Body temperature rhythms inMicrotusvoles during feeding, food deprivation, and winter acclimatization

The integrated ultradian organization of behavior and physiology in mice and the contribution of orexin to the ultradian patterning

“…In rats, the phase-linked ultradian episodic changes, including accessing the food container, occur even under food-deprived conditions (Blessing et al, 2012), suggesting that food intake is a part of integrated ultradian episodic patterns. Ultradian episodic increases in body temperature also occur in mice and voles during food deprivation (Gerkema and van der Leest, 1991, Nieminen et al, 2013. Our findings are similar to those reported previously in rats (Ootsuka et al, 2009, Blessing et al, 2012.…”

The integrated ultradian organization of behavior and physiology in mice and the contribution of orexin to the ultradian patterning

“…In rats, the phase-linked ultradian episodic changes, including accessing the food container, occur even under food-deprived conditions (Blessing et al, 2012), suggesting that food intake is a part of integrated ultradian episodic patterns. Ultradian episodic increases in body temperature also occur in mice and voles during food deprivation (Gerkema and van der Leest, 1991, Nieminen et al, 2013. Our findings are similar to those reported previously in rats (Ootsuka et al, 2009, Blessing et al, 2012.…”

Ambient Temperature Effects on the Spring and Autumn Somatic Growth Trajectory Show Plasticity in the Photoneuroendocrine Response Pathway in the Tundra Vole

“…Against this hypothesis, and in contrast to our earlier observations in M. arvalis (van Rosmalen et al, 2020(van Rosmalen et al, , 2021)), we observed no corresponding disinvestment in the gonadal axis in low T a spring animals; indeed, development of the gonadal axis in M. oeconomus appears to be entirely T a insensitive and only mildly sensitive to photoperiodic influences (see also van Rosmalen et al, 2020van Rosmalen et al, , 2021)). We have no data on core body temperature (T b ) or body composition (e.g., fat content) in this study but our previous study showed that T b was lower at a T a of 10 °C compared with 21 °C (van Rosmalen and Hut, 2021b) and another study showed that T b correlates with T a in tundra voles during the winter (Nieminen et al, 2013). The proportion of fat and de novo lipogenesis was not affected by photoperiod-induced body mass changes in Microtus agrestis (Król et al, 2005), Lasiopodomys brandtii (Li and Wang, 2005), and M. oeconomus (Wang et al, 2006), and an increased energy metabolism in winter suggests reliance on continuous food availability rather than fat accumulation in voles (Mustonen et al, 2002).…”

Food and temperature change photoperiodic responses in two vole species

“…Energetically challenged voles do not enter torpor, as observed in house mice (Hut et al, 2011), but average body temperature is decreased by ~0.5°C, yielding limited energy savings (Nieminen et al, 2013;van der Vinne et al, 2015;. This results in reduced reproductive investment, because all ingested energy is needed for maintaining organ function crucial to survive.…”

The integrated ultradian organization of behavior and physiology in mice and the contribution of orexin to the ultradian patterning

“…In rats, the phase-linked ultradian episodic changes, including accessing the food container, occur even under food-deprived conditions (Blessing et al, 2012), suggesting that food intake is a part of integrated ultradian episodic patterns. Ultradian episodic increases in body temperature also occur in mice and voles during food deprivation (Gerkema and van der Leest, 1991, Nieminen et al, 2013. Our findings are similar to those reported previously in rats (Ootsuka et al, 2009, Blessing et al, 2012.…”

Ambient Temperature Effects on the Spring and Autumn Somatic Growth Trajectory Show Plasticity in the Photoneuroendocrine Response Pathway in the Tundra Vole

“…Against this hypothesis, and in contrast to our earlier observations in M. arvalis (van Rosmalen et al, 2020(van Rosmalen et al, , 2021)), we observed no corresponding disinvestment in the gonadal axis in low T a spring animals; indeed, development of the gonadal axis in M. oeconomus appears to be entirely T a insensitive and only mildly sensitive to photoperiodic influences (see also van Rosmalen et al, 2020van Rosmalen et al, , 2021)). We have no data on core body temperature (T b ) or body composition (e.g., fat content) in this study but our previous study showed that T b was lower at a T a of 10 °C compared with 21 °C (van Rosmalen and Hut, 2021b) and another study showed that T b correlates with T a in tundra voles during the winter (Nieminen et al, 2013). The proportion of fat and de novo lipogenesis was not affected by photoperiod-induced body mass changes in Microtus agrestis (Król et al, 2005), Lasiopodomys brandtii (Li and Wang, 2005), and M. oeconomus (Wang et al, 2006), and an increased energy metabolism in winter suggests reliance on continuous food availability rather than fat accumulation in voles (Mustonen et al, 2002).…”

Food and temperature change photoperiodic responses in two vole species

“…Energetically challenged voles do not enter torpor, as observed in house mice (Hut et al, 2011), but average body temperature is decreased by ~0.5°C, yielding limited energy savings (Nieminen et al, 2013;van der Vinne et al, 2015;. This results in reduced reproductive investment, because all ingested energy is needed for maintaining organ function crucial to survive.…”

The integrated ultradian organization of behavior and physiology in mice and the contribution of orexin to the ultradian patterning

“…In rats, the phase-linked ultradian episodic changes, including accessing the food container, occur even under food-deprived conditions (Blessing et al, 2012), suggesting that food intake is a part of integrated ultradian episodic patterns. Ultradian episodic increases in body temperature also occur in mice and voles during food deprivation (Gerkema and van der Leest, 1991, Nieminen et al, 2013. Our findings are similar to those reported previously in rats (Ootsuka et al, 2009, Blessing et al, 2012.…”

Ambient Temperature Effects on the Spring and Autumn Somatic Growth Trajectory Show Plasticity in the Photoneuroendocrine Response Pathway in the Tundra Vole

“…Against this hypothesis, and in contrast to our earlier observations in M. arvalis (van Rosmalen et al, 2020(van Rosmalen et al, , 2021)), we observed no corresponding disinvestment in the gonadal axis in low T a spring animals; indeed, development of the gonadal axis in M. oeconomus appears to be entirely T a insensitive and only mildly sensitive to photoperiodic influences (see also van Rosmalen et al, 2020van Rosmalen et al, , 2021)). We have no data on core body temperature (T b ) or body composition (e.g., fat content) in this study but our previous study showed that T b was lower at a T a of 10 °C compared with 21 °C (van Rosmalen and Hut, 2021b) and another study showed that T b correlates with T a in tundra voles during the winter (Nieminen et al, 2013). The proportion of fat and de novo lipogenesis was not affected by photoperiod-induced body mass changes in Microtus agrestis (Król et al, 2005), Lasiopodomys brandtii (Li and Wang, 2005), and M. oeconomus (Wang et al, 2006), and an increased energy metabolism in winter suggests reliance on continuous food availability rather than fat accumulation in voles (Mustonen et al, 2002).…”

Food and temperature change photoperiodic responses in two vole species

“…Energetically challenged voles do not enter torpor, as observed in house mice (Hut et al, 2011), but average body temperature is decreased by ~0.5°C, yielding limited energy savings (Nieminen et al, 2013;van der Vinne et al, 2015;. This results in reduced reproductive investment, because all ingested energy is needed for maintaining organ function crucial to survive.…”