Consistent inter-individual differences in common marmosets (Callithrix jacchus) in Boldness-Shyness, Stress-Activity, and Exploration-Avoidance.
The study of animal personality, defined as consistent inter-individual differences in correlated behavioral traits stable throughout time and/or contexts, has recently become one of the fastest growing areas in animal biology, with study species ranging from insects to non-human primates. The latter have, however, only occasionally been tested with standardized experiments. Instead their personality has usually been assessed using questionnaires. Therefore, this study aimed to test 21 common marmosets (Callithrix jacchus) living in three family groups, in five different experiments, and their corresponding controls. We found that behavioral differences between our animals were not only consistent over time, but also across different contexts. Moreover, the consistent behaviors formed a construct of four major non-social personality components: Boldness-Shyness in Foraging, Boldness-Shyness in Predation, Stress-Activity, and Exploration-Avoidance. We found no sex or age differences in these components, but our results did reveal differences in Exploration-Avoidance between the three family groups. As social environment can have a large influence on behavior of individuals, our results may suggest group-level similarity in personality (i.e., "group personality") in common marmosets, a species living in highly cohesive social groups. Am. J. Primatol. 78:961-973, 2016. © 2016 Wiley Periodicals, Inc.
Department of Cognitive Biology, University of Vienna, Vienna, Austria.|Division of Biology, University of Zagreb, Zagreb, Croatia.
Vedrana
V
Šlipogor
Department of Cognitive Biology, University of Vienna, Vienna, Austria.
Tina
T
Gunhold-de Oliveira
Division of Biology, University of Zagreb, Zagreb, Croatia.
Zoran
Z
Tadić
Department of Cognitive Biology, University of Vienna, Vienna, Austria.
Jorg J M
JJ
Massen
Department of Cognitive Biology, University of Vienna, Vienna, Austria.
Thomas
T
Bugnyar
D000818:Animals; D001522:Behavior, Animal; D002144:Callithrix; D005106:Exploratory Behavior; D007206:Individuality; D010551:Personality; D012792:Shyness; D013315:Stress, Psychological
animal personality; common marmosets; consistent inter-individual differences; group personality; non-human primates; solitary setting