INVESTIGADORES
RAYA REY Andrea Nelida
artículos
Título:
New records of South American sea lion Otaria flavescens predation on southern rockhopper penguins Eudyptes chrysocome at Staten Island, Argentina
Autor/es:
RAYA REY A; SAENZ SAMANIEGO R; PETRACCI P
Revista:
POLAR BIOLOGY
Editorial:
SPRINGER
Referencias:
Año: 2012 vol. 35 p. 319 - 322
ISSN:
0722-4060
Resumen:
Predation by fur seals and sea lions has been identified, among others, as a potential cause of the declines in rockhopper penguin populations. Here we report a multiple predation event of southern rockhopper penguins Eudyptes chrysocome by South American sub-adult male sea lions Otaria flavescens at Staten Island, Argentina. The sea lions attacked and preyed on penguins mostly using a wait and rush tactic at sea, but in some cases, penguins were also pursued on land. Although observations suggested that only a few sea lions are involved in predation, further research is necessary to elucidate the importance of this predation in the rate of population decline.
