Evidence map›Paper›PMID 26668374›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Global divergence of the human follicle mite Demodex folliculorum: Persistent associations between host ancestry and mite lineages.

Michael F Palopoli, Daniel J Fergus, Samuel Minot, Dorothy T Pei, W Brian Simison, Iria Fernandez-Silva, Megan S Thoemmes, Robert R Dunn, Michelle Trautwein

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

26 citing papers in PubMed, 59 citations in OpenAlex.

  1. First Detection of Human- and Dog-AssociatedPathogens (Basel, Switzerland) · 2026
    Article
  2. Article
  3. Pathogens (Basel, Switzerland) · 2025
    Article
  4. Demodex and the eye - A review.Indian journal of ophthalmology · 2025
    Review
  5. Reducing ocularFrontiers in allergy · 2025
    Article
  6. Epidemiological survey of two morphotypes ofParasite epidemiology and control · 2024
    Article
  7. Article
  8. A new species ofInternational journal for parasitology. Parasites and wildlife · 2024
    Article
  9. Review
  10. Article
  11. The Acari Hypothesis, III: Atopic Dermatitis.Pathogens (Basel, Switzerland) · 2022
    Article
  12. Human follicular mites: Ectoparasites becoming symbionts.Molecular biology and evolution · 2022
    Article
  13. Treatment of ocularAmerican journal of ophthalmology case reports · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. 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

9 authors at 6 institutions in 3 countries.

Michael F PalopoliDepartment of Biology, Bowdoin College, Brunswick, ME 04011; mpalopol@bowdoin.edu.
Daniel J FergusNorth Carolina Museum of Natural Sciences, Raleigh, NC 27601; Department of Applied Ecology, North Carolina State University, Raleigh, NC 27695;
Samuel MinotDepartment of Biology, Bowdoin College, Brunswick, ME 04011;
Dorothy T PeiDepartment of Biology, Bowdoin College, Brunswick, ME 04011;
W Brian SimisonCenter for Comparative Genomics, California Academy of Sciences, San Francisco, CA 94118;
Iria Fernandez-SilvaCenter for Comparative Genomics, California Academy of Sciences, San Francisco, CA 94118; Department of Biochemistry, Genetics and Immunology, University of Vigo, 36310 Vigo, Spain;
Megan S ThoemmesDepartment of Applied Ecology, North Carolina State University, Raleigh, NC 27695; Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC 27695;
Robert R DunnDepartment of Applied Ecology, North Carolina State University, Raleigh, NC 27695; Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, 2100 Copenhagen Ø, Denmark.
Michelle TrautweinCenter for Comparative Genomics, California Academy of Sciences, San Francisco, CA 94118;
Bowdoin College · USCalifornia Academy of Sciences · USNatural History Museum Aarhus · DKNorth Carolina Museum of Natural Sciences · USNorth Carolina State University · USUniversidade de Vigo · ES

Funding

The Maine Biomedical Research Network (INBRE)P20GM103423 · NIGMS · MOUNT DESERT ISLAND BIOLOGICAL LAB · PI Dustin Lynn Updike · 2012 to 2026
$60.0M
WNT SIGNALING IN THE DEVELOPING GASTROINTESTINAL TRACTP20RR016463 · NCRR · MOUNT DESERT ISLAND BIOLOGICAL LAB · PI WRAY, CHRISTOPHER C · 2001 to 2011
$41.0M
Howard Hughes Medical InstituteNCRR NIH HHS 5P20RR016463-12NCRR NIH HHS P20 RR016463NIGMS NIH HHS 8 P20 GM103423-12NIGMS NIH HHS P20 GM103423
6 · The paper itself

Abstract

Microscopic mites of the genus Demodex live within the hair follicles of mammals and are ubiquitous symbionts of humans, but little molecular work has been done to understand their genetic diversity or transmission. Here we sampled mite DNA from 70 human hosts of diverse geographic ancestries and analyzed 241 sequences from the mitochondrial genome of the species Demodex folliculorum. Phylogenetic analyses recovered multiple deep lineages including a globally distributed lineage common among hosts of European ancestry and three lineages that primarily include hosts of Asian, African, and Latin American ancestry. To a great extent, the ancestral geography of hosts predicted the lineages of mites found on them; 27% of the total molecular variance segregated according to the regional ancestries of hosts. We found that D. folliculorum populations are stable on an individual over the course of years and that some Asian and African American hosts maintain specific mite lineages over the course of years or generations outside their geographic region of birth or ancestry. D. folliculorum haplotypes were much more likely to be shared within families and between spouses than between unrelated individuals, indicating that transmission requires close contact. Dating analyses indicated that D. folliculorum origins may predate modern humans. Overall, D. folliculorum evolution reflects ancient human population divergences, is consistent with an out-of-Africa dispersal hypothesis, and presents an excellent model system for further understanding the history of human movement.

Indexed as

Genetic VariationAfricaAnimalsAsiaAustraliaDNA, MitochondrialElectron Transport Complex IVEuropeGenome, MitochondrialGeographyHair FollicleHaplotypesHost SpecificityHumansLatin AmericaMitesDNA, MitochondrialElectron Transport Complex IVcoevolutionDemodexphylogeographysymbiosis

Identifiers

PMID26668374
PMCPMC4703014
OpenAlexW2220086339

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.