《Metabolic rate and evaporative water loss in the silky starling （Sturnus sericeus）》.pdf

ZoologicalResearch35(4)：280—286 DOI：10．139183／．issn．2095—8137．2014．4．280 M etabolic rate and evaporative water loss in the silky starling (Sturnussericeus) Huan．HuanBAO，Qing．JianLIANG，Hong．LeiZHU ，Xiao．QiuZHOU ，Wei—HongZHENG， Jin．SongLIU。， 1．CollegeofChemtryandLfieSciences，Zh~iangNormalUniversity，~nhua321004，China 2．CollegeofL andEnvironmentalSciences，WenzhouUniversiyt，Wenzhou325035，China Abstract：Tobetterunderstandthephysiologicalcharacteristicsofthesilkystarling(Sturnussericeus)，itsbodvtemperature(T0． basalmetabolicrate(BMR)，evaporativewater1OSS z1andthermalconductance(63elicitedbvdi疵rentambienttemperautres ()(5—30。C)weredeterminedinthepresentsutdy．Ourresultsshowedthattheyhaveahigh (41．6~0．1。C)，awidethermal neutralzone(TNZ)(20—27．5。C)andarelatively1ow jlRwithintheTNZ(3I37士0．17mLO2／g．h)．TheEWLwasnearlystablebelow theTNZ (0．91士0．07mgH2O／gh·)butincreasedremarkablywithinandaboretheTNZ．TheCwasconstantbelow theTNZ,witha minimum valueof0．14~0．01mLO2／g-h—C．ThesefindingsindicatethattheBMR，TbandE脱 ofthesilkystarlingwereallaffected by ，especiallywhen wasbelow20。C andtheEWLplaysanimportantroleinthermalregulation ． Keywords：Silkystarling(Sturnussericeus)；Basalmetabolicrate；Bodytemperature；Evaporativewaterloss Endotherlnsrelyprimarilyonenergymetabolism to Thermoregulation is conducted by balancing maintainaconstantbodytemperature．Forbirds，keeping heatproductionandheatdissipation．Theevaporative anoptimalenergybalanceisakeysurvivalstrategy,and waterlossrEWL1isthemainwayanimalsdissipate isprimarilyachievedbyadjustingmorphology,physi— heatand includesboth cutaneousfC )and resp ology andbehavior in responseto the energy requir- iratorywater1OSS(RWL)(Dawson，1982；Tieleman ementsoftheenvironment(Bozinovic，1992；Weathers，