Surviving on cached foods — the energetics of egg-caching by arctic foxes

@article{Careau2008SurvivingOC,
  title={Surviving on cached foods — the energetics of egg-caching by arctic foxes},
  author={Vincent Careau and Jean‐François Giroux and Gilles Gauthier and Dominique Berteaux},
  journal={Canadian Journal of Zoology},
  year={2008},
  volume={86},
  pages={1217-1223}
}
Food-caching by arctic foxes (Vulpes lagopus (L., 1758)) is a behavioural adaptation thought to increase winter survival, especially in bird colonies where a large number of eggs can be cached during a short nesting season. In this pa- per, we measured the energy content of greater snow goose (Chen caerulescens atlantica Kennard, 1927) eggs and eval- uated their perishability when cached in tundra soil for a whole summer. We estimated that eggs lost only ~8% of their dry mass over 60 days of… 

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References

SHOWING 1-10 OF 47 REFERENCES
Prolonging the arctic pulse: long-term exploitation of cached eggs by arctic foxes when lemmings are scarce.
TLDR
It is shown that long-term use of eggs that were cached when geese were superabundant at the colony in summer varied with fluctuations in collared lemming abundance (a key component in arctic fox diets throughout most of their range) and suggests that cached eggs functioned as a buffer when collaring lemmings were scarce.
Hoarding of pulsed resources: Temporal variations in egg-caching by arctic fox
TLDR
The hoarding behaviour of the main predator enhances the allochthonous nutrients input brought by migrating birds from the south into the arctic terrestrial ecosystem, which could increase average predator density and promote indirect interactions among prey.
Cache and carry: hoarding behavior of arctic fox
TLDR
According to this hypothesis, arctic foxes may adopt a two-stage strategy allowing both to maximize egg acquisition rate in an undefended nest and subsequently secure eggs in potentially safer sites, and results supporting the rapid-sequestering hypothesis were given.
Foraging Patterns of Arctic Foxes at a Large Arctic Goose Colony
TLDR
The impact of fox predation was low in all years, and foxes took only about 4-8% of all eggs available at the colony during incubation each year, however, caching and use of cached eggs may influence the survival of arctic foxes by forming significant parts of their winter diet or by supplementing the diets of growing young.
Energetics of reproduction in female and male greater snow geese
TLDR
It is concluded that, in female greater snow geese, little fat reserves were used for egg formation though some protein reserves were use, whereas males relied heavily on their fat reserves during the same period, probably a consequence of the long and costly migration between the last staging area and the breeding grounds.
Common ravens raid arctic fox food caches
TLDR
It is provided the first report that ravens can successfully raid food cached by foxes, and that foxes may defend their caches from ravens.
Seasonal patterns of prey availability and the foraging behavior of arctic foxes (Alopex lagopus) in a waterfowl nesting area
TLDR
The foraging behavior of arctic foxes was observed in a waterfowl nesting area on the Yukon–Kuskokwim Delta of Alaska in 1985–1986 and over 80% of the eggs taken by foxes were cached rather than eaten immediately, which extended the availability of this tem...
Comparative nutrient digestibility of arctic foxes (Alopex lagopus) on Svalbard and farm-raised blue foxes (Alopex lagopus).
Spatial and Temporal Patterns in Arctic Fox Diets at a Large Goose Colony
TLDR
It is suggested that large increases in nesting populations of lesser snow and Ross's geese may have beneficial implications for arctic fox populations over a large area.
Adaptation by the Arctic Fox ( Alopex lagopus ) to the Polar Winter
In this article physiological, behavioural and morphological adaptations by the arctic fox to low temperatures and food scarcity in winter are discussed. The arctic fox ( Alopex lagopus ) adapts to
...
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