Cited by 179Human-Animal Interaction StudiesGenetic and phenotypic traits in livestockGenetic Mapping and Diversity in Plants and Animals

Genetic mapping of canine fear and aggression

Open access
Zapata, Isain, Serpell, James A., Alvarez, Carlos E.·2016·BMC Genomics

Abstract

BACKGROUND: Fear/anxiety and anger/aggression greatly influence health, quality of life and social interactions. They are a huge burden to wellbeing, and personal and public economics. However, while much is known about the physiology and neuroanatomy of such emotions, little is known about their genetics - most importantly, why some individuals are more susceptible to pathology under stress. RESULTS: We conducted genomewide association (GWA) mapping of breed stereotypes for many fear and aggression traits across several hundred dogs from diverse breeds. We confirmed those findings using GWA in a second cohort of partially overlapping breeds. Lastly, we used the validated loci to create a model that effectively predicted fear and aggression stereotypes in a third group of dog breeds that were not involved in the mapping studies. We found that i) known IGF1 and HMGA2 loci variants for small body size are associated with separation anxiety, touch-sensitivity, owner directed aggression and dog rivalry; and ii) two loci, between GNAT3 and CD36 on chr18, and near IGSF1 on chrX, are associated with several traits, including touch-sensitivity, non-social fear, and fear and aggression that are directed toward unfamiliar dogs and humans. All four genome loci are among the most highly evolutionarily-selected in dogs, and each of those was previously shown to be associated with morphological traits. We propose that the IGF1 and HMGA2 loci are candidates for identical variation being associated with both behavior and morphology. In contrast, we show that the GNAT3-CD36 locus has distinct variants for behavior and morphology. The chrX region is a special case due to its extensive linkage disequilibrium (LD). Our evidence strongly suggests that sociability (which we propose is associated with HS6ST2) and fear/aggression are two distinct GWA loci within this LD block on chrX, but there is almost perfect LD between the peaks for fear/aggression and animal size. CONCLUSIONS: We have mapped many canine fear and aggression traits to single haplotypes at the GNAT3-CD36 and IGSF1 loci. CD36 is widely expressed, but areas of the amygdala and hypothalamus are among the brain regions with highest enrichment; and CD36-knockout mice are known to have significantly increased anxiety and aggression. Both of the other genes have very high tissue-specificity and are very abundantly expressed in brain regions that comprise the core anatomy of fear and aggression - the amygdala to hypothalamic-pituitary-adrenal (HPA) axis. We propose that reduced-fear variants at these loci may have been involved in the domestication process.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1186/s12864-016-2936-3

Cites

80 of 80 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Aggression and fear are associated with the same genetic loci linked to small body size.

    “Aggression and fear are associated with the same genetic loci linked to small body size, as suggested by the correlation found in Zapata et al.’s studies [162,163].”

    From Ethical Concerns about Fashionable Dog Breeding (2024) · cites this paper as [162]

    The Discussion links owner-directed aggression and some fear-related traits to IGF1 variation associated with small body size. But it distinguishes these from dog- and stranger-oriented fear and aggression, which are more strongly associated with loci on chromosomes 18 and X. The claim is therefore too broad if read as applying to fear and aggression generally. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Non-genetic models, such as stress-induced aggression and other organisms, were not included in this study.

    “We noted that non-genetic models, such as stress-induced aggression [27, 81] and other organisms [30, 31, 82], were not included in this study.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Zapata, I., Serpell, J. A., & Alvarez, C. E.
Affiliations
  • Nationwide Children's Hospital (US)
  • University of Pennsylvania (US)
Corresponding author
Alvarez, Carlos E.
Venue
BMC Genomics
Published
2016-08-08
Volume
17
Issue
1
Pages
572-572
ISSN
1471-2164 (ISSN-L)
OpenAlex
W2518047727
Cited by
168
References
80
Citations by year
2026: 14 · 2025: 17 · 2024: 19 · 2023: 26 · 2022: 20 · 2021: 14 · 2020: 16 · 2019: 18 · 2018: 11 · 2017: 10 · 2016: 3
FWCI
11.30
Type
journal article
Language
en
Open access
Locations
  • BMC Genomics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Congressionally Directed Medical Research Programs (W81XWH-11-2-0224)
  • American Kennel Club Canine Health Foundation (01660)
  • Morris Animal Foundation (D13CA-073)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Human-Animal Interaction Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
Keywords
insulin-like growth factor I, HMGA2, IGSF1, separation anxiety, tactile sensitivity, sociability, amygdala, hypothalamic-pituitary-adrenal axis
MeSH terms
Aggression, Alleles, Animals, Behavior, Animal, Breeding, Chromosome Mapping, Dogs, Fear, Haplotypes, Linkage Disequilibrium, Genome, Genome-Wide Association Study, Genetic Association Studies

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review