... fatal heart conditions that require the monitoring of physiological signals such as electrocardiogram (ECG) or respiratory rate. ECG screening must be conducted after applying full anaesthesia, causing potential physical and emotional stress as well as risk for the animal. Here, we present an electronic...

...–1200 min −1 , whereas the respiratory rate increased linearly from 50 to 600–800 min −1 . These rates are higher than the heart and respiratory rates reported for other small mammals at the same T b . The fraction of brown adipose tissue (BAT) was 9.2±1.6 % of body mass, which is higher than in any...

...Klaus D. Jürgens; Roger Fons; Thomas Peters; Susanne Sender ABSTRACT Heart and respiratory rates of the smallest mammal (mean adult body mass 2 g), the Etruscan shrew Suncus etruscus , were determined at rest and under stress conditions. Heart rate was obtained from electrocardiograms (ECGs...

...,), heart and respiratory rates. These were compared to similar relationships for flying birds. Respiratory evaporation dissipated only 10% of the heat produced. At ambient temperatures (T,) above 15°C, heat loss was facilitated by vasodilation of feet and wing membranes, but this mechanism became less...