Cited by 104Genetic and phenotypic traits in livestockHuman-Animal Interaction StudiesGenetic diversity and population structure

Demographically-based evaluation of genomic regions under selection in domestic dogs

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Freedman, Adam H., Schweizer, Rena M., Ortega-Del Vecchyo, Diego, Han, Eunjung, Davis, Brian W., Gronau, Ilan, Silva, Pedro M., Galaverni, Marco +22 more·2016·PLoS Genetics

Abstract

Controlling for background demographic effects is important for accurately identifying loci that have recently undergone positive selection. To date, the effects of demography have not yet been explicitly considered when identifying loci under selection during dog domestication. To investigate positive selection on the dog lineage early in the domestication, we examined patterns of polymorphism in six canid genomes that were previously used to infer a demographic model of dog domestication. Using an inferred demographic model, we computed false discovery rates (FDR) and identified 349 outlier regions consistent with positive selection at a low FDR. The signals in the top 100 regions were frequently centered on candidate genes related to brain function and behavior, including LHFPL3, CADM2, GRIK3, SH3GL2, MBP, PDE7B, NTAN1, and GLRA1. These regions contained significant enrichments in behavioral ontology categories. The 3rd top hit, CCRN4L, plays a major role in lipid metabolism, that is supported by additional metabolism related candidates revealed in our scan, including SCP2D1 and PDXC1. Comparing our method to an empirical outlier approach that does not directly account for demography, we found only modest overlaps between the two methods, with 60% of empirical outliers having no overlap with our demography-based outlier detection approach. Demography-aware approaches have lower-rates of false discovery. Our top candidates for selection, in addition to expanding the set of neurobehavioral candidate genes, include genes related to lipid metabolism, suggesting a dietary target of selection that was important during the period when proto-dogs hunted and fed alongside hunter-gatherers.

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  • These results are in line with claims in other studies on domestication, where categories like 'neurological process' frequently stand out strongly in gene ontology category enrichment analyses.

    “These results are in line with claims in other studies on domestication [49, 123–125], where categories like ‘neurological process’ frequently stand out strongly in gene ontology category enrichment analyses.”

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  1. [87]Slatkin M, Wiehe T (1998) Genetic hitch-hiking in a subdivided population. Genetical Res 71: 155– 160. 9717437

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Authors
Freedman, A. H., Schweizer, R. M., Ortega-Del Vecchyo, D., Han, E., Davis, B. W., Gronau, I., Silva, P. M., Galaverni, M., Fan, Z., Marx, P., Lorente-Galdos, B., Ramirez, O., Hormozdiari, F., Alkan, C., Vilà, C., Squire, K., Geffen, E., Kusak, J., Boyko, A. R., Parker, H. G., Lee, C., Tadigotla, V., Siepel, A., Bustamante, C. D., Harkins, T. T., Nelson, S. F., Marques-Bonet, T., Ostrander, E. A., Wayne, R. K., & Novembre, J.
Affiliations
  • University of California, Los Angeles (US)
  • National Institutes of Health (US)
  • Cornell University (US)
  • Universidade do Porto (PT)
  • Istituto Superiore per la Protezione e la Ricerca Ambientale (IT)
  • Sichuan University (CN)
  • Bilkent University (TR)
  • Consejo Superior de Investigaciones Científicas (ES)
  • Tel Aviv University (IL)
  • University of Zagreb (HR)
  • Institució Catalana de Recerca i Estudis Avançats (ES)
  • Cold Spring Harbor Laboratory (US)
  • Stanford Medicine (US)
Corresponding author
Freedman, Adam H.
Venue
PLoS Genetics
Published
2016-03-04
Volume
12
Issue
3
Pages
e1005851
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2292190728
Cited by
104
References
92
Citations by year
2026: 3 · 2025: 8 · 2024: 3 · 2023: 7 · 2022: 7 · 2021: 14 · 2020: 15 · 2019: 15 · 2018: 14 · 2017: 13 · 2016: 5
FWCI
12.62
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, public-domain)
  • Europe PMC (PubMed Central) (publishedVersion, public-domain)
  • PubMed Central (publishedVersion, public-domain)
  • PubMed (publishedVersion)
  • RECERCAT (Consorci de Serveis Universitaris de Catalunya) (publishedVersion, other-oa)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (acceptedVersion)
  • Bilkent University Institutional Repository (Bilkent University) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, public-domain)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, public-domain)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Repositori digital de la UPF (Universitat Pompeu Fabra) (submittedVersion, public-domain)
Funders
  • Harvard University
  • Tel Aviv University
  • University of California, Los Angeles
  • Institute for Digital Research and Education, University of California, Los Angeles
  • FAS Division of Science, Harvard University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Human-Animal Interaction Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
Keywords
dog domestication, positive selection, demographic effects, false discovery rate, candidate genes, lipid metabolism, dietary selection, hunter-gatherers
MeSH terms
Animals, Demography, Dogs, Genetics, Population, Selection, Genetic, Genome, Polymorphism, Single Nucleotide, Genomics, Lipid Metabolism

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