Photoperiodic regulation in energy intake, thermogenesis and body mass in root voles (Microtus oeconomus)

Wang, Jianmei; Zhang, Yanming; Wang, Dehua

doi:10.1016/j.cbpa.2006.08.034

Cited by 18 publications

(10 citation statements)

References 48 publications

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“…Body mass, body length and epididymal fat mass decreased when the desert hamsters were acclimated to an SD photoperiod in the present study. Similar results are reported for wild‐living ‘winter’ desert hamsters (Bao et al ), commercial‐supplied SD photoperiod and cold‐acclimated hamsters (Jefimow ), and in most other small mammals (Wade & Bartness ; Wang et al ). This suggests that the decrease in body size and the mobilization of fat reserves are common strategies for small mammals to adapt to photoperiod changes.…”

Section: Discussionsupporting

confidence: 84%

“…Enhanced BAT thermogenesis is an important modification to maintain stable body temperature in winter in all three Phodopus species (Heldmaier et al ; Mercer et al ; Klingenspor et al ) and other wild rodents (Li & Wang ; Wang et al ; Zhang & Wang ). The extra energy expenditure for thermogenesis in the cold or under an SD photoperiod is mainly compensated by enhanced energy intake (Wang et al ; Zhang & Wang ). However, in a study by Wade and Bartness (), P. sungorus decreased energy intake and entered daily torpor when winter came.…”

Section: Discussionmentioning

confidence: 99%

“…The annual cycles of body mass and fat mass are associated with seasonal changes in circulating leptin concentration in small mammals (Rousseau et al ). Serum leptin concentrations decrease, accompanied by increased energy intake under winter conditions in many wild rodents (Wang et al ; Zhang & Wang ). However, short photoperiods induce decreases in serum leptin concentrations and energy intake in Djungarian hamsters (Klingenspor et al ), but increases in serum leptin and energy intake in collared lemmings [ Dicrostonyx torquatus (Pallas, 1778)], a small arctic rodent active in winter (Johnson et al ).…”

Section: Discussionmentioning

confidence: 99%

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Effects of short photoperiod on energy intake, thermogenesis, and reproduction in desert hamsters (Phodopus roborovskii)

Zhang

Zhao

Vasilieva

et al. 2015

Integrative Zoology

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Desert hamsters (Phodopus roborovskii) are the least known species in the genus Phodopus with respect to ecology and physiology, and deserve scientific attention, particularly because of their small body size. Here, the responses of energy metabolism and reproductive function to short photoperiods in desert hamsters were investigated. Male and female desert hamsters were acclimated to either long day (LD) (L:D 16:8 h) or short day (SD) photoperiods (L:D 8:16 h) for three months, and then the females were transferred back to an LD photoperiod for a further five months, while at the end of the SD acclimation the males were killed and measurements were taken for serum leptin as well as molecular markers for thermogenesis. We found that like the other two species from the genus Phodopus, the desert hamsters under SD decreased body mass, increased adaptive thermogenesis as indicated by elevated mitochondrial protein content and uncoupling protein-1 content in brown adipose tissue, and suppressed reproduction compared to those under LD. However, different from the other two species, desert hamsters did not show any differences in energy intake or serum leptin concentration between LD and SD. These data suggest that different species from the same genus respond in different ways to the environmental signals, and the desert adapted species are not as sensitive to change in photoperiod as the other two species.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effects of short photoperiod on energy intake, thermogenesis, and reproduction in desert hamsters (Phodopus roborovskii)

Zhang

Zhao

Vasilieva

et al. 2015

Integrative Zoology

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“…For example, positive correlations were reported for M. unguiculatus (Li & Wang, 2005) and E. miletus (Zhu et al, 2011a), while tree shrews show a negative correlation (Zhang et al, 2012), and no variation was found in Cricetulus barabensis (Zhao, 2011). Consequently, the role of leptin in regulating body mass and energy intake is largely unknown and complex in wild mammals (Król et al, 2006;Zhang & Wang, 2006;Król & Speakman, 2007). In our results, although the SD group of A. chevrieri showed slightly lower serum leptin levels compared with the LD group, no significant differences were found between the two groups.…”

Section: Roles Of Leptin During Photoperiod Acclimationcontrasting

confidence: 76%

The thermogenic and metabolic responses to photoperiod manipulations in Apodemus chevrieri

2013

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Environmental cues play important roles in the regulation of an animal's physiology and behavior. In the present study, we examined the effects of short photoperiod on body weight as well as on several physiological, hormonal, and biochemical measures indicative of thermogenic capacity to test our hypothesis that short photoperiod stimulates increases in thermogenesis without cold stress in Apodemus chevrieri. A. chevrieri were randomly assigned to either a long or short photoperiod for 4 weeks at constant temperature. The short photoperiod group of A. chevrieri showed increases in resting metabolic rate and nonshivering thermogenesis during the 4-week photoperiod acclimation. At the end, A. chevrieri at short photoperiod had lower body weights, higher levels of mitochondrial protein content and cytochrome C oxidase activity in liver and brown adipose tissues, and had higher levels of mitochondrial uncoupling protein-1 contents in brown adipose tissues. No difference in serum leptin levels were found between short and long photoperiod groups, but serum leptin levels were positively correlated with body mass and body fat mass, and negatively correlated with energy intake and uncoupling protein-1 content in brown adipose tissues, respectively. All results suggest that the short photoperiod may induce an increased thermogenesis capacity in A. chevrieri and that leptin is potentially involved in the photoperiod induced body mass regulation and thermogenesis in A. chevrieri.

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“…Body temperature in wild bush rats is significantly lower in winter than in summer (Glanville and Seebacher 2010). It is not known whether this reduction is due to lower T a s, or changes in photoperiod, food availability, or activity levels associated with winter, all of which could influence T b (Deveci and Egginton 2002; Li and Wang 2007;Pereira et al 2002;Wang et al 2006). We tested our hypotheses with a thermal acclimation treatment and an exercise treatment, allowing us to test directly whether T b is reduced by an interaction between reduced activity and chronic low T a s or by low T a s alone.…”

mentioning

confidence: 99%

Advantage to lower body temperatures for a small mammal (Rattus fuscipes) experiencing chronic cold

Glanville¹,

Seebacher²

2010

J Mammal

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Photoperiodic regulation in energy intake, thermogenesis and body mass in root voles (Microtus oeconomus)

Cited by 18 publications

References 48 publications

Effects of short photoperiod on energy intake, thermogenesis, and reproduction in desert hamsters (Phodopus roborovskii)

Effects of short photoperiod on energy intake, thermogenesis, and reproduction in desert hamsters (Phodopus roborovskii)

The thermogenic and metabolic responses to photoperiod manipulations in Apodemus chevrieri

Advantage to lower body temperatures for a small mammal (Rattus fuscipes) experiencing chronic cold

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