Monitoreo de la dieta post-reproductiva del Pingüino Papua (Pygoscelis papua) en Isla Laurie (Orcadas del Sur, Antártida): período 1997-1999.

BERÓN MP, NR CORIA & M FAVERO

ORNITOLOGIA NEOTROPICAL

Año: 2002 vol. 13 p. 57 - 67

1075-4377

Post-breeding diet of the Gentoo Penguin (Pygoscelis papua) at Laurie Island (South Orkney Islands, Antarctica): period 1997–1999. – The diet of the Gentoo Penguin (Pygoscelis papua) was monitored at Laurie Island, (South Orkney Islands, Antarctica) during the post-breeding seasons 1997, 1998 and 1999. Krill (Euphausia superba) was the most important prey by number (> 90%) and mass (> 60%) during the three sampling periods, while fish was the most frequent prey during 1997. Fish were present in 73% of samples; nototheniids (Gobionotothen gibberifrons, Lepidonotothen larseni, Lepidonotothen nudifrons and Trematomus newnesi) being the most important species. L. larseni and G. gibberifrons constituted the bulk of the diet in terms of mass. The largest fish prey being G. gibberifrons (18.7cm + 9.1). Cephalopods and amphipods were occasionally present in the diet. Diet monitoring during the post-breeding season showed interanual variation, fish being the most variable resource, whereas krill showed much less variation through the study.Pygoscelis papua) at Laurie Island (South Orkney Islands, Antarctica): period 1997–1999. – The diet of the Gentoo Penguin (Pygoscelis papua) was monitored at Laurie Island, (South Orkney Islands, Antarctica) during the post-breeding seasons 1997, 1998 and 1999. Krill (Euphausia superba) was the most important prey by number (> 90%) and mass (> 60%) during the three sampling periods, while fish was the most frequent prey during 1997. Fish were present in 73% of samples; nototheniids (Gobionotothen gibberifrons, Lepidonotothen larseni, Lepidonotothen nudifrons and Trematomus newnesi) being the most important species. L. larseni and G. gibberifrons constituted the bulk of the diet in terms of mass. The largest fish prey being G. gibberifrons (18.7cm + 9.1). Cephalopods and amphipods were occasionally present in the diet. Diet monitoring during the post-breeding season showed interanual variation, fish being the most variable resource, whereas krill showed much less variation through the study.