Kenneth Welch

faculty_img Academic Title: Associate Professor

Campus: UTSC

CSB Appointment: Full

Primary Undergraduate Department:
Biological Sciences, UTSC

Graduate Programs:
Cell & Systems Biology
Ecology & Evolutionary Biology

Titles and Honors
Academic or Administrative Appointments
Education:
Ph.D. 2007 University of California, Santa Barbara M.A. 2005 University of California, Santa Barbara B.Sc. 1998 Trinity University

 

Mailing Address
Department of Cell & Systems Biology
University of Toronto
1265 Military Trail
Scarborough, ON M1C 1A4
Canada

 

Contact Information
Office phone: 416-208-5100
Office: S 521B
Lab: SW 161E
Lab phone: 416-208-5147
Email: kwelch@utsc.utoronto.ca
URL: http://www.utsc.utoronto.ca/~kwelch/

 

Research Areas
Animal Biology
Evolutionary Biology
Physiology
Systems Biology

 

Research

Our lab adopts a comparative and integrative approach to the study of exercise, metabolism and muscle function. Much of our work focuses on animals with unique or extreme metabolic and locomotor capabilities. Examination of these organisms, informed by ecological and evolutionary context, has the power to reveal what features of design and physiology enable their extreme energetic and physical performance as well as what the limits are to such performance. Research extends from the lab to the field. Field sites include the Sierra Nevada mountain range of California, the Oak Ridges Morrain north of Toronto, Ontario Canada, Colima, Mexico, and the Atlantic dry forest of Sao Paolo, Brazil. We adopt both lab-based and field-based approaches to the study of animal function. Our understanding is incomplete without the work done in both settings. Lab-based approaches permit us to rigorously control conditions to gain unprecedented insights into physiological mechanism. Field-based studies permit us to evaluate the complex interplay of animal and environment.

 

Publications

2015

Top
Carbon stable-isotope tracking in breath for comparative studies of fuel use.Welch KC, PĂ©ronnet F, Hatch KA, Voigt CC, McCue MD.Ann. N. Y. Acad. Sci. 2015 Mar;
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2014

Top
Sugar flux through the flight muscles of hovering vertebrate nectarivores: a review.Welch KC, Chen CC.J. Comp. Physiol. B, Biochem. Syst. Environ. Physiol. 2014 Jul;
pubmed
Myosin heavy-chain isoforms in the flight and leg muscles of hummingbirds and zebra finches.Velten BP, Welch KC.Am. J. Physiol. Regul. Integr. Comp. Physiol. 2014 Jun;306(11):R845-51
pubmed

2013

Top
Glucose transporter expression in an avian nectarivore: the ruby-throated hummingbird (Archilochus colubris).Welch KC, Allalou A, Sehgal P, Cheng J, Ashok A.PLoS ONE 2013;8(10):e77003
pubmed
Neuromuscular control of hovering wingbeat kinematics in response to distinct flight challenges in the ruby-throated hummingbird, Archilochus colubris.Mahalingam S, Welch KC.J. Exp. Biol. 2013 Nov;216(Pt 22):4161-71
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Very low force-generating ability and unusually high temperature dependency in hummingbird flight muscle fibers.Reiser PJ, Welch KC, Suarez RK, Altshuler DL.J. Exp. Biol. 2013 Jun;216(Pt 12):2247-56
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2011

Top
The sugar oxidation cascade: aerial refueling in hummingbirds and nectar bats.Suarez RK, Herrera M LG, Welch KC.J. Exp. Biol. 2011 Jan;214(Pt 2):172-8
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The power of feeder-mask respirometry as a method for examining hummingbird energetics.Welch KC.Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. 2011 Mar;158(3):276-86
pubmed

2010

Top
Neuromuscular control of wingbeat kinematics in Anna's hummingbirds (Calypte anna).Altshuler DL, Welch KC, Cho BH, Welch DB, Lin AF, Dickson WB, Dickinson MH.J. Exp. Biol. 2010 Jul;213(Pt 14):2507-14
pubmed

2009

Top
Fiber type homogeneity of the flight musculature in small birds.Welch KC, Altshuler DL.Comp. Biochem. Physiol. B, Biochem. Mol. Biol. 2009 Apr;152(4):324-31
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2008

Top
Dietary sugar as a direct fuel for flight in the nectarivorous bat Glossophaga soricina.Welch KC, Herrera M LG, Suarez RK.J. Exp. Biol. 2008 Feb;211(Pt 3):310-6
pubmed

2007

Top
Oxidation rate and turnover of ingested sugar in hovering Anna's (Calypte anna) and rufous (Selasphorus rufus) hummingbirds.Welch KC, Suarez RK.J. Exp. Biol. 2007 Jun;210(Pt 12):2154-62
pubmed
Oxygen consumption rates in hovering hummingbirds reflect substrate-dependent differences in P/O ratios: carbohydrate as a 'premium fuel'.Welch KC, Altshuler DL, Suarez RK.J. Exp. Biol. 2007 Jun;210(Pt 12):2146-53
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2006

Top
Hummingbirds fuel hovering flight with newly ingested sugar.Welch KC, Bakken BH, Martinez del Rio C, Suarez RK.Physiol. Biochem. Zool. 2006 Nov-Dec;79(6):1082-7
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2005

Top
Allometric scaling of flight energetics in Panamanian orchid bees: a comparative phylogenetic approach.Darveau CA, Hochachka PW, Welch KC, Roubik DW, Suarez RK.J. Exp. Biol. 2005 Sep;208(Pt 18):3581-91
pubmed
Energy metabolism in orchid bee flight muscles: carbohydrate fuels all.Suarez RK, Darveau CA, Welch KC, O'Brien DM, Roubik DW, Hochachka PW.J. Exp. Biol. 2005 Sep;208(Pt 18):3573-9
pubmed