Evidence map›Paper›PMID 29921931›Full record

ArticleScientific reports2018

Experimental evidence that stripes do not cool zebras.

Gábor Horváth, Ádám Pereszlényi, Dénes Száz, András Barta, Imre M Jánosi, Balázs Gerics, Susanne Åkesson

Abstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Article
  2. Zebra stripes: the questions raised by the answers.Biological reviews of the Cambridge Philosophical Society · 2025
    Review
  3. Bio-Inspired Strategy for Radiation-Based Thermal Management and Utilization.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  4. Article
  5. Article
  6. Why don't horseflies land on zebras?The Journal of experimental biology · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Zebra stripes, tabanid biting flies and the aperture effect.Proceedings. Biological sciences · 2020
    Article
  11. Article
  12. Article
  13. Article
  14. 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

7 authors.

Gábor HorváthDepartment of Biological Physics, ELTE Eötvös Loránd University, H-1117, Budapest, Pázmány sétány 1, Hungary. gh@arago.elte.hu.
Ádám PereszlényiDepartment of Biological Physics, ELTE Eötvös Loránd University, H-1117, Budapest, Pázmány sétány 1, Hungary.
Dénes SzázDepartment of Biological Physics, ELTE Eötvös Loránd University, H-1117, Budapest, Pázmány sétány 1, Hungary.
András BartaEstrato Research and Development Ltd., H-1124, Németvölgyi út 91/c, Budapest, Hungary.
Imre M JánosiDepartment of Physics of Complex Systems, ELTE Eötvös Loránd University, H-1117, Budapest, Pázmány sétány 1, Hungary.ORCID 0000-0002-3705-5748
Balázs GericsDepartment of Anatomy and Histology, University of Veterinary Medicine, H-1078, Budapest, István utca 2, Hungary.
Susanne ÅkessonDepartment of Biology, Centre for Animal Movement Research, Lund University, Ecology Building, SE-223 62, Lund, Sweden.ORCID 0000-0001-9039-2180

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There are as many as 18 theories for the possible functions of the stripes of zebras, one of which is to cool the animal. We performed field experiments and thermographic measurements to investigate whether thermoregulation might work for zebra-striped bodies. A zebra body was modelled by water-filled metal barrels covered with horse, cattle and zebra hides and with various black, white, grey and striped patterns. The barrels were installed in the open air for four months while their core temperature was measured continuously. Using thermography, the temperature distributions of the barrel surfaces were compared to those of living zebras. The sunlit zebra-striped barrels reproduced well the surface temperature characteristics of sunlit zebras. We found that there were no significant core temperature differences between the striped and grey barrels, even on many hot days, independent of the air temperature and wind speed. The average core temperature of the barrels increased as follows: white cattle, grey cattle, real zebra, artificial zebra, grey horse, black cattle. Consequently, we demonstrate that zebra-striped coats do not keep the body cooler than grey coats challenging the hypothesis of a thermoregulatory role of zebra stripes.

Indexed as

AnimalsBody Temperature RegulationCattleCold TemperatureColorEquidaeHorsesSkinThermography

Identifiers

PMID29921931
PMCPMC6008466

What OpenQuestion holds

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LicenceCC BY
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.