Table 1 Heritability estimates and standard deviations for behaviour traits using pedigree and genotype data

From: Genetic dissection of complex behaviour traits in German Shepherd dogs

Behaviour traita Pedigree-basedb Genomic-basedb
SDA: Stranger-directed aggression (12%) 0.00 ± 0.00 (1033) 0.00 ± 0.06 (729)
DDA: Dog-directed aggression (10%) 0.00 ± 0.05 (906) 0.00 ± 0.05 (638)
SDF: Stranger-directed fear (8%) 0.04 ± 0.05 (1018) 0.04 ± 0.05 (705)
Play: Human-directed playfulness (7%) 0.23±0.08 (1031) 0.17±0.07 (712)
EX: Excitability (7%) 0.05 ± 0.05 (1038) 0.06 ± 0.05 (725)
SA: Separation anxiety (7%) 0.00 ± 0.00 (1010) 0.00 ± 0.05 (716)
LO: Lack of obedience (7%) 0.00 ± 0.00 (1011) 0.00 ± 0.06 (711)
SDI: Stranger-directed interest (6%) 0.10±0.06 (985) 0.01 ± 0.05 (687)
AS: Attachment/ Attention seeking (6%) 0.00 ± 0.00 (1003) 0.02 ± 0.05 (706)
CH: Chasing (6%) 0.09 ± 0.06 (966) 0.13±0.06 (659)
NSF: Non-social fear (6%) 0.12±0.06 (1025) 0.16±0.06 (727)
DDF: Dog-directed fear (5%) 0.01 ± 0.04 (1001) 0.00 ± 0.04 (698)
TS: Touch-sensitivity (4%) 0.02 ± 0.04 (966) 0.00 ± 0.04 (672)
  1. Values highlighted in bold are significant according to a log-likelihood ratio test (for pedigree-based estimations) or for P < 0.05 (for genomic-based estimations)
  2. aBehaviour traits are listed in descending order for the variance explained by the PCA used to define the traits (given in parentheses; see Supplement 1)
  3. bHeritability estimates with the number of dogs in the analysis (given in parentheses)