Evidence map›Paper›PMID 17160415›Full record

ArticleDie Naturwissenschaften2007

Photoperiod affects daily torpor and tissue fatty acid composition in deer mice.

Fritz Geiser, B M McAllan, G J Kenagy, Sara M Hiebert

Abstract read
PubMed Publisher
In one paragraph

Article in Die Naturwissenschaften, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.0field-weighted citation impact, top 25% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 46 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Predictive and reactive changes in antioxidant defence system in a heterothermic rodent.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2020
    Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. The influence of natural photoperiod on seasonal torpor expression of two opportunistic marsupial hibernators.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2017
    Article
  11. Article
  12. Article
  13. Article
  14. Feeding into old age: long-term effects of dietary fatty acid supplementation on tissue composition and life span in mice.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2011
    Article
  15. Endocrine mechanisms of seasonal adaptation in small mammals: from early results to present understanding.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2010
    Review
  16. Article
  17. Gut hormones in relation to body mass and torpor pattern changes during food restriction and re-feeding in the gray mouse lemur.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2009
    Article
  18. Loss of prokineticin receptor 2 signaling predisposes mice to torpor.American journal of physiology. Regulatory, integrative and comparative physiology · 2008
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 4 institutions in 2 countries.

Fritz GeiserCentre for Behavioural and Physiological Ecology, Zoology, University of New England, Armidale, NSW 2351, Australia. fgeiser@une.edu.au
B M McAllan
G J Kenagy
Sara M Hiebert
Swarthmore College · USUniversity of New England · AUUniversity of Sydney · AUUniversity of Washington · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Photoperiod and dietary lipids both influence thermal physiology and the pattern of torpor of heterothermic mammals. The aim of the present study was to test the hypothesis that photoperiod-induced physiological changes are linked to differences in tissue fatty acid composition of deer mice, Peromyscus maniculatus ( approximately 18-g body mass). Deer mice were acclimated for >8 weeks to one of three photoperiods (LD, light/dark): LD 8:16 (short photoperiod), LD 12:12 (equinox photoperiod), and LD 16:8 (long photoperiod). Deer mice under short and equinox photoperiods showed a greater occurrence of torpor than those under long photoperiods (71, 70, and 14%, respectively). The duration of torpor bouts was longest in deer mice under short photoperiod (9.3 +/- 2.6 h), intermediate under equinox photoperiod (5.1 +/- 0.3 h), and shortest under long photoperiod (3.7 +/- 0.6 h). Physiological differences in torpor use were associated with significant alterations of fatty acid composition in approximately 50% of the major fatty acids from leg muscle total lipids, whereas white adipose tissue fatty acid composition showed fewer changes. Our results provide the first evidence that physiological changes due to photoperiod exposure do result in changes in lipid composition in the muscle tissue of deer mice and suggest that these may play a role in survival of low body temperature and metabolic rate during torpor, thus, enhancing favourable energy balance over the course of the winter.

Indexed as

PhotoperiodActivity CyclesAnimalsBehavior, AnimalFatty AcidsPeromyscusWashingtonFatty Acids

Identifiers

PMID17160415
OpenAlexW1993012254

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.