Cephalopods in the diets of Emperor and Adelie penguins in Adelie Land, Antarctica | Zendy

Christophe Offredo | Zendy; Vincent Ridoux | Zendy; M. R. Clarke | Zendy

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Cephalopods in the diets of Emperor and Adelie penguins in Adelie Land, Antarctica

Author(s) -

Christophe Offredo,

Vincent Ridoux,

M. R. Clarke

Publication year - 1985

Publication title -

marine biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.93

H-Index - 119

eISSN - 1432-1793

pISSN - 0025-3162

DOI - 10.1007/bf00399027

Subject(s) - pygoscelis , emperor , biology , spawn (biology) , zoology , ecology , foraging

Cephalopod remains were collected from all of 12 dead Emperor penguin chicks [Aptenodytes forsteri (Gray)], from 76% of 29 living adult Emperor penguins, and from 18% of 105 living adult Adelie penguins [Pygoscelis adeliae\ud(Hombron & Jacquinot)] from Adelie Land, Antarctica, in 1982. Of the seven species of squids represented by lower beaks, Psychroteuthis glacialis comprised 88% of the number in both Emperor chicks and Emperor adults and 100% in Adelie adults. From estimates of the weight of squids represented by lower beaks, Gonatus antarcticus and Kondakovia longimana contributed 18 and 14%, respectively, of the weight of squids in the diet of Emperor chicks and 27 and 21%, respectively, in the diet of Emperor adults. The data suggest that Psychroteuthis glacialis probably hatch in July-September and grow steadily for one year, and then spawn and die

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