journal article
Sep 01, 2016
Increased fat catabolism sustains water balance during fasting in zebra finches
Abstract
ABSTRACTPatterns of physiological flexibility in response to fasting are well established, but much less is known about the contribution of water deprivation to the observed effects. We investigated body composition and energy and water budget in three groups of zebra finches: birds with access to food and water, food-deprived birds having access to drinking water and food-and-water-deprived birds. Animals were not stimulated by elevated energy expenditure and they were in thermoneutral conditions; thus, based on previous studies, water balance of fasting birds was expected to be maintained by increased catabolism of proteins. In contrast to this expectation, we found that access to water did not prevent reduction of proteinaceous tissue, but it saved fat reserves of the fasting birds. Thus, water balance of birds fasting without access to water seemed to be maintained by elevated fat catabolism, which generated 6 times more metabolic water compared with that in birds that had access to water. Therefore, we revise currently established views and propose fat to serve as the primary source for metabolic water production. Previously assumed increased protein breakdown for maintenance of water budget would occur if fat stores were depleted or if fat catabolism reached its upper limits due to high energy demands.
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References
35
[1]
Aschoff "Der ruheumsatz von vögeln als funktion der tageszeit und der körpergröße" J. Ornithol. (1970) 10.1007/bf01668180
[2]
Bar "Adaptation of the physiological, endocrine, and digestive system functions to prolonged food deprivation in fish" (2012) 10.1007/978-3-642-29056-5_6
[3]
Bauchinger "The role of protein during migration in passerine birds" Biol. Conserv. Fauna (1998)
[4]
Bauchinger "Extent of phenotypic flexibility during long-distance flight is determined by tissue-specific turnover rates: a new hypothesis" J. Avian Biol. (2010) 10.1111/j.1600-048x.2010.05137.x
[5]
Bintz "Nitrogen catabolism during starvation and starvation with water deprivation in Richardson's ground squirrels" J. Comp. Physiol. B (1983) 10.1007/bf00690016
[6]
Cade "Water economy and metabolism of two Estrildine finches" Physiol. Zool. (1965) 10.1086/physzool.38.1.30152342
[7]
Calder "Gaseous metabolism and water relations of the zebra finch, Taeniopygia castanotis" Physiol. Zool. (1964) 10.1086/physzool.37.4.30152758
[8]
Chappell "The relationship of central and peripheral organ masses to aerobic performance variation in house sparrows" J. Exp. Biol. (1999) 10.1242/jeb.202.17.2269
[9]
Cherel "Five months of fasting in king penguin chicks: body mass loss and fuel metabolism" Am. J. Physiol. Regul. Integr. Comp. Physiol. (1985) 10.1152/ajpregu.1985.249.4.r387
[10]
Cherel "Physiology and biochemistry of long-term fasting in birds" Can. J. Zool. (1988) 10.1139/z88-022
[11]
Cynx "Effects of humidity on reproductive behavior in male and female zebra finches (Taeniopygia guttata)" J. Comp. Psychol. (2001) 10.1037/0735-7036.115.2.196
[12]
Gerson "Flight at low ambient humidity increases protein catabolism in migratory birds" Science (2011) 10.1126/science.1210449
[13]
Gerson "House sparrows (Passer domesticus) increase protein catabolism in response to water restriction" Am. J. Physiol. Regul. Integr. Comp. Physiol. (2011) 10.1152/ajpregu.00701.2010
[14]
Giuliano "Comparative reproductive and physiological responses of northern bobwhite and scaled quail to water deprivation" Comp. Biochem. Physiol. A Mol. Integr. Physiol. (1998) 10.1016/s1095-6433(98)01015-0
[15]
Hohtola "Fasting endurance and cold resistance without hypothermia in a small predatory bird: the metabolic strategy of Tengmalm's owl, Aegolius funereus" J. Comp. Physiol. B (1994) 10.1007/bf00714579
[16]
Jenni "Fuel supply and metabolic constraints in migrating birds" J. Avian Biol. (1998) 10.2307/3677171
[17]
Jenni-Eiermann "Metabolic responses to flight and fasting in night-migrating passerines" J. Comp. Physiol. B (1991) 10.1007/bf00257901
[18]
Jenni-Eiermann "Fasting in birds: general patterns and the special case of endurance flight" (2012) 10.1007/978-3-642-29056-5_11
[19]
Klaassen "Metabolic constraints on long-distance migration in birds" J. Exp. Biol. (1996) 10.1242/jeb.199.1.57
[20]
Klaassen "May dehydration risk govern long-distance migratory behaviour?" J. Avian Biol. (2004) 10.1111/j.0908-8857.2004.03308.x
[21]
Klaassen "Energetics of fattening and starvation in the long-distance migratory garden warbler, Sylvia borin, during the migratory phase" J. Comp. Physiol. B (1994) 10.1007/bf00302551
[22]
Lynn "Food, stress, and reproduction: Short-term fasting alters endocrine physiology and reproductive behavior in the zebra finch" Horm. Behav. (2010) 10.1016/j.yhbeh.2010.03.015
[23]
McKechnie "Climate change increases the likelihood of catastrophic avian mortality events during extreme heat waves" Biol. Lett. (2010) 10.1098/rsbl.2009.0702
[24]
McNabb "A comparative study of water balance in three species of quail—II. Utilization of saline drinking solutions" Comp. Biochem. Physiol. (1969) 10.1016/0010-406x(69)90547-7
[25]
Menon "Avian epidermal differentiation II. Adaptive response of permeability barrier to water deprivation and replenishment" Tissue Cell (1989) 10.1016/0040-8166(89)90023-2
[26]
Mizrahy "Availability of water affects renewal of tissues in migratory blackcaps during stopover" Integr. Comp. Biol. (2011) 10.1093/icb/icr005
[27]
Prior "Effects of water restriction on reproductive physiology and affiliative behavior in an opportunistically-breeding and monogamous songbird, the zebra finch" Horm. Behav. (2013) 10.1016/j.yhbeh.2012.12.010
[28]
Rashotte "Influence of food and water availability on undirected singing and energetic status in adult male zebra finches (Taeniopygia guttata)" Physiol. Behav. (2001) 10.1016/s0031-9384(01)00600-x
[29]
Sadowska "Evolution of basal metabolic rate in bank voles from a multidirectional selection experiment" Proc. R. Soc. B Biol. Sci. (2015) 10.1098/rspb.2015.0025
[30]
Sapir "The effect of water availability on fuel deposition of two staging Sylvia warblers" J. Avian Biol. (2004) 10.1111/j.0908-8857.2004.03212.x
[31]
Schwilch "Protein loss during long-distance migratory flight in passerine birds: adaptation and constraint" J. Exp. Biol. (2002) 10.1242/jeb.205.5.687
[32]
Speakman "Maximal heat dissipation capacity and hyperthermia risk: neglected key factors in the ecology of endotherms" J. Anim. Ecol. (2010) 10.1111/j.1365-2656.2010.01689.x
[33]
Tieleman "Phenotypic variation of larks along an aridity gradient: are desert birds more flexible?" Ecology (2003) 10.1890/0012-9658(2003)084[1800:pvolaa]2.0.co;2
[34]
Tsurim "Drinking water boosts food intake rate, body mass increase and fat accumulation in migratory blackcaps (Sylvia atricapilla)" Oecologia (2008) 10.1007/s00442-008-0970-9
[35]
Zann (1996) 10.1093/oso/9780198540793.001.0001
Metrics
32
Citations
35
References
Details
- Published
- Sep 01, 2016
- Vol/Issue
- 219(17)
- Pages
- 2623-2628
- License
- View
Authors
Funding
Uniwersytet Jagielloński w Krakowie
Award: DS 757 (K/ZDS/004151)
Cite This Article
Joanna Rutkowska, Edyta T. Sadowska, Mariusz Cichoń, et al. (2016). Increased fat catabolism sustains water balance during fasting in zebra finches. Journal of Experimental Biology, 219(17), 2623-2628. https://doi.org/10.1242/jeb.138966
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