Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 331-341 |
| Number of pages | 11 |
| Journal | Comparative Biochemistry and Physiology -- Part A: Physiology |
| Volume | 64 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1979 |
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Metabolic and respiratory responses of arctic mammals to ambient temprature during the summer. / Casey, T.M.; Withers, P. C.; Casey, K.K.
In: Comparative Biochemistry and Physiology -- Part A: Physiology, Vol. 64, No. 3, 1979, p. 331-341.Research output: Contribution to journal › Article
TY - JOUR
T1 - Metabolic and respiratory responses of arctic mammals to ambient temprature during the summer
AU - Casey, T.M.
AU - Withers, P. C.
AU - Casey, K.K.
PY - 1979
Y1 - 1979
N2 - 1. 1. Respiratory frequency (f), tidal volume (Vt) and minute volume ( V ̇min) of eight species and oxygen consumption ( V ̇o2) of six species of summer acclimatized Arctic mammals were similar to that of temperate zone mammals. 2. 2. In small mammals, V ̇o2 increases at low Ta resulted in augmented V ̇min through increased f and Vt, while in large mammals f was relatively constant at low Ta. 3. 3. Except in weasels, basal metabolism was similar in winter and summer. 4. 4. Mass-specific conductance exhibits similar slope on body mass in winter and summer acclimatized animals with a greater intercept for summer animals. 5. 5. Critical gradient (Tb-Tc) exhibits similar slopes on body mass for winter and summer animals with a greater intercept for winter animals. 6. 6. Both large and small Arctic mammals can operate at similar metabolic levels in winter and summer as a result of seasonal pelage changes. © 1979.
AB - 1. 1. Respiratory frequency (f), tidal volume (Vt) and minute volume ( V ̇min) of eight species and oxygen consumption ( V ̇o2) of six species of summer acclimatized Arctic mammals were similar to that of temperate zone mammals. 2. 2. In small mammals, V ̇o2 increases at low Ta resulted in augmented V ̇min through increased f and Vt, while in large mammals f was relatively constant at low Ta. 3. 3. Except in weasels, basal metabolism was similar in winter and summer. 4. 4. Mass-specific conductance exhibits similar slope on body mass in winter and summer acclimatized animals with a greater intercept for summer animals. 5. 5. Critical gradient (Tb-Tc) exhibits similar slopes on body mass for winter and summer animals with a greater intercept for winter animals. 6. 6. Both large and small Arctic mammals can operate at similar metabolic levels in winter and summer as a result of seasonal pelage changes. © 1979.
U2 - 10.1016/0300-9629(79)90452-3
DO - 10.1016/0300-9629(79)90452-3
M3 - Article
VL - 64
SP - 331
EP - 341
JO - Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology
JF - Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology
SN - 1095-6433
IS - 3
ER -