ArticleDie Naturwissenschaften2014
Torpor in free-ranging antechinus: does it increase fitness?
Article in Die Naturwissenschaften, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 22 citations in OpenAlex.
- Contrasting Torpor Use by Reproductive Male Common Noctule Bats in the Laboratory and in the Field.Integrative and comparative biology · 2023Article
- Responding to the weather: energy budgeting by a small mammal in the wild.Current zoology · 2020Article
- Growing Up in a Changing Climate: How Temperature Affects the Development of Morphological, Behavioral and Physiological Traits of a Marsupial Mammal.Frontiers in physiology · 2020Article
- Thermal physiology and activity in relation to reproductive status and sex in a free-ranging semelparous marsupial.Conservation physiology · 2019Article
- Individual variation of daily torpor and body mass change during winter in the large Japanese field mouse (Apodemus speciosus).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2018Article
- Post-fire recovery of torpor and activity patterns of a small mammal.Biology letters · 2017Article
- Torpor and basking after a severe wildfire: mammalian survival strategies in a scorched landscape.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2017Article
- Post-wildfire physiological ecology of an Australian microbat.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2016Article
- Marsupials don't adjust their thermal energetics for life in an alpine environment.Temperature (Austin, Tex.) · 2016Article
- The importance of mammalian torpor for survival in a post-fire landscape.Biology letters · 2015Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Antechinus are small, insectivorous, heterothermic marsupial mammals that use torpor from late summer to early winter and reproduce once a year in late winter/early spring. Males die after mating, most females produce only a single litter, but some survive a second winter and produce another litter. As it is not known how these females manage to survive the second winter after the energetically demanding reproductive period and then reproduce a second time, we aimed to provide the first data on thermal biology of free-ranging antechinus by using temperature telemetry. Male Antechinus stuartii and Antechinus flavipes rarely entered torpor in autumn/early winter in the wild, expressing only shallow bouts of <2 h. Female A. stuartii used torpor extensively, employing bouts up to 16.7 h with body temperatures as low as 17.8 °C. Interestingly, although first and second year females used similar torpor patterns, torpor occurrence was almost twofold in second year (93 % of days) than first year females (49 %), and the proportion of the overall monitoring period animals spent torpid was 3.2-fold longer in the former with a corresponding shorter activity period. Our study suggests that intensive use of torpor is crucial for second year females for autumn and winter survival and production of a second litter. We provide the first evidence of an age-related pattern in daily torpor expression in free-ranging mammals and show that torpor use is a complex process that is affected not only by the current energy availability and thermal conditions but also by the reproductive history and age of individuals.
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