Evidence map›Paper›PMID 32601293›Full record

ArticleScientific reports2020

Declining genetic diversity of European honeybees along the twentieth century.

Gonçalo Espregueira Themudo, Alba Rey-Iglesia, Lucía Robles Tascón, Annette Bruun Jensen, Rute R da Fonseca, Paula F Campos

Abstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

  1. Article
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  7. The Evolution of Bees: Insights from 'Omic Studies.Genome biology and evolution · 2026
    Review
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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

6 authors.

Gonçalo Espregueira ThemudoCIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.ORCID http://orcid.org/0000-0002-5019-9439
Alba Rey-Iglesia *CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.ORCID http://orcid.org/0000-0002-3768-9185
Lucía Robles Tascón *The Bioinformatics Centre, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
Annette Bruun JensenDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.ORCID http://orcid.org/0000-0002-2044-2274
Rute R da FonsecaThe Bioinformatics Centre, Department of Biology, University of Copenhagen, Copenhagen, Denmark.ORCID http://orcid.org/0000-0002-2805-4698
Paula F CamposCIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal. campos.f.paula@gmail.com.ORCID http://orcid.org/0000-0003-1285-4671

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The European honeybee (Apis mellifera) is a key pollinator and has in the last decades suffered significant population decline. A combination of factors, including decrease in genetic diversity and introduction of Varroa mites, have been suggested to be responsible for these losses, but no definitive cause has yet been appointed. In Europe not only have wild colonies been severely affected, but managed hives have had a massive decline in numbers. To test the hypothesis that honeybees' genetic diversity has decreased in the recent past, we used reduced representation genome sequencing of 40 historical honeybee specimens collected in Natural History collections across Europe and compared them to genomic data from 40 individuals from extant populations (collected post 2006). Our results are consistent with the existence of five evolutionary lineages as previously described, and show a decrease in genetic diversity between historical and extant individuals of the same lineage, as well as high levels of admixture in historical specimens. Our data confirm that a loss of genetic diversity has occurred during the last century, potentially increasing honeybees' vulnerability to contemporary ecological and anthropogenic stressors.

Indexed as

AnimalsBeesEuropeGene FlowGenetic Variation

Identifiers

PMID32601293
PMCPMC7324561

What OpenQuestion holds

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Registered trials

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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.