Evidence map›Paper›PMID 29688543›Full record

ArticleMolecular biology and evolution2018

Natural Selection and Origin of a Melanistic Allele in North American Gray Wolves.

Rena M Schweizer, Arun Durvasula, Joel Smith, Samuel H Vohr, Daniel R Stahler, Marco Galaverni, Olaf Thalmann, Douglas W Smith, Ettore Randi, Elaine A Ostrander and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in Molecular biology and evolution, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
6.8field-weighted citation impact, top 3% 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

24 citing papers in PubMed, 62 citations in OpenAlex.

  1. A legacy of genetic entanglement with wolves shapes modern dogs.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. The impacts of European arrival on Australian dingoes.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Mating system of free-ranging domestic dogs and its consequences for dog evolution.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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  12. Correlational selection in the age of genomics.Nature ecology & evolution · 2021
    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

14 authors at 9 institutions in 4 countries.

Rena M SchweizerDivision of Biological Sciences, University of Montana, Missoula, MT.
Arun DurvasulaDepartment of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA.
Joel SmithDepartment of Ecology and Evolution, University of Chicago, Chicago, IL.
Samuel H VohrDepartment of Biomolecular Engineering, University of California, Santa Cruz, CA.
Daniel R StahlerYellowstone Center for Resources, National Park Service, Yellowstone National Park, WY.
Marco GalaverniConservation Area, World Wildlife Fund Italy, Rome, Italy.
Olaf ThalmannDepartment of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Poznan, Poland.
Douglas W SmithYellowstone Center for Resources, National Park Service, Yellowstone National Park, WY.
Ettore RandiDepartment of Biology, University of Bologna, Bologna, Italy.
Elaine A OstranderNational Human Genome Research Institute, National Institutes of Health, Bethesda, MD.
Richard E GreenDepartment of Biomolecular Engineering, University of California, Santa Cruz, CA.
Kirk E LohmuellerDepartment of Ecology and Evolutionary Biology, University of California, Los Angeles, CA.
John NovembreDepartment of Ecology and Evolution, University of Chicago, Chicago, IL.
Robert K WayneDepartment of Ecology and Evolutionary Biology, University of California, Los Angeles, CA.
University of California, Los Angeles · USUniversity of California, Santa Cruz · USUniversity of Chicago · USAalborg University · DKNational Human Genome Research Institute · USNational Park Service · USPoznan University of Medical Sciences · PLWWF Italia · ITYellowstone National Park

Funding

Comparative Mammalian GenomicsZIAHG200377 · NHGRI · NATIONAL HUMAN GENOME RESEARCH INSTITUTE · PI OSTRANDER, ELAINE · 2012 to 2025
$24.8M
Population genomics of the selective effects of new mutationsR35GM119856 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LOHMUELLER, KIRK · 2016 to 2025
$3.4M
Genome Sequencer FLXS10RR029668 · NCRR · UNIVERSITY OF CALIFORNIA BERKELEY · PI NGAI, JOHN J. · 2010 to 2010
$623k
Illumina Sequencer to Facilitate Functional Genomics at BerkeleyS10RR027303 · NCRR · UNIVERSITY OF CALIFORNIA BERKELEY · PI TAYLOR, JOHN W. · 2010 to 2010
$500k
NCRR NIH HHS S10 RR027303NCRR NIH HHS S10 RR029668NIGMS NIH HHS R35 GM119856
6 · The paper itself

Abstract

Pigmentation is often used to understand how natural selection affects genetic variation in wild populations since it can have a simple genetic basis, and can affect a variety of fitness-related traits (e.g., camouflage, thermoregulation, and sexual display). In gray wolves, the K locus, a β-defensin gene, causes black coat color via a dominantly inherited KB allele. The allele is derived from dog-wolf hybridization and is at high frequency in North American wolf populations. We designed a DNA capture array to probe the geographic origin, age, and number of introgression events of the KB allele in a panel of 331 wolves and 20 dogs. We found low diversity in KB, but not ancestral ky, wolf haplotypes consistent with a selective sweep of the black haplotype across North America. Further, North American wolf KB haplotypes are monophyletic, suggesting that a single adaptive introgression from dogs to wolves most likely occurred in the Northwest Territories or Yukon. We use a new analytical approach to date the origin of the KB allele in Yukon wolves to between 1,598 and 7,248 years ago, suggesting that introgression with early Native American dogs was the source. Using population genetic simulations, we show that the K locus is undergoing natural selection in four wolf populations. We find evidence for balancing selection, specifically in Yellowstone wolves, which could be a result of selection for enhanced immunity in response to distemper. With these data, we demonstrate how the spread of an adaptive variant may have occurred across a species' geographic range.

Indexed as

Selection, GeneticAnimalsbeta-DefensinsComputer SimulationDogsGene FrequencyGenetic VariationHair ColorHaplotypesHomozygoteNorth AmericaWolvesbeta-Defensins

Identifiers

PMID29688543
PMCPMC6455901
OpenAlexW2791089868

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.