Genetic Architecture of Innate Fear Behavior in Chickens

The genetic architecture of innate fear behavior in chickens is poorly understood. Here, we performed quantitative trait loci (QTL) analysis of innate responses to tonic immobility (TI) and open field (OF) fears in 242 newly hatched chicks of an F 2 population between the native Japanese Nagoya bree...

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Bibliographic Details
Published in:Behavior genetics 2020-11, Vol.50 (6), p.411-422
Main Authors: Ishikawa, Akira, Sakaguchi, Marina, Nagano, Atsushi J., Suzuki, Sae
Format: Article
Language:English
Subjects:
Age
Behavior
Behavioral Science and Psychology
Chromosomes
Clinical Psychology
Deoxyribonucleic acid
DNA
DNA sequencing
Domestication
Eggs
Fear
Fear & phobias
Gene loci
Genetics
Genomes
Genomics
Health Psychology
Heredity
Inheritance
Original Research
Physical restraints
Poultry
Psychology
Public Health
Quantitative trait loci
Single-nucleotide polymorphism
Tonic immobility
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Summary:The genetic architecture of innate fear behavior in chickens is poorly understood. Here, we performed quantitative trait loci (QTL) analysis of innate responses to tonic immobility (TI) and open field (OF) fears in 242 newly hatched chicks of an F 2 population between the native Japanese Nagoya breed and the White Leghorn breed using 881 single nucleotide polymorphism markers obtained by restriction site-associated DNA sequencing. At genome-wide 5% significance levels, four QTL for TI traits were revealed on chromosomes 1–3 and 24. Two of these loci had sex-specific effects on the traits. For OF traits, three QTL were revealed on chromosomes 2, 4 and 7. The TI and OF QTL identified showed no overlaps in genomic regions and different modes of inheritance. The three TI QTL and one OF QTL exerted antagonistic effects on the traits. The results demonstrated that context-dependent QTL underlie the variations in innate TI and OF behaviors.
ISSN:0001-8244
1573-3297
DOI:10.1007/s10519-020-10012-0