温度对密云点麻蜥心电活动的影响(英文).pdfVIP

维普资讯 动 物 学 研 究 1998，19(4)：269~276 CN 53-1040／Q ISSN 0254-5853 ZoologicalResearch EFFECTSoFBoDY TEM PERATURE oN ELECTR0CARD10GRAM S0FLIZARD Eremiasmultiocellata LIRen—de CHEN Qiang@ LIU Nai—fa (DepartmentofBiology，LanzhouUniversity，Lanzhou 730001) Abstract Electrocardiograms(ECG)ofEremias用“ttiocettataweresmdiedat535℃ in bodytenapcrature．Electrocardiogram waveintervals(R R，P R，QRS，T P，andR T) shortened whileheartrateincreasedwith theincreasingofbodytempe rature Theaverageheart ratewasl46／rainat5℃．whereasitwas 20l／rainat35℃．Theduradonofwaveintervalsof ECG andtheheartratewererelatedsignificantlytothebodytemperature 0．001)Among the components of a cardiae cycle the cardiac rest period fTP intervals】 and the atriaventricutarconductiontimefPR interva1)wereaffectedmostlybybodytemperature In theotherhandtheventficulardepolarizationandrepolarization(ORSandR—Tintervals)were relativelylessaffectedbythebo dytempe rature．Theincreasingofheartratewithbodytempera- turewasmainlycau8edbytheshorteningofECG waveintervals．andtheT Pinterval(the cardiaerestperiod)wasshortenedITlorenoticeablythanotherintervals． Keywords Eremiasmuttiocettata，Elcetroacrdiogram，Bodytme perature Theheartactivityoflizardsandtherelationbetweenhaertactivityandbodytemper- ature havebeen studied since 1960s (Baytholomew， 1962， l963， l964； Dawson， 1958， 1960， 1963； Furman， 1960；Licht， 1965；Maynard， 1960；MulIon， 1967)， However． mostearly workswere focused on the relation between heart rate and body／environmenttemperature．Poreell(1986)studiedtheelectrocardiogram offizard Gallotiagalloti(bodyweight43—47 andreportedthepatternthatthewaveintervals 0fECG varled withbodytempe ratureandthecharacteristicofexcimtionc