title: Emigration dynamics of cockroaches under different disturbance regimes do not depend on individual personalities.
abstract: Group-level properties, such as collective movements or decisions, can be considered an outcome of the interplay between individual behavior and social interactions. However, the respective influences of individual preferences and social interactions are not evident. In this research, we study the implications of behavioral variability on the migration dynamics of a group of gregarious insects (Periplaneta americana) subjected to two different disturbance regimes (one without disturbances and another one with high frequency of disturbances). The results indicate that individuals presented consistent behavior during the nighttime (active phase of cockroaches) in both conditions. Moreover, we used a modeling approach to test the role of personality during the migration process. The model considers identical individuals (no personality) without memory and no direct inter-attraction between individuals. The agreement between theoretical and experimental results shows that behavioral variability play a secondary role during migration dynamics. Our results showing individual personality during the nighttime (spontaneous decision to forage) but not during the emigration process (induced by environmental disturbances) highlight the plasticity of personality traits.
authors.affiliation: Unit of Social Ecology - CP 231, Université libre de Bruxelles (ULB), Campus Plaine, Boulevard du Triomphe, Building NO - level 5, B-1050 Bruxelles, Belgium.
authors.forename: I
authors.initials: I
authors.lastname: Planas-Sitjà
authors.affiliation: Unit of Social Ecology - CP 231, Université libre de Bruxelles (ULB), Campus Plaine, Boulevard du Triomphe, Building NO - level 5, B-1050 Bruxelles, Belgium.
authors.forename: M O
authors.initials: MO
authors.lastname: Laurent Salazar
authors.affiliation: Unit of Social Ecology - CP 231, Université libre de Bruxelles (ULB), Campus Plaine, Boulevard du Triomphe, Building NO - level 5, B-1050 Bruxelles, Belgium.
authors.forename: G
authors.initials: G
authors.lastname: Sempo
authors.affiliation: Unit of Social Ecology - CP 231, Université libre de Bruxelles (ULB), Campus Plaine, Boulevard du Triomphe, Building NO - level 5, B-1050 Bruxelles, Belgium.
authors.forename: J L
authors.initials: JL
authors.lastname: Deneubourg
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D003058:Cockroaches / Q000235:genetics / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D010551:Personality / Q000235:genetics / Q000502:physiology*; D012919:Social Behavior