Diurnally Changing Effects of Locomotor Activity on Body Temperature in Laboratory Mice

Weinert, Dietmar; Waterhouse, Jim

doi:10.1016/s0031-9384(97)00546-5

Cited by 121 publications

(95 citation statements)

References 18 publications

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“…Recently, radiotelemetry was introduced to evaluate the staying time in bedding materials, which enabled automatic accurate collection of data [26,40]. In the first part of this study, we applied radiotelemetry to confirm the results showing that laboratory mice prefer cloth to two other materials, paper and wood shavings, which was shown in our previous study [24].…”

Section: Introductionsupporting

confidence: 54%

Color Preferences of Laboratory Mice for Bedding Materials: Evaluation Using Radiotelemetry

et al. 2012

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Preferences for different housing conditions in mice were evaluated by radiotelemetry. Male C57BL/6J and ICR mice were used. Preference for bedding materials in mice was compared among three materials, wood shavings (WS), paper (CF) and cloth (AG), using the length of stay in cages as a parameter. The results indicated that mice stayed longer in a cage with AG than in cages with other bedding materials. The present study confirmed our previous results and thereby indicated that radiotelemetry is a useful method to evaluate impacts of housing conditions on animal welfare. In the second part of this study, we used radiotelemetry to evaluate color preference of the mice for cloth bedding material. In C57BL/6J mice, staying time in black cloth was significantly longer than that in white cloth. In ICR mice, staying time in white cloth was significantly longer than that in black cloth. The mice preferred the environment with the same color as their fur, which may be important for animal welfare.

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Section: Introductionsupporting

confidence: 54%

Color Preferences of Laboratory Mice for Bedding Materials: Evaluation Using Radiotelemetry

et al. 2012

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“…For instance, social animals might reduce the steepness of the rest phase slope by huddling to share body heat during their rest phase (Fleming, 1980). The steepness of the active phase slope might be reduced by utilizing sunlight to warm the body (sun basking; Geiser et al, 2016) or utilizing the heat generated by physical activity for thermogenesis (Weinert and Waterhouse, 1998). Conversely, exposure to wind and rain steepens slope A′ significantly.…”

Section: Relationship Between Ambient Temperature and Energy Expenditurementioning

confidence: 99%

The flexible clock: predictive and reactive homeostasis, energy balance and the circadian regulation of sleep–wake timing

Riede

Vinne

Hut

2017

Journal of Experimental Biology

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The Darwinian fitness of mammals living in a rhythmic environment depends on endogenous daily (circadian) rhythms in behavior and physiology. Here, we discuss the mechanisms underlying the circadian regulation of physiology and behavior in mammals. We also review recent efforts to understand circadian flexibility, such as how the phase of activity and rest is altered depending on the encountered environment. We explain why shifting activity to the day is an adaptive strategy to cope with energetic challenges and show how this can reduce thermoregulatory costs. A framework is provided to make predictions about the optimal timing of activity and rest of non-model species for a wide range of habitats. This Review illustrates how the timing of daily rhythms is reciprocally linked to energy homeostasis, and it highlights the importance of this link in understanding daily rhythms in physiology and behavior.

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“…The mating duration (the period that males were left with the females) was a minimum of 8days (N=11/26 mice) but was longer when the females did not initially show signs they were pregnant. The actual day of pregnancy was retrospectively counted backwards from the day of parturition (day 0) following the numbering system used previously (Johnson et al, 2001a It is well established that physical activity can cause elevated body temperature (Brown and Refinetti, 1996;De Castro, 1978;Franken et al, 1992;Kent et al, 1991;Refinetti, 1994;Refinetti, 2003;Refinetti, 2010;Weinert and Waterhouse, 1998). In addition to measuring the overall mean body temperature, we were interested in the temperature at which the mice were physically active and that when they were at rest.…”

Section: Physical Activity and Body Temperaturementioning

confidence: 99%

“…Changes in physical activity contribute to variation in body temperature in rodents (Refinetti, 1994;Weinert and Waterhouse, 1998). Previous studies have suggested that body temperature decreases during late gestation.…”

Section: Introductionmentioning

confidence: 99%

Limits to sustained energy intake. XVI. Body temperature and physical activity of female mice during pregnancy

Gamo

Bernard

Mitchell

et al. 2013

Journal of Experimental Biology

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SUMMARYLactation is the most energy-demanding phase of mammalian reproduction, and lactation performance may be affected by events during pregnancy. For example, food intake may be limited in late pregnancy by competition for space in the abdomen between the alimentary tract and fetuses. Hence, females may need to compensate their energy budgets during pregnancy by reducing activity and lowering body temperature. We explored the relationships between energy intake, body mass, body temperature and physical activity throughout pregnancy in the MF1 mouse. Food intake and body mass of 26 females were recorded daily throughout pregnancy. Body temperature and physical activity were monitored every minute for 23h a day by implanted transmitters. Body temperature and physical activity declined as pregnancy advanced, while energy intake and body mass increased. Compared with a pre-mating baseline period, mice increased energy intake by 56% in late pregnancy. Although body temperature declined as pregnancy progressed, this served mostly to reverse an increase between baseline and early pregnancy. Reduced physical activity may compensate the energy budget of pregnant mice but body temperature changes do not. Over the last 3days of pregnancy, food intake declined. Individual variation in energy intake in the last phase of pregnancy was positively related to litter size at birth. As there was no association between the increase in body mass and the decline in intake, we suggest the decline was not caused by competition for abdominal space. These data suggest overall reproductive performance is probably not constrained by events during pregnancy. Supplementary material available online at

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Diurnally Changing Effects of Locomotor Activity on Body Temperature in Laboratory Mice

Cited by 121 publications

References 18 publications

Color Preferences of Laboratory Mice for Bedding Materials: Evaluation Using Radiotelemetry

Color Preferences of Laboratory Mice for Bedding Materials: Evaluation Using Radiotelemetry

The flexible clock: predictive and reactive homeostasis, energy balance and the circadian regulation of sleep–wake timing

Limits to sustained energy intake. XVI. Body temperature and physical activity of female mice during pregnancy

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