Seasonality of torpor and thermoregulation in three dasyurid marsupials

@article{Geiser2004SeasonalityOT,
  title={Seasonality of torpor and thermoregulation in three dasyurid marsupials},
  author={Fritz Geiser and R. V. Baudinette},
  journal={Journal of Comparative Physiology B},
  year={2004},
  volume={157},
  pages={335-344}
}
SummarySeasonal variation in the pattern of torpor and temperature regulation was investigated in the closely related arid zone dasyurid marsupialsSminthopsis crassicaudata (17 g),S. macroura (24 g), andDasyuroides byrnei (120 g). The tendency to enter torpor was greater, torpor commenced earlier, torpor duration was longer, and body temperatures (Tb) were lower inSminthopsis spp. than inD. byrnei. The minimum mass-specific rate of oxygen consumption ( $$\dot V_{O_2 } $$ ) of torpid animals was… 
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Highly Influential Citations
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Background Citations
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Methods Citations
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Results Citations
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96 Citations

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This study demonstrates that the pattern of torpor in D. cristicauda is similar to that of other dasyurid marsupials and provides further evidence that reproduction and Torpor in mammals are not always exclusive.
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Torpor in endotherms has only been observed in small species, suggesting that body mass determines the occurrence of torpor. The present study investigates the influence of body mass on the…
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Summer and winter torpor use by a free-ranging marsupial.
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TLDR
The findings suggest that although overlooked in the past, basking may be widely distributed amongst heterothermic mammals and the energetic benefits from torpor use in wild animals may currently be underestimated.
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TLDR
This study suggests that in winter, the smaller dunnarts can remain active only during the warmer first half of the night and energy-saving torpor becomes part of their daily routine, while the larger kowaries are less affected by cold winter nights and can maintain high night-time activity levels and commence reproduction already in winter.
Daily torpor and thermoregulation in antechinus (Marsupialia): influence of body mass, season, development, reproduction, and sex
  • F. Geiser
  • Environmental Science, Biology
    Oecologia
  • 2004
TLDR
The results suggest that the influence of body mass on torpor in these Antechinus species is stronger than that of season.
Torpor Patterns in Desert Hedgehogs (Paraechinus aethiopicus) Represent Another New Point along a Thermoregulatory Continuum
Documenting variation in thermoregulatory patterns across phylogenetically and geographically diverse taxa is key to understanding the evolution of endothermy and heterothermy in birds and mammals.…
Development of thermoregulation and torpor in a marsupial: energetic and evolutionary implications
TLDR
It is shown that while torpor can substantially reduce energy expenditure during development of endotherms and hence is likely important for survival during energy bottlenecks, it also may enhance somatic growth when food is limited, and hypothesize that torpor during the development in endotherm is far more widespread than is currently appreciated.
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