Evidence map›Paper›PMID 32415098›Full record

ArticleNature communications2020

Exposure to UV radiance predicts repeated evolution of concealed black skin in birds.

Michaël P J Nicolaï, Matthew D Shawkey, Sara Porchetta, Ruben Claus, Liliana D'Alba

Abstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

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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

5 authors.

Michaël P J NicolaïBiology Department, Evolution and Optics of Nanostructures Group, Ghent University, Ledeganckstraat 35, 9000, Ghent, Belgium. michael.nicolai@ugent.be.ORCID http://orcid.org/0000-0002-9570-0311
Matthew D ShawkeyBiology Department, Evolution and Optics of Nanostructures Group, Ghent University, Ledeganckstraat 35, 9000, Ghent, Belgium.ORCID http://orcid.org/0000-0002-5131-8209
Sara PorchettaDepartment of Earth and Environmental Sciences, KULeuven, Leuven, Belgium.
Ruben ClausBiology Department, Evolution and Optics of Nanostructures Group, Ghent University, Ledeganckstraat 35, 9000, Ghent, Belgium.
Liliana D'AlbaBiology Department, Evolution and Optics of Nanostructures Group, Ghent University, Ledeganckstraat 35, 9000, Ghent, Belgium.ORCID http://orcid.org/0000-0002-2478-3455

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Plumage is among the most well-studied components of integumentary colouration. However, plumage conceals most skin in birds, and as a result the presence, evolution and function of skin colour remains unexplored. Here we show, using a database of 2259 species encompassing >99% of bird genera, that melanin-rich, black skin is found in a small but sizeable percentage (~5%) of birds, and that it evolved over 100 times. The spatial distribution of black skin follows Gloger's rule, which states that pigmentation of endothermic animals increases towards the equator. Furthermore, most black-skinned birds inhabit high irradiation regions, and tend to be bald and/or have white feathers. Thus, taken together, our results suggest that melanin-rich, black skin helps to protect birds against ultraviolet irradiation. More generally, our results illustrate that feathered skin colour varies taxonomically, ontogenetically and temporally, providing an additional dimension for avian colour research.

Indexed as

Ultraviolet RaysAnimalsBiological EvolutionBirdsDatabases, FactualFeathersFemaleGeographyMaleMelaninsPhylogenySkinSkin PigmentationSpecies SpecificityMelanins

Identifiers

PMID32415098
PMCPMC7229023

What OpenQuestion holds

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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.