Services on Demand
Journal
Article
Indicators
Cited by SciELO
Related links
Similars in SciELO
uBio
Share
El hornero
Print version ISSN 0073-3407On-line version ISSN 1850-4884
Abstract
PETRACCI, Pablo F.; DELHEY, Kaspar and SOTELO, Martín. Granivorous habit in Olrog's Gull (Larus atlanticus): implications for its specialist status. Hornero [online]. 2007, vol.22, n.1, pp.51-54. ISSN 0073-3407.
We report on unknown feeding habits of the Olrog's Gull (Larus atlanticus) in the area of Ingeniero White port, Bahía Blanca, Buenos Aires Province, Argentina. Between 2002 and 2005, 281 individuals were observed feeding on grains along the shoulder of the road and in a parking lot besides the port. Feeding groups were of 2-51 individuals. This behaviour was observed mostly (78%) during high tides, when access to intertidal prey is limited. The exploitation of human resources by Larus atlanticus supports the hypothesis that this species has some degree of trophic plasticity and could behave as a generalist. We briefly review the literature on its diet, proposing an explanation for the different observations obtained along the coast of Argentina.
Keywords : Argentina; Bahía Blanca; diet; grains; Larus atlanticus; Olrog's Gull.