Evidence map›Paper›PMID 27976701›Full record

ArticleScientific reports2016

Porphyrins produce uniquely ephemeral animal colouration: a possible signal of virginity.

Ismael Galván, Pablo R Camarero, Rafael Mateo, Juan J Negro

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

16 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
  2. Bird Community Colours Across Different Types of Habitat.Animals : an open access journal from MDPI · 2026
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  6. Structural color in the bacterial domain: The ecogenomics of a 2-dimensional optical phenotype.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
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  14. Recent advances in amniote palaeocolour reconstruction and a framework for future research.Biological reviews of the Cambridge Philosophical Society · 2020
    Article
  15. Article
  16. 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 2 institutions in 1 country.

Ismael GalvánDepartamento de Ecología Evolutiva, Estación Biológica de Doñana - CSIC, 41092 Sevilla, Spain.
Pablo R CamareroInstituto de Investigación en Recursos Cinegéticos - CSIC-UCLM-JCCM, 13005 Ciudad Real, Spain.
Rafael MateoInstituto de Investigación en Recursos Cinegéticos - CSIC-UCLM-JCCM, 13005 Ciudad Real, Spain.
Juan J NegroDepartamento de Ecología Evolutiva, Estación Biológica de Doñana - CSIC, 41092 Sevilla, Spain.
Estación Biológica de Doñana · ESInstituto de Investigación en Recursos Cinegéticos · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Colours that underlie animal pigmentation can either be permanent or renewable in the short term. Here we describe the discovery of a conspicuous salmon-pink colouration in the base of bustard feathers and down that has never been reported because of its extraordinarily brief expression. HPLC analyses indicated that its constituent pigments are coproporphyrin III and protoporphyrin IX, which are prone to photodegradation. Accordingly, an experimental exposure of feathers of three bustard species to sunlight produced a rapid disappearance of the salmon-pink colouration, together with a marked decrease in reflectance around 670 nm coinciding with the absorption of porphyrin photoproducts. The disappearance of the salmon-pink colouration can occur in a period as short as 12 min, likely making it the most ephemeral colour phenotype in any extant bird. The presence of this colour trait in males performing sexual displays may thus indicate to females a high probability that the males were performing their first displays and would engage in their first copulations in the breeding season. In dominant males, sperm quality decreases over successive copulations, thus porphyrin-based colouration may evolve as a signal of virginity that allows females to maximize their fitness in lek mating systems.

Indexed as

Sexual AbstinenceAnimalsBirdsChromatography, High Pressure LiquidColorFeathersFemaleMaleMating Preference, AnimalPhenotypePigmentationPorphyrinsSunlightPorphyrins

Identifiers

PMID27976701
PMCPMC5156940
OpenAlexW2566527129

What OpenQuestion holds

Textmetadata
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.