-mediated urea excretion in the freshwater rainbow trout. Physiol Biochem Zool 76: 791-802.

McDonald MD, Grosell M, Wood CM, Walsh PJ (2003) Branchial and renal handling of urea in the gulf toadfish, Opsanus beta: the effect of exogenous urea loading. Comp Biochem Physiol 134A: 763-776


McDonald MD, Walsh PJ, Wood CM (2002b) Branchial and renal excretion of urea and urea analogues in the plainfin midshipman, Porichthys notatus. J Comp Physiol 172B: 699-712

McDonald MD, Wood CM, Walsh PJ (2002a) Transport physiology of the urinary bladder in teleosts: a suitable model for renal urea handling? J Exp Zool 292: 604-617


Wood CM, Warne JM, Balment RJ, Wang Y, McDonald MD, Laurent P, Walsh PJ (2001) Do circulating plasma AVT and/or cortisol levels control pulsatile urea excretion in the gulf toadfish (Opsanus beta)? Comp Biochem Physiol 129A: 859-872


McDonald MD, Wood CM, Wang Y, Walsh PJ (2000) Differential branchial and renal handling of urea, acetamide and thiourea in the gulf toadfish, Opsanus beta: evidence for two transporters. J Exp Biol 203: 1027-1037


McDonald MD, Wood CM (1998) Reabsorption of urea by the kidney of the freshwater rainbow trout. Fish Physiol Biochem 18: 375-386

Book Chapters

McDonald MD, Riemer D (2008) The Fate of Pharmaceuticals and Personal Care Products in the Environment. In Oceans and Human Health: Risks and Remedies from the Sea. Walsh PJ , Smith SL, Fleming LE, Gerwick W, Solo-Gabriele H (eds). Elsevier

McDonald MD (2007) The renal contribution to salt and water balance. In Fish Osmoregulation. Baldisserotto B, Mancera JM, Kapoor BG (eds). Science Publishers, Enfield, NH