Physiological studies on the rock pocket mouse, Perognathus intermedius

A comparison of temperature regulation in neonatal and adult hispid cotton rats, Sigmodon hispidus texianus, from southern Texas and northern Kansas

“…Similar reductions , approximately 15 %) in basal metabolism have been shown in various small rodents inhabiting xeric regions: Neotoma fuscipes (Lee, 1963), Dipodomys merriam: and Pi podomys agi lis (Carpenter, 1966), Liomys irroratus (Hudson and Rummel, 1966), and Pipodomys deserti (McNab, 1979). Even larger reductions (20-50 %) in basal metabolism of xeric dwelling rodents h=Ye been reported for Perognathus (Tucker, 1965;Bradley et al, 1975),…”

A comparison of temperature regulation in neonatal and adult hispid cotton rats, Sigmodon hispidus texianus, from southern Texas and northern Kansas

“…Similar reductions , approximately 15 %) in basal metabolism have been shown in various small rodents inhabiting xeric regions: Neotoma fuscipes (Lee, 1963), Dipodomys merriam: and Pi podomys agi lis (Carpenter, 1966), Liomys irroratus (Hudson and Rummel, 1966), and Pipodomys deserti (McNab, 1979). Even larger reductions (20-50 %) in basal metabolism of xeric dwelling rodents h=Ye been reported for Perognathus (Tucker, 1965;Bradley et al, 1975),…”

Estimating the influence of the thermal environment on activity patterns of the desert woodrat (Neotoma lepida) using temperature chronologies

“…To illustrate these high water requirements, at a temperature of 39°C, Nelson and Yousef (1979) recorded evaporative water losses over 5.0 mg H 2 O/mL O 2 in N. lepida. These values are considerably higher than those of other rodent species (Schmidt-Nielsen and Schmidt-Nielsen 1950;Hudson 1962;Tucker 1965;Breyen et al 1973;Bradley et al 1975). On multiple occasions at our study site, we observed heat-stressed N. lepida profusely coating the anterior portions of their body with saliva.…”

Hibernating Little Pocket Mice Show Few Seasonal Changes in Bone Properties

“…Both small and large hibernating mammals have demonstrated abilities to prevent disuse osteoporosis, but vary in how their properties are affected (Whalen et al, ; Steinberg et al, ; McGee‐Lawrence et al, ; McGee et al, ; Utz et al, ; McGee‐Lawrence et al, ; Doherty et al, ; Wojda et al, ; McGee‐Lawrence et al, ; Doherty et al, ; Wojda et al, ). In addition to entering numerous cyclical torpor bouts interrupted by brief interbout arousals during the winter hibernation period, pocket mice are also able to enter torpor in the summer when challenged with extreme hot temperatures and food deficiency, even without cached food stores or excessive fat accumulation (Bartholomew and Cade, ; Bradley et al, ). This adaptation makes them appealing subjects to further investigate the impacts disuse has on skeletal properties in small hibernators.…”

A comparison of temperature regulation in neonatal and adult hispid cotton rats, Sigmodon hispidus texianus, from southern Texas and northern Kansas

“…Similar reductions , approximately 15 %) in basal metabolism have been shown in various small rodents inhabiting xeric regions: Neotoma fuscipes (Lee, 1963), Dipodomys merriam: and Pi podomys agi lis (Carpenter, 1966), Liomys irroratus (Hudson and Rummel, 1966), and Pipodomys deserti (McNab, 1979). Even larger reductions (20-50 %) in basal metabolism of xeric dwelling rodents h=Ye been reported for Perognathus (Tucker, 1965;Bradley et al, 1975),…”

Estimating the influence of the thermal environment on activity patterns of the desert woodrat (Neotoma lepida) using temperature chronologies

“…To illustrate these high water requirements, at a temperature of 39°C, Nelson and Yousef (1979) recorded evaporative water losses over 5.0 mg H 2 O/mL O 2 in N. lepida. These values are considerably higher than those of other rodent species (Schmidt-Nielsen and Schmidt-Nielsen 1950;Hudson 1962;Tucker 1965;Breyen et al 1973;Bradley et al 1975). On multiple occasions at our study site, we observed heat-stressed N. lepida profusely coating the anterior portions of their body with saliva.…”

Hibernating Little Pocket Mice Show Few Seasonal Changes in Bone Properties

“…Both small and large hibernating mammals have demonstrated abilities to prevent disuse osteoporosis, but vary in how their properties are affected (Whalen et al, ; Steinberg et al, ; McGee‐Lawrence et al, ; McGee et al, ; Utz et al, ; McGee‐Lawrence et al, ; Doherty et al, ; Wojda et al, ; McGee‐Lawrence et al, ; Doherty et al, ; Wojda et al, ). In addition to entering numerous cyclical torpor bouts interrupted by brief interbout arousals during the winter hibernation period, pocket mice are also able to enter torpor in the summer when challenged with extreme hot temperatures and food deficiency, even without cached food stores or excessive fat accumulation (Bartholomew and Cade, ; Bradley et al, ). This adaptation makes them appealing subjects to further investigate the impacts disuse has on skeletal properties in small hibernators.…”

A comparison of temperature regulation in neonatal and adult hispid cotton rats, Sigmodon hispidus texianus, from southern Texas and northern Kansas

“…Similar reductions , approximately 15 %) in basal metabolism have been shown in various small rodents inhabiting xeric regions: Neotoma fuscipes (Lee, 1963), Dipodomys merriam: and Pi podomys agi lis (Carpenter, 1966), Liomys irroratus (Hudson and Rummel, 1966), and Pipodomys deserti (McNab, 1979). Even larger reductions (20-50 %) in basal metabolism of xeric dwelling rodents h=Ye been reported for Perognathus (Tucker, 1965;Bradley et al, 1975),…”

Estimating the influence of the thermal environment on activity patterns of the desert woodrat (Neotoma lepida) using temperature chronologies

“…To illustrate these high water requirements, at a temperature of 39°C, Nelson and Yousef (1979) recorded evaporative water losses over 5.0 mg H 2 O/mL O 2 in N. lepida. These values are considerably higher than those of other rodent species (Schmidt-Nielsen and Schmidt-Nielsen 1950;Hudson 1962;Tucker 1965;Breyen et al 1973;Bradley et al 1975). On multiple occasions at our study site, we observed heat-stressed N. lepida profusely coating the anterior portions of their body with saliva.…”

Hibernating Little Pocket Mice Show Few Seasonal Changes in Bone Properties

“…Both small and large hibernating mammals have demonstrated abilities to prevent disuse osteoporosis, but vary in how their properties are affected (Whalen et al, ; Steinberg et al, ; McGee‐Lawrence et al, ; McGee et al, ; Utz et al, ; McGee‐Lawrence et al, ; Doherty et al, ; Wojda et al, ; McGee‐Lawrence et al, ; Doherty et al, ; Wojda et al, ). In addition to entering numerous cyclical torpor bouts interrupted by brief interbout arousals during the winter hibernation period, pocket mice are also able to enter torpor in the summer when challenged with extreme hot temperatures and food deficiency, even without cached food stores or excessive fat accumulation (Bartholomew and Cade, ; Bradley et al, ). This adaptation makes them appealing subjects to further investigate the impacts disuse has on skeletal properties in small hibernators.…”