INVESTIGADORES
CASAUX Ricardo Jorge
artículos
Título:
Diet of Antarctic fur seals Arctocephalus gazella at the Danco Coast, Antarctic Peninsula
Autor/es:
CASAUX RICARDO; BARONI ANDREA; RAMÓN, A.
Revista:
POLAR BIOLOGY
Referencias:
Año: 2003 vol. 26 p. 49 - 54
ISSN:
0722-4060
Resumen:
Abstract
The
diet of non-breeding male Antarctic fur seals Arctocephalus gazella was investigated at the Danco Coast,
Antarctic Peninsula, by the analysis of 31 and 149 scats collected
from January to March 1998 and 2000 respectively. Overall fish and krill,
followed by penguins and squids, were the most frequent prey and constituted
the bulk of the diet. The importance
of the remaining taxa represented in the samples (octopods, gastropods, bivalves, isopods, polychaetes and
porifera) was negligible. Among fish, Channichthyids constituted the bulk of the diet with Chionodraco rastrospinosus and Chaenodraco wilsoni, followed by the
Nototheniid Pleuragramma antarcticum,
being the main prey. The Myctophid Electrona
antarctica was the most frequent and numerous fish prey. The results are
discussed and compared with those reported for the South Shetland Islands, the
closest area from where similar information is available.