The ghost of social environments past: dominance relationships include current interactions and experience carried over from previous groups.

Détails

ID Serval
serval:BIB_36CB1EE967C2
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The ghost of social environments past: dominance relationships include current interactions and experience carried over from previous groups.
Périodique
Biology Letters
Auteur(s)
Tanner C.J., Salali G.D., Jackson A.L.
ISSN
1744-957X (Electronic)
ISSN-L
1744-9561
Statut éditorial
Publié
Date de publication
2011
Peer-reviewed
Oui
Volume
7
Numéro
6
Pages
818-821
Langue
anglais
Résumé
Dominance hierarchies pervade animal societies. Within a static social environment, in which group size and composition are unchanged, an individual's hierarchy rank results from intrinsic (e.g. body size) and extrinsic (e.g. previous experiences) factors. Little is known, however, about how dominance relationships are formed and maintained when group size and composition are dynamic. Using a fusion-fission protocol, we fused groups of previously isolated shore crabs (Carcinus maenas) into larger groups, and then restored groups to their original size and composition. Pre-fusion hierarchies formed independently of individuals' sizes, and were maintained within a static group via winner/loser effects. Post-fusion hierarchies differed from pre-fusion ones; losing fights during fusion led to a decline in an individual's rank between pre- and post-fusion conditions, while spending time being aggressive during fusion led to an improvement in rank. In post-fusion tanks, larger individuals achieved better ranks than smaller individuals. In conclusion, dominance hierarchies in crabs represent a complex combination of intrinsic and extrinsic factors, in which experiences from previous groups can carry over to affect current competitive interactions.
Mots-clé
aggression, carry-over effects, dominance hierarchy, fission-fusion, social environment
Pubmed
Web of science
Création de la notice
17/02/2012 8:36
Dernière modification de la notice
20/08/2019 13:24
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