Evidence map›Paper›PMID 19387653›Full record

SynthesisJournal of comparative physiology. B, Biochemical, systemic, and environmental physiology2009

Activity affects intraspecific body-size scaling of metabolic rate in ectothermic animals.

Douglas Stewart Glazier

Abstract readComparative StudyMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
–field-weighted citation impact
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

34 citing papers in PubMed.

  1. Article
  2. Article
  3. Mass scaling of standard metabolic rate within and among individuals in Western mosquitofish (Gambusia affinis).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2025
    Article
  4. Article
  5. Article
  6. Metabolic scaling as an emergent outcome of variation in metabolic rate.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
  7. Interactive effects of intrinsic and extrinsic factors on metabolic rate.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Comparison of metabolic scaling between triploid and diploid common carp.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2021
    Article
  17. Aerobic and anaerobic metabolic scaling in the burrowing freshwater crayfish Parastacus pugnax.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2021
    Article
  18. Article
  19. Activity alters how temperature influences intraspecific metabolic scaling: testing the metabolic-level boundaries hypothesis.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2020
    Article
  20. 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

1 author.

Douglas Stewart GlazierDepartment of Biology, Juniata College, Huntingdon, PA, 16652, USA. glazier@juniata.edu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metabolic rate is commonly thought to scale with body mass (M) to the 3/4 power. However, the metabolic scaling exponent (b) may vary with activity state, as has been shown chiefly for interspecific relationships. Here I use a meta-analysis of literature data to test whether b changes with activity level within species of ectothermic animals. Data for 19 species show that b is usually higher during active exercise (mean +/- 95% confidence limits = 0.918 +/- 0.038) than during rest (0.768 +/- 0.069). This significant upward shift in b to near 1 is consistent with the metabolic level boundaries hypothesis, which predicts that maximal metabolic rate during exercise should be chiefly influenced by volume-related muscular power production (scaling as M (1)). This dependence of b on activity level does not appear to be a simple temperature effect because body temperature in ectotherms changes very little during exercise.

Indexed as

AnimalsAnuraBasal MetabolismBody Temperature RegulationBody WeightConfidence IntervalsCrustaceaEnergy MetabolismEnvironmentFishesLeast-Squares AnalysisModels, BiologicalOxygen ConsumptionPhysical ExertionReptilesVertebrates

Identifiers

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.