Fish prey of southern elephant seals, Mirounga leonina, at King George Island

@article{Daneri2002FishPO,
  title={Fish prey of southern elephant seals, Mirounga leonina, at King George Island},
  author={Gustavo Adolfo Daneri and Alejandro R. Carlini},
  journal={Polar Biology},
  year={2002},
  volume={25},
  pages={739-743}
}
Abstract. Between November and February in the years 1993/1994 to 1999/2000, 153 southern elephant seals, Mirounga leonina, were stomach lavaged at King George Island. Fish occurred in 16 of 108 stomachs containing food items. Myctophids were the dominant fish prey, contributing 76.6% of the 145 sagittal otoliths found. The most important prey species was Gymnoscopelus nicholsi, which constituted 69% of the otoliths and occurred in 75% of stomach samples. Next in importance was the nototheniid… 

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References

SHOWING 1-10 OF 38 REFERENCES
Cephalopod diet of the southern elephant seal, Mirounga leonina, at King George Island, South Shetland Islands
TLDR
The squid Psychroteuthis glacialis was the most important prey of the South Shetland Islands elephant seals in terms of numbers, biomass, biomass and frequency of occurrence, and the squid Alluroteuthis antarcticus was the predominant squid in waters close to the Antarctic continent.
The diet of southern elephant seals (Mirounga leonina) from Heard Island
TLDR
Stomach contents were lavaged from 76 southern elephant seals at Heard Island between July 1992 and March 1993 and the diet of adults differed from that of juveniles, particularly pups in their first year.
COMPARISON OF THE STOMACH CONTENTS OF SOUTHERN ELEPHANT SEALS, MIROUNGA LEONINA, AT MACQUARIE AND HEARD ISLANDS
TLDR
The difficulty in collecting dietary samples of southern elephant seals near their main foraging areas makes the study of the feeding ecology of this species extremely difficult in comparison with other Southern Ocean species.
Foraging ecology of southern elephant seals in relation to the bathymetry and productivity of the Southern Ocean
TLDR
It is suggested that the physiological requirements of feeding and digestion reduced the aerobic dive limit of elephant seals, and long distance travel to relocatable hydrographic or topographical features, such as shelf breaks, may allow large predators to locate prey more consistently than from mid-ocean searches.
Status of southern elephant seals at South Georgia
Approximately 54% of the world population of southern elephant seals (Mirounga leonina) breeds at South Georgia. A partial survey in 1951 and a complete survey in 1985, together with counts at
Movements of southern elephant seals
TLDR
Three seals that were tracked over more than one season repeated their outward direction of travel and used some of the same sites in subsequent years, which makes most of the Southern Ocean potentially available to elephant seals.
Population biology of the myctophid fish Gymnoscopelus nicholsi (Gillbert, 1911) from the western South Atlantic
TLDR
The Gymnoscopelus nicholsi population is divided into a pelagic stock of juveniles and sub-adults which occur in the offshore waters of the western South Atlantic and benthopelagic stocks of adults distributed over the slope regions off Argentina, South Georgia and Antarctic archipelagos.
ASSESSING NORTHERN ELEPHANT SEAL FEEDING HABITS BY STOMACH LAVAGE
TLDR
Stomach lavaging was used to study the feeding habits of northern elephanr seals found on San hliguel Island, California, during the spring of 1984, and 12 of which have not been previously reported as prey of the northern elephant seal were identified.
Southern elephant seal movements and Antarctic sea ice
Weaned pups and post-moult female elephant seals (Mirounga leonina) were fitted with satellite transmitters at King George Island (South Shetland Islands) between December 1996 and February 1997. Of
Mass changes during their annual cycle in females of southern elephant seals at King George Island
TLDR
Total mass gain was positively related to the mass loss experienced by females from parturition until the end of the moulting period in the first breeding season, and total mass loss was not significantly different from mass gain for the same females between lactation and moult.
...
1
2
3
4
...