% pubman genre = article
@article{item_2367636,
title = {{Social allies modulate corticosterone excretion and increase success in agonistic interactions in juvenile hand-raised graylag geese (Anser anser)}},
author = {Frigerio, Didone and Wei{\ss}, Brigitte M. and Dittami, John and Kotrschal, Kurt},
language = {eng},
issn = {0008-4301},
doi = {10.1139/z03-149},
year = {2003},
date = {2003-10},
abstract = {{In mammals, support by a social partner may reduce stress levels and ease access to resources. We investigated the effects of the passive presence of a nearby social ally on excreted corticosterone immunoreactive metabolites and behaviour in juvenile graylag geese (Anser anser). Two groups of hand-raised juveniles (N1 {\textequals} 9, N2 {\textequals} 3) were tested over 1 year by positioning humans of different familiarity (i.e., the human foster parent, a familiar human, a nonfamiliar human, no human) at a standard distance to the focal geese. Their success in agonistic interactions significantly decreased with age and with decreasing familiarity of the accompanying human. The humans present modulated the excretion of corticosterone immunoreactive metabolites, with the strongest effects recorded after fledging when corticosterone metabolites were also positively correlated with agonistic behaviour. This suggests that a human foster parent may provide similar supportive benefits as goose parents do in natural families. We discu..., Chez les mammif{\`e}res, le support d{\textquotesingle}un partenaire social peut r{\'e}duire les niveaux de stress et faciliter l{\textquotesingle}acc{\`e}s aux ressources. Nous avons {\'e}tudi{\'e} les effets de la pr{\'e}sence passive {\`a} proximit{\'e} d{\textquotesingle}un alli{\'e} social sur l{\textquotesingle}excr{\'e}tion des m{\'e}tabolites immunor{\'e}actifs de la cortisone et sur le comportements chez de jeunes oies cendr{\'e}es (Anser anser). Deux groupes de jeunes {\'e}lev{\'e}s {\`a} la main (N1 {\textequals} 9, N2 {\textequals} 3) ont {\'e}t{\'e} {\'e}valu{\'e}s au cours d{\textquotesingle}une ann{\'e}e en pla{\c{c}}ant des humains de familiarit{\'e} variable (i.e., le parent adoptif humain, un humain familier, un humain inconnu, aucun humain) {\`a} une distance standard des oies cibl{\'e}es. Le succ{\`e}s des oies dans les interactions agonistiques d{\'e}cro{\^\i}t significativement avec l{\textquotesingle}{\^a}ge et augmente avec la familiarit{\'e} du compagnon humain. La pr{\'e}sence des humains affecte l{\textquotesingle}excr{\'e}tion des m{\'e}tabolites immunor{\'e}actifs de la cortisone et les effets les plus forts se manifestent apr{\`e}s l{\textquotesingle}envol, un moment o{\`u} m{\'e}tabolites de la cortisone est en corr{\'e}lation positive avec le comportement agonistique. Ces observatio...}},
journal = {{Canadian Journal of Zoology}},
volume = {81},
number = {10},
pages = {1746--1754},
}