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Role of short photoperiod and cold exposure in regulating daily torpor in Djungarian hamsters

✍ Scribed by Jeffrey A. Elliott; Timothy J. Bartness; Bruce D. Goldman

Publisher
Springer
Year
1987
Tongue
English
Weight
982 KB
Volume
161
Category
Article
ISSN
0340-7594

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πŸ“œ SIMILAR VOLUMES

Daily torpor in the Djungarian hamster (
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1. The daily torpor was measured by oxygen uptake in Djungarian hamsters during adaptation to a short photoperiod (SP: 10L, 14D) at 20 degrees C. In these constant conditions the torpor presented metabolic characteristics and a daily time course independent of the duration of adaptations to SP. 2. T

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Cold exposure and food restriction facilitate physiological responses to short photoperiod in Djungarian hamsters (Phodopus sungorus)
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## Abstract We investigated the influence of ambient temperature (T~a~) and food availability on seasonal timing and extent of physiological responses to short photoperiod (SP), in particular daily torpor, in Djungarian hamsters (__Phodopus sungorus__). Exposure of hamsters to cold temperature (T~a

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In Phodopus sungorus spontaneous shallow daily torpor occurred only during winter. Frequency of torpor was not affected by low ambient temperature but the seasonal cueing seems primarily dependent on photoperiodic control. Maximum torpor frequency was found in January with 30% of all hamsters living