Evaluation of the serotonergic genes htr1A, htr1B, htr2A, and slc6A4 in aggressive behavior of golden retriever dogs

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van den Berg, L (author)

Evaluation of the serotonergic genes htr1A, htr1B, htr2A, and slc6A4 in aggressive behavior of golden retriever dogs

Article/chapterEnglish2008

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2007-12-07
Springer Science and Business Media LLC,2008
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LIBRIS-ID:oai:DiVA.org:uu-100867
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-100867URI
https://doi.org/10.1007/s10519-007-9179-7DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Aggressive behavior displays a high heritability in our study group of Golden Retriever dogs. Alterations in brain serotonin metabolism have been described in aggressive dogs before. Here, we evaluate whether four genes of the canine serotonergic system, coding for the serotonin receptors 1A, 1B, and 2A, and the serotonin transporter, could play a major role in aggression in Golden Retrievers. We performed mutation screens, linkage analysis, an association study, and a quantitative genetic analysis. There was no systematic difference between the coding DNA sequence of the candidate genes in aggressive and non-aggressive Golden Retrievers. An affecteds-only parametric linkage analysis revealed no strong major locus effect on human-directed aggression related to the candidate genes. An analysis of 41 single nucleotide polymorphisms (SNPs) in the 1 Mb regions flanking the genes in 49 unrelated human-directed aggressive and 49 unrelated non-aggressive dogs did not show association of SNP alleles, genotypes, or haplotypes with aggression at the candidate loci. We completed our analyses with a study of the effect of variation in the candidate genes on a collection of aggression-related phenotypic measures. The effects of the candidate gene haplotypes were estimated using the Restricted Maximum Likelihood method, with the haplotypes included as fixed effects in a linear animal model. We observed no effect of the candidate gene haplotypes on a range of aggression-related phenotypes, thus extending our conclusions to several types of aggressive behavior. We conclude that it is unlikely that these genes play a major role in the variation in aggression in the Golden Retrievers that we studied. Smaller phenotypic effects of these loci could not be ruled out with our sample size.

Subject headings and genre

LANTBRUKSVETENSKAPER Veterinärmedicin hsv//swe
AGRICULTURAL SCIENCES Veterinary Science hsv//eng
dog
aggression
serotonin
candidate gene
linkage
association
VETERINARY MEDICINE
VETERINÄRMEDICIN

Added entries (persons, corporate bodies, meetings, titles ...)

Vos-Loohuis, M (author)
Schilder, M B H (author)
van Oost, B A (author)
Hazewinkel, H A W (author)
Wade, C M (author)
Karlsson, E K (author)
Lindblad-Toh, KerstinUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi(Swepub:uu)kerli865 (author)
Liinamo, A E (author)
Leegwater, P A J (author)
Uppsala universitetInstitutionen för medicinsk biokemi och mikrobiologi (creator_code:org_t)

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In:Behavior Genetics: Springer Science and Business Media LLC38:1, s. 55-660001-82441573-3297

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By the author/editor: van den Berg, L; Vos-Loohuis, M; Schilder, M B H; van Oost, B A; Hazewinkel, H A ...; Wade, C M; show more...; Karlsson, E K; Lindblad-Toh, Ke ...; Liinamo, A E; Leegwater, P A J; show less...

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AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Veterinary Scien ...

Articles in the publication: Behavior Genetic ...

By the university: Uppsala University

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