Impact of predation on king penguin Aptenodytes patagonicus in Crozet Archipelago

@article{Descamps2004ImpactOP,
  title={Impact of predation on king penguin Aptenodytes patagonicus in Crozet Archipelago},
  author={S{\'e}bastien Descamps and Michel Gauthier‐Clerc and C{\'e}line Le Bohec and J P Gendner and Yvon le Maho},
  journal={Polar Biology},
  year={2004},
  volume={28},
  pages={303-310}
}
Predation can have major effects on population dynamics, but predator–prey interactions in marine ecosystems have rarely been studied. While the king penguin is one of the most studied seabirds, little is known about the impact of predation on its population dynamics. Here, we determine the impact of the main predators (giant petrels and skuas) on king penguin breeding success taking into account the nocturnal predation of petrels. We found that predation is the most important source of… 

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References

SHOWING 1-10 OF 37 REFERENCES

Nocturnal predation of king penguins by giant petrels on the Crozet Islands

TLDR
The activity of giant petrels in a king penguin colony day and night during the austral winter of 2001 on the Crozet Islands raises questions concerning visual adaptations to nocturnal foraging in giantPetrels and their potential impact on the sleep, vigilance and crèching behavior of penguin chicks.

Skua and penguin : predator and prey

TLDR
The study area is Ross Island and the Cape Bird penguin colonies and the range of foods available to the skuas at Cape Bird during the breeding season and the diversity and intensity of skua foraging behaviour on the penguin colony.

AVIAN PREDATION AT PENGUIN COLONIES ON KING GEORGE ISLAND, ANTARCTICA

TLDR
To test the hypothesis that larger rather than smaller colonies provide greater protection to penguin chicks, predator activities at colonies of various sizes of Adelie (Pygoscelis adeliae) and Gentoo (P. papua) penguins are observed.

Modeling Population Dynamics of a Songbird Exposed to Parasitism and Predation and Evaluating Management Options

TLDR
This modeling approach can be used to determine the reproductive health of a population over a range of parasitism and predation values, to test alternative hypotheses for the cause of an observed population decline, and to make a priori predictions about the outcomes of specific management actions.

Food availability and nest predation influence life history traits in Audouin's gull, Larus audouinii

TLDR
Results confirm that population dynamics of ground-nesting seabirds are sensitive to terrestrial predation, even when predation caused only a partial breeding failure, and suggest that birds that left the colony still had not returned.

Feeding territoriality and the reproductive consequences in brown skuas Catharacta antarctica lonnbergi

TLDR
It is concluded that skuas owning feeding territories in penguin colonies benefit from the predictable and stable food resource by an earlier termination of the annual breeding cycle and higher offspring survivorship.

Ecology and physiology of fasting in King Penguin chicks

-Captive King Penguin (Aptenodytes patagonica) chicks can fast for 5 months during the subantarctic winter with a 70% decrease in body mass. To investigate the adaptive value of this remarkable

Seasonal effects of timing and reproduction in the King Penguin: a unique breeding cycle

There was a seasonal biomodality in the distribution of breeding activities of King Penguins Aptenodytes patagonicus, studied from 1991 to 1994 at South Georgia, with peaks of courtship and

Exploitation of pelagic resources by a non-flying seabirds: Satellite tracking of the king penguin throughout the breeding cycle.

TLDR
The investigated foraging ranges and strategies of lung penguins at the Crozet Islands for 19 mo using satellite traclung for the first time, suggesting that the foraging ecology of the king penguin is closely related to oceanographic features and the biology of its main prey.

The impact of great skua predation on seabird populations at St Kilda: a bioenergetics model

TLDR
Estimation of the total mass of different prey consumed at St Kilda and the potential impact of this predation on other seabird populations suggests that great skuas may have a considerable impact on the internationally important populations of some seabirds at StKilda.