Pronounced differences in heart rate and metabolism distinguish daily torpor and short-term hibernation in two bat species.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
15 12 2022
15 12 2022
Historique:
received:
31
05
2022
accepted:
01
12
2022
entrez:
15
12
2022
pubmed:
16
12
2022
medline:
20
12
2022
Statut:
epublish
Résumé
Torpor, and its differential expression, is essential to the survival of many mammals and birds. Physiological characteristics of torpor appear to vary between those species that express strict daily heterothermy and those capable of multiday hibernation, but comparisons are complicated by the temperature-dependence of variables. Previous reviews have compared these different torpor strategies by measuring the depth and duration of torpor in multiple species. However, direct comparison of multiple physiological parameters under similar thermal conditions are lacking. Here, we quantified three physiological variables; body temperature, metabolic rate (MR) and heart rate (HR) of two small heterothermic bats (daily heterotherm Syconycteris australis, and hibernator Nyctophilus gouldi) under comparable thermal conditions and torpor bout durations. When normothermic and resting both MR and HR were similar for the two species. However, during torpor the minimum HR was more than fivefold higher, and minimum MR was 6.5-fold higher for the daily heterotherm than for the hibernator at the same subcutaneous T
Identifiants
pubmed: 36522368
doi: 10.1038/s41598-022-25590-8
pii: 10.1038/s41598-022-25590-8
pmc: PMC9755216
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
21721Informations de copyright
© 2022. The Author(s).
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