Food of emperor penguins (Aptenodytes forsteri) in the western Ross Sea, Antarctica

被引:68
作者
Cherel, Y [1 ]
Kooyman, GL
机构
[1] Ctr Etud Biol Chize, UPR 4701 CNRS, F-79360 Villiers En Bois, France
[2] Univ Calif San Diego, Scripps Inst Oceanog, Ctr Marine Biotechnol & Biomed, San Diego, CA 92093 USA
关键词
D O I
10.1007/s002270050253
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The diet of the emperor penguin Aptenodytes forsteri in the western Ross Sea during spring was investigated by analysis of stomach contents sampled at three different localities. At Cape Washington, emperor penguins feeding chicks consistently preyed on fishes (89 to 95% by mass) and crustaceans (5 to 11%) over the four spring seasons examined. By far the commonest prey was the Antarctic silverfish Pleuragramma antarcticum (89% of the fish prey); the remainder of fish prey were mainly unidentified juveniles of different species of channichthyid fishes. Three species dominated the crustacean part of the diet, i.e. the gammarid amphipods Abyssorchomene rossi/plebs (30% of the crustacean prey) and Eusirus microps (22%), together with the euphausiid Euphausia crystallorophias (24%). At Coulman Island and Cape Roget, fishes, mainly P. antarcticum, formed the bulk of the food (88 and 93% by mass, respectively), crustaceans were minor prey (2.5 and 0.4%), and the squid Psychroteuthis glacialis accounted for a small but significant part of the food (3.5 and 0.8%). This study emphasizes the importance of the small, shoaling pelagic fish Pleuragramma antarcticum as a key link between zooplankton and top predators, including seabirds, in the food web and marine ecosystem of the Ross Sea.
引用
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页码:335 / 344
页数:10
相关论文
共 55 条
  • [1] Ainley D.G., 1990, P599
  • [2] Ainley D.G., 1991, Journal of Marine Systems, V2, P111, DOI 10.1016/0924-7963(91)90017-O
  • [3] FORAGING BEHAVIOR OF EMPEROR PENGUINS AS A RESOURCE DETECTOR IN WINTER AND SUMMER
    ANCEL, A
    KOOYMAN, GL
    PONGANIS, PJ
    GENDNER, JP
    LIGNON, J
    MESTRE, X
    HUIN, N
    THORSON, PH
    ROBISSON, P
    LEMAHO, Y
    [J]. NATURE, 1992, 360 (6402) : 336 - 339
  • [4] ANDRES HG, 1979, MEERESFORSCHUNG, V27, P88
  • [5] [Anonymous], ORNITHOL MONO
  • [6] [Anonymous], 1992, B SCRIPPS I OCEANOGR
  • [7] Baker AdC, 1990, PRACTICAL GUIDE EUPH
  • [8] Bowman T.E., 1973, Smithsonian Contributions to Zoology, VNo. 136, P1
  • [9] DIVING BEHAVIOR DURING FORAGING IN BREEDING ADELIE PENGUINS
    CHAPPELL, MA
    SHOEMAKER, VH
    JANES, DN
    BUCHER, TL
    MALONEY, SK
    [J]. ECOLOGY, 1993, 74 (04) : 1204 - 1215
  • [10] PREY SPECIES AND NUTRITIVE-VALUE OF FOOD FED DURING SUMMER TO KING PENGUIN APTENODYTES-PATAGONICA CHICKS AT POSSESSION ISLAND, CROZET ARCHIPELAGO
    CHEREL, Y
    RIDOUX, V
    [J]. IBIS, 1992, 134 (02) : 118 - 127