Heart Rate-Temperature Relationship in a Japanese Rat Snake

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Other Title
  • アオダイショウの心拍数と温度との関係

Description

From February to October, 1981, the heart rate of a Japanese rat snake, Elaphe climacophora, was measured with a clinic electrocardiograph. The ECG electrodes were made of fishhooks and attached subcutaneously. After attachment of leads the snake was put in a box covered with a black curtain and placed in a room without airconditioning. The body temperature was monitored with a thermistor thermometer, and ranged from 0 C in February to 33.5 C in July. Based on 22 data derived from 274 records, the smoothed curve follows the equation of T=-7.263+10.873 ln H (r=0.983) where T equals temperature and H equals heart beats per minute. The logarithmic regression was also proved in some other snakes for the heart rate-temperature relationship.

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