Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/2369
Título: Decision-making in pigeon flocks: A democratic view of leadership
Autor: Jorge, Paulo
Marques, Paulo A. M.
Palavras-chave: Despotic decision
Democratic decision
Social information
Personal information
Homing pigeon
Data: 2012
Editora: Company of Biologists Ltd
Citação: Journal of Experimental Biology, 215, 2414-2417
Resumo: When travelling in groups, animals frequently have to make decisions on the direction of travel. These decisions can be based on consensus, when all individuals take part in the decision (i.e. democratic decision; social information), or leadership, when one member or a minority of members make the decision (i.e. despotic decision; personal information). Here we investigated whether decision-making on the navigation of small flocks is based on democratic or despotic decisions. Using individual and flock releases as the experimental approach, we compared the homing performances of homing pigeons that fly singly and in groups of three. Our findings show that although small groups were either governed (i.e. when individuals in the flock had age differences) or not (i.e. when individuals in the flock had the same age) by leaders, with concern to decision-making they were all ruled by democratic decisions. Moreover, the individual homing performances were not associated with leadership. Because true leaders did not assume right away the front position in the flock, we suggest that as in human groups, starting from a central position is more effective as it allows leaders to not only transmit their own information but also to average the tendencies of the other group members. Together, the results highlight the importance of democratic decisions in group decision-making.
Peer review: yes
URI: http://hdl.handle.net/10400.12/2369
ISSN: 0022-0949
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
JEB_215_2414-2417.pdf228,86 kBAdobe PDFVer/Abrir

FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.