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Space partitioning without territoriality in gannets.
Ewan D Wakefield
1 ,
Thomas W Bodey ,
Stuart Bearhop ,
Jez Blackburn ,
Kendrew Colhoun ,
Rachel Davies ,
Ross G Dwyer ,
Jonathan A Green ,
David Grémillet ,
Andrew L Jackson ,
Mark J Jessopp ,
Adam Kane ,
Rowena H W Langston ,
Amélie Lescroël ,
Stuart Murray ,
Mélanie Le Nuz ,
Samantha C Patrick ,
Clara Péron ,
Louise M Soanes ,
Sarah Wanless ,
Stephen C Votier ,
Keith C Hamer
Jul 05 2013
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Abstract
Colonial breeding is widespread among animals. Some, such as eusocial insects, may use agonistic behavior to partition available foraging habitat into mutually exclusive territories; others, such as breeding seabirds, do not. We found that northern gannets, satellite-tracked from 12 neighboring colonies, nonetheless forage in largely mutually exclusive areas and that these colony-specific home ranges are determined by density-dependent competition. This segregation may be enhanced by individual-level public information transfer, leading to cultural evolution and divergence among colonies.