Abstract

During the summer season 2010-2011 was studied the predation of Otaria flavescens on Eudyptes chrysocome chrysocome in Gonzalo Island (56 degrees 31'S; 68 degrees 42'W), Diego Ramirez archipelago, southern Chile. In total, 75 attacks of sea lion on penguins were recorded, from which 34 (45.3%) corresponded to successful attacks and kill of penguins. Among recorded behaviors during attacks, we highlight: i) persecutions during penguin's swimming, ii) persecutions at land and iii) surprise attacks under water. We identified a bird assemblage associated to predation events, dominated by Macronectes giganteus.